Coarse cereal powder particle size sorting device

Abstract

The invention discloses a coarse cereal powder particle size sorting device, and relates to the technical field of coarse cereal powder sorting devices, the coarse cereal powder particle size sorting device comprises a base and a material distribution box, and a first rack, a second rack and a third rack are fixedly mounted above the base. According to the coarse cereal powder particle size sorting device, coarse cereal particles are received and conveyed through the arranged conveying mechanism and the arranged receiving hopper, the conveying mechanism can drive the receiving hopper to do V-shaped track movement above the crushing box, the coarse cereal particles can be conveniently dispersed and conveyed, the coarse cereal particles can be evenly distributed on the crushing roller assembly, and the crushing efficiency is improved. According to the coarse cereal sorting machine, the phenomenon of local concentration is reduced, the crushing efficiency, the crushing uniformity and the coarse cereal sorting quality are improved, the scraping rod can rotationally scrape the inner wall of the receiving hopper while the conveying mechanism drives the receiving hopper to move, adhesion and stagnation of coarse cereals can be prevented, the mobility of the coarse cereals is improved, and energy consumption is reduced while the conveying efficiency and quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of miscellaneous grain powder sorting devices, and particularly to a miscellaneous grain powder particle size sorting device. Background Art

[0002] Miscellaneous grains refer to the general term for various crops such as grains, beans, and tubers other than the main food crops. They usually include sorghum, millet, oats, buckwheat, red beans, mung beans, black beans, soybeans, etc. In the process of miscellaneous grain processing, a miscellaneous grain powder particle size sorting device will be used. The miscellaneous grain powder particle size sorting device is an efficient processing equipment, mainly used to sort miscellaneous grain powders with different particle sizes to meet different production requirements. This device usually includes multiple functional modules such as crushing, grading, and collection. First of all, the crushing module is responsible for initially crushing large-particle miscellaneous grain powders, reducing their particle size to make them suitable for subsequent grading processing.

[0003] However, in the processing of the existing miscellaneous grain powder particle size sorting device, the position of its feeding hopper is basically fixedly distributed on both sides of the top of the crushing box or in the middle position of the crushing box, or a diversion plate is set at the feeding port of the crushing box. However, when feeding, the material can only fall along the same path. This single feeding method is likely to cause the accumulation of materials inside the crushing box, resulting in the concentrated accumulation of materials in a local area, which may in turn affect the crushing effect and easily lead to uneven crushing. This not only affects the processing efficiency of the material, but also may cause uneven particle size distribution of the finished powder. For this reason, we have proposed a miscellaneous grain powder particle size sorting device. Summary of the Invention

[0004] The purpose of the present invention is to provide a miscellaneous grain powder particle size sorting device to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: A device for sorting the particle size of miscellaneous grain powder, comprising a base and a material distribution box. Above the base, a first rack, a second rack, and a third rack are fixedly installed, and the second rack is located between the first rack and the second rack. Above the first rack, a storage bin is installed. In the middle of the second rack, a crushing box is installed by bolts. The material distribution box is connected below the crushing box. Above the crushing box, a feeding mechanism is provided, and both the first rack and the third rack are connected to the feeding mechanism. The feeding mechanism includes a cover plate installed above the crushing box by bolts. Inside the cover plate, a through V-shaped chute is provided. On the adjacent sides of the first rack and the third rack, a guide rod and an electric guide rail are fixedly connected. Inside the electric guide rail, an electric slider is electrically connected. On the electric slider, a sliding frame is fixedly connected. At both ends of the sliding frame, support plates are fixedly connected. On one side of the support plate, a receiving hopper is provided. On both sides of the receiving hopper, sliding rods are fixedly connected. Inside the support plate, a strip-shaped chute for the sliding rods to slide is provided. Inside the receiving hopper, a scraping rod is provided. Outside the receiving hopper, a toothed ring is slidably sleeved.

[0006] Preferably, a ball is movably sleeved on the inner wall of the receiving hopper close to the toothed ring, and a material scattering block is fixedly connected to the bottom end of the scraping rod.

[0007] Preferably, an L-shaped plate is fixed above the support plate. On one side of the L-shaped plate, cylindrical blocks are fixed at equal intervals, and the cylindrical blocks are meshed with the toothed ring.

[0008] Preferably, a crushing roller assembly is installed in the inner cavity of the crushing box. On the inner walls of the corners of the crushing box, baffles are fixed, and the baffles are located at the bottom opening of the receiving hopper. At the bottom of the storage bin, above the receiving hopper, a discharging assembly is installed.

