A chaff separating device

Abstract

The utility model relates to the field of paddy separation, disclose a kind of paddy separation device, comprising: gravity screen, gravity screen side is fixedly provided with paddy separation knapsack, and separation mechanism is provided on the paddy separation knapsack;The separation mechanism includes cylinder bracket, screw one, fixed nut one, cylinder, plugboard, screw two, pressure spring and fixed nut two;Screw one is fixedly installed in the side of paddy separation knapsack, and screw two is fixedly installed in the bottom of paddy separation knapsack, and fixed nut one is fixed to cylinder bracket by thread connection with screw one, and fixed nut two is abutted to pressure spring by thread connection with screw two, and pressure spring is abutted to plugboard, and cylinder is fixedly installed on cylinder bracket by bolt.The utility model has the following advantages and effects: it can avoid the problem of leaving seam and leaking rice, and the cylinder is convenient to disassemble and assemble, and is convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of rice-brown separation technology, and in particular to a rice-brown separation device. Background Technology

[0002] In the grain processing industry, paddy rice separation is the core step in processing paddy rice into polished rice. Its purpose is to accurately separate the mixture of paddy rice and unhulled paddy rice (containing brown rice, unhulled paddy rice, and a small amount of husk) after the initial hulling by the rice huller, so as to ensure that the subsequent rice milling process only processes pure brown rice, thereby improving the quality of polished rice and processing efficiency.

[0003] The existing equipment has an unreasonable outlet control and sealing structure design, which easily leads to material waste and maintenance difficulties. Most equipment uses a manual gate to control the opening and closing of the brown rice outlet. Manual operation is not only difficult to control the outlet opening accurately, but also the opening is too large, which can cause the material flow rate to be too fast and affect subsequent collection. If the opening is too small, it can cause outlet blockage. In addition, the seal between the gate and the outlet depends on manual adjustment, and after long-term use, it is easy to have gaps and rice leakage due to wear. Although some equipment uses pneumatic control of the outlet, the connection between the cylinder and the support is a welded or integrated structure. When the cylinder fails and needs to be repaired or replaced, the entire separation mechanism must be disassembled, which is complicated and has a long downtime, affecting the continuous operation of the processing line. Therefore, it is necessary to design a rice-brown rice separation device to solve the above problems.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a grain-rice separation device to solve the above-mentioned problems.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a rice-straw separation device, comprising:

[0007] A gravity screen, wherein a paddy separation backpack is fixedly installed on the side of the gravity screen, and a separation mechanism is installed on the paddy separation backpack;

[0008] The separation mechanism includes a cylinder bracket, screw one, fixing nut one, cylinder, insert plate, screw two, pressure spring and fixing nut two;

[0009] The first screw is fixedly installed on the side of the coarse grain separating backpack, the second screw is fixedly installed on the bottom of the coarse grain separating backpack, the first fixing nut is fixed to the cylinder bracket by threaded connection with the first screw, the second fixing nut is abutted against the pressure spring by threaded connection with the second screw, the pressure spring abuts against the insert plate, the cylinder is fixedly installed on the cylinder bracket by bolts, and the cylinder output end is fixedly connected to the insert plate by bolts.

[0010] A further feature of this invention is that the separation mechanism includes a brown rice outlet, a sieve return port, a hull return port, a diverting slider, and a clamping screw. The brown rice outlet, sieve return port, and hull return port are all located on the brown rice separation backpack. The insert plate is slidably installed on the brown rice outlet. The diverting slider is slidably installed inside the brown rice separation backpack. The clamping screw is threadedly connected to the diverting slider and abuts against the outer side of the brown rice separation backpack.

[0011] A further feature of this invention is that the pressure spring is sleeved on the outside of the screw rod.

[0012] By adopting the above technical solution, the position of the pressure spring is defined.

[0013] A further feature of this invention is that the bottom of the insert plate has two through holes, and the bottom of the screw rod passes through the through holes.

[0014] A further feature of this invention is that a clearance hole is provided at the bottom of the cylinder bracket, through which the screw and the pressure spring pass.

