Multi-stage rice dust removal device
By combining auger conveyor, multiple suction fans, and screening racks in a multi-stage dust removal device, the problems of easy mixing of fine impurities and dust and slow processing speed in existing technologies are solved, achieving efficient dust removal and impurity separation of rice, and improving the purity and processing efficiency of rice.
Patent Information
- Application Number
- CN202423079402.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Existing rice dust removal equipment often results in fine impurities and dust being easily re-mixed into the raw materials, and the processing speed is slow.
A multi-stage dust removal device is adopted, which combines auger conveyor, multiple suction fans and screening frame. The auger keeps the rice in a dynamic flow state, and the multi-stage suction fans and screening frame separate dust and impurities. The screening frame is driven by a drive mechanism to perform reciprocating motion, and the dust discharge plate and filter plate perform multiple separations.
It improves dust removal and impurity separation efficiency, reduces the burden on subsequent processing equipment, enhances the purity and processing efficiency of rice, reduces maintenance difficulty and cost, and ensures the integrity of rice.
Smart Images
Figure CN223819085U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rice production technology, specifically to a multi-stage rice dust removal device. Background Technology
[0002] Rice is mainly composed of two parts: the husk and the brown rice. It refers to the grains without removing the husk. Rice is rich in carbohydrates and is one of the important sources of energy for the human body.
[0003] During the rice production process, rice harvested from the field will contain various impurities, such as dust, soil particles, and straw fragments. If these impurities are not removed, they will affect the appearance and quality of the rice. Therefore, dust removal equipment is usually required for treatment.
[0004] In the process of realizing this utility model, the inventors discovered the following problems with the existing technology: 1. The current dust removal equipment is relatively simple. Common vibrating screen dust removal equipment separates rice from impurities through vibration, but the separated fine impurities and dust are still easily mixed back into the raw materials; 2. At the same time, relying solely on the vibrating screen dust removal method slows down the overall processing speed and prolongs the processing time. Utility Model Content
[0005] The purpose of this utility model is to provide a multi-stage rice dust removal device to solve the problems mentioned in the background art, such as the easy re-mixing of separated fine impurities and dust into the raw materials and the slow speed of single vibration processing. To achieve the above objective, this utility model provides the following technical solution: a multi-stage rice dust removal device, including a processing box, the top of which is bolted to a conveying frame and a first collection box, the two ends of the outer wall of the processing box being bolted to a first suction fan and a second suction fan, the top of which is fixedly connected to a storage bucket, the inside of which is rotatably connected to an auger, the outer wall of which is tightly fitted to a second collection box, and the processing box being movably connected to a screening frame via a drive mechanism rotatably connected inside. A flow inlet is fixedly connected to the material conveying frame. The bottom of one end of the material conveying frame is connected to the top of the flow inlet via a pipe. A diversion channel is slidably connected inside the processing box. The diversion channel is located below the screening frame and is attached to the bottom of the screening frame. A discharge plate is welded to one side of the inner wall of the processing box. The discharge plate is located below one end of the screening frame. A connecting frame is fixedly connected to the outer wall of the processing box at a position corresponding to the second suction fan. The bottom of the storage tank is connected to the top of one end of the material conveying frame via a pipe. A gate is rotatably connected inside the pipe between the storage tank and the material conveying frame.
[0006] The drive mechanism consists of synchronous pulleys and a turntable. The synchronous pulleys are distributed vertically and are externally fitted with belts. The turntable is fixedly connected to one of the synchronous pulleys by a shaft passing through its center. The turntable is rotatably connected to the inner wall of the processing box, and the surface of the turntable is rotatably connected to one end of a rocker arm by a pin. The other end of the rocker arm is rotatably connected to the outer wall of the screening frame.
[0007] More preferably, the top of both the storage bin and the first collection box are rotatably connected to movable door panels, and the outer wall of the storage bin is rotatably connected to a servo motor at the position corresponding to the gate plate. The output end of the servo motor is fixedly connected to the gate plate, and the gate plate forms a flipping structure in the pipe between the storage bin and the conveying frame.
