Adjustable vibration classifying screen for rice processing
By installing a worm gear and servo motor driven adjustment component on the rice grading screen, the screen hole diameter can be flexibly adjusted, solving the problem of mismatch between the screen hole and the rice size, and improving screening efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN YUNZHIXIANG RICE CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-05-08
AI Technical Summary
The existing rice grading screens have mesh sizes that do not match the size of Babao rice, resulting in low screening efficiency and an inability to effectively separate Babao rice from impurities.
An adjustable vibrating grading screen was designed. By installing adjustment components on the screening plate, including a worm gear, a moving block and a servo motor, the diameter of the screen holes can be flexibly adjusted. Combined with the vibration and tilting screening box, the screen holes are matched with the size of the rice grains.
It improves screening accuracy, reduces accumulation and impurity residue, significantly speeds up the processing flow, and adapts to the grading needs of rice of different sizes.
Smart Images
Figure CN224208512U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grain processing technology, and in particular to an adjustable vibrating grading screen for rice processing. Background Technology
[0002] Rice grading screens are important equipment used in rice processing to screen and grade rice. They are mainly used to classify rice according to particle size, shape or other physical characteristics to facilitate subsequent processing, quality control and product packaging.
[0003] Due to the influence of climate, soil and other natural conditions, as well as variety differences, the size of rice produced in different regions varies significantly. For example, the grains of Babao rice from Guangnan County are usually larger than ordinary rice, with a length of about 7-8 mm, a width of about 3-4 mm, and a thickness of about 2-3 mm. They are also more plump and round in appearance. When the sieve holes on the grading screen do not match the size of the Babao rice, the sieve plate will not be able to effectively separate the Babao rice from impurities. This may cause the Babao rice to fail to pass through the sieve holes smoothly, resulting in a slowdown in the discharge speed and accumulation on the sieve surface, which will affect subsequent screening and make it impossible to achieve accurate separation. Utility Model Content
[0004] The purpose of this invention is to solve the problem that when the size of the sieve holes on the grading sieve does not match that of the rice, the sieve plate cannot effectively separate the rice from impurities. Therefore, an adjustable vibrating grading sieve for rice processing is proposed.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An adjustable vibrating grading screen for rice processing includes a support frame, a screening box rotatably connected to the support frame, an inlet and an outlet respectively opened on the screening box, a collection box placed at the bottom of the support frame, and two screening plates fixedly installed inside the screening box, with adjustment components for adjusting the screen hole diameter mounted on the screening plates.
[0007] The adjustment assembly includes several worm gears rotatably mounted on the bottom end of the screening plate. Several moving grooves are opened at the bottom end of the screening plate, and several moving blocks are slidably connected to the moving grooves. Several through grooves are opened at the bottom end of the worm gears. A rotating component capable of driving the worm gears to rotate is assembled at the bottom end of the screening plate. An auxiliary component capable of assisting the operation of the screening box is also assembled on the bracket.
[0008] As a further description of the above technical solution:
[0009] The rotating component includes a servo motor fixedly installed on one side of the screening box, and a number of worm gears rotatably connected to the bottom end of the screening plate. A gear is fixedly installed at one end of each of the worm gears, and a synchronous belt meshes between the gears.
[0010] As a further description of the above technical solution:
[0011] One end of one of the worm gears is fixedly mounted on the output end of the servo motor. The worm gear meshes with the worm wheel, and the gear and the timing belt are both located on the outside of the screening box.
[0012] As a further description of the above technical solution:
[0013] The worm gear is located at the bottom of the sieve hole of the screening plate, the moving groove is located between the sieve hole and the worm gear, the moving groove is hexagonal, and a cylinder is fixedly installed at the bottom of the moving block, the cylinder is located between the through grooves.
[0014] As a further description of the above technical solution:
[0015] The auxiliary component includes a sealing plate hinged to one side of the screening box, a collection box fixedly installed on the other side of the screening box, and several springs fixedly installed between the screening box and the support.
[0016] As a further description of the above technical solution:
[0017] One end of each of the two discharge ports extends into the inside of the collection box. A rectangular groove is provided on the side of the screening box near the sealing plate. The screening box is set at an angle.
[0018] As a further description of the above technical solution:
[0019] The bottom of the screening box is provided with a discharge port, which is located directly above the collection box. The position of the discharge port is adapted to the screening plate.
[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0021] By assembling an adjustment component on the screening plate that can adjust the diameter of the sieve holes, the limitations of fixed sieve holes in existing grading sieves are effectively solved. First, the size of the sieve holes can be flexibly adjusted according to the size of the rice, making it highly compatible with the size of Guangnan County Babao rice. By increasing the diameter of the sieve holes, Babao rice can pass through smoothly; by decreasing the diameter of the sieve holes, Babao rice and impurities can be accurately separated, significantly improving screening accuracy. It also reduces the problem of Babao rice accumulation or impurity residue caused by the mismatch between the sieve holes and the size of Babao rice, and speeds up the processing flow. Attached Figure Description
[0022] Figure 1An overall schematic diagram according to an embodiment of the present utility model is shown;
[0023] Figure 2 A cross-sectional view of a screening box provided according to an embodiment of the present invention is shown;
[0024] Figure 3 A schematic diagram of the screening plate provided according to an embodiment of the present invention is shown;
[0025] Figure 4 This diagram shows a sieve plate separated from the adjustment assembly according to an embodiment of the present invention.
