Up-and-down staggered layer rice mill with up-and-down air suction function

Abstract

The invention relates to an up-and-down staggered layer rice mill with an up-and-down air suction function. The rice mill comprises an integral rack (1), an upper air suction rice mill body (2) is fixed to one side of the integral rack (1), a lower air suction rice mill body (3) is fixed to the other side of the integral rack (1), an upper transmission motor (4) is fixed to the other side of the lower air suction rice mill body (3), and a lower transmission motor (5) is fixed to the bottom of the lower air suction rice mill body (3). The rice husking machine is characterized in that an upper rice outlet (6) of the lower air suction rice husking machine (3) is in butt joint with a lower layer rice inlet (7) of the upper air suction rice husking machine (2), and a lower air suction opening (9) of the lower air suction rice husking machine (3) and an upper air suction opening (8) of the upper air suction rice husking machine (2) are combined through a pipeline (10) and then connected with an inlet of a cyclone separator (11). The roller mill can be flexibly matched with the milling rollers according to different requirements, and is widely applicable to rough milling, whitening and fine milling of various grains such as white rice, preboiled rice, sticky rice, sorghum and myotonin.

Description

Technical Field

[0001] The invention relates to a rice milling machine, in particular to an upper and lower staggered rice milling machine with upper and lower air suction functions. Background Art

[0002] Today's rice milling process generally employs a "multi-machine, light milling" approach. A minimum of three mills are used, but challenging rice varieties, such as glutinous rice, may require up to eight mills. This not only increases floor space and requires significant additional lifting equipment, but also significantly impacts the economic profitability of rice mills. The commonly used double-layer rice mills, while compact and capable of dual processing, often utilize a single motor drive. This restricts the flexibility of upper and lower roller configurations, forcing them to be either equipped with sandpaper or iron rollers, limiting their adaptability. Amidst fierce competition in the rice processing industry, traditional rice milling is already operating at a fraction of its profitability; even the slightest fluctuation in market prices can result in losses. Consequently, many rice mills are turning to new, high-quality rice varieties. These new rice varieties, whether grown in the north or south, share a common characteristic: their elongated grain shape. This shape limits their ability to withstand pressure, making reducing the rate of broken rice a primary concern in the rice processing process. There is no suitable rice milling machine to solve the above problems at present. Summary of the Invention

[0003] The purpose of the present invention is to address the defects of existing rice mills and provide an upper and lower staggered rice mill with upper and lower suction functions. It can flexibly match the milling rollers according to different requirements and can be widely used in the roughing, whitening and fine grinding of various grains such as white rice, parboiled rice, glutinous rice, sorghum, and Job's tears rice.

[0004] The technical solution of the present invention is implemented as follows: it 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 transmission motor (4) is fixed on the other side of the lower suction rice milling machine (3), and a lower transmission motor (5) is 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), 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 combined through a pipe (10) and connected to the inlet of a cyclone separator (11).

[0005] The preferred technical solution of the present invention 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), an upper rice outlet (6) is connected to the lower rice inlet (7) through a 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 provided 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 the independent motor drive of the upper and lower rollers, allowing for flexible roller combinations to suit different requirements, including either sand or iron rollers. The upper roller utilizes downward suction, while the lower roller utilizes upward suction. The staggered arrangement of the upper and lower rollers allows material flowing from the upper roller to be directly processed by the lower roller, eliminating the need for an elevator between the two rice mills and enabling a single machine to perform two rice milling steps. By combining the upper and lower rollers in various configurations, a single machine can perform both roughing and whitening, or whitening and fine milling. This makes it widely applicable to grain mills for roughing, whitening, and fine milling of a variety of grains, including white rice, parboiled rice, glutinous rice, sorghum, and Job's tears rice. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 A schematic structural diagram of the present invention Figure 2 A side view of the present invention Figure 3 A top view of the present invention 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 the present invention. DETAILED DESCRIPTION

[0008] The present invention will be further described below with reference to the accompanying drawings: like Figure 1 、 Figure 2 、 Figure 3 As shown, the present invention comprises 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 transmission motor (4) is fixed on the other side of the lower suction rice milling machine (3), and a lower transmission motor (5) is 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), 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 combined through a pipe (10) and connected to the inlet of the cyclone separator (11).

