Efficient screening device for rice processing

By designing a driving mechanism and an efficient screening device with convenient replacement of screening drums, the problem of the existing drum screening machine being unable to change the size of the screen holes is solved, multi-stage screening and rice grading are achieved, and the purity and grading efficiency of rice are improved.

CN223367444UActive Publication Date: 2025-09-23SHUCHENG COUNTY XINLEI RICE IND CO LTD
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Patent Information

Application Number
CN202422597638.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-10-28
Publication Date
2025-09-23
Estimated Expiration
2034-10-28

AI Technical Summary

Technical Problem

The existing drum screening machine cannot change the size of the screen holes, resulting in low single-time screening efficiency and unable to meet the grading requirements of rice of different specifications.

Method used

An efficient screening device including a driving mechanism is designed. The screening drum is driven by a motor-driven synchronous wheel to rotate, thereby realizing multi-stage screening. The screening drum can be easily replaced through a threaded structure and a clamping block mechanism, supporting the use of screening drums with different sieve hole sizes.

Benefits of technology

It realizes multi-stage screening, which can effectively remove large and small particles of impurities in rice, improve the purity of rice, and facilitate separation and grading according to particle size to meet different market needs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an efficient screening device for rice processing, which relates to the technical field of rice processing and comprises a mounting rack, one side of the top of the mounting rack is fixedly connected with a feeding hopper, one end of the mounting rack is provided with a discharging mechanism, and the other side of the top of the mounting rack is fixedly connected with a driving mechanism. A screening barrel is arranged on one side of the driving mechanism, and the lower end of the feeding hopper communicates with the interior of the screening barrel. According to the utility model, through the arrangement of the driving mechanism, a plurality of screening barrels with different diameters can be rotated after being fixed, large-particle impurities can be screened out through the screening barrel with larger inner screening holes, small-particle impurities in rice can be screened out through the screening barrel with smaller outer screening holes, and compared with conventional drum-type screening, the screening efficiency is greatly improved. Multi-stage screening can be carried out at a time, after impurities are screened out, screening barrels with different screen hole sizes can be replaced, rice with impurities removed is put into the screening barrels again, separation is carried out according to the size of rice particles, and the rice screening device is more convenient to use.
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Description

Technical Field

[0001] The utility model relates to the technical field of rice processing, in particular to a high-efficiency screening device for rice processing. Background Art

[0002] Rice screening is a crucial step in rice grading and quality control. Its purpose is to classify rice by grain size to meet diverse market demands. For example, rice can be categorized into different sizes, such as large, medium, and small. Different rice sizes may vary in price and usage, and grading can help differentiate product sales. Screening also effectively removes impurities, such as stones, sand, and bran. These impurities not only affect the taste and quality of rice but can also damage processing equipment. Screening improves rice purity and ensures consumer safety.

[0003] The existing screening method is mostly to use a drum screening machine to screen the rice, but the existing drum screening machine can only perform a single screening and cannot replace the screening drum with different sieve hole sizes, which is inconvenient to use. Utility Model Content

[0004] The utility model provides a high-efficiency screening device for rice processing, so as to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A high-efficiency screening device for rice processing includes a mounting frame, a feed hopper is fixedly connected to one side of the top of the mounting frame, a feeding mechanism is provided at one end of the mounting frame, a driving mechanism is fixedly connected to the other side of the top of the mounting frame, a screening drum is provided on one side of the driving mechanism, and the lower end of the feed hopper is connected to the interior of the screening drum.

[0007] A further improvement of the technical solution of the present utility model is that: the driving mechanism includes a motor, one end of the motor shaft is fixedly connected to a first synchronous wheel, the bottom of the motor is fixedly connected to one side of the top of the mounting frame, the surface of the first synchronous wheel is engaged with a synchronous belt, and the inner wall of one end of the synchronous belt is engaged with a second synchronous wheel.

[0008] A further improvement of the technical solution of the present utility model is that one side of the second synchronous wheel is rotatably connected to the first fixed bracket, both ends of the first fixed bracket are fixedly connected to the surface of the mounting bracket, one side of the second synchronous wheel is fixedly connected to the rotating disk through a rotating shaft, and one side of the rotating disk is fixedly connected to the first threaded column.

[0009] A further improvement of the technical solution of the present utility model is that one end of the first threaded column is threadedly connected to a threaded sleeve, one end of the threaded sleeve is threadedly connected to a second threaded column, and one end of the second threaded column is fixedly connected to a mounting plate.

