A grain quality screening device

Abstract

The application provides a grain quality screening device, relates to the technical field of grain screening, and comprises a screening box. An inner cavity upper side of the screening box is provided with a conveying belt. A left side of an upper end of the conveying belt is provided with a lower hopper. A bottom of a right end of the conveying belt is provided with an air outlet groove. A middle part of the upper end of the conveying belt is provided with a flattening assembly. The flattening assembly comprises a mounting plate. A left side of a bottom end of the mounting plate is provided with multiple groups of partition columns. A middle part of the bottom end of the mounting plate is provided with multiple groups of a flattening plate. The multiple groups of the flattening plate are installed in a descending trend from left to right. The utility model drives the discharging plate to rotate uniformly by the discharging roller, thereby realizing uniform discharging of the rice. Then, the thickness of the rice accumulation is flattened and thinned again by the flattening assembly, the thickness of the rice accumulation is reduced, the uniformity of the rice distribution on the conveying belt is improved, the air blown at the air outlet groove can act on each rice, and the quality of the rice screening is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of grain screening technology, specifically a grain quality screening device. Background Technology

[0002] Grain quality screening is a crucial step in ensuring the quality of grain storage, processing, and food safety. The core of this process involves using physical, chemical, or biological methods to remove impurities, defective grains, and harmful components, selecting high-quality grains that meet the required standards. The process must be carried out step-by-step, taking into account the characteristics and intended use (food, feed, industrial processing) of the grain type (e.g., wheat, rice, corn, oats).

[0003] Among them, the air separation method is often used when screening rice. It mainly utilizes the density difference between rice and impurities. Light impurities (such as weed seeds, broken leaves, and empty grains) are separated by airflow generated by a fan. The screening principle is that plump rice has a high density and is less affected by airflow, falling vertically to the collection area; shriveled rice, hay, and other light impurities are blown to the waste area by the airflow.

[0004] When using air separation to screen rice, it is necessary to control the flow rate of the rice to avoid excessive flow, which would cause the rice to pile up too thickly. When falling, the rice grains would easily block each other, making it difficult for the blown air to reach each grain. As a result, the shriveled rice grains, blocked by the plump rice grains, would receive less wind force and would not be able to drift to the waste area, thus affecting the screening quality.

[0005] To address the aforementioned problems, we propose a grain quality screening device. Utility Model Content

[0006] To address the problems in the background art, this utility model provides a grain quality screening device.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A grain quality screening device includes a screening box. A conveyor belt is arranged on the upper side of the inner cavity of the screening box. A hopper is arranged on the upper left side of the conveyor belt, and an air outlet is arranged at the bottom right end of the conveyor belt. A leveling component is arranged in the middle of the upper end of the conveyor belt. The leveling component includes a mounting plate. Multiple sets of partition columns are arranged on the lower left side of the mounting plate. Multiple sets of primary leveling plates are arranged in the middle of the bottom end of the mounting plate. The multiple sets of primary leveling plates are installed in a descending trend from left to right. Multiple sets of secondary leveling plates are arranged on the right end of the primary leveling plates. The secondary leveling plates are fixedly installed at the bottom right end of the mounting plate.

[0008] Preferably, the feeding hopper is fixedly installed on the upper left side of the screening box, the bottom of the feeding hopper is provided with a discharge pipe, the inner cavity of the discharge pipe is provided with a discharge roller, and the outer surface of the discharge roller is distributed with multiple sets of feeding plates in a ring array.

[0009] Preferably, the air outlet slot is fixedly installed on the right side of the inner cavity of the screening box, and a fan is connected to the back of the air outlet slot through a pipe. The fan is fixedly installed at the bottom of the inner cavity of the screening box.

[0010] Preferably, a material distribution plate is provided at the right end of the inner cavity of the screening box, and the material distribution plate is located at the bottom right end of the conveyor belt.

[0011] Preferably, the left end of the material distribution plate is provided with a first discharge port, and the right end of the material distribution plate is provided with a second discharge port.

[0012] Preferably, the first discharge port is located on the lower right side of the conveyor belt.