[0009] Preferably, a sieve mesh is provided inside the material distribution box. Feeding grooves are provided in the middle of both the crushing box and the material distribution box. On one side inner wall of the material distribution box, a discharge port is provided. On one side of the material distribution box close to the discharge port, a discharge plate is installed.

[0010] Preferably, one side of the sieve mesh is connected to a sieving mechanism, and the sieving mechanism is located outside the material distribution box. The sieving mechanism includes a transmission shaft connected to one side of the sieve mesh. The transmission shaft is connected to the inner wall of the material distribution box through a bearing.

[0011] Preferably, one end of the transmission shaft is fixedly connected to a second swing rod. Above the sieve mesh, a guide plate is provided. Both ends of the guide plate are connected to a rotating shaft, and the rotating shaft is connected to the material distribution box through a bearing.

[0012] Preferably, one end of the rotating shaft is fixedly connected to a first swing rod, and a motor is fixedly installed on the outer wall of the material distribution box close to the first swing rod. One end of the motor is connected to a turntable through a coupling.

[0013] Preferably, a round rod is fixed on the surface of the turntable, and traction grooves for the round rod to slide are formed on the inner sides of the first swing rod and the second swing rod.

[0014] Preferably, a support block is fixed on one side of the sieve mesh close to the transmission shaft, and an arc-shaped groove for the support block to slide is formed on the inner wall of the material distribution box.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. For this miscellaneous grain powder particle size sorting device, through the arranged feeding mechanism and the receiving hopper, the miscellaneous grain particles are received and fed. The feeding mechanism can drive the receiving hopper to move in a V-shaped trajectory above the crushing box, which is convenient for dispersing the feeding of miscellaneous grain particles, enabling the miscellaneous grain particles to be evenly distributed on the crushing roller assembly, reducing the phenomenon of local concentration, and improving the crushing efficiency, crushing uniformity, and sorting quality of the miscellaneous grains. 2. For this miscellaneous grain powder particle size sorting device, while the feeding mechanism drives the receiving hopper to move, the scraping rod can rotate and scrape the inner wall of the receiving hopper, which can prevent the adhesion and stagnation of miscellaneous grains, improve the fluidity of miscellaneous grains. At the same time, the material scattering block can shunt the miscellaneous grains falling from the receiving hopper, ensuring the smooth flow of materials, reducing the possibility of blockage, and without the need to additionally set up a power drive structure. The scraping rod can be combined with the V-shaped trajectory movement process of the receiving hopper, reducing energy consumption while improving the feeding efficiency and quality. 3. For this miscellaneous grain powder particle size sorting device, the screening mechanism drives the sieve mesh and the guide plate to rotate and swing simultaneously. The movement of the sieve mesh can increase the chance of contact between the miscellaneous grain distribution and the surface of the sieve mesh, prompting the small-particle-size powder to quickly pass through the sieve holes of the sieve mesh. And the guide plate can conduct left-right guiding and shunting of the miscellaneous grain powder, avoiding the situation of too fast feeding speed and a large amount of miscellaneous grain powder piling up on the surface of the sieve mesh, and improving the stability and efficiency of screening. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the first frame of the present invention; Figure 2 It is a three-dimensional structural schematic diagram of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the storage bin of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the feeding mechanism of the present invention; Figure 5 It is a three-dimensional structural schematic diagram of the L-shaped plate of the present invention; Figure 6 It is a three-dimensional sectional structural schematic diagram of the receiving hopper of the present invention; Figure 7 Schematic diagram of the three-dimensional structure of the gear ring of the present invention; Figure 8 Schematic diagram of the three-dimensional structure of the crushing box of the present invention; Figure 9 Schematic diagram of the three-dimensional structure of the blanking chute of the present invention; Figure 10 Schematic diagram of the three-dimensional sectional structure of the material distribution box of the present invention; Figure 11 Schematic diagram of the three-dimensional structure of the arc-shaped groove of the present invention; Figure 12 Schematic diagram of the three-dimensional structure of the material screening mechanism of the present invention; Figure 13 Schematic diagram of the three-dimensional structure of the second swing rod of the present invention; Figure 14 Schematic diagram of the three-dimensional structure of the material scattering block of the present invention.

