Combined multi-layer rice stoning machine
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHISHOU QIAOQIAO RICE IND CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-26
AI Technical Summary
Existing rice destoners are not effective at removing small, lightweight impurities such as stones, causing the impurities to be blown out along with the rice, thus affecting the destone removal effect.
The combined multi-layer rice destoner uses a combination design of the second and first screens, along with a motor, turntable, push-pull rod, and other mechanisms, to achieve secondary screening of rice, removing both larger and smaller impurities. The telescopic mechanism facilitates the cleaning of these impurities.
It improves the screening efficiency of rice destone removal, effectively removes both large and small impurities from rice, and facilitates the collection and cleaning of impurities.
Smart Images

Figure CN224405688U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of rice processing technology, and in particular to a combined multi-layer rice destoner. Background Technology
[0002] Rice, also known as paddy rice, is a food made from paddy rice through processes such as cleaning, hulling, milling, and finishing. Rice is a staple food for people in most parts of China, and rice processing mainly involves processing paddy rice with its husk into grains that can be cooked directly.
[0003] A search revealed that utility model patent CN219785621U discloses a "rice destoner". This rice destoner utilizes baffles and a conveyor belt in its conveying components to facilitate the transport of rice falling from the hopper into the machine housing. The rice is also guided and spread out by the distribution plates and gaps on both sides of the baffles, and evenly spread on the conveyor belt through the gaps, preventing accumulation during fall and ensuring complete dispersion by the blowing components. The blowing components, including a fan, duct, air box, and air outlet, expand the blowing area to approximately equal the width of the falling rice, facilitating even dispersion. A sieve plate, connecting plate, and vibrating motor facilitate secondary screening of the rice, removing large, lightweight impurities. A winch, traction rope, and tilting plate release accumulated lightweight impurities through a guide hopper and discharge port. The screened rice is then discharged from the machine housing via a guide plate.
[0004] When this device is in use, small and light impurities such as stones in the rice are blown onto the sieve plate along with the rice, and then fall into the upper part of the guide plate and exit the machine box along with the rice, resulting in poor stone removal effect.
[0005] Therefore, we propose a combined multi-layer rice destoner to solve the above problems. Utility Model Content
[0006] The purpose of this application is to provide a combined multi-layer rice destoner that can remove stones smaller than the volume and mass of rice grains.
[0007] The above-mentioned technical objective of this application is achieved through the following technical solution: a combined multi-layer rice destoning machine, comprising a base, a first upright plate fixedly connected to the upper end of the base, and four sets of the first upright plates are provided. A guide rod is fixedly connected between two corresponding sets of the first upright plates. A first connecting plate is slidably connected to the periphery of the guide rod. A movable plate is fixedly connected to the upper end of the first connecting plate. A push-pull mechanism is provided at the upper end of the base. A second upright plate is fixedly connected to the upper end of the movable plate, and two sets of the second upright plates are provided. A connecting rod is rotatably connected to the upper end of the second upright plate. A second connecting plate is fixedly connected to both ends of the connecting rod. A bottom frame is fixedly connected to the upper end of the second connecting plate. A first support rod is fixedly connected to the upper end of the bottom frame. A first screen is fixedly connected to the upper end of the first support rod. A baffle is fixedly connected inside the first screen. A second support rod is fixedly connected to the upper end of the first screen. A second screen is fixedly connected to the upper end of the second support rod. A rotating plate is rotatably connected to the front of the second screen. Rotating rods are fixedly connected to both sides of the rotating plate. The rotating plate is rotatably connected to the second screen through the rotating rods.
[0008] By adopting the above technical solution, rice can be screened twice. The second screen can screen out impurities that are larger than rice grains, while the first screen can screen out rice and impurities that are smaller than rice grains.
[0009] A further feature of this application is that the push-pull mechanism includes a motor fixedly connected to the upper end of the base, and a turntable fixedly connected to the output end of the motor.
[0010] By adopting the above technical solution, the motor can easily drive the turntable to rotate, and the rotation of the turntable can easily push and pull the push-pull rod.
[0011] A further feature of this application is that the push-pull mechanism further includes a push-pull rod rotatably connected to the front of the turntable, and includes a positioning block fixedly connected to the upper end of the base.
[0012] By adopting the above technical solution, the positioning block can easily limit the sliding rod, thereby enabling the sliding rod to slide stably left and right.
[0013] A further feature of this application is that the push-pull mechanism further includes a slide rod slidably connected to the positioning block, including a first connecting block fixedly connected to the left end of the slide rod, and the push-pull rod is rotatably connected to the first connecting block.
[0014] By adopting the above technical solution, the rotation of the turntable facilitates the push-pull rod to pull the first connecting block, thereby facilitating the push-pull of the slide rod.
