White rice sieve for rice grading
By employing a dual-filter structure with auger blades in the rice sieve, the rice is turned over and moved forward steadily, solving the problems of uncertainty and obstruction in the existing sieving technology and improving the efficiency and quality of rice grading.
Patent Information
- Application Number
- CN202422809435.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-11-19
AI Technical Summary
Existing rice sieves lack control over the rolling speed of the rice during the sieving process, leading to uncertainty in the sieving results and obstruction of the rice below from the rice above, thus affecting the sieving effect.
The dual-filter structure with auger blades features a rotating first and second screen that tumbles the rice. The auger blades limit the rice's movement trajectory, and the outer and inner baffles ensure stable rice movement. The multi-stage sieves achieve efficient grading.
It improves the stability and efficiency of rice screening, ensures that rice is graded according to the expected trajectory, reduces clogging, and enhances the reliability and quality of screening results.
Smart Images
Figure CN223505607U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of white rice sieve technology, and in particular to a white rice sieve for grading rice. Background Technology
[0002] After harvesting, rice is usually graded using a rice sieve to increase its economic benefits. The rice sieve grades the rice based on the size and integrity of the grains.
[0003] In existing technologies, rice is mainly screened using a sieve plate. Since the sieve plate is relatively flat, it is necessary to tilt the sieve plate to a certain angle to ensure the flowability of the rice above the sieve plate. This results in the sieve plate lacking the ability to control the rolling speed of the rice above it, which increases the uncertainty of the screening results. At the same time, the sieve plate cannot turn over the rice above it, causing the rice below to obstruct the screening of the rice above, affecting the final screening results. Utility Model Content
[0004] The purpose of this utility model is to provide a white rice sieve for rice grading. This white rice sieve can separate the mesh surfaces of the first screen and the second screen into a spiral double filter screen through the auger blades. As the rice rotates, it rolls along the auger blades, and the first screen and the second screen will drive the rice above them to continuously turn over, achieving a higher sieving effect.
[0005] This utility model provides a white rice sieve for rice grading, comprising:
[0006] The first screen is a cylindrical screen placed horizontally.
[0007] The second screen is sleeved on the outside of the first screen, and there is a gap between the second screen and the first screen. The aperture of the second screen is smaller than that of the first screen.
[0008] The jiaolong blade is fixedly connected to the first screen and the second screen. The inner edge of the jiaolong blade penetrates the first screen inward, and the outer edge of the jiaolong blade abuts against the second screen outward.
[0009] Ungraded white rice is added to one end of the inner side of the first screen. The first screen, the second screen, and the auger blades rotate. The auger blades drive the white rice to the other end of the first screen. At the same time, the first screen and the second screen screen the white rice for screening and grading.
[0010] Preferably, an outer baffle is also provided on the outside of the second screen, with a gap between the outer baffle and the second screen, the outer edge of the auger blade abutting the inside of the outer baffle, and a discharge port is provided at one end of the outer baffle.
[0011] Preferably, the outer baffle is fixedly connected to the auger blade, the discharge port is a rectangular groove evenly opened on the cylindrical surface of the outer baffle, a collector is fitted on the outer baffle, the collector is a hollow inner ring, the lower end of the collector is integrally formed with a discharge port, and the collector is fitted on the outer baffle at the position of the discharge port.
[0012] Preferably, an inner baffle is provided between the first screen and the second screen, and one end of the inner baffle is provided with a discharge port. There are gaps between the inner baffle and the first screen and the second screen. The inner baffle divides the auger blade into two parts, and the two parts of the auger blade rotate in opposite directions.
[0013] Preferably, the auger blade is divided into four parts, which are respectively fixedly connected to the inner walls of the first screen, the second screen, the outer baffle, and the inner baffle. The auger blades on the first screen and the second screen rotate in the same direction, the auger blades on the outer baffle and the inner baffle rotate in the same direction, and the auger blades on the first screen, the second screen, the outer baffle, and the inner baffle rotate in opposite directions.
[0014] Preferably, the rice grading sieve further includes a third sieve, which is sleeved on the outside of the second sieve, with a gap between the third sieve and the second sieve. The aperture of the second sieve is smaller than that of the second sieve, and the outer edge of the dragon blade extends outward through the second sieve and abuts against the third sieve.
