JP2543079Y2 - Rice milling machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice mill for processing brown rice into white rice.

[0002]

2. Description of the Related Art A conventional rice milling machine generally has a structure as shown in FIG. In FIG.
Inside, a feed roll 42 and a refining roll 43 are disposed, and at the outlet 44 of the refining cylinder 41, a regulating plate 45 for regulating the cross-sectional area of the passage is provided. It is configured to keep the polishing accuracy constant.

When the feed roll 42 and the whitening roll 43 are driven to rotate by a motor 47 and brown rice is put into the whitening cylinder 41 from above,
The brown rice is pushed into the regulating plate 45 by the feed roll 42,
A milling roll that is rotationally driven with the net 48 inside the milling cylinder 41
The white rice that has been polished and milled between 43 is discharged from the exit 44. Here, when the urging force of the spring 46 is increased, the internal pressure of the whitening cylinder 41 increases and the grinding accuracy increases, and when the urging force is reduced, the internal pressure decreases and the polishing accuracy decreases.

However, in the above configuration, in the initial stage of operation, when the pressure in the whitening cylinder 41 becomes high, the regulating plate 45 is pushed immediately to open the outlet 44, so that the brown rice that has been initially charged is completely removed. There was a problem that it was paid out before the whitening, and it was necessary to perform the whitening again.

Therefore, as shown in FIG. 7, an opening regulating member 53 is provided which fits on the inner periphery of a white rice outlet forming member 52 disposed at the outlet end of the polishing cylinder 51, and the outer periphery thereof is arranged in the axial direction. Formed on a cylindrical outer peripheral surface 54 having an appropriate width, and at the beginning of operation or at the end of refining, supply of brown rice is stopped in a state where the space between the net 56 of the refining cylinder 51 and the refining roll 55 is filled with brown rice for a predetermined time. By rotating the whitening roll 55, even if the opening degree regulating member 53 is slightly displaced in the axial direction by the pressure in the whitening cylinder 51 during its operation, it is possible to reliably prevent the unwhitened rice from leaking out. Thus, there has been proposed a rice mill configured to discharge completely milled white rice even at the beginning of operation or at the end of milling. In FIG. 7, reference numeral 59 denotes an operation shaft of the opening degree regulating member 53, which is urged in a direction to close the white rice outlet as shown by a white arrow, and the opening degree regulating member 53 is opposed to this urging force. By moving downward in the figure, the polished rice is discharged to the casing 60 as shown by the dashed arrow, and is discharged from the casing 60 to the outside of the rice polishing machine via a chute (not shown).

[0006]

During operation for a long time, bran adheres and grows on the inner peripheral surface of the casing 60, particularly at a position B below the white rice outlet forming member 52, and adheres and absorbs moisture. The bran lump is formed by the casing
If it comes off from the inner surface of 60, there is a problem that it will be paid out together with white rice.

An object of the present invention is to provide a rice milling machine capable of avoiding the above-mentioned situation in which rice bran is mixed with white rice.

[0008]

According to the present invention, a rice mill is provided with a white rice outlet forming member provided at one end of a polishing cylinder provided with a polishing roll along the axial direction. An opening regulating member that has an appropriate width in the direction and rotates together with the milling roll and moves in the axial direction of the milling cylinder to adjust the opening of the milled rice outlet is provided. A casing for receiving the white rice passing through the white rice outlet formed between the members is provided, and a scraper whose tip extends near the inner peripheral surface of the casing is provided at the bottom of the opening degree regulating member. And

[0009]

According to this structure, the bran adhering to the casing is not scraped and grown by the scraper each time, and the scraped bran is mixed with the white rice and discharged from the casing.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In FIG. 3, reference numeral 1 denotes a main body casing, which is formed by fitting and connecting an upper casing 2, a whitening cylinder 3, an intermediate casing 4, and a lower bearing casing 5 in order from the upper part to the lower part. They are configured so that their axes match. A screw feeder 6 for supplying brown rice is connected to an opening formed on one upper side of the upper casing 2.
7 is a hopper for feeding brown rice, and 8 is a drive motor.

Reference numeral 9 denotes a rotary shaft composed of a hollow shaft disposed at the center of the upper casing 2, the whitening cylinder 3, and the intermediate casing 4 at the center thereof.
The feed roll 10 is fitted and fitted almost correspondingly to the inside, and the refinement roll 11 is fitted and fitted substantially corresponding to the refined cylinder portion 3. The feed roll 10 and the whitening roll 11 are connected to each other by a connecting pin 12, and a position near the lower end of the whitening roll 11 is circumferentially engaged with the rotating shaft 9 by a key 13.

