JPH0318493B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a vertical circulation rice mill.

(Prior art) A conventionally known circulating rice mill has a horizontal grain feeding spiral installed horizontally in a circulation tank, a bran removing cylinder is provided at the bottom of the horizontal grain feeding spiral, and the pressure at the tip of the horizontal grain feeding spiral is reduced. A resistance valve is installed in the chamber to allow circulation as shown by the arrow to remove rice bran and perform circulation elutriation.
(See Publication No. 1118).

In addition, the well-known Japanese Patent Publication No. 60-38180 discloses a vertical shaft whitening roll, a bran removal cylinder surrounding the outer periphery of the whitening roll, and a grain inflow port formed at the upper end portion of the bran removal cylinder, A rice milling device is described that includes a grain outlet formed at the lower end of the rice bran removing cylinder, and a vertically movable outflow control valve provided below the outlet.

(Problem to be Solved by the Invention) The former adjustment of the degree of circulation grinding is done by adjusting the resistance of a resistance valve, but it is not very effective because there is no stirring in the pressure chamber at the tip of the horizontal grain feeding spiral.

The latter outflow control valve does not operate in tightly packed grains.

(Means for Solving the Problem) Therefore, the present invention includes a vertically cylindrical circulation tank 5, a downward feed grain spiral 7 with a vertical axis provided in the center of the circulation tank 5, and a vertical milling roll 4 with a vertical axis. , a shell tube 14 surrounding the outer periphery of the downward feeding grain spiral 7, a bran removal tube 15 surrounding the outer periphery of the milling roll 4, and a circulation tank 5 formed at the upper end portion of the grain feeding tube 14. Consisting of an inlet 16 for grains and an outlet 17 for flowing out the grains into the circulation tank 5 formed at the lower end of the bran removal tube 15, the lower end of the whitening roll 4 is provided as it goes downward. A tapered portion 22 having a small diameter is formed, and a funnel-shaped outflow control valve 18 that is movable up and down is provided at the lower end of the bran removing cylinder 15.
2 and a funnel-shaped outflow control valve 18, and the outflow control valve 18 is moved up and down to open the outflow port 17.
This is a vertical circulation type rice milling machine that can adjust the width of the mill.

(Embodiment) A specific embodiment of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a motor case provided below, which is formed to be placed on the floor. A motor 2 is installed inside a motor case 1. A rotating shaft 3 of the motor 2 projects vertically upward, and a vertical rice polishing roll 4 is attached to the outer periphery of the rotating shaft 3. A circulation tank 5 formed of a thin iron plate and having a substantially rectangular cross section is integrally connected to the upper part of the motor case 1. The uppermost end 6 of the rotating shaft 3 is located in the circulation tank 5 lower than the upper end of the circulation tank 5. A downward feeding spiral 7 is provided at the upper end of the rotating shaft 3. The downward feeding grain feeding spiral 7 is the rotating shaft 3
It is installed by inserting it from above. The vertical shaft rice milling roll 4 is provided below the downward grain feeding spiral 7. A protrusion 8 is formed on the outer peripheral surface of the vertical rice polishing roll 4. The protrusion 8 may be inclined.
A small diameter part 10 is formed at the lower part of the vertical axis rice milling roll 4, a large diameter part 11 is provided at the lower part of the small diameter part 10, and a horizontal circular bottom plate 12 is provided at the lower part of the large diameter part 11. The horizontal circular bottom plate 12 is fixed to the rotating shaft 3 and rotates together with the rotating shaft 3. The downward feeding grain feeding spiral 7
A grain feeding chamber 9 is formed on the outer periphery of the rice milling roll 4, and a rice polishing chamber 13 is formed on the outer periphery of the vertical rice milling roll 4. The outer periphery of the downward feeding grain feeding spiral 7 is concentrically surrounded by a grain feeding tube 14, and the outer periphery of the vertical axis rice milling roll 4 is concentrically surrounded by a bran removing tube 1.
Surround with 5. 16 is an inlet formed on the outer periphery of the uppermost end 6 of the rotating shaft 3; 17 is an outlet formed on the outer periphery of the small diameter portion 10; an outflow control valve 18 is provided around the small diameter portion 10; An outflow port 17 is formed between the outer surface of the valve 10 and the inner surface of the outflow control valve 18. The upper end 19 of the outflow control valve 18 is fitted into the outer peripheral surface of the lower end 20 of the bran removing cylinder 15 so as to be able to move up and down.