[0015] Preferably, the outer baffle has three discharge ports, which are respectively connected to the gaps between the first screen, the second screen, the outer baffle and the third screen, and each discharge port is individually fitted with a collector.
[0016] Preferably, the three discharge ports on the outer baffle are all located near both ends of the outer baffle.
[0017] Preferably, the rice sieve for grading rice further includes a hair dryer, which is placed horizontally with its air outlet facing the end of the first sieve where ungraded white rice is added.
[0018] Preferably, the first and second screens have chamfered edges on the side of the mesh openings near the center.
[0019] The technical solution of this utility model uses the rotation of the first screen and the second screen to drive the rice inside to turn over. The rotation speed of the first screen and the second screen will also affect the rolling speed of the rice on the screen surface. At the same time, the dragon blades limit the rice inside to determine the movement trajectory of the rice and ensure that the rice inside moves forward stably. Attached Figure Description
[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 This is an isometric view of a white rice sieve for grading rice according to this utility model;
[0022] Figure 2 for Figure 1 Cross-sectional view of a white rice sieve used for grading medium-sized rice after the outer baffle is installed;
[0023] Figure 3 for Figure 2 Cross-sectional view of a white rice sieve used for grading medium-sized rice after the inner baffle is installed;
[0024] Figure 4 for Figure 2 Cross-sectional view of a white rice sieve with a third screen added for grading medium-sized rice;
[0025] Figure 5 for Figure 2 Axonometric view of the collector in a white rice sieve used for grading medium-sized rice;
[0026] Figure 6 for Figure 1 A partial cross-sectional view of the first screen in a white rice sieve used for grading medium-sized rice.
[0027] Explanation of reference numerals in the attached figures:
[0028] 1. First screen; 2. Second screen; 3. Drone blades; 4. Outer baffle; 41. Collector; 5. Inner baffle; 6. Third screen; 7. Blower. Detailed Implementation
[0029] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0031] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0032] Combination Figures 1 to 6 As shown, the rice sieve for grading rice provided by this utility model includes a first sieve 1, a second sieve 2, and a dragon blade 3.
[0033] Combination Figures 1 to 6 As shown, the first screen 1 is a cylindrical mesh placed horizontally; the second screen 2 is sleeved on the outside of the first screen 1, with a gap between the second screen 2 and the first screen 1, and the aperture of the second screen 2 is smaller than that of the first screen 1; the auger blade 3 is fixedly connected to the first screen 1 and the second screen 2, the inner edge of the auger blade 3 penetrates the first screen 1 inward, and the outer edge of the auger blade 3 abuts against the second screen 2 outward; ungraded white rice is added to one end of the inner side of the first screen 1, the first screen 1, the second screen 2 and the auger blade 3 rotate, the auger blade 3 drives the white rice to move to the other end of the first screen 1, and at the same time the first screen 1 and the second screen 2 screen and grade the white rice.
[0034] In this embodiment, the rotation of the first screen 1 and the second screen 2 causes the rice inside to tumble. The rotation speed of the first screen 1 and the second screen 2 also synchronously affects the rolling speed of the rice on the screen surface. At the same time, the dragon blade 3 limits the movement of the rice inside to determine the trajectory of the rice and ensure that the rice inside moves forward steadily.
[0035] In some embodiments, combined with Figure 2 As shown, an outer baffle 4 is also fitted on the outside of the second screen 2. There is a gap between the outer baffle 4 and the second screen 2. The outer edge of the auger blade 3 abuts against the inside of the outer baffle 4. One end of the outer baffle 4 is provided with a discharge port. The function of the outer baffle 4 is to collect the graded rice and discharge it through the discharge port. The auger blade 3 also helps to prevent the rice from accumulating inside the outer baffle 4.
[0036] In some embodiments, combined with Figure 2 , Figure 5 As shown, the outer baffle 4 is fixedly connected to the dragon blade 3. The discharge port is a rectangular groove evenly opened on the cylindrical surface of the outer baffle 4. A collector 41 is fitted on the outer baffle 4. The collector 41 is a hollow inner ring. The lower end of the collector 41 is integrally formed with a discharge port. The collector 41 is fitted on the outer baffle 4 at the position of the discharge port. Because the outer baffle 4 needs to rotate, the discharge port is designed as a rectangular groove evenly opened on the cylindrical surface to ensure that the outer baffle 4 can stably discharge rice during rotation. However, although the discharge effect of this type of discharge port is stable, the landing point of the discharged rice is not stable. Therefore, the collector 41 is added to collect the discharged rice a second time. At the same time, the position of the discharge port of the collector 41 is fixed, which makes it more convenient to receive the rice.
