Screening device for rice processing

Abstract

The utility model relates to the technical field of rice processing equipment, and discloses a rice processing screening device which comprises a screening box, a plurality of screening frames are installed in the screening box, the diameters of filter holes of the multiple screening frames are sequentially decreased from top to bottom, a plurality of fixing frames are installed in the screening box, and the screening frames are inserted into the inner walls of the fixing frames. A plurality of fixing frames are installed on the outer wall of the screening box, locking mechanisms are installed on the outer walls of the fixing frames, connecting plates are fixedly connected to the outer walls of the middle sections of the fixing frames, and a vibrating mechanism is installed on the outer wall of the screening box and used for driving the fixing frames to synchronously vibrate in a reciprocating mode. And impurities of different sizes and unqualified rice grains can be more accurately separated from rice, the screening quality of the rice is effectively improved, and the purity of the rice is guaranteed.

Description

Technical Field

[0001] This application relates to the field of rice processing equipment technology, and in particular to a screening device for rice processing. Background Technology

[0002] Screening is a crucial step in rice processing. Its purpose is to separate impurities, broken rice, and immature grains from qualified rice to ensure the quality of the rice.

[0003] Some existing screening devices use only a single sieve for screening, which is not effective in screening impurities and unqualified rice grains of different sizes and shapes. This can easily result in some impurities remaining in qualified rice, affecting the purity of the rice. Therefore, a screening device for rice processing is proposed to solve the above problems. Utility Model Content

[0004] To address the problem that some existing screening devices use only a single sieve, which is ineffective at screening impurities and substandard rice grains of different sizes and shapes, and can easily leave some impurities in qualified rice, affecting the purity of the rice, this application provides a screening device for rice processing.

[0005] The rice processing screening device provided in this application adopts the following technical solution:

[0006] A screening device for rice processing includes a screening box, inside which multiple screening frames are installed, the diameter of the filter holes of the multiple screening frames decreasing sequentially from top to bottom. Inside the screening box, multiple fixing frames are installed, the screening frames are inserted into the inner wall of the fixing frames, and locking mechanisms are installed on the outer walls of the multiple fixing frames. Connecting plates are fixedly connected to the middle section of the outer wall of the multiple fixing frames. A vibration mechanism is installed on the outer wall of the screening box to drive the multiple fixing frames to reciprocate synchronously.

[0007] The vibration mechanism includes a fixed plate fixedly connected to the outer wall of the screening box. A servo motor is fixedly installed on the outer wall of the fixed plate. The output shaft of the servo motor passes through the fixed plate and is fixedly connected to a connecting rod one. A connecting rod is slidably connected to the inner wall of the screening box near the connecting plate. One end of the connecting rod is fixedly connected to the connecting plate. The end of the connecting rod away from the connecting plate passes through the screening box and is rotatably connected to a connecting rod two. The end of the connecting rod away from the connecting rod is rotatably connected to the connecting rod one.

[0008] Preferably, the locking mechanism includes two limiting cylinders fixedly connected to the top outer wall of the fixed frame. The inner wall of the limiting cylinder is also connected to a movable plate. The bottom outer wall of the movable plate is fixedly connected to a locking post. The outer wall of the screening frame located inside the fixed frame has multiple locking holes. The bottom end of the locking post penetrates the fixed frame and is adapted to be inserted into the locking hole.

[0009] Preferably, a movable rod is fixedly connected to the top outer wall of the movable plate, and the top ends of the two movable rods pass through the limiting cylinder and are fixedly connected to a handle. A return spring is sleeved on the outer wall of the movable rod inside the limiting cylinder.

[0010] Preferably, the outer walls of both sides of the screening box are provided with multiple sliding grooves, and the inner walls of the multiple sliding grooves are slidably connected with sliders, and every two sliders are fixedly connected to the outer walls of both sides of the fixing frame.

[0011] Preferably, the inner wall of the slide is equipped with two vibration springs, which are located at both ends of the slider. One end of the vibration spring is fixedly connected to the inner wall of the slide, and the other end is fixedly connected to the outer wall of the end of the slider.

[0012] Preferably, the top outer wall of the screening box is provided with a feed inlet, and the front outer wall of the screening box is hinged with a door.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] 1. By using multiple screening frames in conjunction with a vibration mechanism, multi-layer screening of rice is achieved, which can more accurately separate impurities and unqualified rice grains of different sizes from the rice, effectively improving the screening quality of rice and ensuring the purity of rice.

