A grain sorting machine

Abstract

The present application relates to the technical field of grain sorting equipment, and provides a grain sorting machine, which comprises a rack, a vibrating sieve device and a winnowing dust removal device, the vibrating sieve device is arranged on one side of the rack, and the winnowing dust removal device is arranged above the rack; the winnowing dust removal device comprises a winnowing box, a feeding port and a fan, the feeding port is arranged on the winnowing box, the fan is connected with an air pipe, and the air outlet of the air pipe extends into the winnowing box and is located below the feeding port. The present application overcomes the shortcomings of the prior art, has reasonable design and compact structure, integrates the winnowing dust removal device and the vibrating sieve device on the same rack, removes light impurities in the grain through winnowing first, and then removes large-particle impurities and small-particle impurities through double-layer screen grading, realizes the continuity and integration of grain cleaning, has compact structure, smooth process flow and more thorough cleaning effect.

Description

Technical Field

[0001] This invention relates to the field of grain sorting equipment technology, specifically to a grain sorting machine. Background Technology

[0002] During harvesting, drying, storage, and transportation, grains are often mixed with light impurities such as dust, chaff, and straw, as well as particulate impurities with diameters larger or smaller than the grain, such as sand, straw, and broken grains. To improve the cleanliness and quality of grains, cleaning treatment is necessary.

[0003] Currently, most grain cleaning equipment uses either air separation or screening as a single method. However, in single air separation, grain typically falls directly from the inlet, resulting in a concentrated material flow that fails to form a uniform and dispersed material curtain. This means the airflow generated by the blower cannot fully act on the grain surface, leading to incomplete separation of light impurities and low air separation efficiency. In single screening devices, the discharge arrangement is often unreasonable. During multi-stage screening, the discharge positions of clean grain and various impurities can easily interfere with each other, making separate collection difficult and affecting the ease of operation. Therefore, we propose a grain separator. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a grain sorting machine that overcomes the deficiencies of the prior art, has a reasonable design and compact structure, and solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a grain cleaning machine, comprising a frame, a vibrating screening device, and an air separation and dust removal device, wherein the vibrating screening device is disposed on one side of the frame, and the air separation and dust removal device is disposed above the frame;

[0006] The air separation dust removal device includes an air separation box, a feed inlet and a fan. The feed inlet is located on the air separation box, and the fan is connected to an air duct. The air outlet of the air duct extends into the air separation box and is located below the feed inlet.

[0007] The vibrating screening device includes a main box, the top of which has an opening, and a first screen frame and a second screen frame are provided inside the main box. The first screen frame and the second screen frame are stacked on top of each other and can be detachably installed in the opening of the main box.

[0008] A first screen is installed inside the first screen frame, and a second screen is installed inside the second screen frame. The mesh size of the first screen is smaller than that of the second screen.

[0009] Preferably, the air separator is provided with a buffer baffle, and multiple guide plates are inclinedly arranged on the buffer baffle. The multiple guide plates are arranged in a fan-shaped pattern. The buffer baffle and the guide plates work together to buffer, guide and disperse the falling grain.

[0010] Preferably, the air classifier box is further provided with a first baffle and a second baffle. A material discharge gap is left between the first baffle and the buffer baffle. A material discharge pipe is provided at the bottom of the air classifier box below the material discharge gap. A dust removal gap is left between the second baffle and the first baffle. The second baffle and the first baffle divide the inner cavity of the air classifier box into an air classifier chamber and a settling chamber. A dust collector is provided on the settling chamber. The air outlet of the air duct corresponds to the dust removal gap so as to blow light impurities toward the dust collector.

[0011] Preferably, the bottom of the settling chamber is provided with an impurity cleaning port.

[0012] Preferably, the air separator is further provided with a third baffle inside, the third baffle is located below the feed inlet, and a material drop gap is formed between the third baffle and the buffer baffle to prevent dust from overflowing through the feed inlet.

[0013] Preferably, the first screen frame is provided with a first guide plate at the lower end of the first screen mesh, the first guide plate is inclined, and a first discharge pipe is provided at its lower end.