[0013] Compared with the prior art, the beneficial effects of this utility model are: In this solution, a discharge roller is installed in the discharge pipe. During feeding, the discharge roller drives the discharge plate to rotate evenly, thereby achieving uniform feeding of rice and effectively controlling the flow rate of rice. The setting of the discharge hopper ensures that the rice falls evenly onto the conveyor belt. Then, the thickness of the rice pile is further flattened and thinned by the leveling component, reducing the thickness of the rice pile and improving the uniformity of the rice distribution on the conveyor belt. This allows the air blown out of the air outlet to act on each grain of rice, thereby effectively improving the quality of rice screening. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a side sectional view of the flattening component in this utility model; Figure 4 This is a schematic diagram of the flattening component in this utility model; Figure 5 This is a cross-sectional structural diagram of the air outlet duct in this utility model.

[0015] In the diagram: 1. Screening box; 2. Feed hopper; 3. Discharge pipe; 4. Discharge roller; 5. Feed plate; 6. Conveyor belt; 7. Mounting plate; 8. Divider column; 9. First paving plate; 10. Second paving plate; 11. Air outlet duct; 12. Fan; 13. Dividing plate; 14. First discharge port; 15. Second discharge port. Detailed Implementation

[0016] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows: Example: Refer to Figure 1 - Figure 5 As shown, a grain quality screening device in this embodiment includes a screening box 1. A conveyor belt 6 is arranged on the upper side of the inner cavity of the screening box 1. A hopper 2 is arranged on the upper left side of the conveyor belt 6, and an air outlet duct 11 is arranged at the bottom right end of the conveyor belt 6. A leveling component is arranged in the middle of the upper end of the conveyor belt 6. The leveling component includes a mounting plate 7. Multiple sets of dividing columns 8 are arranged on the lower left side of the mounting plate 7. Multiple sets of primary leveling plates 9 are arranged in the middle of the bottom end of the mounting plate 7. The multiple sets of primary leveling plates 9 are installed in a descending trend from left to right. Multiple sets of secondary leveling plates 10 are arranged at the right end of the primary leveling plates 9. The secondary leveling plates 10 are fixedly installed at the bottom right end of the mounting plate 7.

[0017] The system uses multiple sets of separating columns 8 to separate and disperse the piled rice grains. Then, multiple sets of first-stage spreading plates 9 are used to spread the rice grains and gradually thin them out. Finally, multiple sets of second-stage spreading plates 10 are used to spread the rice grains out a second time, so that the rice grains can be spread evenly and thinly on the conveyor belt 6. This allows the air blown out of the air outlet 11 to maximize its effect on each grain of rice during the falling process, thereby effectively improving the air separation effect of the rice grains.

[0018] In some examples, the feeding hopper 2 is fixedly installed on the upper left side of the screening box 1. The bottom of the feeding hopper 2 is provided with a discharge pipe 3. The discharge pipe 3 has a discharge roller 4 in the middle of its inner cavity. The outer surface of the discharge roller 4 has multiple sets of discharge plates 5 arranged in a ring array. The discharge roller 4 is driven by a motor. The motor drives the discharge roller 4 to rotate, thereby causing the discharge plates 5 to rotate at a constant speed in the discharge pipe 3. This achieves control over the discharge flow of rice, so that the rice can be evenly fed onto the conveyor belt 6 for conveying and discharge.

[0019] In some examples, the air outlet 11 is fixedly installed on the right side of the inner cavity of the screening box 1. The back of the air outlet 11 is connected to the fan 12 through a pipe. The fan 12 is fixedly installed at the bottom of the inner cavity of the screening box 1. When the fan 12 is started, air force is generated and then transported through the pipe to the air outlet 11 for blowing out, thereby realizing the air blowing screening of the falling rice.

[0020] In some examples, a material distribution plate 13 is provided at the right end of the inner cavity of the screening box 1. The material distribution plate 13 is located at the bottom right end of the conveyor belt 6 and serves as a separator.

[0021] In some examples, the left end of the dividing plate 13 is provided with a first discharge port 14, and the right end of the dividing plate 13 is provided with a second discharge port 15. The second discharge port 15 is used to discharge shriveled rice grains or rice husks and other lighter debris.