[0015] 2. The locking mechanism allows for easy and quick removal and installation of the screening frame from the fixed frame, making it convenient to clean the impurities clogging the screening frame or collect the screened rice. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of an embodiment of the application;

[0017] Figure 2 This is a three-dimensional schematic diagram of an embodiment of the application;

[0018] Figure 3 This is a first partial sectional view of an embodiment of the application;

[0019] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0020] Figure 5 This is a second partial sectional view of an embodiment of the application.

[0021] Explanation of reference numerals in the attached diagram: 1. Screening box; 2. Feed inlet; 3. Box door; 4. Screening frame; 5. Fixing frame; 6. Sliding block; 7. Slide groove; 8. Vibration spring; 9. Locking hole; 10. Limiting cylinder; 11. Movable plate; 12. Locking post; 13. Movable rod; 14. Handle; 15. Return spring; 16. Connecting rod; 17. Fixing plate; 18. Servo motor; 19. Connecting rod one; 20. Connecting rod two; 21. Connecting plate. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0023] This application discloses a screening device for rice processing. (Refer to...) Figure 1-5 A screening device for rice processing includes a screening box 1, with multiple screening frames 4 installed inside the screening box 1. The diameter of the filter holes of the multiple screening frames 4 decreases sequentially from top to bottom. Multiple fixing frames 5 are installed inside the screening box 1, and the screening frames 4 are inserted into the inner wall of the fixing frames 5. Locking mechanisms are installed on the outer walls of the multiple fixing frames 5. A connecting plate 21 is fixedly connected to the middle section of the outer wall of the multiple fixing frames 5. A vibration mechanism is installed on the outer wall of the screening box 1 to drive the multiple fixing frames 5 to reciprocate synchronously.

[0024] The vibration mechanism includes a fixed plate 17 fixedly connected to the outer wall of the screening box 1. A servo motor 18 is fixedly installed on the outer wall of the fixed plate 17. The output shaft of the servo motor 18 passes through the fixed plate 17 and is fixedly connected to a connecting rod 19. A connecting rod 16 is slidably connected to the inner wall of the screening box 1 near the connecting plate 21. One end of the connecting rod 16 is fixedly connected to the connecting plate 21. The end of the connecting rod 16 away from the connecting plate 21 passes through the screening box 1 and is rotatably connected to a connecting rod 20. The end of the connecting rod 20 away from the connecting rod 16 is rotatably connected to the connecting rod 19.

[0025] The locking mechanism includes two limiting cylinders 10 fixedly connected to the top outer wall of the fixed frame 5. The inner wall of the limiting cylinder 10 is also connected to a movable plate 11. The bottom outer wall of the movable plate 11 is fixedly connected to a locking post 12. The outer wall of the screening frame 4 located inside the fixed frame 5 has multiple locking holes 9. The bottom end of the locking post 12 passes through the fixed frame 5 and is adapted to the locking holes 9 for insertion.

[0026] Movable rods 13 are fixedly connected to the top outer wall of the movable plate 11. The top ends of the two movable rods 13 pass through the limiting cylinder 10 and are fixedly connected to handles 14. A return spring 15 is sleeved on the outer wall of the movable rods 13 inside the limiting cylinder 10.

[0027] Multiple grooves 7 are provided on the outer walls of both sides of the screening box 1. Sliding blocks 6 are slidably connected to the inner walls of the multiple grooves 7. Every two sliding blocks 6 are fixedly connected to the outer walls of both sides of the fixing frame 5.

[0028] Two vibration springs 8 are installed on the inner wall of the slide groove 7. The two vibration springs 8 are located at both ends of the slider 6. One end of the vibration spring 8 is fixedly connected to the inner wall of the slide groove 7, and the other end is fixedly connected to the outer wall of the end of the slider 6.

[0029] The top outer wall of the screening box 1 is provided with a feed inlet 2, and the front outer wall of the screening box 1 is hinged with a door 3.

[0030] The implementation principle of a rice processing screening device according to an embodiment of this application is as follows: When in use, rice is added into the screening box 1 through the feed inlet 2. The rice falls into the upper screening frame 4. The servo motor 18 is started. The output shaft of the servo motor 18 drives the connecting rod 19 to rotate. When the connecting rod 19 rotates around the output shaft of the servo motor 18, it drives the connecting rod 20 to push or pull the connecting rod 16 to slide. The connecting rod 16 then drives multiple fixed frames 5 to move back and forth through the connecting plate 21. The screening frame 4 in the fixed frame 5 vibrates. Under the action of gravity, larger particles of impurities such as stones and rice husks are retained in the uppermost screening frame 4. The rice that has been screened by the upper screening frame 4 continues to fall on the middle screening frame 4. At this time, the plump rice particles will remain in the middle screening frame 4, while smaller particles of impurities such as some broken rice and smaller rice particles fall through the sieve holes of the middle screening frame 4 and finally fall into the lower screening frame 4.