[0014] Preferably, the second screen frame is provided with a second guide plate at the lower end of the second screen mesh, the second guide plate is inclined, and a second discharge pipe is provided at its lower end.

[0015] Preferably, the first guide plate and the second guide plate are inclined in opposite directions, so that the first discharge pipe and the second discharge pipe are located on opposite sides of the main box body.

[0016] Preferably, a pair of third guide plates are provided in the lower part of the main box body. The two third guide plates are inclined downward toward the middle, and a third discharge port is formed between their lower ends. A third discharge pipe is provided at the third discharge port, and the third discharge pipe is located in the middle of the main box body.

[0017] Preferably, a material distribution box is installed on the frame, the top of the material distribution box is provided with a discharge port connected to the discharge pipe, a rotating shaft is provided inside the material distribution box, and several mounting plates are provided on both sides of the outer wall of the rotating shaft along the circumference. Material distribution inclined plates are connected between the mounting plates on both sides, and a discharge gap is left between adjacent material distribution inclined plates. The bottom of the material distribution box is open, and the opening is located above the higher end of the second screen.

[0018] This invention provides a grain sorting machine. It has the following beneficial effects:

[0019] 1. This invention integrates the air separation dust removal device and the vibrating screening device on the same frame. First, light impurities in the grain are removed by air separation, and then large and small particles are removed by double-layer screen grading. This realizes the continuous and integrated grain cleaning process, with a compact structure, smooth process flow, and more thorough cleaning effect.

[0020] 2. The air separation dust removal device is equipped with buffer baffles and multiple guide inclined plates arranged in a fan shape, which can buffer, guide and disperse the grain falling from the feed inlet, so that the grain forms a uniform and dispersed material curtain during the falling process, increasing the contact area between the airflow and the grain, and allowing the airflow of the fan to fully act on the surface of the grain, effectively removing light impurities such as dust, chaff, and straw, significantly improving the efficiency and quality of air separation.

[0021] 3. The air separator's internal cavity is divided into an air separation chamber and a settling chamber by the first and second baffles, with the air duct outlet corresponding to the dust removal gap. Light impurities enter the settling chamber through the dust removal gap under the action of airflow and are collected and processed by the dust collector, while heavier grains enter the feed pipe through the feed gap. The air separation effect is good. An impurity cleaning port is set at the bottom of the settling chamber for convenient periodic cleaning of deposited impurities, making maintenance convenient. A third baffle is set inside the air separator near the feed inlet below, which can effectively prevent dust-laden airflow from overflowing from the feed inlet, reducing dust diffusion and improving the working environment.

[0022] 4. The vibrating screening device adopts a stacked and detachable first and second screen frame. The mesh size of the first screen is smaller than that of the second screen, which can first remove large particles of impurities and then small particles of impurities, thus obtaining clean grain. It also facilitates the cleaning and maintenance of the screen frame. The first and second guide plates are inclined in opposite directions, so that the clean grain discharge pipe and the large particle impurity discharge pipe are located on opposite sides of the main box, avoiding mutual interference between the discharge positions and facilitating separate collection. The two third guide plates collect the small particles of impurities that have passed through the first screen and discharge them through the third discharge pipe in the middle. The discharge layout is reasonable and the operation is more convenient.

[0023] 5. The material distribution box drives the mounting plate and the material distribution inclined plate to rotate through the rotating shaft, which can evenly disperse the air-separated grain and drop it to the higher end of the second screen, avoiding local accumulation of grain on the screen and improving the utilization rate of the effective screening area of ​​the screen, thereby significantly improving screening efficiency and screening quality. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention.

[0025] Figure 2 For the present invention Figure 1Structural front view schematic diagram.

[0026] Figure 3 For the present invention Figure 1 Top view of the structure.

[0027] Figure 4 This is a three-dimensional schematic diagram of the structure of the air separation dust removal device of the present invention.

[0028] Figure 5 For the present invention Figure 4 Top view of the structure.

[0029] Figure 6 For the present invention Figure 4 Left view of the structure.

[0030] Figure 7 For the present invention Figure 4 Structural cross-sectional view.

