Multi-stage screening husked rice separator
By combining multi-stage screening with the use of shaking, dust extraction, and cleaning components, the design solves the problems of low screening accuracy and incomplete impurity removal in existing paddy rice separation equipment, achieving efficient and clean paddy rice separation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN JINGGU STORAGE EQUIP CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-04-17
AI Technical Summary
Existing bran separation equipment suffers from problems such as low screening accuracy, incomplete impurity removal, low product purity, and high subsequent processing costs due to the lack of a multi-stage grading mechanism.
Design a multi-stage sieving rice and chaff separator, which uses inclined screening frames one and two, combined with filter screen one and filter screen two for multi-stage sieving, and is equipped with a shaking component, a dust collection component and a cleaning component to achieve step-by-step separation of materials and environmental cleaning.
It improves screening efficiency and accuracy, reduces dust pollution, enhances equipment stability and ease of maintenance, and ensures the purity and processing quality of the finished product.
Smart Images
Figure CN224127845U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a multi-stage sieving rice-rice separator. Background Technology
[0002] Paddy rice (or hulled paddy) is the primary product obtained after paddy rice has been hulled. It resembles rice in appearance but is still covered with a layer of bran and requires further processing to become edible rice. During grain processing, hulled paddy inevitably contains unhulled paddy, debris, and impurities. If these are not separated, they will directly affect the quality and yield of subsequent processing. Therefore, hulled paddy separators, as one of the key pieces of equipment in grain processing, are widely used in grain processing plants and mechanized agricultural production. This type of equipment is mainly used to effectively separate hulled paddy from unhulled paddy and other impurities to improve subsequent processing efficiency and product quality.
[0003] Most grain-brown grain separation equipment on the market currently uses a single screening structure, which is difficult to adapt to the significant differences in particle size and density between different batches of grain. This results in low separation accuracy, poor screening efficiency, and a tendency for missed or incorrect screening, leading to large fluctuations in screening results and affecting the stability of subsequent processing quality. Furthermore, due to the lack of a multi-stage grading mechanism during screening, fine impurities may pass through the sieve openings along with the target material, causing a decrease in the purity of the finished product and increasing the cost of subsequent manual selection or secondary processing. These problems limit the working efficiency and stability of grain-brown grain separation equipment in practical applications and pose greater challenges to processing quality control.
[0004] Therefore, it is necessary to design a multi-stage screening and husking machine to solve the above-mentioned technical problems. Utility Model Content
[0005] In order to overcome the shortcomings of existing equipment, such as low screening accuracy, incomplete impurity removal, low purity of finished product, and high subsequent processing costs due to the lack of a multi-stage grading mechanism, this utility model provides a multi-stage screening rice bran separator.
[0006] The technical solution is as follows: A multi-stage sieving rice and chaff separator includes a mounting frame, a mounting plate, a first sieving frame, a second sieving frame, a discharge frame, a first filter screen, a second filter screen, a connecting assembly, a shaking assembly, a dust collection assembly, and a cleaning assembly. The mounting plate is fixedly connected between the front and rear sides of the upper part of the mounting frame. The first sieving frame is located on the upper part of the mounting plate, with a discharge port on the top right side of the first sieving frame. The second sieving frame is located between the lower part of the mounting plate and the middle of the mounting frame. Both the first and second sieving frames are inclined from left to right, and their bottoms are connected... The screen is connected to a funnel-shaped discharge frame. The top of the screening frame 2 has a discharge port 2 corresponding to the discharge frame on the lower side of the screening frame. A filter screen 1 is installed at the connection between the screening frame 1 and the discharge frame, and a filter screen 2 is installed at the connection between the screening frame 2 and the discharge frame. Connecting components are installed on the front and rear sides of the screening frame 1 and the screening frame 2. Shaking components are installed on the lower right side and between the front and rear sides of the screening frame 1 and the screening frame 2. Dust collection components are installed on the left and right sides of the discharge frame of the screening frame 1. Cleaning components are installed on the rear side of both the screening frame 1 and the screening frame 2.
[0007] Optionally, the connecting assembly includes a gas spring one, a gas spring two, and a hinge block. Gas spring one with its output shaft facing upward is installed on both the front and rear sides of the middle of the mounting frame and the top left side of the mounting plate. A hinge block is hinged between the output ends of gas spring one on both the front and rear sides. The lower part of the hinge block is hinged to the front and rear sides of the corresponding screening frame one and screening frame two respectively. Gas spring two with its output shaft facing upward is installed on both the front and rear sides of the middle of the mounting frame and the top right side of the mounting plate. Gas spring two on both the front and rear sides is hinged to the bottom rear side of the corresponding screening frame one and screening frame two.