[0010] A further improvement of the technical solution of the present utility model is that: a telescopic rod is fixedly connected to one side of the mounting plate, one end of the telescopic rod is fixedly connected to one side of the rotating plate, a discharge port is provided on the surface of the mounting plate, and one side of the mounting plate is engaged with one end of the screening drum.

[0011] A further improvement of the technical solution of the present utility model is that: a second fixing frame is fixedly connected to the surface of the mounting frame, a second mounting plate is rotatably connected to one side of the second fixing frame, a mounting groove is fixedly connected to one side of the second mounting plate, and the interior of the mounting groove is plugged into one end of the screening drum.

[0012] A further improvement of the technical solution of the present utility model is that: one side of the second mounting plate is fixedly connected to a mounting piece, a push rod is inserted into the interior of the mounting piece, the surface of the push rod is fixedly connected to a limiting block, the top of the limiting block is fixedly connected to a spring, the top of the spring is fixedly connected to the surface of the mounting piece, one end of the push rod is fixedly connected to a clamping block, one side of the clamping block is set as an inclined surface, and the surface of the clamping block is inserted into the interior of the screening drum.

[0013] A further improvement of the technical solution of the present utility model is that: the material unloading mechanism includes a material receiving plate and a guide plate, and the bottom of one end of the material receiving plate is fixedly connected to one end of the guide plate.

[0014] A further improvement of the technical solution of the present invention is that: a plurality of screening cylinders are provided, and the screen holes gradually decrease from the inside to the outside.

[0015] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0016] The utility model provides a high-efficiency screening device for rice processing. Through the arrangement of a driving mechanism, a plurality of screening drums of different diameters can be fixed and then rotated. Large particles of impurities can be screened out through the screening drum with larger inner sieve holes, and small particles of impurities in rice can be screened out through the screening drum with smaller outer sieve holes. Compared with conventional drum-type screening, multi-stage screening can be performed at a time. After the impurities are screened out, screening drums with different sieve hole sizes can be replaced, and the rice after the impurities are removed can be put back into the screening drum to be separated according to the size of the rice particles, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 It is a side structural diagram of the utility model;

[0019] Figure 3 This is a schematic diagram of the exploded structure of the driving mechanism of the present utility model;

[0020] Figure 4 This is a schematic diagram of the exploded side structure of the driving mechanism of the present invention;

[0021] Figure 5 This is a schematic diagram of the structure of the driving mechanism of the utility model;

[0022] Figure 6 This is a schematic structural diagram of the driving mechanism and blanking mechanism of the utility model;

[0023] Figure 7 The driving mechanism of the utility model Figure 4 A is an enlarged structural diagram.

[0024] In the figure: 1. Mounting frame; 2. Feed hopper; 3. Unloading mechanism; 31. Receiving plate; 32. Guide plate; 4. Driving mechanism; 41. Motor; 42. First synchronous wheel; 43. Synchronous belt; 44. Second synchronous wheel; 45. First fixed frame; 46. Rotating plate; 47. First threaded column; 48. Threaded sleeve; 49. Second threaded column; 410. Mounting plate; 411. Telescopic rod; 412. Discharge port; 413. Second fixed frame; 414. Second mounting plate; 415. Mounting groove; 416. Mounting piece; 417. Push rod; 418. Limit block; 419. Spring; 420. Block; 5. Screening cylinder. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below with reference to the embodiments:

[0026] Example 1

[0027] like Figure 1-7 As shown, the utility model provides a high-efficiency screening device for rice processing, including a mounting frame 1, a feed hopper 2 is fixedly connected to one side of the top of the mounting frame 1, a feeding mechanism 3 is provided at one end of the mounting frame 1, a driving mechanism 4 is fixedly connected to the other side of the top of the mounting frame 1, a screening drum 5 is provided on one side of the driving mechanism 4, the lower end of the feed hopper 2 is connected to the interior of the screening drum 5, the driving mechanism 4 includes a motor 41, one end of the rotating shaft of the motor 41 is fixedly connected to a first synchronous wheel 42, the bottom of the motor 41 is fixedly connected to one side of the top of the mounting frame 1, the surface of the first synchronous wheel 42 is meshed with a synchronous belt 43, and the inner wall of one end of the synchronous belt 43 is meshed with a second synchronous wheel 44.