[0031] Figure 8 This is a three-dimensional schematic diagram of the frame structure of the present invention.

[0032] Figure 9 This is an exploded view of the structure of the vibrating screening device of the present invention.

[0033] Figure 10 This is a three-dimensional schematic diagram of the uniform material inclined plate structure of the present invention.

[0034] In the diagram: 1. Air separation dust removal device; 11. Feed inlet; 12. Buffer baffle; 121. Guide inclined plate; 13. Fan; 131. Air duct; 14. First baffle; 15. Second baffle; 16. Discharge pipe; 17. Dust collector; 18. Impurity cleaning port; 19. Third baffle; 2. Vibrating screening device; 21. Main box; 211. Third guide plate; 212. Third discharge pipe; 22. First screen frame; 221. First screen mesh; 222. First guide plate; 223. First discharge pipe; 23. Second screen frame; 231. Second screen mesh; 232. Second guide plate; 233. Second discharge pipe; 3. Frame; 31. Material distribution box; 32. Discharge port; 33. Rotating shaft; 34. Mounting plate; 35. Material distribution inclined plate. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figures 1 to 10As shown, the present invention provides a grain cleaning machine, comprising a frame 3, a vibrating screening device 2, and an air-separation dust removal device 1. The vibrating screening device 2 is disposed on one side of the frame 3, and the air-separation dust removal device 1 is disposed above the frame 3. The air-separation dust removal device 1 is used to remove light impurities from the grain, such as dust, chaff, and straw; the vibrating screening device 2 is used to grade and screen the grain, removing large and small particles of impurities, thereby achieving grain cleaning.

[0037] The air separation dust removal device 1 includes an air separation box, a feed inlet 11, and a blower 13. The feed inlet 11 is located at the top of the air separation box and is used to receive the grain to be separated. The blower 13 is connected to an air duct 131, the outlet of which extends into the air separation box and is located below the feed inlet 11. During operation, the blower 13 is started, and the airflow is sent into the air separation box through the air duct 131. As the grain falls, it is separated from the grain by blowing and separating light impurities.

[0038] Furthermore, the air separator is equipped with a buffer baffle 12, on which multiple guide plates 121 are inclined and arranged in a fan-shaped pattern. The buffer baffle 12 and the guide plates 121 work together to buffer, guide, and disperse the grain falling from the feed inlet 11, so that the grain forms a uniform and dispersed material curtain during the falling process, which facilitates the airflow to fully act on the grain surface and improves the air separation effect.

[0039] The air separator's interior is also equipped with a first baffle 14 and a second baffle 15. A material discharge gap is left between the first baffle 14 and the buffer baffle 12, and a discharge pipe 16 is located at the bottom of the air separator below this gap. A dust removal gap is left between the second baffle 15 and the first baffle 14, dividing the air separator's interior into an air separation chamber and a settling chamber. A dust collector 17 is installed in the settling chamber, and the outlet of the air duct 131 corresponds to the dust removal gap. After being dispersed by the buffer baffle 12 and the guide inclined plate 121, the grain falls. When passing through the area where the air outlet of the air duct 131 is located, under the action of airflow, light impurities are blown towards the dust removal gap and then enter the settling chamber, where they are collected and processed by the dust collector 17, preferably a bag filter. Heavier grains continue to fall, passing through the material discharge gap and entering the discharge pipe 16, completing the air separation process.

[0040] To facilitate the cleaning of impurities in the settling chamber, an impurity cleaning port 18 is provided at the bottom of the settling chamber. Operators can periodically open the impurity cleaning port 18 to clean the impurities deposited in the settling chamber.

[0041] As a further improvement, a third baffle 19 is provided inside the air separator. The third baffle 19 is located below the feed inlet 11 and can prevent the airflow carrying dust from overflowing out of the feed inlet 11, thus improving the working environment.

[0042] The vibrating screening device 2 includes a main housing 21 with an opening at the top. Inside the main housing 21 are a first screen frame 22 and a second screen frame 23, which are stacked one on top of the other and can be detachably installed in the opening of the main housing 21 for easy cleaning and maintenance of the screen frames.

