Rice screening mechanism
By combining the motion of the lead screw, rotating shaft, and vibrating motor, the problem of insufficient tumbling in traditional rice screening equipment is solved, realizing all-round tumbling and agitation of rice, improving filtration efficiency and purity, and enhancing the screening effect of rice.
Patent Information
- Application Number
- CN202520428862.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-03-12
AI Technical Summary
Traditional rice sieving equipment cannot achieve full-range, continuous tumbling and stirring, resulting in insufficient exposure of debris and broken rice grains, low filtration efficiency, and easy clogging of the screen, which affects the purity of the rice.
The combined motion of the lead screw, lead screw slider, rotating shaft, rotating rod and rice turning rod, combined with the resonance of the vibrating motor and sliding block, realizes the all-round turning and stirring of rice, and efficiently filters out debris and broken rice grains through the screening filter screen.
It improves rice filtration efficiency, ensures rice purity, significantly speeds up the screening process, thoroughly removes debris, and enhances rice quality.
Smart Images
Figure CN223931925U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of rice screening technology, and in particular to a rice screening mechanism. Background Technology
[0002] In the rice processing industry, rice screening is one of the key steps in ensuring rice quality. However, traditional rice screening equipment has many problems in its structure and working principle, making it difficult to meet the screening quality and efficiency requirements of modern rice processing.
[0003] Traditional rice sieving equipment typically uses a single turning method. Some machines rely solely on simple stirring devices to turn the rice, making it difficult to achieve comprehensive and continuous turning and agitation. This makes it difficult for debris and broken rice grains inside the rice to be fully exposed and pass through the filter, resulting in low filtration efficiency. Moreover, due to insufficient turning, some rice may accumulate on the screen, causing filter blockage and further affecting the sieving effect, thus failing to effectively guarantee the purity of the rice.
[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Utility Model Content
[0005] To address the problem that some devices rely solely on simple stirring mechanisms to turn the rice, making it difficult to achieve comprehensive and continuous turning and stirring of the rice. This results in the rice grains and debris not being fully exposed and passing through the filter, leading to low filtration efficiency. This application provides a rice screening mechanism.
[0006] The rice screening mechanism provided in this application adopts the following technical solution:
[0007] A rice sieving mechanism includes a sieving box. A lead screw assembly is provided on one side of the top of the sieving box. The lead screw assembly includes a lead screw and a lead screw slider. A connecting frame is connected to the lead screw slider. A rotating shaft is rotatably provided inside the connecting frame. Several rotating rods are fixed at equal intervals along the circumference of the outer wall of the rotating shaft. Several rice turning rods are provided at the bottom of the rotating rods. A sieving filter screen is movably installed at the bottom of the rice turning rods. A vibration motor is installed at the center of the bottom end of the sieving filter screen.
[0008] Preferably, the bottom of the screening box is provided with a mounting frame, and a support arm is symmetrically fixed on one side of the mounting frame, and the screening box is rotatably connected to the support arm.
[0009] Preferably, a cylinder is installed on the other side of the bottom of the screening box, and both ends of the cylinder are rotatably connected to connectors. One of the connectors is fixed to the surface of the mounting frame, and the other connector is fixed to the bottom of the screening box.
[0010] Preferably, a discharge hopper is provided at the bottom of the outer wall on one side of the screening box, and support members for supporting the screw assembly are symmetrically welded to the top of the back wall of the screening box.
[0011] Preferably, a motor is installed on the outer wall of the support member, the output end of the motor penetrates the inner wall of the support member and is driven by a lead screw, and a second motor is installed at the middle of the top of the connecting frame, the output end of the second motor penetrates the inner wall of the connecting frame and is driven by a rotating shaft.
[0012] Preferably, the inner wall of the screening box is provided with a sliding groove at each corner, a sliding block is slidably installed inside the sliding groove, a spring for support is provided between the sliding block and the inner wall of the sliding groove, and the sliding block is fixed to the corner of the screening screen.