Therefore, the lower end of the bran removal cylinder 15 is formed with an outer circumferential surface having the same outer diameter from beginning to end, and the outflow amount regulating valve 18
The upper end 19 is also formed on the inner surface with the same inner diameter from beginning to end.

The outflow amount regulating valve 18 has a narrowed center portion having a small diameter, and forms a narrowed portion 21.
faces the small diameter portion 10.

A tapered portion 22 whose diameter gradually decreases toward the bottom is formed between the vertical axis rice milling roll 4 and the small diameter portion 10, and the small diameter portion 10 is connected to the lower end of the tapered portion 22. Outflow control valve 1
8 moves upward and the narrowing part 21 approaches the tapered part 22, narrowing the outlet 17 between them. Conversely, when the outflow control valve 18 moves downward and the space between the narrowed part 21 and the tapered part 22 becomes wider, the outflow port 17 becomes wider.

A connecting rod 23 protruding in the left-right direction is provided at the lower end of the outflow amount regulating valve 18, and the tip of a lever rod 24 is engaged with the outer end of the connecting rod 23. An intermediate position in the length direction of the lever rod 24 is fixed to the circulation tank 5 side by a shaft 26, and a weight 25 is provided at the tip.
In addition, 27 is a discharge gutter, and 28 is an on-off valve.

(effect) Next, we will discuss the effect.

Since the present invention has the above configuration, when the weight 25 is moved toward the shaft 26, the weight of the weight 25 does not act on the connecting rod 23, so the outflow amount adjustment that is attached via the connecting rod 23 The valve 18 moves downward by its weight, widening the space between the narrowed part 21 and the tapered part 22. In this state, when brown rice is introduced from the upper part of the circulation tank 5 and the motor 2 is energized, the downward feeding grain feeding spiral 7 and the vertical axis rice milling roll 4 rotate, allowing the grain to flow in from the inlet 16, and the downward feeding grain feeding spiral rotates. The rice is sent downward by the feeding action of 7 and flows into the rice polishing chamber 13. However, the outflow control valve 1 below the rice polishing chamber 13
8 is moved downward as described above and the outlet 17
Since the rice grains are widened, the rice grains are fed under low pressure into the rice milling chamber 13, and the low pressure rice grains are therefore stirred by the protrusions 8 of the vertical rice milling rolls 4. to enable low-pressure ejaculation.
At this time, the separated bran generated is ejected from the bran removal cylinder 15 into the bran chamber 29, sucked by the suction fan 30, and made to flow into the bran box 31. The milled grain is sent to outlet 1
7, rises through the rising chambers 32 on the left and right sides, flows in through the inlet 16 again, and repeats this a desired number of times to complete the ejaculation.

Since the outlet 17 has a wide opening, even if the grain is sent downward by the downward feed spiral 7, the rice is milled under less strong pressure. Therefore, it is possible to perform low pressure milling and reduce the amount of broken rice. You can get good quality rice.

Next, when the weight 25 is positioned away from the shaft 26, the weight of the weight 25 causes the outflow control valve to
8 is moved upward, the outlet 17 between the small diameter section 10 and the narrowing section 21 is narrowed, and therefore, when the grain is fed downward from the downward feeding spiral 7, the rice is milled under high pressure in the milling chamber 13, and in this way. The flow rate and pressure can be reliably adjusted simply by adjusting the weight 25.

