A top and bottom staggered rice mill with top and bottom air suction functions
By designing a staggered-layer rice milling machine with upper and lower suction functions, and adopting an independent motor drive and suction system, the problems of high broken rice rate and inflexible structure of traditional rice milling machines when processing long and thin rice have been solved. This has enabled efficient and flexible processing of multiple varieties of rice, reduced equipment footprint and energy consumption, and improved economic benefits.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI YINTAI WUFENG GRAIN MASCH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-14
AI Technical Summary
Existing rice milling machines have a high rate of broken rice when processing long and thin rice. Furthermore, the traditional upper and lower layer rice milling machine structure lacks flexibility and is difficult to adapt to the processing needs of various rice varieties, resulting in large equipment footprint, high energy consumption, and low economic efficiency.
Design a staggered rice milling machine with upper and lower suction functions. It adopts independent motor drive, and the upper and lower rollers can be flexibly matched. It is connected to the cyclone separator through the upper and lower suction ports to realize independent drive of the upper and lower rollers, reduce the lifting equipment, and is suitable for processing a variety of grains.
It enables the completion of two rice milling processes on a single machine, reducing the broken rice rate, improving equipment utilization, adapting to the processing needs of various rice varieties, reducing land occupation and energy consumption, and improving economic efficiency.
Smart Images
Figure CN224486116U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a rice milling machine, specifically a staggered rice milling machine with upper and lower suction functions. Background Technology
[0002] Modern rice milling processes commonly employ a "multi-machine light milling" approach, with a minimum of three milling machines used in combination. For more difficult-to-process rice varieties, such as glutinous rice, up to eight machines may be used. This increases floor space and requires significantly more lifting equipment, and energy consumption and broken rice issues have severely impacted the economic efficiency of rice processing plants. Currently, the commonly used double-layer rice milling machines, while compact and capable of processing two stages on a single machine, mostly use single-motor drives. Their structure also limits the flexibility of upper and lower roller combinations; both rollers must be either sand rollers or iron rollers, limiting the range of products they can handle. In the context of fierce competition in the rice processing industry, traditional rice processing is already a low-profit business; even slight fluctuations in market grain prices can lead to losses. Therefore, many rice processing plants are shifting towards new, high-quality rice varieties. These new rice varieties, whether grown in the north or south, share a common characteristic in grain shape: they are long and slender. This shape has limited compressive strength, making reducing broken rice a primary concern in the processing stage. There is currently no suitable rice milling machine to solve the above problems. Summary of the Invention
[0003] The purpose of this utility model is to address the shortcomings of existing rice milling machines by providing a staggered-layer rice milling machine with upper and lower suction functions. It can flexibly match the milling rollers according to different requirements and is widely applicable to the hulling, whitening, and fine milling of various grains such as white rice, parboiled rice, glutinous rice, sorghum, and Job's tears.
[0004] The technical solution of this utility model is implemented as follows: it includes an overall frame (1), an upper suction rice milling machine (2) is fixed on one side of the overall frame (1), a lower suction rice milling machine (3) is fixed on the other side of the overall frame (1), an upper drive motor (4) is fixed on the other side of the lower suction rice milling machine (3), and a lower drive motor (5) is fixed at the bottom of the lower suction rice milling machine (3). The characteristic is that the upper rice outlet (6) of the lower suction rice milling machine (3) is connected to the lower rice inlet (7) of the upper suction rice milling machine (2), and the lower suction port (9) of the lower suction rice milling machine (3) and the upper suction port (8) of the upper suction rice milling machine (2) are connected to the inlet of the cyclone separator (11) after being merged through the pipe (10).
[0005] The preferred technical solution of this utility model is as follows: The lower suction rice milling machine (3) includes a lower suction rice milling chamber (12), a sand roller (13) is provided in the lower suction rice milling chamber (12), a lower suction port (9) is fixed at the bottom of the lower suction rice milling chamber (12), the upper rice outlet (6) is connected to the lower rice inlet (7) through the hopper (14), and a lower suction feeding device (15) is installed at the top of the lower suction rice milling chamber (12). The upper suction rice milling machine (2) includes an upper suction rice milling chamber (16), an iron roller (17) is provided in the upper suction rice milling chamber (16), an upper suction port (8) is fixed at the top of the upper suction rice milling chamber (16), a rice discharge device (18) is installed at the bottom of the upper suction rice milling chamber (16), and a rice outlet (19) is provided on one side of the upper suction rice milling chamber (16).
[0006] The greatest advantage of this invention is its independent motor drive for the upper and lower rollers, allowing for flexible roller configurations to suit different requirements. It can be equipped with sand rollers or iron rollers. The upper roller uses downward suction, while the lower roller uses upward suction. The staggered arrangement of the rollers allows material flowing from the upper roller to directly enter the lower roller for processing, reducing the need for a lifting mechanism between two rice mills and achieving the goal of completing two rice milling processes in one machine. With multiple configurations of upper and lower rollers, it can complete hulling and whitening, or whitening and refining, in one machine. It is widely applicable to grain processing equipment for hulling, whitening, and refining various grains such as white rice, parboiled rice, glutinous rice, sorghum, and Job's tears. Attached Figure Description
[0007] Figure 1 This is a schematic diagram of the structure of the present invention.
