JPS63194740A - Continuous rice refining apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a continuous rice milling device that processes rice grains into high-quality polished rice by humidifying the rice grains.

BACKGROUND OF THE INVENTION Generally, in large rice milling factories, a grinding type rice milling machine is used in the front stage and a friction type rice milling machine is used in the trailing stage, which are arranged in series. In other words, after the waxy structure of the outer skin of rice grains (brown rice) is removed using a grinding-type rice mill to increase the friction coefficient of the surface layer, the rice bran layer is peeled off using a friction-type rice mill to perform rational polishing.

However, by increasing the friction coefficient with a grinding rice mill and milling with a friction rice mill, it is possible to lower the pressure of the friction milling action, but this alone still requires a large milling load and cannot reduce the occurrence of broken grains. The problem was that it couldn't be done.

Problems to be Solved by the Invention The present invention solves the above-mentioned problems and achieves economical high-quality refined rice with less broken rice by rationally and efficiently carrying out the humidifying action and the refining action continuously. The purpose of the present invention is to provide a continuous rice milling device that can process polished rice.

Means for Solving the Problems In order to achieve this object, the present invention is constructed as follows.

In the rear stage of the grinding chamber, which has a porous-walled bran removal polishing tube and a grinding polishing trochanter as its main parts, one or more friction polishing chambers have a porous-walled bran removal polishing tube and a friction polishing trochanter as its main parts. Arrange the chambers in series. A humidifying device is connected to at least the friction polishing chamber of the first stage to form a continuous rice polishing device.

Operation The rice grains (brown rice) supplied to the grinding-type whitening chamber are milled by the grinding-type milling action generated by the rotation of the grinding-milling trochanter, and then sent to the friction-milling chamber. In the friction polishing room, the surface of the rice grains, which have been roughened by the grinding process, is moistened and softened by the addition of moisture to the surface by a humidifier. The thin layer of the softened rice grains is peeled off by the stirring action of the friction polishing trochanter, and the rice grains are processed into high-quality polished rice by the mutual friction polishing action.

Embodiments An embodiment of the present invention will be described with reference to the drawings. 1st
The figure is a side view of a continuous rice milling device implementing the present invention. Reference numeral 1 denotes a continuous rice milling device, in which friction-type rice milling machines 3, 3A, and 3B are arranged in series in the downstream stage of the grinding-type rice milling machine 2. The grain lifting machine 4 is connected to the grinding type rice milling machine 2 through the supply tank 5, and has a spiral rotor on a main shaft 7 rotatably provided in a perforated-walled rice polishing cylinder 6 installed horizontally in the grinding type rice milling machine 2. 8 and grinding white trochanter 9
A grinding and polishing chamber 10 whose main parts include a porous-walled bran removal polishing cylinder 6, a spiral trochanter 8, and a grinding and polishing trochanter 9.
and the supply tank 5 are communicated through the supply port 11. The lower part of the porous-walled rice bran polishing cylinder 6 is connected to a rice bran collecting chamber 12, and the rice bran collecting room 12 is connected to a rice bran discharge pipe 14 via an exhaust air 113.

The grinding and whitening chamber 1o is connected to a discharge port 15, and the discharge port 15 is provided with a resistance plate 17 of a grinding precision adjusting device 16. The discharge port 15 of the grinding rice mill 2 is connected to the friction rice mill 3 via a grain lifting machine 4A and a supply tank 5A. A spiral rotor 19 and a friction polishing rotor 2 are respectively mounted on a hollow main shaft 18 which is rotatably provided in a porous wall rice polishing tube 17 arranged in m stages in a friction type rice milling machine 3. Porous wall bran removal polishing cylinder 17 and spiral rotor 1
9 and a friction whitening chamber 21 having a friction whitening trochanter 20 as main parts.
and the supply tank 5A are communicated via the supply port 22.

Reference numeral 23 is a rice bran collection chamber, and a rice bran discharge pipe 25 is passed through an exhaust fan 24.
26 is a resistance plate provided at the discharge port 27. A large number of ventilation holes 28 formed in the hollow main shaft 18 communicate with the blast slots 29 of the friction whitening trochanter 20, and an injection nozzle 31 of a humidifying device 30 is provided at one end of the main shaft 1'8.