[0008] In a further preferred embodiment, the material conveyor has a slot that communicates with the second collection box at the position of the second collection box, and a metal grid plate is fixedly connected to the position of the slot. The top of the second collection box is arc-shaped and fits into the slot. The interior of the second collection box is a hollow structure. At the same time, the bottom of the second collection box is fixed to the surface of the processing box by bolts. The air inlet of the first suction fan is connected to the second collection box through a pipe, and its air outlet is connected to the first collection box through a pipe.
[0009] More preferably, the connecting frame is composed of two sets of quadrilateral inner and outer metal frames that are interlocked with each other, and the inner frame is welded to the outer wall of the processing box as a whole. The connection points between the inner and outer metal frames are provided with through holes for threaded bolts, and the second suction fan is fixed to the surface of the outer metal frame by bolts. At the same time, an independent cavity is formed between the inner and outer metal frames.
[0010] In a further preferred embodiment, a square slot for inserting and connecting the filter plate is provided through one side of the processing box corresponding to the position of the connecting frame, and the two ends of the filter plate on the outer wall of the processing box are rotatably connected with buckles, and the filter plate is engaged with the inner wall of the square slot of the processing box by the buckles. At the same time, the air inlet and air outlet of the second suction fan are respectively connected to the cavity where the connecting frame is located and the first collection box through pipes.
[0011] More preferably, the screening frame is slidably connected to the corresponding grooves set at both ends of the inner wall of the processing box by sliders fixed at both ends of its outer wall, and one side of the inner wall of the groove is connected to one end of the slider by a spring. The screening frame is U-shaped, with a dust discharge plate opened on the side adjacent to the filter plate, while the other side of the dust discharge plate is a solid plate, and a small circular through hole is opened on the bottom plate surface.
[0012] More preferably, the inlet is funnel-shaped and located directly above the screening frame.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] This invention combines multiple dust removal methods. At the material conveying frame, an auger conveyor works in conjunction with a first suction fan to keep the rice in a dynamic flow state, which facilitates dust separation and collection into the first collection box. This removes a large amount of dust before the material enters the main processing stage. Inside the processing box, the screening frame swings back and forth under the drive mechanism, working with a second suction fan and a dust removal plate to further separate and collect dust and fine impurities. At the same time, it can also discharge broken or small stone particles into the diversion trough to complete the initial sorting, which greatly improves the efficiency of dust removal and impurity separation, reduces the burden on subsequent processing equipment, and improves the purity of the rice.
[0015] In this invention, the connecting frame provides convenient installation and disassembly conditions for the filter plate, and the square slot and buckle on the processing box facilitate the fixing and removal of the filter plate. The first collection box, the second collection box, etc., can be easily cleaned separately, ensuring the stability and reliability of the equipment during operation, and reducing the difficulty and cost of equipment maintenance. This is conducive to the long-term stable operation of the equipment and improves the efficiency of the entire rice processing process. When the auger conveyor and screening frame process the rice, the protective layer can reduce the impact force between the rice and them, prevent the rice from breaking due to strong impact, ensure the integrity of the rice, and at the same time prevent static electricity from attracting dust. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the material conveying rack and its internal structure.
[0018] Figure 3 This is a schematic diagram of the internal structure of the processing box of this utility model;
[0019] Figure 4 This is a schematic diagram of the drive mechanism structure of this utility model;
[0020] Figure 5 This is a schematic diagram of the filter plate distribution structure of this utility model;
[0021] Figure 6 This is a schematic diagram of the screening frame structure of this utility model.