[0009] 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), an upper rice outlet (6) is connected to the lower rice inlet (7) through a 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).

[0010] Working Principle: Brown rice enters the upper whitening chamber from the upper feed hopper through a flow control mechanism, where it is fed to the rollers by a spiral head. Different rollers provide different whitening functions. Byproducts are discharged through the lower bran suction air net. Brown or whitened rice is discharged from the rice outlet, then passes through the lower feed hopper and flow control mechanism into the lower whitening chamber, where it is again fed to the rollers by a spiral head. Different rollers provide different whitening functions. Byproducts are divided into two parts: fine bran is discharged through the upper bran suction air net on the lower layer, and selenium is discharged through the selenium discharge port. Whitened rice is discharged from the rice outlet. Independent transmission mechanisms on the upper and lower layers allow for flexible roller changes, enabling true whitening with a combination of sand and iron rollers.

[0011] A notable feature of the present invention is its ability to process brown rice of varying qualities using different sand and iron combinations. The first downward-draft rice milling machine mentioned above typically uses an emery roller, whose primary function is to roughen the rice. This involves friction between the sand grains on the emery roller and the rice grains, creating a tearing effect. The hulls are then removed through collisions between the rice grains and between the rice grains and the screen. Typically, rice milling machines produce very little selenium, and the friction of the emery roller is sufficient to cause the rice grains to tumble, so using downward-draft technology achieves the desired effect.

[0012] The second suction rice mill also typically uses emery rollers when processing indica rice. Its function is to whiten the rice. This produces not only rice bran but also a large amount of rice germ and selenium. The upward suction separates the bran and selenium, ensuring a cleaner byproduct. Furthermore, the upward suction allows the wind to overcome the weight of the rice grains, allowing them to be fully suspended within the milling chamber, ensuring more uniform grinding and a whiter appearance of the rice leaving the mill.

[0013] The second suction rice mill typically uses iron rollers when processing japonica rice. Their function is to whiten and remove the germ. Whitening is achieved primarily through friction, compression, and collision, making this mill also known as a pressure-type rice mill. Furthermore, the germ of japonica rice is more tightly bound than that of indica rice, requiring greater whitening pressure. Furthermore, the iron rollers have minimal friction and limited conveying capacity. Therefore, upward suction reduces resistance within the milling chamber, overcoming the weight of the rice grains with wind power to increase tumbling and even out whitening pressure. The repairing effect of the iron rollers results in a brighter, more polished rice. Furthermore, this mill produces a high concentration of germ and selenium in the rice, and upward suction effectively separates the rice from the bran and selenium.

[0014] Another advantage of this split-layer rice milling system is that, as an independent system, it can achieve the goal of feeding rough rice into the machine and delivering finished rice under certain circumstances. In addition, in complex situations, the system can be superimposed to meet different processing requirements.

Claims

1. An upper and lower staggered rice milling machine with upper and lower suction functions, comprising an integral frame (1), an upper suction rice milling machine (2) being fixed on one side of the integral frame (1), a lower suction rice milling machine (3) being fixed on the other side of the integral frame (1), an upper transmission motor (4) being fixed on the other side of the lower suction rice milling machine (3), and a lower transmission motor (5) being fixed on 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), 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 combined through a pipe (10) and connected to the inlet of the cyclone separator (11).

2. The upper and lower staggered rice milling machine with upper and lower air suction function according to claim 1, characterized in that: The downward suction rice milling machine (3) includes a downward suction rice milling chamber (12), an emery roller (13) is provided in the downward suction rice milling chamber (12), a downward suction port (9) is fixed at the bottom of the downward suction rice milling chamber (12), an upper rice outlet (6) is connected to a lower rice inlet (7) through a hopper (14), and a downward suction feeding device (15) is installed at the top of the downward suction rice milling chamber (12).

3. The upper and lower staggered rice milling machine with upper and lower air suction function according to claim 1, characterized in that: 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 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).

Images