[0015] A further feature of this application is that the push-pull mechanism further includes a second connecting block fixedly connected to the bottom of the movable plate, and the second connecting block is fixedly connected to the slide rod.
[0016] By adopting the above technical solution, the slide bar drives the second connecting block to move left and right, and the movable plate moves synchronously with the second connecting block, which can realize the left and right movement of the movable plate, thereby enabling the second screen and the first screen to move left and right, which is beneficial for rice screening.
[0017] A further feature of this application is that: a telescopic mechanism is provided on the left side of the second screen, a support leg is fixedly connected to the bottom of the base, a second telescopic cylinder is rotatably connected to the upper end of the movable plate, and the output end of the second telescopic cylinder is fixedly connected to the bottom frame.
[0018] By adopting the above technical solution, the extension and retraction of the second telescopic cylinder can drive the left end of the bottom frame to rise and fall, thereby adjusting the angle between the bottom frame and the movable plate.
[0019] A further provision of this application is that the telescopic mechanism includes a positioning rod fixedly connected to the left end of the second screen, and a rotating block rotatably connected to the periphery of the positioning rod.
[0020] By adopting the above technical solution, the positioning rod and rotating block can facilitate the installation and rotation of the first telescopic cylinder.
[0021] A further provision of this application is that the telescopic mechanism further includes a first telescopic cylinder fixedly connected to the front of the rotating block, and a third connecting block fixedly connected to the output end of the first telescopic cylinder.
[0022] By adopting the above technical solution, the third connecting block can facilitate the lever to be driven when the first telescopic cylinder extends or retracts.
[0023] A further feature of this application is that the telescopic mechanism further includes a lever rotatably connected to the third connecting block, and includes a connecting piece fixedly connected to the front side of the rotating plate, the connecting piece being fixedly connected to the lever.
[0024] By adopting the above technical solution, it is easy to drive the rotating plate to rotate through the lever and connecting plate.
[0025] A further configuration of this application is: a first receiving box is fixedly connected to the upper end of the base, and a second receiving box is fixedly connected to the upper end of the base.
[0026] By adopting the above technical solution, it is convenient to collect the filtered rice and impurities.
[0027] This application includes at least one of the following beneficial technical effects:
[0028] 1. This application can remove larger and smaller impurities from rice using the second screen and the first screen. At the same time, the push-pull mechanism, which consists of a motor, turntable, push-pull rod, positioning block, slide rod, first connecting block and second connecting block, can improve the screening and removal effect in conjunction with the second screen and the first screen.
[0029] 2. This application utilizes a telescopic mechanism consisting of a positioning rod, a rotating block, a first telescopic cylinder, a third connecting block, a lever, and a connecting piece to open the rotating plate. The same mechanism and working principle can open the plate on the front of the bottom frame. At the same time, the output end of the second telescopic cylinder can extend to lift the rear end of the second screen upward, thereby facilitating the cleaning of impurities inside the second screen and the bottom frame into the second receiving box. Attached Figure Description
[0030] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0031] Figure 1 This is a three-dimensional structural diagram of this embodiment.
[0032] Figure 2 yes Figure 1 A schematic diagram of the structure of the first screen in the middle.
[0033] Figure 3 yes Figure 1 A schematic diagram of the push-pull mechanism.
[0034] Figure 4 yes Figure 1 A schematic diagram of the telescopic mechanism.
[0035] Figure 5 yes Figure 1 A magnified structural diagram of part A in the middle.