[0022] In some examples, the first discharge port 14 is located on the lower right side of the conveyor belt 6, and the first discharge port 14 is used to discharge high-quality, plump rice.

[0023] The working principle of this utility model is as follows: When it is necessary to screen the rice, the rice is first put into the feeding hopper 2, and then the motor is started to drive the discharge roller 4 to rotate, thereby driving the feeding plate 5 to rotate evenly in the discharge pipe 3, so as to achieve uniform feeding of the rice, so that the rice can fall evenly onto the conveyor belt 6 below, and the rice is transported by the conveyor belt 6 to the right outlet direction.

[0024] During the conveying process, when the rice moves to the leveling component, it can be further spread evenly. The main leveling steps are as follows: first, multiple sets of separating columns 8 separate the rice that are piled together. Then, when the rice moves to the first leveling plate 9, multiple sets of first leveling plates 9 will scrape the rice flat in turn and thin the thickness of the rice pile. The second leveling plate 10 will then thin the flattened rice a second time, thereby effectively preventing the rice from piling up too thickly.

[0025] After being flattened and thinned, the rice grains continue to move to the right under the conveyor belt 6 until they fall from the corner of the conveyor belt 6. At this time, the air blown by the blower 12 acts on the falling rice grains through the air outlet 11. During the blowing process, the plump rice grains, due to their high density and weight, are less affected by the wind and fall into the first discharge port 14 for discharge. The shriveled rice grains, empty rice husks, dry grass, and other debris, due to their light weight, are blown by the wind to the second discharge port 15 for discharge. This achieves the screening of the rice grains and plays a screening role.

[0026] In the process of using this utility model, the rice is first fed evenly through the feeding hopper 2, and then the thickness of the rice pile is flattened and thinned by the flattening component, so that the air blown out from the air duct 11 can act on each grain of rice, thereby effectively improving the quality of rice screening.

[0027] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A grain quality screening device, characterized in that, Includes a screening box (1), a conveyor belt (6) is provided on the upper side of the inner cavity of the screening box (1), a hopper (2) is provided on the upper left side of the conveyor belt (6), and an air outlet trough (11) is provided at the bottom right end of the conveyor belt (6). A leveling component is provided at the upper middle part of the conveyor belt (6). The leveling component includes a mounting plate (7). Multiple sets of partition columns (8) are provided on the left side of the bottom end of the mounting plate (7). Multiple sets of first-stage leveling plates (9) are provided at the middle of the bottom end of the mounting plate (7). The multiple sets of first-stage leveling plates (9) are installed in a descending trend from left to right. Multiple sets of second-stage leveling plates (10) are provided at the right end of the first-stage leveling plate (9). The second-stage leveling plates (10) are fixedly installed at the bottom right end of the mounting plate (7).

2. The grain quality screening device according to claim 1, characterized in that, The feeding hopper (2) is fixedly installed on the upper left side of the screening box (1). The bottom of the feeding hopper (2) is provided with a discharge pipe (3). The middle of the inner cavity of the discharge pipe (3) is provided with a discharge roller (4). The outer surface of the discharge roller (4) is arranged in a ring array with multiple sets of feeding plates (5). The discharge roller (4) is driven by a motor.

3. The grain quality screening device according to claim 2, characterized in that, The air outlet slot (11) is fixedly installed on the right side of the inner cavity of the screening box (1). The back of the air outlet slot (11) is connected to a fan (12) through a pipe. The fan (12) is fixedly installed at the bottom of the inner cavity of the screening box (1).

4. A grain quality screening device according to claim 3, characterized in that, The screening box (1) has a material distribution plate (13) at the right end of its inner cavity, and the material distribution plate (13) is located at the bottom right end of the conveyor belt (6).

5. A grain quality screening device according to claim 4, characterized in that, The left end of the material distribution plate (13) is provided with a first discharge port (14), and the right end of the material distribution plate (13) is provided with a second discharge port (15).

6. A grain quality screening device according to claim 5, characterized in that, The first discharge port (14) is located on the lower right side of the conveyor belt (6).

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