[0008] Figure 2 This is a side view of the present invention.
[0009] Figure 3 This is a top view of the present invention.
[0010] Figure 4 This is a schematic diagram of the structure of the upper suction rice milling machine and the lower suction rice milling machine of this utility model. Detailed Implementation
[0011] The present invention will be further described below with reference to the accompanying drawings:
[0012] like Figure 1 , Figure 2 , Figure 3As shown, this utility model includes an integral frame (1), an upper suction rice milling machine (2) is fixed on one side of the integral frame (1), a lower suction rice milling machine (3) is fixed on the other side of the integral frame (1), an upper drive motor (4) is fixed on the other side of the lower suction rice milling machine (3), and a lower drive motor (5) is fixed at the bottom of the lower suction rice milling machine (3). The feature is that the upper rice outlet (6) of the lower suction rice milling machine (3) is connected to the lower rice inlet (7) of the upper suction rice milling machine (2), and the lower suction port (9) of the lower suction rice milling machine (3) and the upper suction port (8) of the upper suction rice milling machine (2) are connected to the inlet of the cyclone separator (11) after being merged through a pipe (10).
[0013] like Figure 4 As shown, the lower suction rice milling machine (3) includes a lower suction rice milling chamber (12), a sand roller (13) is provided in the lower suction rice milling chamber (12), a lower suction port (9) is fixed at the bottom of the lower suction rice milling chamber (12), the upper rice outlet (6) is connected to the lower rice inlet (7) through the hopper (14), and a lower suction feeding device (15) is installed at the top of the lower suction rice milling chamber (12). The upper suction rice milling machine (2) includes an upper suction rice milling chamber (16), an iron roller (17) is provided in the upper suction rice milling chamber (16), an upper suction port (8) is fixed at the top of the upper suction rice milling chamber (16), a rice discharge device (18) is installed at the bottom of the upper suction rice milling chamber (16), and a rice outlet (19) is provided on one side of the upper suction rice milling chamber (16).
[0014] Working Principle: Brown rice enters the upper whitening chamber through the upper feed hopper via the flow regulating mechanism, and is then fed to the milling rollers by the screw head. Different milling rollers perform different whitening functions. By-products are discharged through the lower suction air filter. The already opened or whitened rice exits through the rice outlet, then passes through the lower feed hopper and flow regulating mechanism into the lower whitening chamber, where it is again fed to the milling rollers by the screw head. Different milling rollers perform different whitening functions. By-products are divided into two parts: fine bran is discharged through the lower upper suction air filter, and rice bran is discharged through the bran outlet. The whitened rice exits through the rice outlet. The independent transmission mechanisms of the upper and lower layers allow for flexible roller changing, enabling true whitening with a combination of sand and iron rollers.
Claims
1. A staggered rice milling machine with upper and lower suction functions, comprising an integral frame (1), an upper suction rice milling machine (2) fixed on one side of the integral frame (1), a lower suction rice milling machine (3) fixed on the other side of the integral frame (1), an upper drive motor (4) fixed on the other side of the lower suction rice milling machine (3), and a lower drive motor (5) fixed at the bottom of the lower suction rice milling machine (3), characterized in that: The upper rice outlet (6) of the lower suction rice milling machine (3) is connected to the lower rice inlet (7) of the upper suction rice milling machine (2). The lower suction port (9) of the lower suction rice milling machine (3) and the upper suction port (8) of the upper suction rice milling machine (2) are connected to the inlet of the cyclone separator (11) after being merged through the pipe (10).
2. The staggered-layer rice milling machine with upper and lower suction function according to claim 1, characterized in that: The lower suction rice milling machine (3) includes a lower suction rice milling chamber (12), a sand roller (13) is provided in the lower suction rice milling chamber (12), a lower suction port (9) is fixed at the bottom of the lower suction rice milling chamber (12), the upper rice outlet (6) is connected to the lower rice inlet (7) through the hopper (14), and a lower suction feeding device (15) is installed on the top of the lower suction rice milling chamber (12).
3. A staggered-layer rice milling machine with upper and lower suction function according to claim 1, characterized in that: The above-suction rice milling machine (2) includes an upper-suction rice milling chamber (16), an iron roller (17) is provided in the upper-suction rice milling chamber (16), an upper air intake (8) is fixed on the top of the upper-suction rice milling chamber (16), a rice discharge device (18) is installed at the bottom of the upper-suction rice milling chamber (16), and a rice outlet (19) is provided on one side of the upper-suction rice milling chamber (16).