Specific gravity screening device of grain cleaner

Abstract

The utility model discloses a grain cleaner specific gravity screening device, which belongs to the technical field of grains and comprises a fixing plate, vertical plates are fixedly connected to the front end and the rear end of two sides of the top of the fixing plate, a bearing plate is fixedly connected to the tops of the vertical plates, and a protective box is fixedly connected to one side of the top of the bearing plate. A fan is fixedly mounted on the left side of an inner cavity of the protection box, the input end of the fan communicates with a filter box through a connecting pipe, and a sliding way is fixedly connected to the bottom of an inner cavity of the filter box. Dust generated during screening is sucked in through the fan under the cooperation of the connecting pipe, gas containing the dust is conveyed to the inner cavity of the filter box through the dust suction pipe and the dust suction cover, the dust is filtered through the fine filter screen plate, the filtered gas is conveyed to the air outlet pipe through the connecting pipe, gas without the dust is output through the air outlet pipe, and the dust is filtered through the fine filter screen plate. Therefore, the purpose of automatic dust removal is achieved, and the situation that dust escapes into the air, and consequently the quality of the air is reduced is prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of grains, and particularly relates to a specific gravity screening device for a grain cleaning machine. Background Art

[0002] With the increasing development of China's agriculture and grain industry, especially the continuous development and progress of grain harvesting machinery and methods, the content and types of light impurities in grains have increased, which correspondingly puts forward higher technical requirements for grain cleaning and processing machinery. Cleaning is an indispensable link after grain harvesting. The harvested grains not only include plump and mature seeds, but also mechanically damaged, broken and immature grains. In addition, they also contain many impurities, such as sediment, broken ears and husks. In order to improve the quality of grains, a screening device is needed.

[0003] During the working process of the existing screening device, a driving structure drives a screening mechanism to perform a horizontal reciprocating motion under the cooperation of various components to achieve the screening purpose. However, since the device is used exposed to the air, a large amount of dust is easily generated during the screening process. The dust drifts into the air, which is extremely likely to reduce the air quality of the working environment. When inhaled by the staff, it is easy to cause damage to the respiratory tract. Therefore, we provide a specific gravity screening device for a grain cleaning machine. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a specific gravity screening device for a grain cleaning machine to solve the problems put forward in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A specific gravity screening device for a grain cleaning machine, including a fixing plate. The front and rear ends on both sides of the top of the fixing plate are fixedly connected with vertical plates. The top of the vertical plates is fixedly connected with a bearing plate. One side of the top of the bearing plate is fixedly connected with a protection box. A blower is fixedly installed on the left side of the inner cavity of the protection box. The input end of the blower is communicated with a filtering box through a connecting pipe. The bottom of the inner cavity of the filtering box is fixedly connected with a slideway. A fine filter screen plate is slidably connected to the slideway. The right side of the bottom of the filtering box is communicated with a dust suction pipe. One end of the dust suction pipe is communicated with a dust suction hood. The output end of the blower is communicated with an air outlet pipe.

[0006] By adopting the above scheme, the blower inhales the dust generated during screening in cooperation with the connecting pipe. The gas containing dust is transported to the inner cavity of the filtering box through the dust suction pipe and the dust suction hood, and the dust is filtered by the fine filter screen plate. The filtered gas is transported to the air outlet pipe through the connecting pipe, and the gas without dust is output through the air outlet pipe. Repeating this process achieves the purpose of automatic dust removal, preventing the dust from escaping into the air and thus reducing the air quality.

[0007] As a preferred embodiment of the specific gravity screening device of a grain cleaning machine, the front end and the rear end of the bottom of the bearing plate are fixedly connected with a first movable shaft. A first articulated rod is articulated on the first movable shaft. One end of the first articulated rod is articulated with a second movable shaft. The back surface of the second movable shaft is fixedly connected with a screening structure. The left side of the screening structure is fixedly connected with a third movable shaft. The rear end of the left side of the fixed plate is fixedly connected with a connecting plate. A motor is fixedly installed on the front surface of the connecting plate. The output end of the motor is fixedly connected with a turntable. A connecting column is fixedly connected to the front surface of the turntable. A second articulated rod is fixedly connected to the connecting column. One end of the second articulated rod is articulated with the third movable shaft.

[0008] With the above scheme, the motor drives the turntable to rotate. The turntable drives the connecting column to rotate. The connecting column drives the second articulated rod to rotate. During the rotation of the second articulated rod, a thrust will be generated. At the same time, with the cooperation of the third movable shaft, the screening structure can be driven to perform a horizontal reciprocating motion. Repeating this way, the screening efficiency is greatly improved.

[0009] As a preferred embodiment of the specific gravity screening device of a grain cleaning machine, shock absorbers are fixedly connected to the four surrounding sides of the bottom of the fixed plate. The bottom of the shock absorber is fixedly connected with a bottom plate.

[0010] With the above scheme, through the setting of the shock absorbers, the vibration amplitude of the device during operation is reduced, achieving the purpose of shock absorption and noise reduction.