In the whitening cylinder 3, a net 17 is provided at an appropriate distance from the outer periphery of the whitening roll 11.
An outlet 18 for bran generated during rice polishing is opened on one side of the outer periphery of the lower part of the rice. Further, a white rice outlet forming member 19 is disposed between the lower end of the whitening cylinder 3 and the upper end of the intermediate casing 4. The inner periphery of the white rice outlet forming member 19 is formed as a sharp edge, and is fitted to the outer peripheral surface of the opening regulating member 15 having a suitable width in the vertical direction.

On one side of the upper end of the intermediate casing 4, a white rice discharge port 20 is formed, and a chute 21 is attached.
Further, a receiving flange 22 for receiving the white rice dropped from the white rice outlet forming member 19 and guiding the white rice to the chute 21 is protrudingly provided on the rotating shaft 9. A support shaft 23 rotatably supported by a pair of upper and lower bearings 24 is provided at an intermediate portion of the intermediate casing 4, and a lower end portion of the rotary shaft 9 is fitted and fixed. Intermediate casing 4
A torque sensor 25 is disposed in the lower part of the
a is slidably fitted to the support shaft 23 only in the axial direction.

A drive shaft 27 rotatably supported by a pair of upper and lower bearings 26 is provided in the lower bearing casing 5, and the other end shaft 25b of the torque sensor 25 is slid only in the axial direction at the upper end thereof. A drive pulley 28 is fixed to a lower end of a drive shaft 27 that is movably fitted and protrudes downward. The drive pulley 28 is configured to be rotatable by a motor (not shown) via a drive belt.

An opening adjusting shaft 29 is inserted into the hollow rotating shaft 9, and the lower end thereof and the opening regulating member 15 are connected by a connecting member 30 penetrating an elongated hole 31 formed in the rotating shaft 9. ing.
The upper end of the opening adjustment shaft 29 is rotatably engaged with the upper surface of an engaging member 34 supported on a lifting member 32 via a spring 33. The elevating member 32 is configured to be able to move up and down by elevating means 35, and the elevating means 35 is driven and controlled by control means 36 to which an output signal from the torque sensor 25 is input.

As shown in FIG. 4, the elevating means 35 comprises a feed screw shaft 38 which is rotationally driven by a drive motor 37, a movable nut body 39 screwed with the feed screw shaft 38, and a guide rod 40 thereof. The movable nut body 39 is connected to the lifting member 32.

According to the above configuration, brown rice is put into the upper casing 2 by the screw feeder 6 from the hopper 7 while the rotary shaft 9 is driven to rotate by the drive shaft 27 and the torque sensor 25 by the drive pulley 28. Then, the brown rice is pushed into the whitening cylinder 3 by the feed roll 10 and is whitened between the rotating whitening roll 11 and the net 17. In addition, the bran separated by the whitening treatment passes through the rotation shaft 9 and the through holes (not shown) formed in the whitening roll 11 through the net 17 through the net 17. The bran is discharged to the outside together with the airflow flowing toward the outlet 18. The polished white rice resists the urging force of the spring 33 due to the pressure of the brown rice fed into the space between the net 17 of the whitening cylinder 3 and the whitening roll 11 as shown in FIG.
As shown in (1), it is sequentially discharged from an annular passage formed between the outer periphery of the opening degree regulating member 15 depressed and the white rice outlet forming member 19, and is discharged from the white rice discharge port 20 through the chute 21 to the outside.

When the milling accuracy is higher than the set state, the load torque acting on the whitening roll 11 increases, and the output signal from the torque sensor 25 becomes larger than the set value. The lifting member 32 is lowered by the lifting / lowering means 35 by the command of the above, the rising urging force of the opening adjustment shaft 29 by the spring 33 is reduced, the opening restriction member 15 is lowered, the opening is increased, and the polishing accuracy is improved. Adjusted lower. Conversely, when the polishing accuracy is low, the output signal from the torque sensor 25 is too small, so the lifting member 32 is raised by the lifting means 35, the opening restriction member 15 is raised, and the opening is reduced. It becomes smaller and the grinding accuracy is adjusted higher. Thus, the milling accuracy is automatically controlled to the set one.