[0026] Figure 5 A schematic diagram of a rotating component provided according to an embodiment of the present invention is shown.
[0027] Legend:
[0028] 10. Support frame; 11. Screening box; 12. Discharge port; 13. Collection box; 14. Screening plate;
[0029] 20. Adjustment component; 21. Worm gear; 22. Moving slot; 23. Moving block; 24. Through slot; 25. Rotating component; 251. Servo motor; 252. Worm gear; 253. Gear; 254. Synchronous belt;
[0030] 30. Auxiliary components; 31. Sealing plate; 32. Collection box; 33. Spring. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0032] like Figures 1-5As shown, the present invention provides an adjustable vibrating grading screen for rice processing, including a support 10, a screening box 11 rotatably connected to the support 10, a feed inlet and a discharge outlet 12 respectively on the screening box 11, eight-treasure rice is poured into the screening box 11 through the feed inlet, larger impurities are discharged by the upper screening plate 14, and the screened eight-treasure rice is discharged by the bottom screening plate 14, two screening plates 14 are fixedly installed inside the screening box 11, and the eight-treasure rice is screened by the two screening plates 14 to separate the eight-treasure rice from the impurities, a collection box 13 is placed at the bottom of the support 10, and the separated impurities are collected by the collection box 13, and an adjustment component 20 that can adjust the diameter of the screen holes is mounted on the screening plate 14;
[0033] The adjustment assembly 20 includes several worm gears 21 rotatably mounted on the bottom of the screening plate 14. There are two sets of adjustment assemblies 20, arranged vertically. Several moving grooves 22 are opened at the bottom of the screening plate 14. Several moving blocks 23 are slidably connected to the moving grooves 22. The moving blocks 23 ensure the direction of movement through the moving grooves 22. Several through grooves 24 are opened at the bottom of the worm gears 21. A rotating component 25 capable of driving the worm gears 21 to rotate is installed at the bottom of the screening plate 14. An auxiliary component 30 capable of assisting the operation of the screening box 11 is also installed on the support 10.
[0034] like Figures 3-5 As shown, the rotating component 25 includes a servo motor 251 fixedly installed on one side of the screening box 11. Several worm gears 252 are rotatably connected to the bottom end of the screening plate 14. Gears 253 are fixedly installed at one end of each worm gear 252. A synchronous belt 254 meshes between the gears 253. Through the meshing transmission of the synchronous belt 254, the gears 253 can rotate synchronously.
[0035] In more detail, one end of one of the worm gears 252 is fixedly installed on the output end of the servo motor 251. The servo motor 251 can drive the corresponding worm gear 252 to rotate. The worm gear 252 meshes with the worm wheel 21. The rotating worm gear 252 causes the worm wheel 21 to rotate as well. The gear 253 and the timing belt 254 are both located on the outside of the screening box 11.
[0036] In more detail, the worm gear 21 is located at the bottom of the screen hole of the screening plate 14, the moving groove 22 is located between the screen hole and the worm gear 21, the moving groove 22 is hexagonal, and a cylinder is fixedly installed at the bottom of the moving block 23, the cylinder is located between the through grooves 24;
[0037] In use, two servo motors 251 are started respectively, causing the servo motors 251 to drive the corresponding worm gears 252 to rotate. Through meshing, the worm wheel 21 also starts to rotate. When the worm wheel 21 rotates, it squeezes and pushes the cylinder on the moving block 23 through the through groove 24, causing several moving blocks 23 to move in the same direction through the cylinder in the moving groove 22 (e.g., Figure 5 As shown), a gap will be formed in the middle of several moving blocks 23, so that the size of the gap formed by several moving blocks 23 at the bottom of the lower screening plate 14 is smaller than that of Babao rice, while the size of the gap formed by several moving blocks 23 at the bottom of the upper screening plate 14 is adapted to Babao rice.
[0038] Next, the eight-treasure rice is poured into the screening box 11 through the feed inlet. At this time, the eight-treasure rice will roll on the inclined screening plate 14. The screening plate 14 separates the eight-treasure rice from impurities. At the same time, the driving mechanism makes the screening box 11 vibrate, so that the eight-treasure rice can vibrate on the screening plate 14. Through vibration, the eight-treasure rice on the top screening plate 14 falls into the bottom screening plate 14 through the gap formed by several moving blocks 23. Since the size of the gap formed by several moving blocks 23 on the bottom screening plate 14 is smaller than the eight-treasure rice, the eight-treasure rice will move on the bottom screening plate 14 and be discharged and collected through the corresponding discharge port 12.