[0008] Optionally, the vibration assembly includes a motor, a crankshaft, a pulley assembly, and a connecting rod. A motor with its output shaft facing forward is installed in the middle of the mounting frame and on the rear top of the mounting plate. A crankshaft is rotatably connected between the mounting frame and the front and rear sides of the rear of the mounting plate. A pulley assembly is provided between the middle of the crankshaft and the output shaft of the motor. The extended end of the crankshaft passes through the front and rear sides of the mounting frame and the mounting plate and is eccentrically rotatably connected to a connecting rod. The other end of the connecting rod is hinged to the front and rear sides of the middle of the corresponding screening frame one and screening frame two.
[0009] Optionally, the dust collection assembly includes a baffle plate 1, a baffle plate 2, a blower assembly, a filter screen 3, an exhaust fan, and a dust collection hood. A baffle plate 1, which is inclined to the left and right, is fixedly connected to the left side of the discharge frame below the screening frame. A baffle plate 2, which is inclined to the left and right, is fixedly connected to the right side of the discharge frame. The baffle plate 1 is higher than the baffle plate 2 and is longer. A blower assembly is provided on the right side of the discharge frame below the screening frame. A filter screen 3 is provided at the connection between the blower assembly and its interior. Both the blower assembly and the filter screen 3 are located below the baffle plate 2. An exhaust fan is provided on the left side of the discharge frame below the screening frame. A dust collection hood is provided at the connection between the exhaust fan and its interior. Both the exhaust fan and the dust collection hood are located below the baffle plate 2.
[0010] Optionally, the cleaning component includes a guide rod, a scraper, and a first spring. The guide rod is slidably connected to the right side of both the first and second screening frames. The left end of the guide rod extends into the interior of the first and second screening frames and is fixedly connected to a scraper. The scraper slides in cooperation with the interior of the corresponding first and second screening frames. A first spring is provided between the right side of the first and second screening frames and the guide rod.
[0011] Optionally, the left side of screening frame one is curved downward and has a material discharge chute, and the left side of screening frame two is also provided with a material discharge chute. The bottom of the mounting frame is provided with a collection frame for receiving the material after screening by filter screen one and filter screen two.
[0012] The beneficial effects are: 1. The present invention sets the screening frame one and screening frame two in an inclined state with the left lower and the right higher, and cooperates with filter screen one and filter screen two to achieve multi-stage screening, so that the grain and coarse mixture is separated step by step under the action of gravity and vibration, thereby improving screening efficiency and separation accuracy.
[0013] 2. This utility model, through the staggered and inclined distribution design of baffle one and baffle two in the dust collection component, combined with the synergistic effect of the blowing component and the exhaust fan, continuously adsorbs and secondary blows suspended dust during the screening process, thereby improving the working environment and reducing dust pollution.
[0014] 3. This utility model, through the guide rod, scraper and first spring structure in the cleaning component, can easily remove residual materials in the screening frame after screening, avoiding blockage and cross-contamination. At the same time, the gas spring in the connecting component works with the hinge block to shake the component, thereby improving the stability of the equipment and the convenience of maintenance. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0016] Figure 2 This is a structural schematic diagram of the mounting plate, discharge frame, and screening frame of this utility model.
[0017] Figure 3 This is a schematic diagram of the crankshaft structure of this utility model.
[0018] Figure 4 This is a structural schematic diagram of the screening frame one, screening frame two, and air blowing assembly of this utility model.
[0019] Figure 5 This is a cross-sectional structural diagram of the filter screen, baffle, and dust cover of this utility model.