[0017] In the figure: 1, base; 2, first frame; 3, storage bin; 4, second frame; 5, crushing box; 6, feeding mechanism; 601, guide rod; 602, support plate; 603, sliding rod; 604, strip-shaped chute; 605, V-shaped chute; 606, cover plate; 607, electric guide rail; 608, electric slider; 609, sliding frame; 7, material distribution box; 8, material screening mechanism; 801, first swing rod; 802, turntable; 803, round rod; 804, traction groove; 805, second swing rod; 806, transmission shaft; 9, third frame; 10, motor; 11, support block; 12, guide plate; 13, rotating shaft; 14, screen; 15, L-shaped plate; 16, cylindrical block; 17, gear ring; 18, receiving hopper; 19, scraping rod; 20, material scattering block; 21, ball; 22, baffle; 23, crushing roller assembly; 24, blanking chute; 25, discharge port; 26, discharge plate; 27, arc-shaped groove; 28, discharging assembly. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1-4 and Figure 8, the present invention provides a technical solution: a device for sorting the particle size of miscellaneous grain powder, including a base 1 and a material distribution box 7. Above the base 1, a first frame 2, a second frame 4, and a third frame 9 are fixedly installed, and the second frame 4 is located between the first frame 2 and the second frame 4. Above the first frame 2, a storage bin 3 is installed. In the middle of the second frame 4, a crushing box 5 is installed through bolts. The material distribution box 7 is connected below the crushing box 5. In the inner cavity of the crushing box 5, a crushing roller assembly 23 is installed. At the bottom of the storage bin 3, above the receiving hopper 18, a discharging assembly 28 is installed.

[0020] For this device for sorting the particle size of miscellaneous grain powder, according to Figures 1-3 what is known, the first frame 2 stably supports the storage bin 3, and the second frame 4 supports the crushing box 5. By separating the storage bin 3 and the crushing box 5, it is possible to avoid a large pressure on the top of the crushing box 5. The storage bin 3 is used to store a large amount of miscellaneous grain particles. Through the opening and closing of the discharging assembly 28, the miscellaneous grains enter the receiving hopper 18, and then drive the miscellaneous grain particles to enter the inside of the crushing box 5, so that the crushing roller assembly 23 quickly crushes the miscellaneous grain particles into miscellaneous grain powder.

[0021] Please refer to Figures 1-4 , above the crushing box 5, a feeding mechanism 6 is provided, and both the first frame 2 and the third frame 9 are connected to the feeding mechanism 6. The feeding mechanism 6 includes a cover plate 606 installed above the crushing box 5 through bolts.

[0022] For this device for sorting the particle size of miscellaneous grain powder, according to Figures 1-4 it can be known that the feeding mechanism 6 provided on the crushing box 5 dispersedly conveys the miscellaneous grain particles. The cover plate 606 is installed above the crushing box 5, which can block a large amount of miscellaneous grain particles from splashing out and also guide the movement of the receiving hopper 18.

[0023] Please refer to Figures 2-4 , on the adjacent sides of the first frame 2 and the third frame 9, a guide rod 601 and an electric guide rail 607 are fixedly connected. Inside the electric guide rail 607, an electric slider 608 is electrically connected. On the electric slider 608, a sliding frame 609 is fixedly connected. At both ends of the sliding frame 609, support plates 602 are fixedly connected.

[0024] For this device for sorting the particle size of miscellaneous grain powder, according to Figures 2-4 what is known, the electric guide rail 607 drives the electric slider 608 to slide, and the slider 608 then drives the sliding frame 609 to move. The sliding frame 609 slides outside the guide rod 601. At the same time, the sliding frame 609 drives the support plate 602 to move, and then the support plate 602 drives the receiving hopper 18 to move, which can facilitate the dispersed feeding of the receiving hopper 18.

[0025] Please refer toFigures 2-4 , a through V-shaped chute 605 is provided inside the cover plate 606. A material receiving hopper 18 is provided on one side of the support plate 602. Slide rods 603 are fixedly connected to both sides of the material receiving hopper 18. A strip-shaped chute 604 for the slide rods 603 to slide is provided inside the support plate 602. A baffle 22 is fixed on the inner wall of the corner of the crushing box 5, and the baffle 22 is located at the bottom opening of the material receiving hopper 18.