[0022] In the diagram: 1. Processing box; 2. Conveying rack; 3. First collection box; 4. First suction fan; 5. Second suction fan; 6. Storage bin; 7. Screw conveyor; 8. Second collection box; 9. Drive mechanism; 901. Synchronous pulley; 902. Turntable; 903. Rocker arm; 10. Screening rack; 1001. Sliding block; 1002. Dust removal plate; 11. Drainage port; 12. Diversion channel; 13. Discharge plate; 14. Connecting frame; 15. Filter plate; 16. Buckle; 17. Gate. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figures 1 to 6 This utility model provides a technical solution: a multi-stage rice dust removal device, including a processing box 1. The top of the processing box 1 is bolted to a conveying frame 2 and a first collection box 3. The outer walls of the processing box 1 are bolted to both ends to a first suction fan 4 and a second suction fan 5. A storage bin 6 is fixedly connected to the top of the conveying frame 2. An auger 7 is rotatably connected inside the conveying frame 2. A second collection box 8 is tightly fitted to one side of the outer wall of the conveying frame 2. A screening frame 10 is movably connected to the processing box 1 via a drive mechanism 9 rotatably connected inside. A drain port 11 is fixedly connected to the inner top wall of the processing box 1. The bottom of one end of the conveying rack 2 is connected to the top of the inlet 11 via a pipe. A diversion trough 12 is slidably connected inside the processing box 1. The diversion trough 12 is located below the screening rack 10 and is attached to the bottom of the screening rack 10. A discharge plate 13 is welded to one side of the inner wall of the processing box 1. The discharge plate 13 is located below one end of the screening rack 10. A connecting frame 14 is fixedly connected to the outer wall of the processing box 1 at the position corresponding to the second suction fan 5. The bottom of the storage tank 6 is connected to the top of one end of the conveying rack 2 via a pipe. A gate 17 is rotatably connected inside the pipe between the storage tank 6 and the conveying rack 2.
[0025] The drive mechanism 9 consists of synchronous pulleys 901 and a turntable 902. The synchronous pulleys 901 are distributed vertically and are externally fitted with belts. The turntable 902 is fixedly connected to one of the synchronous pulleys 901 by a shaft passing through its axis. The turntable 902 is rotatably connected to the inner wall of the processing box 1, and the surface of the turntable 902 is rotatably connected to one end of a rocker arm 903 by a pin. The other end of the rocker arm 903 is rotatably connected to the outer wall of the screening frame 10.
[0026] In this embodiment, as Figure 1 and Figure 2As shown, both the top of the storage bin 6 and the first collection box 3 are rotatably connected to movable door panels, and the outer wall of the storage bin 6 is rotatably connected to the gate 17 at the position corresponding to the gate plate 17. The output end of the servo motor is fixedly connected to the gate plate 17. At the same time, the gate plate 17 forms a flipping structure in the pipe between the storage bin 6 and the conveying frame 2. The structure of the movable door panel on the top of the storage bin 6 facilitates the pouring of rice raw materials inside and ensures sealing during processing. Its shape can reduce the speed at which raw materials enter the conveying frame 2. The flipping structure of the gate plate 17 in the pipe between the storage bin 6 and the conveying frame 2, when closed, can effectively prevent materials from entering the conveying frame 2 prematurely through the pipe opening during the pouring process, even if there is material accumulation pressure in the storage bin 6.
[0027] In this embodiment, as Figure 2 As shown, the conveyor frame 2 has a slot that runs through the second collection box 8, and a metal grid plate is fixedly connected to the slot. The top of the second collection box 8 is arc-shaped and fits into the slot. The interior of the second collection box 8 is a hollow structure, and the bottom of the second collection box 8 is fixed to the surface of the processing box 1 by bolts. The air inlet of the first suction fan 4 is connected to the second collection box 8 through a pipe, and its air outlet is connected to the first collection box 3 through a pipe. Compared with the method of material directly entering the equipment and relying on vibration for processing, the addition of the auger 7 structure makes the rice flow dynamically. This dynamic conveying creates more favorable conditions for dust separation. When the first suction fan 4 is working, the dust in the rice flowing with the rotation of the auger 7 is more easily lifted and carried away by the airflow generated by the suction fan. It enters the second collection box 8 through the slot and is then collected into the interior of the first collection box 3 through the pipe. This can remove a large amount of dust before the material enters the main processing stage, reducing the burden on subsequent processing equipment.