At the start of the operation, the supply of the brown rice is stopped when the upper casing 2 and the whitening cylinder 3 are filled with the brown rice, and the rotating shaft 9 is driven to rotate for a predetermined time in this state to perform the whitening processing. By doing so, since the outer peripheral surface of the opening degree regulating member 15 has a predetermined width in the vertical direction, unpolished rice does not flow out during the refining process, and white rice is discharged at the beginning of operation or at the end of refining. The completely milled white rice is discharged without returning unmilled rice discharged from the outlet 20 to re-milling and without complicatedly controlling the milling roll 11 and the opening regulating member 15. Is done. The state where rice is just filled can be detected by an output signal from the torque sensor 25.

Further, a scraper 16 as shown in FIG. 5 is fixed to the bottom of the opening degree regulating member 15 with a bolt 14.
The tip of the scraper 16 extends near the inner peripheral surface of the intermediate casing 4. Therefore, the scraper 16 rotates while moving up and down integrally with the opening regulating member 15 by raising and lowering the opening regulating member 15, and scrapes off the bran that adheres to the inner peripheral surface of the intermediate casing 4 and grows each time. Will be. The scraped-off bran mixes with the white rice and is discharged from the shoot 21 each time, thereby avoiding a situation where the bran mass is mixed with the white rice and discharged.

In the above embodiment, the scraper 16 is attached to the opening regulating member 15, but this is attached to the rotating shaft 9 and attached to the inner peripheral surface of the intermediate casing 4 as shown by the phantom line in FIG. The bran to be tried can be scraped off each time. However, in this case, since the scraper 16 does not move in the axial direction of the whitening cylinder portion 3 as in the previous embodiment, a long writing portion A is required at the tip to scrape off the same range of bran. .

[0022]

[Effect of the Invention] As described above, the rice milling machine of the present invention has a rice mill outlet forming member provided at one end of a rice milling cylinder provided with a milling roll along the axial direction. An opening regulating member that has an appropriate width in the direction and rotates together with the milling roll and moves in the axial direction of the milling cylinder to adjust the opening of the milled rice outlet is provided. A casing for receiving the white rice passing through the white rice outlet formed between the members is provided, and a scraper whose tip extends near the inner peripheral surface of the casing is provided at the bottom of the opening degree regulating member. The attached bran does not grow by being scraped off by the scraper each time, and it is possible to avoid a situation in which a large chunk of bran is mixed with white rice and discharged.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a main part showing a structure near a milling roll and an opening regulating material of a rice mill of the present invention.

FIG. 2 is a longitudinal sectional view of the apparatus during rice polishing.

FIG. 3 is a vertical sectional front view of the rice mill according to the embodiment of the present invention;

FIG. 4 is a side view of a drive mechanism of an opening degree regulating member.

FIG. 5 is a perspective view of a scraper of the same device.

FIG. 6 is a schematic configuration diagram of a conventional example.

FIG. 7 is a vertical sectional front view of a main part of another conventional example.

[Explanation of symbols]

 3 Refining cylinder part 4 Intermediate casing [casing] 11 Refining roll 15 Opening regulating member 19 White rice outlet forming member 16 Scraper

Claims (2)

(57) [Scope of request for utility model registration] 1. A white rice outlet forming member is provided at one end of a whitening cylinder in which a whitening roll is provided along the axial direction, and the whitening outlet forming member has an appropriate width in the axial direction of the whitening cylinder. An opening regulating member that rotates integrally and moves in the axial direction of the refining cylinder to adjust the opening of the white rice exit is provided, and the white rice exit formed between the white rice exit forming member and the opening regulating member is provided. A rice mill comprising a casing for receiving the passed white rice, and a scraper provided at the bottom of the opening regulating member with a tip extending near the inner peripheral surface of the casing. 2. A white rice outlet forming member is disposed at one end of a whitening cylinder in which a whitening roll is disposed along the axial direction, and has a suitable width in the axial direction of the whitening cylinder. An opening regulating member that rotates integrally and moves in the axial direction of the refining cylinder to adjust the opening of the white rice exit is provided, and the white rice exit formed between the white rice exit forming member and the opening regulating member is provided. A rice mill provided with a casing for receiving the passed white rice, a milling roll having a tip extending near the inner peripheral surface of the casing and a base end rotating integrally, and a scraper attached to a rotating shaft of the opening degree regulating member. Machine.