(Effects) The present invention includes a vertically cylindrical circulation tank 5, a vertical downward feeding grain feeding spiral 7 and a vertical axis milling roll 4 provided in the center of the circulation tank 5, and the vertical shaft milling roll 4. a grain feeding cylinder 14 surrounding the outer periphery of the milling roll 7; a bran removal cylinder 15 surrounding the outer periphery of the milling roll 4; and a grain inflow port 16 of the circulation tank 5 formed at the upper end portion of the grain feeding cylinder 14. , an outlet 17 for flowing out the grains into the circulation tank 5 formed at the lower end of the bran removing cylinder 15, and a tapered part 22 at the lower end of the whitening roll 4 that becomes smaller in diameter as it goes downwards. A funnel-shaped outflow control valve 1 is provided at the lower end of the bran removal cylinder 15 and is movable up and down.
8, and the outlet 17 is connected to the tapered part 22.
and a funnel-shaped outflow control valve 18, and the outflow control valve 18 is moved up and down to adjust the outflow port 17 to be wide or narrow. A tapered part 22 is formed at the lower end of the roll 4, and the diameter becomes smaller as it goes downward.
A funnel-shaped outflow control valve 18 that is movable up and down is provided at the lower end of the bran removing cylinder 15, and the outflow port 1
7 is formed between the taper part 22 and the funnel-shaped outflow control valve 18, so that the taper part 2
A load can be applied to the rice milling chamber 13 by narrowing the funnel-shaped gap between the rice milling chamber 2 and the outflow control valve 18.

(b) Since the funnel-shaped outflow control valve 18 is moved up and down to adjust the width of the outflow port 17, the circulating rice mill can operate smoothly even if it is densely packed with grains.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway longitudinal sectional front view of the present invention, and FIG.
The figure is a vertical front view of the present invention, FIG. 3 is a vertical side view when the outlet is narrowed, and FIG. 4 is a vertical side view when the outlet is widened. Explanation of symbols, 1...Motor case, 2...Motor, 3...Rotating shaft, 4...Vertical shaft rice milling roll,
5...Circulation tank, 6...Top end, 7...Downward grain feeding spiral, 8...Protrusion, 9...Grain feeding chamber, 10...
...Small diameter part, 11...Large diameter part, 12...Horizontal circular bottom plate, 13...Rice milling room, 14...Grain feeding cylinder, 15...
Bran removal tube, 16... Inlet, 17... Outlet, 18
...outflow control valve, 19...upper end, 20...lower end, 21...narrowed part, 22...tapered part, 23
... Connecting rod, 24 ... Lever rod, 25 ... Weight, 2
6...Shaft, 27...Discharge gutter, 28...Opening/closing valve, 2
9... Rice bran chamber, 30... Suction fan, 31... Rice bran box, 32... Circulation ascending path.

Claims (1)

[Claims] 1 A vertically cylindrical circulation tank 5, a downwardly feeding grain spiral 7 with a vertical axis provided in the center of the circulation tank 5, a vertical milling roll 4, and the downwardly feeding grain spiral 7.
a grain feeding cylinder 14 surrounding the outer periphery of the milling roll 4; a bran removing cylinder 15 surrounding the outer periphery of the milling roll 4;
It consists of an inlet 16 for grains into the circulation tank 5 formed at the upper end of the bran removing cylinder 15, and an outlet 17 for flowing out the grains into the circulation tank 5 formed at the lower end of the bran removal cylinder 15. A tapered part 22 is formed at the lower end of the whitening roll 4, the diameter of which decreases as it goes downwards, and a funnel-shaped outflow control valve 18 that is movable up and down is provided at the lower end of the bran removal cylinder 15. The outlet 17 is formed between the tapered part 22 and a funnel-shaped outflow control valve 18, and the outflow control valve 18 is moved up and down to adjust the outflow port 17 to be wide or narrow.