[0026] This kind of miscellaneous grain powder particle size sorting device, according to Figures 2-4 what is known, when the support plate 602 drives the material receiving hopper 18 to move, the bottom end of the material receiving hopper 18 is separated from the baffle 22. The baffle 22 is used to block the bottom end of the material receiving hopper 18 when the material receiving hopper 18 is receiving materials, so as to prevent miscellaneous grains from leaking out from the bottom end of the material receiving hopper 18 when the material receiving hopper 18 is still in the process of receiving materials; The material receiving hopper 18 is squeezed by the inclined surface of the V-shaped chute 605, so that the bottom end of the material receiving hopper 18 slides along the V-shaped chute 605. Since the lateral movement of the material receiving hopper 18 is restricted by the support plate 602, the material receiving hopper 18 can only drive the slide rod 603 to move horizontally along the strip-shaped chute 604 while sliding along the V-shaped chute 605. Also due to the longitudinal sliding of the electric slider, the material receiving hopper 18 can scatter materials along the V-shaped chute 605. By moving in a V-shaped trajectory, the miscellaneous grain particles can be evenly distributed on the crushing roller assembly 23, reducing the phenomenon of local concentration, improving the crushing efficiency and crushing uniformity, and the sorting quality of the miscellaneous grains.

[0027] Please refer to Figures 4-7 and Figure 14 , a scraping rod 19 is provided inside the material receiving hopper 18. A toothed ring 17 is slidably sleeved outside the material receiving hopper 18. A ball 21 is movably sleeved on the inner wall of the material receiving hopper 18 close to the toothed ring 17. A material scattering block 20 is fixedly connected to the bottom end of the scraping rod 19. An L-shaped plate 15 is fixed above the support plate 602. Cylindrical blocks 16 are fixed on one side of the L-shaped plate 15 at equal intervals, and the cylindrical blocks 16 are meshed with the toothed ring 17.

[0028] This kind of miscellaneous grain powder particle size sorting device, according to Figures 4-7 what is known, when the material receiving hopper 18 moves horizontally on the support plate 602, the material receiving hopper 18 will drive the toothed ring 17 to move. Since the toothed ring 17 is meshed with the cylindrical block 16, the toothed ring 17 will rotate along the cylindrical block 16. At the same time, the toothed ring 17 drives the scraping rod 19 to rotate. The setting of the ball 21 can reduce the friction between the toothed ring 17 and the material receiving hopper 18, facilitating the rotation of the toothed ring 17. And the cylindrical block 16 is relatively smooth, which can reduce friction loss and facilitate the toothed ring 17 to move and rotate along with the material receiving hopper 18; The rotation of the scraping rod 19 can scrape the inner wall of the receiving hopper 18, preventing miscellaneous grains from adhering and stagnating, improving the fluidity of miscellaneous grains. At the same time, the material scattering block 20 can divert the miscellaneous grains falling from the receiving hopper 18, ensuring the smooth flow of materials, reducing the possibility of blockage, and without the need to additionally set up an electric drive structure. The scraping rod 19 can be combined with the movement process of the V-shaped track of the receiving hopper 18, reducing energy consumption while improving the conveying efficiency and quality.

[0029] Please refer to Figure 1 、 Figure 2 、 Figure 9 、 Figure 10 and Figure 12 As shown in, a screen 14 is provided inside the material distribution box 7. Feeding slots 24 are provided in the middle of both the crushing box 5 and the material distribution box 7. An outlet 25 is provided on one inner wall of the material distribution box 7. A discharge plate 26 is installed on one side of the material distribution box 7 close to the outlet 25. A door panel is installed outside the material distribution box 7.

[0030] For this miscellaneous grain powder particle size sorting device, according to Figure 9 、 Figure 10 and Figure 12 After the miscellaneous grains are crushed into powder in the crushing box 5, the miscellaneous grain powder falls into the material distribution box 7 from the feeding slot 24, and the miscellaneous grain powder is screened into two particle size powders by the screen 14. The screened powder slides from the outlet 25 to the discharge plate 26 and is finally discharged through the discharge plate 26. The miscellaneous grain powder blocked above the screen 14 can be taken out later by opening the door panel outside the material distribution box 7, which is convenient and fast.

[0031] Please refer to Figure 9 、 Figure 10 and Figures 11-13 As shown in, a screening mechanism 8 is connected to one side of the screen 14, and the screening mechanism 8 is located outside the material distribution box 7. The screening mechanism 8 includes a transmission shaft 806 connected to one side of the screen 14. The transmission shaft 806 is connected to the inner wall of the material distribution box 7 through a bearing. One end of the transmission shaft 806 is fixedly connected to a second swing rod 805. The two sides of the screen 14 in contact with the inner wall of the material distribution box 7 are arc-shaped structures.