[0028] In this embodiment, as Figure 5 As shown, the connecting frame 14 is composed of two sets of interlocking quadrilateral inner and outer metal frames, and the inner frame is welded to the outer wall of the processing box 1. Through holes for threaded bolts are opened at the connection points between the inner and outer metal frames. The second suction fan 5 is fixed to the surface of the outer metal frame by bolts, and an independent cavity is formed between the inner and outer metal frames. The cavity formed by the connecting frame 14 provides convenient installation and disassembly conditions for the filter plate 15. During the rice dust removal process, the filter plate 15 will intercept a large amount of dust and fine impurities, and it is easy to become clogged after long-term use. The installation and disassembly points provided by this independent cavity allow the filter plate 15 to be cleaned regularly. The existence of the independent cavity of the connecting frame 14 allows the dust to form a certain airflow pattern in the cavity, which is more conducive to being sucked away by the second suction fan 5.
[0029] In this embodiment, as Figure 5As shown, a square slot for inserting and connecting the filter plate 15 is opened through one side of the processing box 1 at the position corresponding to the connecting frame 14. Buckles 16 are rotatably connected to both ends of the filter plate 15 on the outer wall of the processing box 1. The filter plate 15 is secured to the inner wall of the square slot of the processing box 1 by the buckles 16. Meanwhile, the air inlet and outlet of the second suction fan 5 are connected to the cavity where the connecting frame 14 is located and the first collection box 3 via pipes. The through square slot specifically designed for the filter plate 15 on the processing box 1 allows the filter plate 15 to be precisely installed at a key position in the airflow channel. During the processing of the rice, dust is carried by the airflow through the cavity where the connecting frame 14 is located, while the rice raw material is intercepted by the filter plate 15. The dust flows into the first collection box 3 through the pipes, maximizing dust removal and providing a cleaner processing environment for the rice. This effectively avoids the possibility of dust separated by the vibration of the rice being re-adsorbed onto the surface of the raw material. When it is necessary to clean or replace the filter plate 15, the operator only needs to rotate the buckles 16 to easily remove the filter plate 15.
[0030] In this embodiment, as Figure 6 As shown, the screening frame 10 is slidably connected to the corresponding grooves at both ends of the inner wall of the processing box 1 via sliders 1001 fixed at both ends of its outer wall. A spring connects one side of the inner wall of the groove to one end of the slider 1001. The screening frame 10 is U-shaped, with a dust removal plate 1002 on the side adjacent to the filter plate 15. The other side of the dust removal plate 1002 is a solid plate with small circular through holes on its bottom surface. The screening frame 10 is driven by the drive mechanism 9 to form a reciprocating swing structure. It slides within the groove via the sliders 1001. The spring helps the screening frame 10 maintain a stable motion during the swing, ensuring that the rice is evenly screened on the screening frame 10, improving the accuracy and efficiency of the screening. The dust removal plate 1002 and the filter plate 15 are connected by a spring. With the filter plates 15 adjacent to each other, dust and fine impurities are stirred up during the vibration of the screening frame 10. At this time, the airflow generated by the second suction fan 5 can pass through the grid of the dust discharge plate 1002, efficiently introducing the dust and impurities into the first collection box 3 through the filter plates 15 and pipes. The rice raw material can be retained in the processing box 1 due to the interception of the filter plates 15, and is discharged from the discharge plate 13 in a progressive manner as the screening frame 10 moves back and forth. At the same time, during the movement of the screening frame 10, some broken or small stone particles can be discharged into the diversion trough 12 below through the circular through hole at the bottom. This is equivalent to completing a preliminary sorting work in the dust removal process, which can reduce the workload of subsequent sorting links, thereby shortening the total processing time of rice and improving production efficiency.