[0015] By adopting the above technical solution, the movement of the insert plate is not affected.

[0016] A further feature of this invention is that the brown rice outlet and the return sieve are located at the bottom of the rice-brown rice separation backpack.

[0017] By adopting the above technical solution, the positions of the brown rice outlet and the return sieve are defined.

[0018] A further feature of this invention is that the hulling port is located on the side of the rice-separating backpack.

[0019] A further feature of this invention is that the grain separation backpack has a perforation hole, through which a tightening screw passes.

[0020] The beneficial effects of this utility model are:

[0021] This invention features a separation mechanism with a rigid connection between the cylinder output end and the insert plate. By controlling the cylinder's extension and retraction, the movement distance of the insert plate is precisely adjusted, thereby controlling the opening of the brown rice outlet. This avoids both excessive opening leading to excessively fast material flow and subsequent collection difficulties, and insufficient opening causing outlet blockage. It adapts to different brown rice discharge requirements. Simultaneously, a pressure spring sleeved on the outside of the screw continuously applies an upward elastic force to the insert plate, ensuring a tight fit between the insert plate and the bottom inner wall of the brown rice separation backpack. This completely solves the problem of rice leakage caused by wear in traditional gates, reducing material loss per batch and improving grain utilization. Furthermore, when the cylinder malfunctions, there is no need to disassemble the entire separation mechanism; simply unscrewing the fixing bolts allows the cylinder to be removed for repair or replacement, making the operation simple and time-saving. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a grain-rice separation device proposed in this utility model.

[0024] Figure 2 This is a schematic diagram of the structure of the insert plate of the rice and husk separation backpack part in the rice and husk separation device proposed in this utility model when it is closed.

[0025] Figure 3 This is a schematic diagram of the structure of the insert plate of the rice and husk separation backpack part in the rice and husk separation device proposed in this utility model when it is opened.

[0026] Figure 4 This is a partially exploded cross-sectional view of the rice-separation backpack section in a rice-separation device proposed in this utility model.

[0027] Figure 5 This is a partial cross-sectional view of the rice-coarse separation backpack section in a rice-coarse separation device proposed in this utility model.

[0028] In the diagram: 1. Gravity sieve; 2. Rice-brown rice separation backpack; 3. Brown rice outlet; 4. Return sieve inlet; 5. Return hulling inlet; 6. Cylinder bracket; 7. Screw 1; 8. Fixing nut 1; 9. Cylinder; 10. Insert plate; 11. Screw 2; 12. Pressure spring; 13. Fixing nut 2; 14. Perforation; 15. Clearance hole; 16. Hole; 17. Diverting slider; 18. Clamping screw. Detailed Implementation

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" 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; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0030] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0031] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This utility model provides a rice bran separation device, comprising:

[0032] Gravity screen 1, a rice and husk separation backpack 2 is fixedly installed on the side of gravity screen 1, and a separation mechanism is installed on the rice and husk separation backpack 2;

[0033] The separation mechanism includes a cylinder bracket 6, a screw 1 7, a fixing nut 1 8, a cylinder 9, a slide plate 10, a screw 2 11, a pressure spring 12, and a fixing nut 2 13;

[0034] Screw 1 7 is fixedly installed on the side of the coarse grain separating backpack 2, screw 2 11 is fixedly installed on the bottom of the coarse grain separating backpack 2, fixing nut 1 8 is fixed to the cylinder bracket 6 by threaded connection with screw 1 7, fixing nut 2 13 is threaded connection with screw 2 11 to abut against the pressure spring 12, the pressure spring 12 abuts against the insert plate 10, the cylinder 9 is fixedly installed on the cylinder bracket 6 by bolts, and the output end of the cylinder 9 is fixedly connected to the insert plate 10 by bolts.