[0043] A first screen 221 is installed inside the first screen frame 22, and a second screen 231 is installed inside the second screen frame 23. The mesh size of the first screen 221 is smaller than that of the second screen 231. Thus, the second screen 231 is used to remove impurities larger than the grain, while the first screen 221 is used to remove impurities smaller than the grain, achieving the grading and cleaning of the grain.

[0044] The first screen frame 22 is provided with a first guide plate 222 at the lower end of the first screen 221. The first guide plate 222 is inclined and has a first discharge pipe 223 at its lower end. The clean grain remaining on the first screen 221 after being screened by the first screen 221 moves downward along the first screen 221 to the first guide plate 222 and is discharged through the first discharge pipe 223.

[0045] The second screen frame 23 is provided with a second guide plate 232 at the lower end of the second screen 231. The second guide plate 232 is inclined and has a second discharge pipe 233 at its lower end. Large particles of impurities remaining on the second screen 231 after being screened by the second screen 231 move downward along the second screen 231 to the second guide plate 232 and are discharged through the second discharge pipe 233.

[0046] Preferably, the first guide plate 222 and the second guide plate 232 are inclined in opposite directions, so that the first discharge pipe 223 and the second discharge pipe 233 are located on opposite sides of the main body 21. This avoids interference between the discharge positions of clean grain and large particle impurities, and facilitates their separate collection.

[0047] The lower part of the main housing 21 is provided with a pair of third guide plates 211. The two third guide plates 211 are inclined downward towards the middle, and a third discharge port is formed between their lower ends. A third discharge pipe 212 is provided at the third discharge port, and the third discharge pipe 212 is located in the middle of the main housing 21. Small particles of impurities and dust that pass through the first screen 221 fall into the bottom of the main housing 21, are collected by the two third guide plates 211 to the third discharge port in the middle, and are discharged by the third discharge pipe 212.

[0048] Furthermore, a material distribution box 31 is installed on the frame 3, and the top of the material distribution box 31 is provided with a discharge port 32 connected to the discharge pipe 16. A rotating shaft 33 is installed inside the material distribution box 31, and several mounting plates 34 are provided circumferentially on both sides of the outer wall of the rotating shaft 33. Material distribution inclined plates 35 are connected between the mounting plates 34 on both sides. A discharge gap is left between adjacent material distribution inclined plates 35. The bottom of the material distribution box 31 is open, and this opening is located above the higher end of the second screen 231. The grain after air separation enters the material distribution box 31 through the discharge pipe 16 and the discharge port 32, falling onto the rotating material distribution inclined plates 35. The rotating shaft 33 drives the material distribution inclined plates 35 to rotate, so that the grain is evenly dispersed in the material distribution box 31 and falls evenly from the bottom opening onto the higher end of the second screen 231, preventing the grain from accumulating on the second screen 231 and improving screening efficiency and screening quality.

[0049] In this embodiment, the main housing 21 is connected to a vibration source (not shown in the figure). The vibration source can be a vibration motor or the like, to drive the main housing 21 and the screen frame inside to vibrate, thereby achieving screening.