[0013] In summary, this application includes the following beneficial technical effects:
[0014] In terms of rice turning and filtering, this application utilizes the precise coordination between the lead screw, lead screw slider, connecting frame, rotating shaft, rotating rod, and rice turning rod to perform all-round and continuous turning and stirring of the rice on the surface of the screening filter screen. This efficiently promotes the removal of debris and broken rice grains from the rice through the filter screen, effectively ensuring the purity of the rice and improving the filtration efficiency.
[0015] To enhance the screening effect, the operation of the vibrating motor causes the screening filter to resonate. The movement of the sliding block within the chute and the compression of the spring work together to improve the screening process of rice on the screen surface. The high-frequency vibration generated by the resonance makes it easier for debris and broken rice grains to penetrate the filter, significantly accelerating the screening speed and allowing debris inside the rice to be discharged more thoroughly, further improving the quality of the rice. Attached Figure Description
[0016] Figure 1 This is a front view of a rice screening mechanism according to an embodiment of the application.
[0017] Figure 2 This is a schematic diagram of the screening box in the application embodiment.
[0018] Figure 3 This is an exploded view of the screening box in the application embodiment.
[0019] Explanation of reference numerals in the attached drawings: 1. Screening box; 2. Mounting frame; 3. Discharge hopper; 4. Support component; 5. Lead screw; 6. Cylinder; 7. Connecting component; 8. Lead screw slider; 9. Motor 1; 10. Connecting frame; 11. Motor 2; 12. Rotating shaft; 13. Rotating rod; 14. Rice turning rod; 15. Slide groove; 16. Spring; 17. Vibrating motor; 18. Screening filter screen; 19. Sliding block. Detailed Implementation
[0020] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.
[0021] This application discloses a rice sieving mechanism. (Refer to...) Figure 1 The system includes a screening box 1, with a mounting frame 2 at its bottom. Support arms are symmetrically fixed to one side of the mounting frame 2, and the screening box 1 is rotatably connected to the support arms. A cylinder 6 is mounted on the other side of the bottom of the screening box 1. Connecting parts 7 are rotatably connected to both ends of the cylinder 6. One connecting part 7 is fixed to the surface of the mounting frame 2, and the other connecting part 7 is fixed to the bottom of the screening box 1. A discharge hopper 3 is located at the bottom of one outer wall of the screening box 1, and a side door is hinged to the outer wall of the screening box 1 near the discharge hopper 3. By pushing one end of the bottom of the screening box 1 up and down with the cylinder 6, the other end of the screening box 1 rotates within the mounting frame 2, tilting the screening box 1 to facilitate the discharge of the screened material through the discharge hopper 3.
[0022] like Figures 2-3 As shown, a lead screw assembly is provided on one side of the top of the screening box 1. Support members 4, which support the lead screw assembly, are symmetrically welded to the top of the back wall of the screening box 1. The lead screw assembly includes a lead screw 5 and a lead screw slider 8. A connecting frame 10 is connected to the lead screw slider 8. A motor 9 drives the lead screw 5 to rotate within the support member 4, thereby causing the connecting frame 10 to reciprocate linearly along the lead screw 5 via the lead screw slider 8. A rotating shaft 12 is rotatably provided within the connecting frame 10. A motor 9 is installed on the outer wall of the support member 4. The output end of the motor 9 passes through the inner wall of the support member 4 and is driven by the lead screw 5. A second motor 11 is installed at the middle of the top of the connecting frame 10. The output end of the second motor 11 passes through the inner wall of the connecting frame 10 and is driven by the rotating shaft 12. Several rotating rods 13 are fixed equidistantly along the circumferential direction on the outer wall of the rotating shaft 12.
[0023] In this application, the bottom of the rotating rod 13 is provided with several rice-turning rods 14, and a sieving filter 18 is movably installed at the bottom of the rice-turning rods 14. The sieving filter 18 is designed to filter out whole grains smaller than rice grains, and is used to filter out impurities such as broken rice and bran. At the same time, the motor 11 drives the rotating shaft 12 to rotate, which in turn drives the rice-turning rods 14 to rotate via the rotating rod 13. This combined motion can continuously and comprehensively turn and agitate the rice on the surface of the sieving filter 18, effectively promoting the filtration of debris and broken rice grains inside the rice through the sieving filter 18, greatly improving filtration efficiency and ensuring the purity of the rice.