[0028] In this embodiment, during use, rice is poured into the screening drum 5, and then the motor 41 is started, so that the first synchronous wheel 42 drives the second synchronous wheel 44 to rotate through the synchronous belt 43, and then the rotating disk 46 drives the first mounting disk 410 to rotate the screening drum 5 to screen the rice. Large particles of impurities in the rice are screened out through the screening drum 5 with larger sieve holes in the inner layer, and impurities with smaller particle sizes are screened out through the screening drum 5 with smaller sieve holes in the outer layer.

[0029] Example 2

[0030] like Figure 1-7 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, one side of the second synchronous wheel 44 is rotatably connected to the first fixed frame 45, and both ends of the first fixed frame 45 are fixedly connected to the surface of the mounting frame 1, and one side of the second synchronous wheel 44 is fixedly connected to the rotating disk 46 through a rotating shaft, and one side of the rotating disk 46 is fixedly connected to the first threaded column 47, one end of the first threaded column 47 is threadedly connected to the threaded sleeve 48, and one end of the threaded sleeve 48 is threadedly connected to the second threaded column 49, and one end of the second threaded column 49 is fixedly connected to the mounting disk 410, and one side of the mounting disk 410 is fixedly connected to the telescopic rod 411, and one end of the telescopic rod 411 is fixedly connected to one side of the rotating disk 46, and a discharge port 412 is provided on the surface of the mounting disk 410, and one side of the mounting disk 410 is engaged with one end of the screening drum 5.

[0031] In this embodiment, by discharging rice, large particles of impurities and small particles of impurities from different discharge ports 412, after the rice is collected, the threaded sleeve 48 is rotated to shrink the first threaded column 47 and the second threaded column 49 into the threaded sleeve 48, so that the first mounting plate 410 is separated from the screening drum 5, and then the top rod 417 is pulled to disengage the blocking block 420 from the screening drum 5, and the screening drum 5 can be removed for replacement.

[0032] Example 3

[0033] like Figure 1-7As shown, on the basis of embodiment 1, the utility model provides a technical solution: preferably, the surface of the mounting frame 1 is fixedly connected with a second fixing frame 413, one side of the second fixing frame 413 is rotatably connected with a second mounting plate 414, one side of the second mounting plate 414 is fixedly connected with a mounting groove 415, the interior of the mounting groove 415 is plugged with one end of the screening drum 5, one side of the second mounting plate 414 is fixedly connected with a mounting piece 416, the interior of the mounting piece 416 is plugged with a push rod 417, and the surface of the push rod 417 is fixedly connected with the second fixing frame 413. A limit block 418 is fixedly connected, and a spring 419 is fixedly connected to the top of the limit block 418. The top of the spring 419 is fixedly connected to the surface of the mounting member 416. One end of the top rod 417 is fixedly connected to a clamping block 420. One side of the clamping block 420 is set as an inclined surface. The surface of the clamping block 420 is plugged into the interior of the screening drum 5. The unloading mechanism 3 includes a material receiving plate 31 and a guide plate 32. The bottom of one end of the material receiving plate 31 is fixedly connected to one end of the guide plate 32. The screening drum 5 is provided with multiple sieve holes, and the sieve holes gradually shrink from the inside to the outside.

[0034] In this embodiment, by inserting the new screening drum 5 into the mounting groove 415, pushing the inclined surface of the block 420, the block 420 moves up and compresses the spring 419. After the screening drum 5 is inserted into the bottom of the mounting groove 415, the block 420 can be pushed down under the elastic force of the spring 419 and inserted into the screening drum 5. Then, the threaded sleeve 48 is rotated in the opposite direction to make the first mounting plate 410 contact with one end of the screening drum 5 again, engage with it, and fix it. After the replacement is completed, the rice is put into the screening drum 5 for screening again, and the rice can be screened by the screening drum 5 with different sieve hole sizes.

[0035] The working principle of the high-efficiency screening device for rice processing is described in detail below.