[0031] In this embodiment, as Figure 3As shown, the inlet 11 has a trumpet-shaped structure and is located directly above the screening frame 10; the trumpet-shaped inlet 11 has a large opening end, which can effectively discharge the rice conveyed from the bottom pipe of the conveying frame 2 into the interior of the processing box 1, so that the rice is evenly distributed on the surface of the screening frame 10.
[0032] The method of use and advantages of this utility model: The working process of this multi-stage rice dust removal device is as follows:
[0033] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, first, open the movable door panel on top of the storage hopper 6 and pour the rice raw material into the storage hopper 6. Then close the movable door panel to ensure sealing. During the pouring process, the gate 17 remains closed to prevent the raw material from entering the conveying frame 2 prematurely. When feeding is needed, the servo motor drives the gate 17 to flip, and the rice raw material enters the conveying frame 2 through the pipe. Under the action of the rotating auger 7 inside the conveying frame 2, it begins to be conveyed. At this time, the first suction fan 4 (CF-11) starts to work. Because the auger 7 keeps the rice in a dynamic flow state, the dust in the rice is more easily stirred up. The dust-laden airflow enters the second collection box 8 through the slot opened at the position corresponding to the second collection box 8 in the conveying frame 2. The grid mesh installed at the trough effectively intercepts the entry of rice grains. The rice grains are then collected by the first suction fan 4 and pipes into the first collection box 3. After preliminary airflow treatment, the rice grains enter the surface of the screening rack 10 inside the processing box 1 from the bottom of one end of the conveyor frame 2 through pipes and inlet 11. The funnel-shaped inlet 11 evenly disperses the rice grains on the screening rack 10. The drive mechanism 9 starts working. The synchronous pulleys 901 in the drive mechanism 9 are driven by belts. One set of synchronous pulleys 901 drives the turntable 902 fixedly connected to it to rotate. When the turntable 902 rotates, one end of the rocker arm 903 connected to its surface by a pin performs a circular motion. The circular motion at one end of the rocker arm 903 drives the screening frame 10 to move. Under the push of the rocker arm 903, the screening frame 10 slides along the direction of the chute. During this process, due to the action of the spring, the screening frame 10 deforms and provides a reverse elastic force as it slides, causing the screening frame 10 to swing back and forth. On the one hand, this achieves the screening of rice, making the rice continuously turn and move on the screening frame 10 to better separate impurities. On the other hand, in conjunction with the second suction fan 5 (CF-11) and dust removal plate 1002, the dust and fine impurities raised during the vibration are sucked away by the airflow, completing the dust removal operation. At the same time, some broken or small particles are removed. Stone particles and impurities are discharged into the diversion trough 12 below through the bottom circular through hole, while dust is introduced into the first collection box 3 through the pipe. After screening and dust removal, the rice raw material is progressively advanced with the reciprocating motion of the screening frame 10 and discharged from the discharge plate 13 of the processing box 1 to enter the next processing step. At the same time, in order to protect the rice, the surface of the auger 7 and the screening frame 10 is covered with a rubber layer to prevent the rice from breaking or dehulling due to mutual friction during the processing. The first collection box 3 is equipped with a movable door panel, the second collection box 8 can be disassembled by bolts, and the filter plate 15 can be installed and removed through the outer metal frame of the connecting frame 14, all of which can be used to clean the relevant filter structure.