[0020] The meanings of the reference numerals in the attached diagram are as follows: 1_Mounting frame, 2_Mounting plate, 3_Screening frame one, 31_Discharge frame, 4_Gas spring one, 41_Gas spring two, 5_Hinge block, 6_Connecting rod, 7_Crankshaft, 8_Pulley assembly, 9_Motor, 10_Screening frame two, 11_Filter screen one, 111_Filter screen two, 112_Filter screen three, 12_Baffle one, 121_Baffle two, 13_Blower assembly, 14_Dust hood, 15_Exhaust fan, 16_Guide rod, 17_Scraper, 18_First spring. Detailed Implementation
[0021] Example: A multi-stage sieving paddy rice separator, such as... Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the system includes a mounting frame 1, a mounting plate 2, a first screening frame 3, a second screening frame 10, a discharge frame 31, a first filter screen 11, a second filter screen 111, a connecting assembly, a shaking assembly, a dust collection assembly, and a cleaning assembly. The mounting plate 2 is bolted to the upper front and rear sides of the mounting frame 1. The first screening frame 3 is mounted on the upper part of the mounting plate 2, with a discharge port on the top right side of the first screening frame 3. The second screening frame 10 is positioned between the lower part of the mounting plate 2 and the middle of the mounting frame 1. Both the first screening frame 3 and the second screening frame 10 are inclined from left to right. The bottoms of both the first screening frame 3 and the second screening frame 10 are connected to a funnel-shaped discharge frame 31. The top of the second screening frame 10 has a corresponding discharge frame 31 on the lower side of the first screening frame 3. The second discharge port, the connection between the screening frame 1 3 and the discharge frame 31 is provided with a filter screen 11, the connection between the screening frame 2 10 and the discharge frame 31 is provided with a filter screen 2 111, the left side of the screening frame 1 3 is curved downward and has a discharge trough, the left side of the screening frame 2 10 also has a discharge trough, the bottom of the mounting frame 1 is provided with a collection frame for receiving the material after screening by the filter screen 11 and the filter screen 2 111, the front and rear sides of the screening frame 1 3 and the screening frame 2 10 are respectively provided with connecting components, the lower right side of the screening frame 1 3 and the screening frame 2 10 and the front and rear sides are respectively provided with shaking components, the left and right sides of the discharge frame 31 of the screening frame 1 3 are provided with dust suction components, and the rear side of the screening frame 1 3 and the screening frame 2 10 are both provided with cleaning components.
[0022] like Figure 1 and Figure 2As shown, the connecting assembly includes a gas spring 4, a gas spring 41, and a hinge block 5. Gas springs 4 with their output shafts facing upwards are installed on the front and rear sides of the middle of the mounting frame 1 and the top left side of the mounting plate 2. The output ends of the gas springs 4 on the front and rear sides are hinged to the hinge block 5. The lower part of the hinge block 5 is hinged to the front and rear sides of the corresponding screening frame 3 and screening frame 10 respectively. Gas springs 41 with their output shafts facing upwards are installed on the front and rear sides of the middle of the mounting frame 1 and the top right side of the mounting plate 2. The gas springs 41 on the front and rear sides are hinged to the bottom rear side of the corresponding screening frame 3 and screening frame 10.
[0023] like Figure 1 , Figure 2 and Figure 3 As shown, the vibration assembly includes a motor 9, a crankshaft 7, a pulley assembly 8, and a connecting rod 6. The motor 9 with its output shaft facing forward is installed in the middle of the mounting frame 1 and on the rear top of the mounting plate 2. The crankshaft 7 is rotatably connected between the front and rear sides of the rear of the mounting frame 1 and the mounting plate 2. The pulley assembly 8 is provided between the middle of the crankshaft 7 and the output shaft of the motor 9. The extended end of the crankshaft 7 passes through the front and rear sides of the mounting frame 1 and the mounting plate 2 and is eccentrically rotatably connected to the connecting rod 6. The other end of the connecting rod 6 is hinged to the front and rear sides of the middle of the corresponding screening frame 1 3 and screening frame 2 10.
[0024] like Figure 1 and Figure 5 As shown, the cleaning assembly includes a guide rod 16, a scraper 17, and a first spring 18. The guide rod 16 is slidably connected to the right side of both the first screening frame 3 and the second screening frame 10. The left end of the guide rod 16 extends into the interior of the first screening frame 3 and the second screening frame 10, and is connected to the scraper 17 by bolts. The scraper 17 slides in cooperation with the interior of the corresponding first screening frame 3 and the second screening frame 10. The first spring 18 is provided between the right side of the first screening frame 3 and the second screening frame 10 and the guide rod 16.
[0025] Operators can apply the corresponding technical solutions in this device to the screening and separation of grain-brown mixtures during grain processing, depending on the specific circumstances. When this device is needed to assist in the separation of grain-brown materials, the grain-brown mixture to be screened is first fed into the discharge port 1 above screening frame 3. At this time, screening frame 3 and screening frame 2 10 are inclined on the left and right, and the material slides down naturally and is evenly distributed under the action of gravity.