[0050] During operation, the grain to be separated enters the air-separating chamber through the feed inlet 11, where it is buffered, guided, and dispersed by the buffer baffle 12 and the guide inclined plate 121. The airflow generated by the blower 13 is blown onto the dispersed grain through the air duct 131, blowing light impurities into the settling chamber and collecting them by the dust collector 17. Some heavier impurities can be cleaned out through the impurity cleaning port 18 after settling. The air-separated grain enters the equalization box 31 through the feeding gap and the feeding pipe 16, and is evenly distributed by the equalization inclined plate 35 before falling onto the higher end of the second screen 231. Under vibration, the grain moves downward along the second screen 231. Large particles of impurities are trapped on the second screen 231 and discharged through the second discharge pipe 233. Grain passing through the second screen 231 falls onto the first screen 221, where it is trapped and discharged through the first discharge pipe 223. Small particles of impurities pass through the first screen 221 and fall to the bottom of the main box 21, where they are collected by the third guide plate 211 and discharged through the third discharge pipe 212. This completes the air separation and screening cleaning process of the grain.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A grain sorting machine, characterized in that, It includes a frame (3), a vibrating screening device (2) and an air separation dust removal device (1), wherein the vibrating screening device (2) is located on one side of the frame (3) and the air separation dust removal device (1) is located above the frame (3); The air separation dust removal device (1) includes an air separation box, a feed inlet (11) and a fan (13). The feed inlet (11) is located on the air separation box. The fan (13) is connected to a duct (131). The outlet of the duct (131) extends into the air separation box and is located below the feed inlet (11). The vibrating screening device (2) includes a main box (21), the top of the main box (21) is provided with an opening, and a first screen frame (22) and a second screen frame (23) are provided inside the main box (21). The first screen frame (22) and the second screen frame (23) are stacked on top of each other and can be detachably installed in the opening of the main box (21). The first screen frame (22) is equipped with a first screen (221), and the second screen frame (23) is equipped with a second screen (231). The mesh size of the first screen (221) is smaller than that of the second screen (231).

2. The grain sorting machine according to claim 1, characterized in that, The air separator is equipped with a buffer baffle (12), and multiple guide plates (121) are inclinedly arranged on the buffer baffle (12). The multiple guide plates (121) are arranged in a fan-shaped pattern. The buffer baffle (12) and the guide plates (121) work together to buffer, guide and disperse the falling grain.

3. The grain sorting machine according to claim 2, characterized in that, The air classifier box is also provided with a first baffle (14) and a second baffle (15) inside. A material discharge gap is left between the first baffle (14) and the buffer baffle (12). A material discharge pipe (16) is provided at the bottom of the air classifier box below the material discharge gap. A dust removal gap is left between the second baffle (15) and the first baffle (14). The second baffle (15) and the first baffle (14) divide the inner cavity of the air classifier box into an air classifier chamber and a settling chamber. A dust collector (17) is provided on the settling chamber. The air outlet of the air duct (131) corresponds to the dust removal gap so as to blow light impurities toward the dust collector (17).

4. The grain sorting machine according to claim 3, characterized in that, The bottom of the settling chamber is provided with an impurity cleaning port (18).

5. The grain sorting machine according to claim 3, characterized in that, The air separator is also provided with a third baffle (19) inside. The third baffle (19) is located below the feed inlet (11), and a material drop gap is formed between the third baffle (19) and the buffer baffle (12) to prevent dust from overflowing through the feed inlet (11).

6. The grain sorting machine according to claim 1, characterized in that, The first screen frame (22) has a first guide plate (222) at the lower end of the first screen (221). The first guide plate (222) is inclined and has a first discharge pipe (223) at its lower end.

7. The grain sorting machine according to claim 6, characterized in that, The second screen frame (23) has a second guide plate (232) at the lower end of the second screen (231). The second guide plate (232) is inclined and has a second discharge pipe (233) at its lower end.

8. The grain sorting machine according to claim 7, characterized in that, The first guide plate (222) and the second guide plate (232) are inclined in opposite directions so that the first discharge pipe (223) and the second discharge pipe (233) are located on opposite sides of the main box (21).

9. The grain sorting machine according to claim 8, characterized in that, The lower part of the main box (21) is provided with a pair of third guide plates (211). The two third guide plates (211) are inclined downward towards the middle, and a third discharge port is formed between their lower ends. A third discharge pipe (212) is provided at the third discharge port. The third discharge pipe (212) is located in the middle of the main box (21).

10. The grain sorting machine according to claim 3, characterized in that, A material distribution box (31) is installed on the frame (3). The top of the material distribution box (31) is provided with a discharge port (32) connected to the discharge pipe (16). A rotating shaft (33) is provided inside the material distribution box (31). Several mounting plates (34) are provided on both sides of the outer wall of the rotating shaft (33) along the circumferential direction. Material distribution inclined plates (35) are connected between the mounting plates (34) on both sides. A discharge gap is left between adjacent material distribution inclined plates (35). The bottom of the material distribution box (31) is open, and the opening is located above the higher end of the second screen (231).

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