[0035] With the above structure, the cylinder bracket 6 is fixed to the rice-separation backpack 2 by the cooperation of screw 7 and fixing nut 8, and the cylinder 9 is fixed to the cylinder bracket 6 by bolts. This facilitates the disassembly, assembly and maintenance of the cylinder 9. Moreover, by the cooperation of screw 11, pressure spring 12 and fixing nut 13, a certain pressure can be applied to the insert plate 10, so that the insert plate 10 is always in contact with the bottom of the rice-separation backpack 2, preventing gaps and rice leakage. Activating the cylinder 9 can move the insert plate 10, thereby opening or closing the brown rice outlet 3. The cylinder 9 is controlled by an external PLC controller. By setting the program in advance, the movement distance of the insert plate 10 can be accurately controlled.

[0036] Specifically, the separation mechanism also includes a brown rice outlet 3, a sieve return port 4, a hull return port 5, a diverting slider 17, and a clamping screw 18. The brown rice outlet 3, the sieve return port 4, and the hull return port 5 are all located on the brown rice separation backpack 2. The insert plate 10 is slidably installed on the brown rice outlet 3. The diverting slider 17 is slidably installed inside the brown rice separation backpack 2. The clamping screw 18 is threadedly connected to the diverting slider 17 and abuts against the outer side of the brown rice separation backpack 2.

[0037] Through the above structure, the material after initial hulling by the rice huller will move along the directions of the three arrows shown in the diagram. Brown rice, with a higher specific gravity, moves along the left arrow, while paddy husks, with a lower specific gravity, move along the right arrow. The middle arrow is the dividing line, indicating that brown rice and paddy are not completely separated. Due to the operation of the gravity screen, a clear dividing line will appear on the surface of the mixture. The position of the dividing line will change according to the ratio of brown rice to paddy. The diverting slider 17 is used to adjust the brown rice to a suitable position. The rice flows separately from the paddy rice. Brown rice enters the rice mill through the brown rice outlet 3 for fine grinding. The incompletely separated material enters the return screen 4 and is then lifted by the elevator to enter the gravity screen 1 for screening. The husks and paddy rice enter the return hulling inlet 5 and enter the rice hulling machine for further hulling and separation. Moreover, the rice-brown rice separation backpack 2 is connected to the return hulling flap by a damping rotation. The return hulling flap is located between the return screen 4 and the return hulling inlet 5. By rotating the return hulling flap to the designated position, the return screen 4 or the return hulling inlet 5 can be closed, keeping the return screen 4 or the return hulling inlet 5 in an open state.

[0038] Specifically, the pressure spring 12 is sleeved on the outside of the screw 11, and the bottom of the insert plate 10 has two through holes 14. The bottom of the screw 11 passes through the through holes 14, and the bottom of the cylinder bracket 6 has a clearance hole 15. The screw 11 and the pressure spring 12 pass through the clearance hole 15. It should be noted that this does not affect the normal movement of the insert plate 10.

[0039] Specifically, the brown rice outlet 3 and the return sieve 4 are located at the bottom of the rice-brown rice separation backpack 2, and the return hulling outlet 5 is located on the side of the rice-brown rice separation backpack 2. It should be noted that the positions of the brown rice outlet 3, the return sieve 4, and the return hulling outlet 5 are limited.

[0040] Specifically, the grain-separation backpack 2 has a face 16, and a clamping screw 18 passes through the face 16. It should be noted that the clamping screw 18 can move laterally.

[0041] Working principle:

[0042] S1: The mixture of rice and paddy after initial hulling by the rice huller is first conveyed to gravity screen 1. Gravity screen 1 achieves initial stratification by combining high-frequency vibration and the inclined screen surface, utilizing the difference in specific gravity between brown rice and paddy: During vibration, brown rice, due to its higher specific gravity, sinks to the bottom of the screen surface and moves to the left along the inclined direction of the screen surface; unhulled paddy and husks, due to their lower specific gravity, move to the right above the screen surface; and a clear dividing line is formed in the middle of the screen surface between the two. The position of this dividing line will be dynamically adjusted according to the change in the ratio of brown rice to paddy in the material. The material after initial stratification will enter the rice-paddy separation backpack 2 connected to the side of gravity screen 1 in three directions: brown rice on the left, paddy and husks on the right, and the mixture in the middle, which correspond to the three material channels inside the rice-paddy separation backpack 2 respectively.