[0037] In some embodiments, combined with Figure 3 As shown, an inner baffle 5 is also sleeved between the first screen 1 and the second screen 2. One end of the inner baffle 5 is provided with a discharge port. There are gaps between the inner baffle 5 and the first screen 1 and the second screen 2. The inner baffle 5 divides the auger blades 3 into two parts. The two parts of the auger blades 3 rotate in opposite directions. The inner baffle 5 can gather the rice passing through the first screen 1 to one side of the second screen 2, ensuring the rolling distance of the rice on the second screen 2, so as to ensure the grading effect.
[0038] In some embodiments, combined with Figure 3As shown, the auger blade 3 is divided into four parts, which are fixedly connected to the inner walls of the first screen 1, the second screen 2, the outer baffle 4, and the inner baffle 5, respectively. The auger blades 3 on the first screen 1 and the second screen 2 rotate in the same direction, and the auger blades 3 on the outer baffle 4 and the inner baffle 5 rotate in the same direction. The auger blades 3 on the first screen 1, the second screen 2, the outer baffle 4, and the inner baffle 5 rotate in opposite directions. The auger blades 3 on the first screen 1 and the second screen 2 drive the rice to move to the other side, preventing the rice from staying inside and causing blockage. The auger blades 3 on the outer baffle 4 and the inner baffle 5 collect the rice back to the rice adding end, ensuring the rolling distance of the rice on the first screen 1 and the second screen 2.
[0039] In some embodiments, combined with Figure 4 As shown, the rice grading sieve also includes a third sieve 6, which is fitted outside the second sieve 2. A gap is left between the third sieve 6 and the second sieve 2. The aperture of the second sieve 2 is smaller than that of the second sieve 2. The outer edge of the dragon blade 3 extends outward through the second sieve 2 and abuts against the third sieve 6. The addition of the third sieve 6 can increase the grading result of rice by one level. The number of sieves can be selected according to the actual situation. At the same time, a second inner baffle 5 can also be added to the third sieve 6.
[0040] In some embodiments, combined with Figure 4 As shown, the outer baffle 4 has three discharge ports, which are respectively connected to the gaps between the first screen 1, the second screen 2, the outer baffle 4 and the third screen 6. Each discharge port is equipped with a separate collector 41. After the rice is graded, it needs to be discharged from different discharge ports. The three discharge ports correspond to the three screens. The number of screens can be adjusted according to the changes in demand, and the number of discharge ports should also change with the change in the number of screens.
[0041] In some embodiments, combined with Figure 4 As shown, the three discharge ports on the outer baffle 4 are all located near both ends of the outer baffle 4. The discharge ports near both ends of the outer baffle 4 facilitate the internal auger blades 3 to transport the rice to the discharge ports. At this time, the auger blades 3 only need to continuously transport the rice to the discharge ports. When the discharge port is located in the center of the outer baffle 4, the auger blades 3 need to complete the transportation work in two directions to transport the rice to the discharge port.
[0042] In some embodiments, combined with Figure 2As shown, the rice sieve for rice grading also includes a blower 7. The blower 7 is placed horizontally with its air outlet facing the end of the first sieve 1 where ungraded white rice is added. The air generated by the blower 7 can blow away impurities in the rice, improve the quality of the graded rice, and at the same time help to maintain the temperature of the rice and prevent the temperature of the rice from rising rapidly during the turning process.
[0043] In some embodiments, combined with Figure 6 As shown, the first screen 1 and the second screen 2 have chamfered edges on the side of the mesh near the center. The chamfer helps rice to enter the mesh, thereby improving the efficiency of rice grading.