[0034] 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 preferred examples and are not intended to limit the 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 claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A multi-stage rice dust removal device, comprising a processing box (1), characterized in that: The top of the processing box (1) is bolted to a conveying rack (2) and a first collection box (3). The outer walls of the processing box (1) are bolted to a first suction fan (4) and a second suction fan (5). A storage bin (6) is fixedly connected to the top of the conveying rack (2). An auger (7) is rotatably connected inside the conveying rack (2). A second collection box (8) is tightly fitted to one side of the outer wall of the conveying rack (2). A screening rack (10) is movably connected to the processing box (1) via a rotatably connected drive mechanism (9). A drain port (11) is fixedly connected to the top wall of the processing box (1). The bottom of one end of the conveying rack (2) is connected to the drain port (11). The top of 11) is connected by a pipe. The inside of the processing box (1) is slidably connected to a diversion groove (12). The diversion groove (12) is located below the screening frame (10) and is attached to the bottom of the screening frame (10). A discharge plate (13) is welded to one side of the inner wall of the processing box (1). The discharge plate (13) is located below one end of the screening frame (10). A connecting frame (14) is fixedly connected to the outer wall of the processing box (1) at the position corresponding to the second suction fan (5). The bottom of the storage bucket (6) is connected to the top of one end of the conveying frame (2) through a pipe. A gate plate (17) is rotatably connected inside the pipe between the storage bucket (6) and the conveying frame (2). The drive mechanism (9) consists of a synchronous pulley (901) and a turntable (902). The synchronous pulleys (901) are distributed vertically and are fitted with belts. The turntable (902) is fixedly connected to one of the synchronous pulleys (901) by a shaft passing through its axis. The turntable (902) is rotatably connected to the inner wall of the processing box (1), and the surface of the turntable (902) is rotatably connected to one end of a rocker arm (903) by a pin. The other end of the rocker arm (903) is rotatably connected to the outer wall of the screening frame (10).
2. The multi-stage rice dust removal device according to claim 1, characterized in that: The top of the storage bin (6) and the first collection box (3) are both rotatably connected to movable door panels, and the outer wall of the storage bin (6) is rotatably connected to the position of the gate plate (17), and the output end of the servo motor is fixedly connected to the gate plate (17). At the same time, the gate plate (17) forms a flipping structure in the pipe between the storage bin (6) and the conveying frame (2).
3. The multi-stage rice dust removal device according to claim 1, characterized in that: The feeding rack (2) has a slot that is connected to the second collection box (8) at the position of the slot, and a metal grid plate is fixedly connected to the slot. The top of the second collection box (8) is arc-shaped and fits into the slot. The interior of the second collection box (8) is a cavity structure. The bottom of the second collection box (8) is fixed to the surface of the processing box (1) by bolts. The air inlet of the first suction fan (4) is connected to the second collection box (8) through a pipe, and its air outlet is connected to the first collection box (3) through a pipe.
4. The multi-stage rice dust removal device according to claim 1, characterized in that: The connecting frame (14) is composed of two sets of quadrilateral inner and outer metal frames that are interlocked with each other, and the inner frame is welded to the outer wall of the processing box (1). The connection points between the inner and outer metal frames are provided with through holes for threaded bolts, and the second suction fan (5) is fixed to the surface of the outer metal frame by bolts. At the same time, an independent cavity is formed between the inner and outer metal frames.
5. The multi-stage rice dust removal device according to claim 1, characterized in that: A square slot for inserting and connecting the filter plate (15) is opened through one side of the processing box (1) at the position corresponding to the connecting frame (14). The outer wall of the processing box (1) is rotatably connected to both ends of the filter plate (15). The filter plate (15) is engaged with the inner wall of the square slot of the processing box (1) by the buckle (16). At the same time, the air inlet and air outlet of the second suction fan (5) are connected to the cavity where the connecting frame (14) is located and the first collection box (3) through pipes.
6. The multi-stage rice dust removal device according to claim 1, characterized in that: The screening frame (10) is slidably connected to the slide grooves corresponding to both ends of the inner wall of the processing box (1) by the sliders (1001) fixed at both ends of its outer wall. The inner wall of the slide groove is connected to one end of the slider (1001) by a spring. The screening frame (10) is U-shaped and has a dust discharge plate (1002) on the side adjacent to the filter plate (15). The other side of the dust discharge plate (1002) is a solid plate and has small circular through holes on the bottom plate surface.
7. The multi-stage rice dust removal device according to claim 1, characterized in that: The drain port (11) has a trumpet-shaped structure and is located directly above the screening frame (10).