[0026] The vibration assembly is then activated. The operator first starts motor 9, which drives crankshaft 7 via pulley set 8. Crankshaft 7 drives connecting rods 6 on both sides to rotate, causing eccentric motion. This drives screening frames 1 3 and 2 10 to vibrate periodically, improving material flowability. During this process, gas springs 1 4 and 2 41 in the connecting assembly are flexibly connected to the screening frames via hinge block 5, providing support while absorbing some vibration energy, making the screening process smoother and quieter. Under the combined action of vibration and tilt angle, the material slides forward and is fully dispersed, thereby improving screening efficiency.
[0027] During the screening process, filter screen 11 is used to initially remove smaller particles of brown rice or debris, causing them to fall into the discharge frame 31 below; while larger particles or unhulled grains continue to move to the right, enter the screening frame 10 through the discharge port 2, and complete secondary screening under the action of its filter screen 111, thereby achieving a multi-stage separation effect.
[0028] like Figures 1-5 As shown, the dust collection assembly includes a first baffle 12, a second baffle 121, a blower assembly 13, a third filter 112, an exhaust fan 15, and a dust collection hood 14. The first baffle 12, which is inclined to the left and right, is fixedly connected to the left side of the discharge frame 31 below the screening frame 3. The second baffle 121, which is inclined to the left and right, is fixedly connected to the right side of the discharge frame 31. The first baffle 12 is higher than the second baffle 121 and is longer. The blower assembly 13 is located on the right side of the discharge frame 31 below the screening frame 3. A third filter 112 is located at the connection between the blower assembly 13 and its interior. Both the blower assembly 13 and its third filter 112 are located below the second baffle 121. The exhaust fan 15 is located on the left side of the discharge frame 31 below the screening frame 3. A dust collection hood 14 is located at the connection between the exhaust fan 15 and its interior. Both the exhaust fan 15 and its dust collection hood 14 are located below the second baffle 121.
[0029] To improve cleanliness and working environment, the operator can simultaneously turn on the dust collection components before screening begins. The exhaust fan 15 draws in air through the dust collection hood 14 to create negative pressure, while the blower component 13 blows airflow into the discharge frame 31. The two work together to form a directional airflow circulation, effectively adsorbing and carrying away the dust generated during screening, preventing it from accumulating inside the equipment and affecting subsequent operations. When the material slides from the screening frame 3 into the discharge frame 31, it first passes through the inclined baffle 12. Its higher position not only prevents the material from directly impacting the dust collection hood 14 and causing blockage, but also guides the material to disperse. The material then slides down baffle 12 to baffle 212. Because baffle 212 is inclined from left to right, the material spreads out further here, exposing more surface area, which makes it easier for the exhaust fan 15 to effectively adsorb suspended dust and fine debris. Then, the blowing assembly 13 blows air onto the surface of the material again, blowing up any remaining particles so that they are more easily captured by the exhaust fan 15, forming a continuous dust removal flow process and achieving secondary dust removal treatment of the material.
[0030] After screening, if it is necessary to clean the residual material in the screening frame, the operator can manually push the guide rod 16 to slide to the right, insert the scraper 17 into the screening frame, and compress the first spring 18 accordingly. Then, release the guide rod 16, and rely on the rebound force of the first spring 18 to drive the scraper 17 to automatically reset, thereby removing the residue on the inner wall of the screening frame and improving the screening efficiency for the next time.
[0031] Finally, the lighter materials, such as rice husks and debris, after two-stage screening will slide down to the discharge chute on the left side of the screening frame under vibration and be discharged. A waste collection box can be placed in front of the mounting frame 1 to collect these impurities for unified treatment. The whole brown rice, after being screened by filter screen 11 and filter screen 211, falls into the discharge box 31 in sequence and is guided by its funnel-shaped structure to the collection box for unified recycling.