[0024] In this application, a vibrating motor 17 is installed at the bottom center of the screening filter 18. Slide grooves 15 are provided at the corners of the inner wall of the screening box 1. Sliding blocks 19 are slidably installed inside the slide grooves 15. Springs 16 for support are provided between the sliding blocks 19 and the inner wall of the slide grooves 15. The sliding blocks 19 are fixed to the corners of the screening filter 18. When the vibrating motor 17 operates, it causes the screening filter 18 to resonate. The sliding blocks 19 move within the slide grooves 15 and compress the springs 16, further promoting the screening process of rice on the surface of the screening filter 18. The high-frequency vibration generated by the resonance makes it easier for debris and broken rice grains to pass through the filter, accelerating the screening speed, improving the screening effect, and more thoroughly removing debris from inside the rice, thus ensuring the quality of the rice.
[0025] The implementation principle of a rice screening mechanism according to an embodiment of this application is as follows:
[0026] In operation, motor 9 drives the lead screw 5 to rotate within the support 4, causing the lead screw slider 8 to move the connecting frame 10 in a linear reciprocating motion along the lead screw 5. Simultaneously, motor 11 drives the rotating shaft 12 to rotate, which in turn drives the rice-turning rod 14 to rotate via the rotating rod 13. This flips and agitates the rice on the surface of the sieve screen 18, promoting the filtration of debris and broken rice grains. During this process, the vibrating motor 17 causes the sieve screen 18 to resonate, and the sliding block 19, working within the sliding groove 15, compresses the spring 16, further sieving the rice on the surface of the sieve screen 18 and quickly discharging debris, improving the processing efficiency. After sieving, cylinder 6 pushes one end of the sieve box 1 up and down, while the other end rotates within the mounting frame 2, tilting the sieve. This allows the processed debris to be discharged through the discharge hopper 3, and the side door can then be opened for easy discharge of the sieved rice.
[0027] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0028] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0029] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A rice sieving mechanism, comprising a sieving box (1), characterized in that: The top side of the screening box (1) is provided with a screw assembly, which includes a screw (5) and a screw slider (8). A connecting frame (10) is connected to the screw slider (8). A rotating shaft (12) is rotatably provided inside the connecting frame (10). Several rotating rods (13) are fixed at equal intervals along the circumference of the outer wall of the rotating shaft (12). Several rice turning rods (14) are provided at the bottom of the rotating rods (13). A screening filter screen (18) is movably installed at the bottom of the rice turning rods (14). A vibration motor (17) is installed at the middle of the bottom end of the screening filter screen (18).
2. The rice sieving mechanism according to claim 1, characterized in that: The bottom of the screening box (1) is provided with a mounting frame (2), and a support arm is symmetrically fixed on one side of the mounting frame (2). The screening box (1) is rotatably connected to the support arm.
3. The rice sieving mechanism according to claim 1, characterized in that: A cylinder (6) is installed on the other side of the bottom of the screening box (1). Both ends of the cylinder (6) are rotatably connected to connectors (7). One connector (7) is fixed to the surface of the mounting frame (2), and the other connector (7) is fixed to the bottom of the screening box (1).
4. The rice sieving mechanism according to claim 1, characterized in that: The screening box (1) has a discharge hopper (3) at the bottom of one side of the outer wall, and the top of the back wall of the screening box (1) is symmetrically welded with a support member (4) for supporting the screw assembly.
5. The rice sieving mechanism according to claim 4, characterized in that: The outer wall of the support member (4) is equipped with a motor (9), the output end of the motor (9) passes through the inner wall of the support member (4) and is driven by the lead screw (5). The middle of the top of the connecting frame (10) is equipped with a motor (11), the output end of the motor (11) passes through the inner wall of the connecting frame (10) and is driven by the rotating shaft (12).
6. The rice sieving mechanism according to claim 1, characterized in that: The inner wall of the screening box (1) is provided with a sliding groove (15) at each corner. A sliding block (19) is slidably installed inside the sliding groove (15). A spring (16) for support is provided between the sliding block (19) and the inner wall of the sliding groove (15). The sliding block (19) is fixed to the corner of the screening screen (18).