[0044] Working process: Ungraded white rice is added to one end of the inner side of the first screen 1. The first screen 1 and the second screen 2 start to rotate, causing the rice inside to tumble. At the same time, under the action of the auger blades 3, the rice moves at a constant speed towards the other end of the first screen 1. During this period, the rice continuously rolls on the mesh surface of the first screen 1. Some rice passes through the mesh holes on the first screen 1 and enters between the first screen 1 and the second screen 2. The second screen 2 moves in the same direction as the first screen 1 and is also equipped with auger blades 3 on its inner side. Another part of the rice passes through the mesh holes on the second screen 2 again. At this point, the rice is divided into three grades.
[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.
Claims
1. A rice sieve for grading rice, characterized in that, include: The first screen (1) is a columnar mesh tube and is placed horizontally; The second screen (2) is fitted on the outside of the first screen (1), and there is a gap between the second screen (2) and the first screen (1). The aperture of the second screen (2) is smaller than that of the first screen (1). The jiaolong blade (3) is fixedly connected to the first screen (1) and the second screen (2). The inner edge of the jiaolong blade (3) penetrates the first screen (1) inward, and the outer edge of the jiaolong blade (3) abuts against the second screen (2) outward. Ungraded white rice is added to one end of the inner side of the first screen (1). The first screen (1), the second screen (2) and the dragon blade (3) rotate. The dragon blade (3) drives the white rice to move to the other end of the first screen (1). At the same time, the first screen (1) and the second screen (2) screen and grade the white rice.
2. The white rice sieve for rice grading according to claim 1, characterized in that, The second screen (2) is also fitted with an outer baffle (4), and there is a gap between the outer baffle (4) and the second screen (2). The outer edge of the dragon blade (3) abuts against the inside of the outer baffle (4), and one end of the outer baffle (4) is provided with a discharge port.
3. The white rice sieve for rice grading according to claim 2, characterized in that, The outer baffle (4) is fixedly connected to the dragon blade (3). The discharge port is a rectangular groove evenly opened on the cylindrical surface of the outer baffle (4). A collector (41) is fitted on the outer baffle (4). The collector (41) is a hollow ring on the inside. The lower end of the collector (41) is integrally formed with a discharge port. The collector (41) is fitted on the outer baffle (4) at the position of the discharge port.
4. The white rice sieve for rice grading according to claim 1, characterized in that, An inner baffle (5) is also provided between the first screen (1) and the second screen (2). One end of the inner baffle (5) is provided with a discharge port. There are gaps between the inner baffle (5) and the first screen (1) and the second screen (2). The inner baffle (5) divides the dragon blade (3) into two parts. The two parts of the dragon blade (3) rotate in opposite directions.
5. The rice sieve for rice grading according to claim 2 or 4, characterized in that, The auger blade (3) is divided into four parts. The four parts of the auger blade (3) are fixedly connected to the inner walls of the first screen (1), the second screen (2), the outer baffle (4), and the inner baffle (5), respectively. The auger blades (3) on the first screen (1) and the second screen (2) rotate in the same direction. The auger blades (3) on the outer baffle (4) and the inner baffle (5) rotate in the same direction. The auger blades (3) on the first screen (1), the second screen (2), the outer baffle (4), and the inner baffle (5) rotate in opposite directions.
6. The white rice sieve for rice grading according to claim 3, characterized in that, It also includes a third screen (6), which is sleeved on the outside of the second screen (2). There is a gap between the third screen (6) and the second screen (2). The aperture of the second screen (2) is smaller than that of the second screen (2). The outer edge of the dragon blade (3) penetrates the second screen (2) and abuts against the third screen (6).
7. The white rice sieve for rice grading according to claim 6, characterized in that, The outer baffle (4) has three discharge ports, which are respectively connected to the gaps between the first screen (1), the second screen (2), the outer baffle (4) and the third screen (6). Each discharge port is fitted with a collector (41).
8. The white rice sieve for rice grading according to claim 7, characterized in that, The three discharge ports on the outer baffle (4) are all located near both ends of the outer baffle (4).
9. The rice sieve for rice grading according to claim 1, characterized in that, It also includes a hair dryer (7), which is placed horizontally with its air outlet facing the end of the first screen (1) where the ungraded white rice is added.
10. The white rice sieve for rice grading according to claim 1, characterized in that, The first screen (1) and the second screen (2) have chamfered edges on the side of the mesh near the center.