[0011] As a preferred embodiment of the specific gravity screening device of a grain cleaning machine, a door is movably connected to the surface of the protection box through a hinge, and a handle is fixedly connected to one side of the surface of the door.

[0012] With the above scheme, by opening the door through the handle, the devices inside the protection box can be maintained regularly, greatly improving the service life of the devices inside the protection box.

[0013] As a preferred embodiment of the specific gravity screening device of a grain cleaning machine, anti-slip pads are bonded to the four surrounding sides of the bottom of the bottom plate, and the number of the anti-slip pads is four.

[0014] With the above scheme, through the setting of the anti-slip pads, the device has the function of anti-slip, greatly improving the stability of the device during operation.

[0015] As a preferred embodiment of the specific gravity screening device of a grain cleaning machine, limit frames are fixedly connected to both sides of the bottom of the fan, and the bottom of the limit frame is fixedly connected to the bottom of the inner cavity of the protection box.

[0016] With the above scheme, through the setting of the limit frames, the fan is supported, thereby reducing the vibration amplitude of the fan during operation and improving the stability of the fan during operation.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] 1. The utility model sucks the dust generated during screening through a fan in cooperation with a connecting pipe. The gas containing dust is transported to the inner cavity of a filter box through a dust suction pipe and a dust suction hood, and the dust is filtered by a fine filter screen plate. The filtered gas is transported to an air outlet pipe through a connecting pipe, and the gas without dust is output through the air outlet pipe. Repeating this process can achieve the purpose of automatic dust removal, prevent dust from escaping into the air, and thus reduce the air quality.

[0019] 2. The utility model drives a turntable to rotate through a motor, drives a connecting column to rotate through the turntable, and drives a second hinge rod to rotate through the connecting column. During the rotation of the second hinge rod, a thrust will be generated, and at the same time, with the cooperation of a third movable shaft, the screening structure can be driven to perform a horizontal reciprocating motion. Repeating this process greatly improves the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural view of the utility model;

[0021] Figure 2 is a partial schematic view of the second perspective of the utility model;

[0022] Figure 3 is a sectional view of the protective box of the utility model.

[0023] In the figure: 1, fixed plate; 2, vertical plate; 3, bearing plate; 4, first movable shaft; 5, first hinge rod; 6, second movable shaft; 7, screening structure; 8, connecting plate; 9, motor; 10, turntable; 11, connecting column; 12, second hinge rod; 13, third movable shaft; 14, protective box; 15, fan; 16, filter box; 17, slideway; 18, fine filter screen plate; 19, dust suction pipe; 20, dust suction hood; 21, shock absorber; 22, bottom plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Please refer to Figures 1-3 , a specific gravity screening device for a grain cleaner, including a fixed plate 1. The front and rear ends of both sides of the top of the fixed plate 1 are fixedly connected with vertical plates 2, and the top of the vertical plates 2 is fixedly connected with a bearing plate 3, as shown in Figure 2As shown in the figure, the front end and the rear end of the bottom of the bearing plate 3 are fixedly connected with a first movable shaft 4. A first hinged rod 5 is hinged on the first movable shaft 4. One end of the first hinged rod 5 is hinged with a second movable shaft 6. The back surface of the second movable shaft 6 is fixedly connected with a screening structure 7. The left side of the screening structure 7 is fixedly connected with a third movable shaft 13. The rear end of the left side of the fixing plate 1 is fixedly connected with a connecting plate 8. A motor 9 is fixedly installed on the front surface of the connecting plate 8. The output end of the motor 9 is fixedly connected with a turntable 10. A connecting column 11 is fixedly connected to the front surface of the turntable 10. A second hinged rod 12 is fixedly connected to the connecting column 11. One end of the second hinged rod 12 is hinged with the third movable shaft 13. By driving the turntable 10 to rotate through the motor 9, driving the connecting column 11 to rotate through the turntable 10, and driving the second hinged rod 12 to rotate through the connecting column 11. During the rotation of the second hinged rod 12, a thrust will be generated. At the same time, with the cooperation of the third movable shaft 13, the screening structure 7 can be driven to perform a horizontal reciprocating motion. Repeating this way greatly improves the screening efficiency. One side of the top of the bearing plate 3 is fixedly connected with a protective box 14. A blower 15 is fixedly installed on the left side of the inner cavity of the protective box 14. See Figure 3 As shown in the figure, both sides of the bottom of the blower 15 are fixedly connected with limiting frames, and the bottom of the limiting frames is fixedly connected to the bottom of the inner cavity of the protective box 14. Through the setting of the limiting frames, the blower 15 is supported, thereby reducing the vibration amplitude when the blower 15 works and improving the stability when the blower 15 works. The input end of the blower 15 is communicated with a filter box 16 through a connecting pipe. A slideway 17 is fixedly connected to the bottom of the inner cavity of the filter box 16. A fine filter screen plate 18 is slidably connected to the slideway 17. The right side of the bottom of the filter box 16 is communicated with a dust suction pipe 19. One end of the dust suction pipe 19 is communicated with a dust suction hood 20. The output end of the blower 15 is communicated with an air outlet pipe. By the blower 15 inhaling the dust generated during screening in cooperation with the connecting pipe, the gas containing dust is transported to the inner cavity of the filter box 16 through the dust suction pipe 19 and the dust suction hood 20, and the dust is filtered by the fine filter screen plate 18. The filtered gas is transported to the air outlet pipe through the connecting pipe, and the gas without dust is output through the air outlet pipe. Repeating this way achieves the purpose of automatic dust removal, preventing the dust from escaping into the air and thus reducing the air quality.