[0043] S2: To ensure that different types of materials accurately enter the corresponding outlets, the separation limit needs to be adjusted by the diversion slider 17. The diversion slider 17 is pushed to move laterally along the material flow direction to adjust the position of the diversion slider 17. Then, the position of the diversion slider 17 is locked by rotating the clamping screw 18. The pressure spring 12 sleeved on the outside of the screw 11 applies an upward elastic force to the insert plate 10 under the clamping action of the fixing nut 13, so that the insert plate 10 fits tightly against the bottom inner wall of the rice separation backpack 2 to prevent rice leakage.

[0044] S3: When brown rice needs to be discharged, the cylinder 9 fixed on the cylinder bracket 6 is activated. The cylinder bracket 6 is fixed to the side of the rice-brown rice separation backpack 2 by the threaded connection between the screw 7 and the fixing nut 8. It is easy to disassemble and assemble and the position is stable. The output end of the cylinder 9 is fixedly connected to the insert plate 10 by bolts. When the cylinder 9 extends, it will drive the insert plate 10 to move. At this time, the brown rice outlet 3 opens and the brown rice is discharged smoothly. When the discharge stops, the cylinder 9 retracts and reseals the brown rice outlet 3.

[0045] The above provides a detailed description of the rice-coarse grain separating device provided by this utility model. Specific embodiments have been used to illustrate the principle and implementation of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A rice-straw separation device, characterized in that, include: Gravity screen (1), a grain separation backpack (2) is fixedly installed on the side of the gravity screen (1), and a separation mechanism is installed on the grain separation backpack (2); The separation mechanism includes a cylinder bracket (6), a screw (7), a fixing nut (8), a cylinder (9), a insert plate (10), a screw (11), a pressure spring (12), and a fixing nut (13); The first screw (7) is fixedly installed on the side of the coarse grain separating backpack (2), the second screw (11) is fixedly installed on the bottom of the coarse grain separating backpack (2), the first fixing nut (8) is fixed to the cylinder bracket (6) by threaded connection with the first screw (7), the second fixing nut (13) is connected to the pressure spring (12) by threaded connection with the second screw (11), the pressure spring (12) is in contact with the insert plate (10), the cylinder (9) is fixedly installed on the cylinder bracket (6) by bolts, and the output end of the cylinder (9) is fixedly connected to the insert plate (10) by bolts.

2. The rice-brown rice separation device according to claim 1, characterized in that, The separation mechanism also includes a brown rice outlet (3), a sieve return port (4), a hull return port (5), a diverting slider (17), and a clamping screw (18). The brown rice outlet (3), the sieve return port (4), and the hull return port (5) are all located on the rice-brown rice separation backpack (2). The insert plate (10) is slidably installed on the brown rice outlet (3). The diverting slider (17) is slidably installed inside the rice-brown rice separation backpack (2). The clamping screw (18) is threadedly connected to the diverting slider (17). The clamping screw (18) abuts against the outside of the rice-brown rice separation backpack (2).

3. The rice-brown rice separation device according to claim 1, characterized in that, The pressure spring (12) is sleeved on the outside of the screw (11).

4. The rice-straw separation device according to claim 1, characterized in that, The bottom of the insert plate (10) has two through holes (14), and the bottom of the screw (11) passes through the through holes (14).

5. The rice-straw separation device according to claim 1, characterized in that, The cylinder bracket (6) has a clearance hole (15) at the bottom, through which the screw (11) and the pressure spring (12) pass.

6. The rice-straw separation device according to claim 2, characterized in that, The brown rice outlet (3) and the return sieve (4) are located at the bottom of the rice-brown rice separation backpack (2).

7. A rice-straw separation device according to claim 2, characterized in that, The hulling port (5) is located on the side of the rice-separating backpack (2).

8. A rice-strawberry separation device according to claim 2, characterized in that, The grain separation backpack (2) has a face (16) and a clamping screw (18) passes through the face (16).

Images