Claims
1. A multi-stage sieving husker and separator, characterized by, The system includes a mounting frame (1), a mounting plate (2), a screening frame 1 (3), a screening frame 2 (10), a discharge frame (31), a filter screen 1 (11), a filter screen 2 (111), a connecting component, a shaking component, a dust collection component, and a cleaning component. The mounting plate (2) is fixedly connected between the front and rear sides of the upper part of the mounting frame (1). The screening frame 1 (3) is set on the upper part of the mounting plate (2). The top right side of the screening frame 1 (3) has a discharge port. The screening frame 2 (10) is set between the lower part of the mounting plate (2) and the middle part of the mounting frame (1). The screening frame 1 (3) and the screening frame 2 (10) are both inclined with the left side lower than the right side. The bottom of the screening frame 1 (3) and the screening frame 2 (10) are connected and connected in a funnel shape. The discharge frame (31) of the screening frame (2) has a discharge port (2) at the top corresponding to the discharge frame (31) on the lower side of the screening frame (3). A filter screen (11) is provided at the connection between the screening frame (3) and the discharge frame (31). A filter screen (211) is provided at the connection between the screening frame (2) and the discharge frame (31). Connecting components are provided on the front and rear sides of the screening frame (3) and the screening frame (2) and the screening frame (31). Shaking components are provided on the lower right side and between the front and rear sides of the screening frame (3) and the screening frame (2) and the screening frame (10). Dust suction components are provided on the left and right sides of the discharge frame (31) of the screening frame (3). Cleaning components are provided on the rear side of the screening frame (3) and the screening frame (2) and the screening frame (10).
2. A multi-stage classifer according to claim 1, wherein, The connecting components include a gas spring 1 (4), a gas spring 2 (41) and a hinge block (5). Gas spring 1 (4) with its output shaft facing upward is installed on the front and rear sides of the middle of the mounting frame (1) and the top left side of the mounting plate (2). A hinge block (5) is hinged between the output ends of the gas spring 1 (4) on the front and rear sides. The lower part of the hinge block (5) is hinged to the front and rear sides of the corresponding screening frame 1 (3) and screening frame 2 (10) respectively. Gas spring 2 (41) with its output shaft facing upward is installed on the front and rear sides of the middle of the mounting frame (1) and the top right side of the mounting plate (2). Gas spring 2 (41) on the front and rear sides is hinged to the bottom rear side of the corresponding screening frame 1 (3) and screening frame 2 (10).
3. A multi-stage classifer according to claim 2, wherein, The shaking assembly includes a motor (9), a crankshaft (7), a pulley assembly (8), and a connecting rod (6). The middle part of the mounting frame (1) and the rear top of the mounting plate (2) are both equipped with motors (9) with their output shafts facing forward. The front and rear sides of the rear part of the mounting frame (1) and the mounting plate (2) are rotatably connected to the crankshaft (7). The middle part of the crankshaft (7) and the output shaft of the motor (9) are provided with a pulley assembly (8). The extended end of the crankshaft (7) passes through the front and rear sides of the mounting frame (1) and the mounting plate (2) and is eccentrically rotatably connected to the connecting rod (6). The other end of the connecting rod (6) is hinged to the front and rear sides of the middle part of the corresponding screening frame one (3) and screening frame two (10).
4. A multi-stage classifer according to claim 3, wherein, The dust collection assembly includes baffle one (12), baffle two (121), blower assembly (13), filter three (112), exhaust fan (15), and dust collection hood (14). Baffle one (12), which is inclined to the left and right, is fixedly connected to the left side of the discharge frame (31) under the screening frame one (3). Baffle two (121), which is inclined to the left and right, is fixedly connected to the right side of the discharge frame (31). Baffle one (12) is higher than baffle two (121) and is longer. A blower assembly (13) is provided on the right side of the discharge frame (31) on the lower side. A filter screen (112) is provided at the connection between the blower assembly (13) and its interior. The blower assembly (13) and its filter screen (112) are both located below the baffle (121). A blower (15) is provided on the left side of the discharge frame (31) on the lower side of the screening frame (3). A dust hood (14) is provided at the connection between the blower (15) and its interior. The blower (15) and its dust hood (14) are both located below the baffle (121).
5. A multi-stage classifer husker as claimed in claim 4, wherein, The cleaning assembly includes a guide rod (16), a scraper (17), and a first spring (18). The guide rod (16) is slidably connected to the right side of both the first screening frame (3) and the second screening frame (10). The left end of the guide rod (16) extends into the interior of the first screening frame (3) and the second screening frame (10) and is fixedly connected to the scraper (17). The scraper (17) slides in cooperation with the interior of the corresponding first screening frame (3) and the second screening frame (10). The first spring (18) is provided between the right side of the first screening frame (3) and the second screening frame (10) and the guide rod (16).
6. A multi-stage classifer husker as claimed in claim 5, wherein, Screening frame 1 (3) is curved downward on the left and has a material discharge chute. Screening frame 2 (10) also has a material discharge chute on the left. The bottom of the mounting frame (1) is equipped with a collection frame for receiving the material after screening by filter screen 1 (11) and filter screen 2 (111).