[0036] like Figure 1-7As shown, during use, rice is poured into the screening drum 5, and then the motor 41 is started to make the first synchronous wheel 42 drive the second synchronous wheel 44 to rotate through the synchronous belt 43, and then the rotating disk 46 drives the first mounting disk 410 to rotate the screening drum 5 to screen the rice. The large particles of impurities in the rice are screened out through the screening drum 5 with larger screen holes in the inner layer, and the impurities with smaller particle sizes are screened out through the screening drum 5 with smaller screen holes in the outer layer. Then, the rice, large particles of impurities and small particles of impurities are discharged from different discharge ports 412. After the rice is collected, the threaded sleeve 48 is rotated to shrink the first threaded column 47 and the second threaded column 49 into the threaded sleeve 48, so that the first mounting disk 410 and the screening drum 5 are in contact with each other. The screening drum 5 is separated, and then the push rod 417 is pulled to disengage the block 420 from the screening drum 5, and the screening drum 5 can be removed for replacement, and the new screening drum 5 is inserted into the mounting groove 415, and the inclined surface of the block 420 is pushed to move the block 420 upward and compress the spring 419. After the screening drum 5 is inserted into the bottom of the mounting groove 415, the block 420 can be pushed downward under the elastic force of the spring 419 and inserted into the screening drum 5. Then, the threaded sleeve 48 is rotated in the opposite direction to make the first mounting plate 410 contact with one end of the screening drum 5 again, engage with it, and fix it. After the replacement is completed, the rice is put into the screening drum 5 for screening again, and the rice can be screened by the screening drum 5 with different sieve hole sizes.

[0037] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A high-efficiency screening device for rice processing, comprising a mounting frame (1), characterized in that: A feed hopper (2) is fixedly connected to one side of the top of the mounting frame (1), a discharge mechanism (3) is provided at one end of the mounting frame (1), a drive mechanism (4) is fixedly connected to the other side of the top of the mounting frame (1), a screening drum (5) is provided on one side of the drive mechanism (4), and the lower end of the feed hopper (2) is communicated with the interior of the screening drum (5).

2. The high-efficiency screening device for rice processing according to claim 1, characterized in that: The driving mechanism (4) comprises a motor (41), one end of the motor (41) rotating shaft is fixedly connected to a first synchronous wheel (42), the bottom of the motor (41) is fixedly connected to one side of the top of the mounting frame (1), the surface of the first synchronous wheel (42) is meshed with a synchronous belt (43), and the inner wall of one end of the synchronous belt (43) is meshed with a second synchronous wheel (44).

3. The high-efficiency screening device for rice processing according to claim 2, characterized in that: One side of the second synchronous wheel (44) is rotatably connected to a first fixed frame (45), both ends of the first fixed frame (45) are fixedly connected to the surface of the mounting frame (1), one side of the second synchronous wheel (44) is fixedly connected to a rotating disk (46) via a rotating shaft, and one side of the rotating disk (46) is fixedly connected to a first threaded column (47).

4. The high-efficiency screening device for rice processing according to claim 3, characterized in that: One end of the first threaded column (47) is threadedly connected to a threaded sleeve (48), one end of the threaded sleeve (48) is threadedly connected to a second threaded column (49), and one end of the second threaded column (49) is fixedly connected to a mounting plate (410).

5. The high-efficiency screening device for rice processing according to claim 4, characterized in that: A telescopic rod (411) is fixedly connected to one side of the mounting plate (410), one end of the telescopic rod (411) is fixedly connected to one side of the rotating plate (46), a discharge port (412) is provided on the surface of the mounting plate (410), and one side of the mounting plate (410) is engaged with one end of the screening drum (5).

6. The high-efficiency screening device for rice processing according to claim 5, characterized in that: A second fixing frame (413) is fixedly connected to the surface of the mounting frame (1); a second mounting plate (414) is rotatably connected to one side of the second fixing frame (413); a mounting groove (415) is fixedly connected to one side of the second mounting plate (414); and the interior of the mounting groove (415) is plugged into one end of the screening drum (5).

7. The high-efficiency screening device for rice processing according to claim 6, characterized in that: One side of the second mounting plate (414) is fixedly connected to a mounting piece (416), a push rod (417) is inserted into the interior of the mounting piece (416), a surface of the push rod (417) is fixedly connected to a limiting block (418), a top of the limiting block (418) is fixedly connected to a spring (419), a top of the spring (419) is fixedly connected to the surface of the mounting piece (416), one end of the push rod (417) is fixedly connected to a clamping block (420), one side of the clamping block (420) is set as an inclined surface, and the surface of the clamping block (420) is inserted into the interior of the screening drum (5).

8. The high-efficiency screening device for rice processing according to claim 1, characterized in that: The material discharge mechanism (3) comprises a material receiving plate (31) and a flow guide plate (32), and the bottom of one end of the material receiving plate (31) is fixedly connected to one end of the flow guide plate (32).

9. The high-efficiency screening device for rice processing according to claim 1, characterized in that: The screening cylinder (5) is provided with a plurality of sieve holes, the sieve holes of which gradually decrease from the inside to the outside.