[0039] Impurities smaller than Babao rice will fall into the screening box 11 through the bottom screening plate 14, and then fall into the collection box 13 through the discharge port for collection. Large particles of impurities on the top screening plate 14 will be discharged and collected through the corresponding discharge port 12.
[0040] like Figure 1 As shown, the auxiliary component 30 includes a sealing plate 31 hinged to one side of the screening box 11, and a collection box 32 is fixedly installed on the other side of the screening box 11. After the eight-treasure rice is discharged, it will enter the collection box 32. Several springs 33 are fixedly installed between the screening box 11 and the support 10. When the screening box 11 is raised or lowered, the springs 33 will also deform, and the vibration amplitude will be increased by the deformed springs 33.
[0041] In more detail, one end of each of the two discharge ports 12 extends into the inside of the collection box 32. A rectangular groove is provided on the side of the screening box 11 near the sealing plate 31. By opening the sealing plate 31, the rectangular groove is exposed, and the inside of the screening box 11 can be inspected through the rectangular groove. The screening box 11 is set at an angle.
[0042] In more detail, the bottom of the screening box 11 is provided with a discharge port, which is located directly above the collection box 13. The discharge port allows impurities at the bottom of the screening box 11 to be discharged and fall into the collection box 13 for collection. The position of the discharge port 12 is adapted to the screening plate 14. A drive mechanism is also provided on the support 10. The drive mechanism is an electric telescopic rod in the prior art. One end of the screening box 11 is connected to the electric telescopic rod through a hinge seat. The electric telescopic rod can drive one end of the screening box 11 to rise or fall.
[0043] After the rice is poured into the screening box 11, the electric telescopic rod is activated to drive the hinge seat to raise or lower one end of the screening box 11, allowing the rice to shake inside the screening box 11 to prevent accumulation. When the screening box 11 is raised or lowered, the spring 33 will also deform. The deformed spring 33 increases the vibration amplitude, allowing the rice to be screened from impurities through vibration inside the screening box 11.
[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An adjustable vibrating grading screen for rice processing, comprising a support (10), a screening box (11) rotatably connected to the support (10), the screening box (11) having an inlet and an outlet (12) respectively, a collection box (13) placed at the bottom of the support (10), and two screening plates (14) fixedly installed inside the screening box (11), characterized in that, Also includes: The sieve plate (14) is equipped with an adjustment component (20) that can adjust the diameter of the sieve holes; The adjustment assembly (20) includes several worm gears (21) rotatably mounted on the bottom end of the screening plate (14). Several moving grooves (22) are provided at the bottom end of the screening plate (14). Several moving blocks (23) are slidably connected to the moving grooves (22). Several through grooves (24) are provided at the bottom end of the worm gears (21). A rotating component (25) capable of driving the worm gears (21) to rotate is mounted at the bottom end of the screening plate (14). An auxiliary component (30) capable of assisting the operation of the screening box (11) is also mounted on the bracket (10).
2. The adjustable vibrating grading screen for rice processing according to claim 1, characterized in that, The rotating component (25) includes a servo motor (251) fixedly installed on one side of the screening box (11), and a plurality of worm gears (252) are rotatably connected to the bottom end of the screening plate (14). A gear (253) is fixedly installed at one end of the plurality of worm gears (252), and a synchronous belt (254) meshes between the plurality of gears (253).
3. An adjustable vibrating grading screen for rice processing according to claim 2, characterized in that, One end of one of the worm gears (252) is fixedly mounted on the output end of the servo motor (251). The worm gear (252) meshes with the worm wheel (21). The gear (253) and the timing belt (254) are both located on the outside of the screening box (11).
4. An adjustable vibrating grading screen for rice processing according to claim 3, characterized in that, The worm gear (21) is located at the bottom of the sieve hole of the sieve plate (14), the moving groove (22) is located between the sieve hole and the worm gear (21), the moving groove (22) is hexagonal, and a cylinder is fixedly installed at the bottom of the moving block (23), the cylinder is located between the through grooves (24).
5. An adjustable vibrating grading screen for rice processing according to claim 1, characterized in that, The auxiliary component (30) includes a sealing plate (31) hinged to one side of the screening box (11), a collection box (32) fixedly installed on the other side of the screening box (11), and a number of springs (33) fixedly installed between the screening box (11) and the support (10).
6. An adjustable vibrating grading screen for rice processing according to claim 5, characterized in that, One end of each of the two discharge ports (12) extends into the inside of the collection box (32). The screening box (11) has a rectangular groove on the side near the sealing plate (31). The screening box (11) is set at an angle.
7. An adjustable vibrating grading screen for rice processing according to claim 6, characterized in that, The bottom of the screening box (11) is provided with a discharge port, which is located directly above the collection box (13). The position of the discharge port (12) is adapted to the screening plate (14).