The water supply pipe 32 side of the injection nozzle 31 is connected to a water tank 34 via a flow control valve 33, and the air supply pipe 35 is connected to a friction rice mill 3A via a grain lifting machine 4A. It is connected to the friction rice mill 3B via the grain lifting machine 4B.

Next, the operation of the above configuration will be explained. From the grain lifting machine 4 to the supply tank 5. Rice grains (brown rice) supplied to the spiral trochanter 8 through the supply port 11 are sent to the grinding and whitening chamber 10 by the spiral trochanter 8. In the grinding and whitening chamber 10, rice grains are milled under the milling action generated by the rotation of the grinding and milling trochanter 9, and the milled rice grains are sent to the discharge port 15. At this time, due to the grinding action of the rice grains, the waxy structure of the surface layer of the rice grains is cut away, the friction coefficient of the surface layer increases, and the surface of the rice grains is formed into a rough surface. Dust such as rice bran generated by the polishing process is discharged from the through hole of the porous-walled bran removal and polishing cylinder 6 and sent to the rice bran collection chamber 12, where it is sucked and pressure-fed by the waste removal machine 13, and passed through the rice bran removal pipe 14 to the cyclone ( It is sent to a bran collector such as a bran collector (not shown). And the rice grains are fried grains TA4
The rice is supplied from A through the supply tank 5A and the supply port 22 to one spiral rotor of the friction type rice milling machine 3, and sent to the friction polishing chamber 21 by the one spiral rotor where it is subjected to a humidifying effect. That is, water supplied from the water tank 34 through the water supply pipe 32 is ejected from the injection nozzle 31 as a mist of wet air together with compressed air from the air compressor 36. This foggy damp air is removed by the exhaust fan 24.
Due to the suction force, water is ejected from the blast slot 29 of the friction milling trochanter 20 into the friction milling chamber 21 through each ventilation port 28 provided on the main shaft 18, and water is supplied to the rice grains in the friction milling chamber 21. . The surface of the rice grain is moistened and softened by the addition of water, and the thin layer is immediately peeled off by the stirring action of the friction whitening roller 20. At this time, since the rice grains are moistened and softened, the milling load is reduced and the thin layer is efficiently peeled off. Furthermore, since the milling process is carried out under a light load, the generation of broken rice can be completely prevented, and since the rice grains are moistened and softened, the bran layer on the vertical R portion of the rice grains can be completely removed. The peeled rice bran and water are discharged from the holes in the porous-walled rice bran polishing cylinder 17 and sent to the rice bran collection chamber 23, where they are sucked and pressure-fed by the rice bran discharger 24, and passed through the rice bran discharge pipe 25 into a cyclone (not shown). The rice is sent to a rice bran collector such as Then, the rice grains are processed into high-quality polished rice without broken rice with a predetermined milling precision by the friction polishing action of the friction polishing trochanter 20, and are passed from the discharge port 27 of the friction rice mill 3 to the grain lifting machine 5A to the friction rice mill. Sent to 3A. The rice grains milled by the friction rice mill 3A are sent to the friction rice mill 3B via the grain lifting machine 5B, where they are finally milled and sent to the next process.

Effects of the Invention According to the continuous rice milling apparatus of the present invention, the friction milling chamber is arranged in a series process after the grinding milling chamber, and the humidifying device is connected to at least the friction milling chamber in the first step.
Moisture is added to the surface of the rice grains, which have become rough due to the grinding and milling action, making them moist and soft, which reduces the milling load in the friction milling room and enables efficient milling. The light milling process completely prevents the occurrence of broken rice, and since the rice grains are moistened and softened, the bran layer in the longitudinal grooves of the rice grains can be completely removed, resulting in beautiful, high-quality polished rice. Can be processed.

In addition, since it can be pumped with low load, less power is required.
Production costs can be significantly reduced.

[Brief explanation of the drawing]

FIG. 1 is a side view of a continuous rice milling apparatus embodying the present invention.

Claims (1)

[Claims] In the rear stage of the grinding chamber, which has a porous-walled bran removal polishing tube and a grinding polishing trochanter as its main parts, one or more friction polishing chambers have a porous-walled bran removal polishing tube and a friction polishing trochanter as its main parts. A continuous rice milling device in which chambers are arranged in a series process, characterized in that a humidifier is connected to at least the friction milling chamber in the first process.