JPS60187341A - Recirculation type rice refiner - 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 The present invention mainly relates to a circulation type rice milling machine among various rice milling machines. It is an object of the present invention to provide a new circulation type rice milling machine that can prevent the occurrence of rice milling and dramatically improve its milling ability.

As is well known, during the grain milling operation in a circulating rice mill, the grains loaded inside the hopper circulate through the flow path through the grain feeding section, the milling section, and back to the hopper. The milling pressure applied in the milling section causes a frictional effect between the grains, and the milling operation is performed in accordance with the magnitude of the applied force.In the past, the means for applying pressure to the grains , almost without exception, this is done by adjusting the resistor installed in the milling chamber, and the pressure is concentrated in the milling chamber where the resistor is located. When milling so-called difficult-to-mill rice, such as over-dried rice, the appropriateness of pressure adjustment for these grains does not directly have a large effect on milling performance (yield, broken rice ratio, milling speed, etc.). It is important to set the most appropriate milling pressure according to conditions such as the quality, input amount, circulation speed, etc., but it is not possible to always set and maintain the optimal milling pressure simply by adjusting the resistor. This was extremely difficult, and this point had become a major issue in operating the circulating rice mill efficiently.

This invention was developed to address the above-mentioned problems, and its structure and operation will be specifically explained below with reference to drawings of embodiments. Before that, for convenience of explanation,
The general operating procedure of the circulating rice milling machine used as an example will be briefly described.

In the drawing, (1) is the rice milling machine cabinet, (2) is the hopper, (3) is the supply port shutter, (4) is the sorting room, (5) is the grain feeding room, and (6) is the grain feeding roll. , (7) is a rice bran net.

(8) is the pumping chamber, (9) is the resistor, αO is the perfusion box, αη
is the input pulley, (2) is the suction fan, 0 is the suction duct,
α→ is a rice husk suction pipe, and 0 o'clock is a cyclone.The grains introduced into the hopper (2) are first transferred to the sorting room (4) from the grain drop port (2a) at the bottom of the hopper (2). falling j
~.

This is rice husk and straw waste that is larger than the mesh of the rice bran removal net (7).

Contaminants such as branches and stems are sorted and separated from the grains, and the contaminants are sucked into the suction pipe 04) with the force of a suction fan and discharged to the cyclone 00 outside the machine, and only the grains are sent to the lower grain feeding chamber. (5). In the grain feeding room (5), there is a grain feeding row y that penetrates into the room.
While the grains are pushed to the front milling chamber (8) by the rotation of v (6), they are milled with a predetermined milling pressure by adjusting the pressure of the resistor (9), and then passed through the upper reflux box OQ and sent again. By repeating the operation of returning the rice to the hopper (2), the degree of polishing is gradually improved, and the rice bran produced during polishing passes through the mesh of the rice bran removal net (7) by the action of the suction fan Q4 and is transferred to the cyclone αO outside the machine. It is designed to be ejected.

The present invention provides a grain feeding chamber (5) in the above-mentioned circulating rice milling machine.
From the hopper (2) through the pumping chamber (8) and the recirculation box Q1.
) is connected to the grain distribution channel Q, which is mainly connected to the milling chamber (8
) A first pumping part (Pl) which performs pumping operation by the pressurizing force of the upper resistor (9), and one part of the peripheral wall (]Oa) of the reflux box Q□ above the first pumping part cP1). It is characterized by continuously providing a second milling section (P2) which is tilted in the opposite direction and narrowed so that the milling operation is performed only by grain-to-grain friction.

In this case, the first milling section [F]) is basically the same as the conventional circulation type rice milling machine. It has a structure in which a resistor (9) that can be swung is pivotally attached.
Regarding the second pumping part 2), the peripheral wall α)a of the reflux box 00
) at the same angle as the front wall (2C) of the hopper (2) at the part that connects to the bottom wall (2b) of the hopper (2), or tilt forward at a deeper angle ( 8° to 20° with respect to the vertical direction, and narrows at the top.

Since the circulating rice milling machine according to the present invention has the above structure, the grains sent from the grain feeding chamber (5) to the forward milling chamber (8) by the rotation of the grain feeding row/l/(a) are First, the pumping sperm chamber (8
), the first pressure is set by the resistor (9).
After the next pumping operation is performed, it is sent to the upper reflux box α1, but unlike the conventional case, the peripheral wall Q of the reflux box QO
Because part of the hopper (oa) is tilted or constricted in the opposite direction, a second milling operation is performed only by the friction between the grains, and then the hopper (
2) By repeating the reflux operation, the degree of polishing of the grains is increased. In addition, in the case of the present invention, the peripheral wall 00 of the reflux box frame
Unlike in the past, point a) does not curve in an arc from the top of the milling chamber (8) toward the grain falling port (2a) at the bottom of the hopper (2), so it is located above the milling chamber (8). The amount of grain is small, and the load when pushing the grain upward is also small.
The power can be effectively used as power for pumping.

As described above, if the circulating rice milling machine of the present invention is used for grain milling work, the pressurized grain flow path from the grain feeding chamber to the milling chamber and circulation box to the hopper will be improved. Since two different types of milling operations are performed, it is now possible to perform the milling state with concentrated pressure using a resistor over a wide range, and therefore, no excessive force is applied to the grains. Since the resistance can be adjusted extremely easily, the balance of the milling pressure and the circulation state are improved, and the occurrence of broken rice is prevented.

It exhibits an excellent effect that can dramatically improve the ability of pumping.

[Brief explanation of the drawing]

The drawing is a central longitudinal cross-sectional view showing an example of a specific implementation structure of the circulating rice milling machine according to the present invention. (1)...cabinet, (2)...hopper, (2
a)...Grain fall opening, (2b)...Bottom wall, (2C)
...Front wall, (3)...Feeding port shutter, (4)...Sorting room, (5)...Grain feeding room, (6)...Grain feeding roll, (7
)・−Blank removal net, (8)・・Sperm cell, (9)・・Resistance body,
On...Recirculation box, (10a)...Surrounding wall, 0σ...Input pulley, 0■...Suction fan, α...Suction duct, 0→
...Rice husk suction pipe, 0υ...Cyclone, Q...Flow path, [F])...1st milling section.

Claims (1)

[Claims] A first milling section that performs milling operation mainly by the pressurizing force of a resistor at the upper part of the milling chamber is provided in the flow path for grains that connects from the grain feeding chamber to the hopper through the milling chamber and the circulation box, and a first milling section above the first milling section. A circulating rice milling machine characterized in that a part of the peripheral wall of the reflux box is tilted or constricted in the opposite direction, and a second milling section is continuously provided to perform milling operation only by grain-to-grain friction.