[0032] For this miscellaneous grain powder particle size sorting device, according to Figure 9 、 Figure 10 and Figures 11-13 As is known, when the second swing rod 805 rotates and swings, it can drive the transmission shaft 806 to rotate, and then the transmission shaft 806 drives the screen 14 to rotate. Since the two sides of the screen 14 in contact with the inner wall of the material distribution box 7 are arc-shaped structures, it can avoid the influence of the inner wall of the material distribution box 7 on the rotation and swing of the screen 14. The movement of the screen 14 can increase the chance of contact between the miscellaneous grain distribution and the surface of the screen 14, prompting the small particle size powder to quickly pass through the screen holes of the screen 14 and improving the screening efficiency.

[0033] Please refer to Figure 9 、 Figure 10 、 Figure 12 and Figure 13 As shown in, above the screen 14, there is a guide plate 12. Both ends of the guide plate 12 are connected with a rotating shaft 13. The rotating shaft 13 is connected to the material distribution box 7 through bearings. One end of the rotating shaft 13 is fixedly connected with a first swing rod 801.

[0034] For this kind of miscellaneous grain powder particle size sorting device, according to Figure 9 、 Figure 10 、 Figure 12 and Figure 13 it can be known that the first swing rod 801 drives the rotating shaft 13 to rotate, and the rotating shaft 13 then drives the guide plate 12 to rotate and swing. The miscellaneous grain powder falling from the feeding chute 24 first contacts the surface of the guide plate 12, and then the guide plate 12 conducts left - right guiding and shunting on the miscellaneous grain powder, which can avoid the situation that the feeding speed is too fast and a large amount of miscellaneous grain powder accumulates on the surface of the screen 14, improving the stability of screening. The rotation and swing of the guide plate 12 and the screen 14 are carried out simultaneously, and the swinging directions of the guide plate 12 and the screen 14 are opposite, increasing the effective screening area of the screen 14 and enhancing the separation effect of the material.

[0035] Please refer to Figures 9-13 As shown in, on the outer wall of the material distribution box 7 close to the first swing rod 801, a motor 10 is fixedly installed. One end of the motor 10 is connected with a turntable 802 through a coupling. A round rod 803 is fixed on the surface of the turntable 802. Traction grooves 804 for the round rod 803 to slide are opened on the inner sides of the first swing rod 801 and the second swing rod 805. The first swing rod 801 is located on one side of the second swing rod 805.

[0036] For this kind of miscellaneous grain powder particle size sorting device, according to Figures 9-13 it is known that when the motor 10 is started, the motor 10 drives the turntable 802 to rotate, the turntable 802 then drives the round rod 803 to rotate, and the round rod 803 slides in the traction groove 804, so that the round rod 803 pushes and pulls the first swing rod 801 and the second swing rod 805 to rotate. Since the first swing rod 801 is located on one side of the second swing rod 805, only one round rod 803 can be used to drive the first swing rod 801 and the second swing rod 805 to rotate simultaneously.

[0037] Please refer to Figure 11 and Figure 12 As shown in and, on the side of the screen 14 close to the transmission shaft 806, a support block 11 is fixed. An arc - shaped groove 27 for the support block 11 to slide is opened on the inner wall of the material distribution box 7. The support blocks 11 are symmetrically arranged on the surface of the screen 14.

[0038] For this kind of miscellaneous grain powder particle size sorting device, according to Figure 11and Figure 12 As is known, while the screen 14 rotates and swings, it can drive the support block 11 to slide in the arc-shaped groove 27. The arc-shaped groove 27 guides the sliding of the support block 11, which can improve the stability of the screen 14.