[0025] See Figure 1 As shown in the figure, shock absorbers 21 are fixedly connected to the four corners of the bottom of the fixing plate 1. The bottom of the shock absorbers 21 is fixedly connected with a bottom plate 22. Through the setting of the shock absorbers 21, the vibration amplitude of the device during operation is reduced, achieving the purpose of shock absorption and noise reduction. See Figure 2 As shown in the figure, the surface of the protective box 14 is movably connected with a box door through a hinge, and a handle is fixedly connected to one side of the surface of the box door. By opening the box door through the handle, the devices in the inner cavity of the protective box 14 can be regularly maintained, greatly improving the service life of the devices in the inner cavity of the protective box 14. See Figure 1As shown in the figure, anti-slip pads are adhesively bonded to the four sides of the bottom of the bottom plate 22, and the number of anti-slip pads is four. Through the setting of the anti-slip pads, the device has the function of anti-slip, which greatly improves the stability of the device during operation.

[0026] During use, first pour the grains onto the screening structure 7. After pouring is completed, drive the turntable 10 to rotate through the motor 9. Drive the connecting column 11 to rotate through the turntable 10. Drive the second hinge rod 12 to rotate through the connecting column 11. During the rotation of the second hinge rod 12, a thrust will be generated. At the same time, with the cooperation of the third movable shaft 13, the screening structure 7 can be driven to perform horizontal reciprocating motion. Repeating this process, the grains are screened through the sieve holes on the screening structure 7, which greatly improves the screening efficiency. At the same time, the dust generated during screening is sucked in through the cooperation of the blower 15 and the connecting pipe. The gas containing dust is transported to the inner cavity of the filter box 16 through the dust suction pipe 19 and the dust suction hood 20, and the dust is filtered through the fine filter plate 18. The filtered gas is transported to the air outlet pipe through the connecting pipe, and the gas without dust is output through the air outlet pipe. Repeating this process achieves the purpose of automatic dust removal, preventing dust from escaping into the air and thus reducing the air quality.

Claims

1. A specific gravity screening device for a grain cleaning machine, characterized in that: The invention comprises a fixed plate (1), wherein the front end and the rear end of both sides of the top of the fixed plate (1) are fixedly connected to vertical plates (2), the top of the vertical plate (2) is fixedly connected to a bearing plate (3), one side of the top of the bearing plate (3) is fixedly connected to a protection box (14), a fan (15) is fixedly installed on the left side of the inner cavity of the protection box (14), the input end of the fan (15) is connected to a filter box (16) through a connecting pipe, the bottom of the inner cavity of the filter box (16) is fixedly connected to a slideway (17), a fine filter screen (18) is slidably connected to the slideway (17), the right side of the bottom of the filter box (16) is connected to a dust suction pipe (19), one end of the dust suction pipe (19) is connected to a dust suction hood (20), and the output end of the fan (15) is connected to an air outlet pipe.

2. A grain cleaning machine specific gravity screening device according to claim 1, characterized in that: The front and rear ends of the bottom of the carrying plate (3) are fixedly connected to a first movable shaft (4), a first hinged rod (5) is hingedly connected to the first movable shaft (4), one end of the first hinged rod (5) is hingedly connected to a second movable shaft (6), the back of the second movable shaft (6) is fixedly connected to a screening structure (7), the left side of the screening structure (7) is fixedly connected to a third movable shaft (13), the rear end of the left side of the fixed plate (1) is fixedly connected to a connecting plate (8), a motor (9) is fixedly installed on the front surface of the connecting plate (8), the output end of the motor (9) is fixedly connected to a turntable (10), the front surface of the turntable (10) is fixedly connected to a connecting column (11), the connecting column (11) is fixedly connected to a second hinged rod (12), and one end of the second hinged rod (12) is hinged to the third movable shaft (13).

3. A grain cleaning machine specific gravity screening device according to claim 1, characterized in that: Shock absorbers (21) are fixedly connected to the four sides of the bottom of the fixed plate (1), and a bottom plate (22) is fixedly connected to the bottom of the shock absorber (21).

4. A grain cleaning machine specific gravity screening device according to claim 1, characterized in that: The surface of the protection box (14) is movably connected to a box door via a hinge, and a handle is fixedly connected to one side of the surface of the box door.

5. The specific gravity screening device for a grain cleaning machine according to claim 3, characterized in that: Anti-skid pads are bonded to four sides of the bottom of the base plate (22).

6. A grain cleaning machine specific gravity screening device according to claim 1, characterized in that: Both sides of the bottom of the fan (15) are fixedly connected to limit frames, and the bottom of the limit frames is fixedly connected to the bottom of the inner cavity of the protection box (14).

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