[0036] In the diagram, 1. Base; 2. First upright plate; 3. Guide rod; 4. First connecting plate; 5. Movable plate; 6. Push-pull mechanism; 61. Motor; 62. Turntable; 63. Push-pull rod; 64. Positioning block; 65. Slide rod; 66. First connecting block; 67. Second connecting block; 7. Second upright plate; 8. Connecting rod; 9. Second connecting plate; 10. Base frame; 11. First support rod; 12. First screen; 13. Stop bar; 14. Second support rod; 15. Second screen; 16. Rotating plate; 17. Rotating rod; 18. Telescopic mechanism; 181. Positioning rod; 182. Rotating block; 183. First telescopic cylinder; 184. Third connecting block; 185. Lever; 186. Connecting piece; 19. Support leg; 20. Second telescopic cylinder; 21. First receiving box; 22. Second receiving box. Detailed Implementation
[0037] The technical solution of this application will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0038] See Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 This application provides a combined multi-layer rice destoning machine, including a base 1. A first upright plate 2 is fixedly connected to the upper end of the base 1, and four sets of the first upright plates 2 are provided. A guide rod 3 is fixedly connected between two corresponding sets of the first upright plates 2. A first connecting plate 4 is slidably connected to the side of the guide rod 3, and two sets of the first connecting plate 4 are provided on the side of the guide rod 3. A movable plate 5 is fixedly connected to the upper end of the first connecting plate 4. A push-pull mechanism 6 is provided on the upper end of the base 1. A second upright plate 7 is fixedly connected to the upper end of the movable plate 5, and two sets of the second upright plates 7 are provided. A connecting rod 8 is rotatably connected to the upper end of the second upright plate 7. A slot matching the connecting rod 8 is provided through the left side of the second upright plate 7 for the connecting rod 8 to rotate. Second connecting plates 9 are fixedly connected to both ends of the connecting rod 8. A bottom frame 10 is fixedly connected to the upper end of the second connecting plate 9. A first support rod 11 is fixedly connected to the upper end of the frame 10. A first screen 12 is fixedly connected to the upper end of the first support rod 11. A baffle 13 is fixedly connected inside the first screen 12. The baffle 13 is fixedly connected to the left and right sides of the inner wall of the first screen 12, and the bottom surface of the baffle 13 is in contact with the bottom surface of the first screen 12. The thickness of the baffle 13 is 1.5mm, which is thick enough to block small pebbles like rice grains without obstructing them. The vertical axis of the baffle 13 does not exceed the rear end of the bottom frame 10. A second support rod 14 is fixedly connected to the upper end of the first screen 12. A second screen 15 is fixedly connected to the upper end of the second support rod 14. A rotating plate 16 is rotatably connected to the front of the second screen 15. Rotating rods 17 are fixedly connected to both the left and right sides of the rotating plate 16. The rotating plate 16 is rotatably connected to the second screen 15 through the rotating rods 17.
[0039] The push-pull mechanism 6 includes a motor 61 fixedly connected to the upper end of the base 1, and a turntable 62 fixedly connected to the output end of the motor 61.
[0040] The push-pull mechanism 6 also includes a push-pull rod 63 rotatably connected to the front of the turntable 62, including a positioning block 64 fixedly connected to the upper end of the base 1. A protruding rod matching the push-pull rod 63 is fixedly connected to the front of the turntable 62, and can be rotatably connected to the push-pull rod 63 through the rod.
[0041] The push-pull mechanism 6 also includes a slide rod 65 that is slidably connected to the positioning block 64, and a first connecting block 66 that is fixedly connected to the left end of the slide rod 65. The push-pull rod 63 is rotatably connected to the first connecting block 66. A protruding rod that matches the push-pull rod 63 is fixedly connected to the front of the first connecting block 66, and can be rotatably connected to the push-pull rod 63 through the rod.
[0042] The push-pull mechanism 6 also includes a second connecting block 67 fixedly connected to the bottom of the movable plate 5, and the second connecting block 67 is fixedly connected to the slide rod 65.
[0043] The second screen 15 is provided with a telescopic mechanism 18 on the left side. The base 1 is fixedly connected to the bottom of a support leg 19. The upper end of the movable plate 5 is rotatably connected to a second telescopic cylinder 20. The output end of the second telescopic cylinder 20 is fixedly connected to the bottom frame 10. The front and left sides of the bottom frame 10 are provided with the same structure as the rotating plate 16 and the telescopic mechanism 18.
[0044] The telescopic mechanism 18 includes a positioning rod 181 fixedly connected to the left end of the second screen 15, and a rotating block 182 rotatably connected to the periphery of the positioning rod 181.
[0045] The telescopic mechanism 18 also includes a first telescopic cylinder 183 fixedly connected to the front of the rotating block 182, and a third connecting block 184 fixedly connected to the output end of the first telescopic cylinder 183.
[0046] The telescopic mechanism 18 also includes a lever 185 rotatably connected to the third connecting block 184, and includes a connecting piece 186 fixedly connected to the front of the rotating plate 16, the connecting piece 186 being fixedly connected to the lever 185.
[0047] The upper end of the base 1 is fixedly connected to the first receiving box 21, which is located below the left end of the first screen 12. The upper end of the base 1 is fixedly connected to the second receiving box 22. The rotating plate 16 and the front end of the bottom frame 10 have the same structure as the rotating plate 16 and are located above the second receiving box 22 after opening.
[0048] With the above structure, the combined multi-layer rice destoner provided in this application can filter impurities larger than rice particles through the second screen 15 and filter impurities smaller than rice particles through the first screen 12, which fall into the bottom frame 10. Clean rice rolls out from the rear end of the first screen 12. While screening the rice, the motor 61 is started, and the motor 61 drives the turntable 62 to rotate. The turntable 62 can push and pull the first connecting block 66 through the push-pull rod 63. At this time, the second connecting block 67 moves left and right, and the second connecting block 67 drives the movable plate 5 to move left and right. At this time, both the second screen 15 and the first screen 12 move left and right, thereby improving the screening efficiency.