[0039] In summary, when using this miscellaneous grain powder particle size sorting device, by opening the unloading component 28, miscellaneous grain particles fall into the receiving hopper 18. Then, the feeding mechanism 6 drives the receiving hopper 18 to move above the crushing box 5. At the same time, the receiving hopper 18 slides along a V-shaped track to convey and disperse the miscellaneous grain particles. And the scraping rod 19 is driven to rotate by the toothed ring 17 and the cylindrical block 16. While scattering the materials, the inner wall of the receiving hopper 18 is scraped to prevent miscellaneous grain particles from adhering and stagnating. Then, the miscellaneous grain particles are crushed into powder by the crushing roller assembly 23, and then enter the material distribution box 7 through the feeding chute 24. Then, the miscellaneous grain powder is screened by the screening mechanism 8 and the screen 14, and the miscellaneous grain powder is screened into powders of two particle sizes. Finally, it is discharged through the discharge port 25 and the door panel of the material distribution box 7. The feeding mechanism 6 and the screening mechanism 8 improve the crushing efficiency and sorting efficiency of the miscellaneous grain powder particle size sorting device. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A device for sorting the particle size of miscellaneous grain powder, comprising a base (1) and a material distribution box (7). Above the base (1), a first frame (2), a second frame (4) and a third frame (9) are fixedly installed, and the second frame (4) is located between the first frame (2) and the second frame (4). Above the first frame (2), a storage bin (3) is installed. It is characterized in that: The middle part of the second frame (4) is installed with a crushing box (5) through bolts. The feeding box (7) is connected below the crushing box (5). Above the crushing box (5), there is a feeding mechanism (6), and both the first frame (2) and the third frame (9) are connected to the feeding mechanism (6). The feeding mechanism (6) includes a cover plate (606) installed above the crushing box (5) through bolts. Inside the cover plate (606), there is a through V-shaped sliding groove (605). On the adjacent sides of the first frame (2) and the third frame (9), there are fixed a guide rod (601) and an electric guide rail (607). Inside the electric guide rail (607), there is an electrically connected electric slider (608). On the electric slider (608), there is fixed a sliding frame (609). At both ends of the sliding frame (609), there are fixed support plates (602). On one side of the support plate (602), there is a receiving hopper (18). On both sides of the receiving hopper (18), there are fixed sliding rods (603). Inside the support plate (602), there is a strip-shaped sliding groove (604) for the sliding rod (603) to slide. Inside the receiving hopper (18), there is a scraping rod (19). Outside the receiving hopper (18), there is a sliding sleeve of a toothed ring (17).

2. The granularity sorting device for miscellaneous grain powder according to claim 1, wherein: On the inner wall of the receiving hopper (18) close to the toothed ring (17), there is a movable sleeve of a ball (21). At the bottom end of the scraping rod (19), there is fixed a material scattering block (20).

3. The granularity sorting device for miscellaneous grain powder according to claim 2, characterized in that: Above the support plate (602), there is fixed an L-shaped plate (15). On one side of the L-shaped plate (15), there are fixed equally spaced cylindrical blocks (16), and the cylindrical blocks (16) are meshed with the toothed ring (17).

4. A miscellaneous grain powder particle size sorting device according to claim 3, characterized in that: Inside the crushing box (5), there is installed a crushing roller assembly (23). On the inner walls of the corners of the crushing box (5), there are fixed baffles (22), and the baffles (22) are located at the bottom opening of the receiving hopper (18). At the bottom of the storage bin (3) above the receiving hopper (18), there is installed a discharging assembly (28).

5. A miscellaneous grain powder particle size sorting device according to claim 1, characterized in that: Inside the feeding box (7), there is a sieve mesh (14). In the middle parts of both the crushing box (5) and the feeding box (7), there are opened feeding slots (24). On one inner wall of the feeding box (7), there is opened a discharging port (25). On one side of the feeding box (7) close to the discharging port (25), there is installed a discharging plate (26).

6. The granularity sorting device for miscellaneous grain powder according to claim 5, wherein: On one side of the sieve mesh (14), there is connected a sieving mechanism (8), and the sieving mechanism (8) is located outside the feeding box (7). The sieving mechanism (8) includes a transmission shaft (806) connected to one side of the sieve mesh (14). The transmission shaft (806) is connected to the inner wall of the feeding box (7) through a bearing.

7. A granularity sorting device for miscellaneous grain powder according to claim 6, characterized in that: At one end of the transmission shaft (806), there is fixed a second swing rod (805). Above the sieve mesh (14), there is a guide plate (12). At both ends of the guide plate (12), there are connected rotating shafts (13). The rotating shafts (13) are connected to the feeding box (7) through bearings.

8. A miscellaneous grain powder particle size sorting device according to claim 7, characterized in that: One end of the rotating shaft (13) is fixedly connected to a first swing rod (801). A motor (10) is fixedly installed on the outer wall of the material distribution box (7) close to the first swing rod (801). One end of the motor (10) is connected to a turntable (802) through a coupling.

9. A miscellaneous grain powder particle size sorting device according to claim 8, characterized in that: A round rod (803) is fixed on the surface of the turntable (802). Traction grooves (804) for the round rod (803) to slide are formed on the inner sides of the first swing rod (801) and the second swing rod (805).

10. A miscellaneous grain powder particle size sorting device according to claim 9, characterized in that: A support block (11) is fixed on one side of the sieve mesh (14) close to the transmission shaft (806). An arc-shaped groove (27) for the support block (11) to slide is formed on the inner wall of the material distribution box (7).

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