[0031] After being filtered by the upper and middle screening boxes 4, the rice falls onto the lower screening box 4 for final screening. Smaller impurities, such as some broken rice, are screened out through the lower screening box 4, while smaller rice particles are retained in the lower screening box 4, thus achieving multiple screenings.

[0032] After screening, open the box door 3 and pull the handle 14 upward to move the two movable rods 13 upward. The two movable rods 13 will then move the locking post 12 out of the locking hole 9 through the movable plate 11, releasing the lock on the screening frame 4. The screening frame 4 can then be pulled out from the fixed frame 5 to clean impurities or collect rice.

[0033] After cleaning or collection, similarly pull the handle 14 upwards to raise the locking post 12. The locking post 12 no longer obstructs the insertion of the screening frame 4 into the fixed frame 5. During this process, the movable plate 11 rises and presses the return spring 15. The return spring 15 deforms and generates elastic force, inserting the screening frame 4 into the fixed frame 5 until the screening frame 4 is fully inserted. The two locking holes 9 on the outer wall of the screening frame 4 are then aligned with the two locking posts 12. Release the handle 14, and the movable plate 11 will reset under the elastic force of the return spring 15. The movable plate 11 drives the locking post 12 to move down and insert into the locking hole 9, locking the screening frame 4 in the fixed frame 5, completing the installation of the screening frame 4 for subsequent screening operations.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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 screening device for rice processing, comprising a screening box (1), characterized in that: The screening box (1) is equipped with multiple screening frames (4) inside. The diameter of the filter holes of the multiple screening frames (4) decreases from top to bottom. The screening box (1) is equipped with multiple fixing frames (5) inside. The screening frames (4) are inserted into the inner wall of the fixing frames (5). The outer walls of the multiple fixing frames (5) are equipped with locking mechanisms. The middle section of the outer wall of the multiple fixing frames (5) is fixedly connected with a connecting plate (21). The outer wall of the screening box (1) is equipped with a vibration mechanism to drive the multiple fixing frames (5) to reciprocate synchronously. The vibration mechanism includes a fixed plate (17) fixedly connected to the outer wall of the screening box (1). A servo motor (18) is fixedly installed on the outer wall of the fixed plate (17). The output shaft of the servo motor (18) passes through the fixed plate (17) and is fixedly connected to a connecting rod (19). A connecting rod (16) is slidably connected to the inner wall of the screening box (1) near the connecting plate (21). One end of the connecting rod (16) is fixedly connected to the connecting plate (21). The end of the connecting rod (16) away from the connecting plate (21) passes through the screening box (1) and is rotatably connected to a connecting rod (20). The end of the connecting rod (20) away from the connecting rod (16) is rotatably connected to the connecting rod (19).

2. The screening device for rice processing according to claim 1, characterized in that: The locking mechanism includes two limiting cylinders (10) fixedly connected to the top outer wall of the fixed frame (5). The inner wall of the limiting cylinder (10) is also connected to a movable plate (11). The bottom outer wall of the movable plate (11) is fixedly connected to a locking post (12). The outer wall of the screening frame (4) located inside the fixed frame (5) has multiple locking holes (9). The bottom end of the locking post (12) penetrates the fixed frame (5) and is adapted to be inserted into the locking hole (9).

3. The screening device for rice processing according to claim 2, characterized in that: The top outer wall of the movable plate (11) is fixedly connected with a movable rod (13). The top ends of the two movable rods (13) pass through the limiting cylinder (10) and are fixedly connected with handles (14). The outer wall of the movable rod (13) inside the limiting cylinder (10) is fitted with a return spring (15).

4. The screening device for rice processing according to claim 1, characterized in that: The screening box (1) has multiple grooves (7) on both sides of its outer wall. The inner walls of the multiple grooves (7) are slidably connected to sliders (6). Every two sliders (6) are fixedly connected to the outer walls of the fixing frame (5).

5. A screening device for rice processing according to claim 4, characterized in that: Two vibration springs (8) are installed on the inner wall of the slide (7). The two vibration springs (8) are located at both ends of the slider (6). One end of the vibration spring (8) is fixedly connected to the inner wall of the slide (7), and the other end is fixedly connected to the outer wall of the end of the slider (6).

6. The screening device for rice processing according to claim 1, characterized in that: The top outer wall of the screening box (1) is provided with a feed inlet (2), and the front outer wall of the screening box (1) is hinged with a box door (3).

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