[0049] The first telescopic cylinder 183 can drive the third connecting block 184 to move forward. At this time, the third connecting block 184 drives the connecting piece 186 to move forward through the lever 185. At this time, the rotating plate 16 can be driven to rotate and open along the second screen 15 through the rotating rod 17. In the same way, the front structure of the bottom frame 10 can be opened. The second telescopic cylinder 20 can be extended to drive the rear end of the bottom frame 10 to rotate upward. At this time, the impurities inside the second screen 15 and the bottom frame 10 can roll to the front and fall into the second receiving box 22.
[0050] The above provides a detailed description of a combined multi-layer rice destoning machine provided in this application. Specific embodiments have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this application.
Claims
1. A combined multi-layer rice destoner, characterized in that, Includes a base (1), the upper end of which is fixedly connected to a first upright plate (2), and the first upright plate (2) is provided with four sets, with guide rods (3) fixedly connected between two sets of corresponding first upright plates (2), and a first connecting plate (4) slidably connected to the periphery of the guide rod (3), with a movable plate (5) fixedly connected to the upper end of the first connecting plate (4), a push-pull mechanism (6) provided on the upper end of the base (1), and a second upright plate (7) fixedly connected to the upper end of the movable plate (5), and the second upright plate (7) is provided with two sets, with a connecting rod (8) rotatably connected to the upper end of the second upright plate (7), and a second connecting plate (9) fixedly connected to both the left and right ends of the connecting rod (8), the second connecting... A bottom frame (10) is fixedly connected to the upper end of the plate (9). A first support rod (11) is fixedly connected to the upper end of the bottom frame (10). A first screen (12) is fixedly connected to the upper end of the first support rod (11). A baffle (13) is fixedly connected inside the first screen (12). A second support rod (14) is fixedly connected to the upper end of the first screen (12). A second screen (15) is fixedly connected to the upper end of the second support rod (14). A rotating plate (16) is rotatably connected to the front of the second screen (15). Rotating rods (17) are fixedly connected to both the left and right sides of the rotating plate (16). The rotating plate (16) is rotatably connected to the second screen (15) through the rotating rods (17).
2. The combined multi-layer rice destoning machine according to claim 1, characterized in that: The push-pull mechanism (6) includes a motor (61) fixedly connected to the upper end of the base (1) and a turntable (62) fixedly connected to the output end of the motor (61).
3. The combined multi-layer rice destoning machine according to claim 2, characterized in that: The push-pull mechanism (6) also includes a push-pull rod (63) rotatably connected to the front of the turntable (62), and a positioning block (64) fixedly connected to the upper end of the base (1).
4. The combined multi-layer rice destoning machine according to claim 3, characterized in that: The push-pull mechanism (6) further includes a slide rod (65) slidably connected to the positioning block (64), including a first connecting block (66) fixedly connected to the left end of the slide rod (65), and the push-pull rod (63) is rotatably connected to the first connecting block (66).
5. A combined multi-layer rice destoning machine according to claim 4, characterized in that: The push-pull mechanism (6) further includes a second connecting block (67) fixedly connected to the bottom of the movable plate (5), and the second connecting block (67) is fixedly connected to the slide rod (65).
6. A combined multi-layer rice destoning machine according to claim 5, characterized in that: The second screen (15) is provided with a telescopic mechanism (18) on the left side. The base (1) is fixedly connected to a support leg (19). The upper end of the movable plate (5) is rotatably connected to a second telescopic cylinder (20). The output end of the second telescopic cylinder (20) is fixedly connected to the bottom frame (10).
7. A combined multi-layer rice destoning machine according to claim 6, characterized in that: The telescopic mechanism (18) includes a positioning rod (181) fixedly connected to the left end of the second screen (15), and a rotating block (182) rotatably connected to the periphery of the positioning rod (181).
8. A combined multi-layer rice destoner according to claim 7, characterized in that: The telescopic mechanism (18) further includes a first telescopic cylinder (183) fixedly connected to the front of the rotating block (182), and a third connecting block (184) fixedly connected to the output end of the first telescopic cylinder (183).
9. A combined multi-layer rice destoning machine according to claim 8, characterized in that: The telescopic mechanism (18) also includes a lever (185) rotatably connected to the third connecting block (184), and includes a connecting piece (186) fixedly connected to the front of the rotating plate (16), the connecting piece (186) being fixedly connected to the lever (185).
10. A combined multi-layer rice destoning machine according to claim 9, characterized in that: The upper end of the base (1) is fixedly connected to a first receiving box (21), and the upper end of the base (1) is fixedly connected to a second receiving box (22).