JPH0822388B2 - Vertical type friction cutting type grain mill - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a grain from below a grain mill to mill the grain,
The present invention relates to a vertical-type friction cutting type grain mill that discharges from above.

[Conventional technology]

A conventional vertical axis friction cutting type grain refiner will be described with reference to FIGS. 4 and 5. Reference numeral 37 is a vertical shaft type friction cutting type grain refiner, in which a spiral rotator 40 is provided at the bottom of a main shaft 39 rotatably provided in an upright standing porous wall bran-removing white barrel 38, and a stirring protrusion 41 is provided at the top. The rubbed fine grain trochanters 42 are respectively mounted. Grain is a grain-feeding gutter
It is supplied to the spiral rotator 40 from a grain supply unit 45 provided on one side wall of the machine frame 44 via 43, and is then transported to the grain refinery chamber 46 by the spiral rotator 40. The grains are then rubbed in the milling chamber 46
The grain is refined by the polishing action generated by the rotation of 42, and the refined grain is discharged from the discharge port 47 through the discharge gutter 48 to the outside of the machine.

However, in the conventional vertical shaft type friction milling machine as described above, as shown in FIG. 5, the stirring protrusion 41 is provided on the circumferential portion where the distance from the shaft center is the largest (l ₁ ). The distance from the shaft center is the smallest on the rear side of the stirring protrusion 41 in the rotation direction (l ₂ )
The difference in rice grain density between the front (A) and the rear (B) in the rotation direction of the stirring protrusion 41 is extremely large. In other words, since the friction grain trochanter 42 is rotating in the direction of the arrow in the figure, the polishing pressure becomes extremely large at the point A in the grain chamber and the grains become dense, and the polishing pressure at the point B is It becomes extremely small and the grains become sparse. Therefore, the grain at the point B tends to be fed up along the agitation protrusion and discharged in a state of insufficient polishing, which causes a problem that uneven graining occurs.

[Problems to be Solved by the Invention]

The present invention solves the above problems and provides a vertical type friction cutting type grain refiner capable of adjusting the imbalance of the pressure in the grain grain chamber and preventing the occurrence of uneven roaring. Subject.

[Means for solving the problem]

In order to achieve this object, the present invention has the following configuration.

A spiral trochanter and a fine grain trowel with a stirring projection and a blowhole are mounted on a main shaft rotatably installed in the standing multi-walled fine bran removal grain cylinder and a fine-grained white rice bran removal grain and fine grain transfer. In the hard axis type friction cutting type grain cultivator in which the lower end of the grain refining chamber formed with a child as a main part is connected to the grain supply unit, and the upper end is connected to the grain discharge unit, respectively, The stirring protrusion is provided between the peripheral surface portion that is formed eccentrically and has the smallest distance from the rotation center and the peripheral surface portion that has the largest distance from the rotation center, and the rear side in the rotation direction of the stirring protrusion In addition, the blowout port is provided on the peripheral surface portion having the largest distance from the rotation center.

[Action]

The grain supplied to the spiral trochanter from the grain supply unit of the vertical-type friction-cutting type grain refiner is sent by the spiral trochanter, and the main part is the perforated-wall debulking refined white barrel and the grain trochanter. It is refined in the grain room. The milled grain is discharged from the grain discharge section and sent to the next step. At that time, the rice grains are agitated by the agitating protrusions provided on the peripheral surface that is the smallest distance from the center of rotation, but the polishing chamber (A) on the front side in the rotational direction of the agitating protrusions is relatively wide, so it is extremely The rice grain density does not increase, while the polishing chamber (B) on the rear side of the stirring protrusion in the rotation direction is at a large distance from the center of rotation, and therefore the rice grain density does not decrease sharply and moderate polishing pressure is applied. Is retained.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front central longitudinal cross-sectional view of a vertical-axis friction-cutting grain mill, and FIG. 2 is a cross-sectional view of a friction grain trochanter.

Reference numeral 1 is a vertical shaft type friction milling machine, in which a spiral rotator 4 is provided at the bottom of a main shaft 3 rotatably provided in an upright standing porous wall bran-removing white barrel 2 and a stirring projection 36 is provided at the top. Each of the provided friction grain trochanters 5 is axially mounted. And, the porous wall bran removal white tube 2
The lower part of the grain refining chamber 6 having the frictional grain refinement trochanter 5 as a main part is connected to the grain supply part 7, and the upper part is connected to the grain discharge part 8. The motor pulley 10 of the main motor 9 and the pulley 11 of the main shaft 3 are connected by a V belt 12.

The grain discharging unit 8 is provided with a resistance plate 14 connected to an automatic resistance adjusting device 13 that regulates the grains discharged from the grain discharging unit 8. The resistance plate 14 is connected to a tooth shaft 16 via a lever 15, and the tooth shaft 16 is interlockingly connected to a forward / reverse rotation electric motor 17. When the tooth shaft 16 is horizontally moved by the forward / reverse rotation electric motor 17, the lever 15 is rotated around the resistance plate shaft 18 and the resistance plate 14 is moved far and near with respect to the grain discharging unit 8. Downflow gutter 19 connected to the grain discharge part 8
And a drain gutter 20 is connected to the flow-down gutter 19.

The feed hopper 21 is connected to the grain feeder 22 and the spiral 23
A pulley 25 attached to a conveyor shaft 24 around which the coil is wound and a pulley 27 of an electric motor 26 are connected by a V belt 28, and the grain supply device 22 communicates with the grain supply unit 7.

A large number of ventilation holes 29 are formed in the main shaft 3, and the upper end opening of the main shaft 3 is connected to the blower device 30. Reference numeral 31 is a slit-shaped blowhole provided in the longitudinal direction of the friction grain trochanter 5 and a bran removal chamber 32 provided around the perforated wall bran-cleaning white tube 2
Is connected to a cyclone (not shown) or the like via the bran-exiting duct 33.

As shown in FIG. ₂ , a jet port 31 is provided on the side (l ₁ > l ₂ ) where the distance from the axis is large with respect to the stirring protrusion 36 of the eccentric friction grain trochanter 5.

Next, the operation of the above configuration will be described. The grain is sent to the grain supply device 22 via the supply hopper 21, and by driving the main electric motor 9 and the electric motor 26, respectively,
It is supplied to the spiral trochanter 4 by the spiral body 23, and is pumped to the grain mill 6 by the spiral trochanter 4. Then, the grain is refined in the grain chamber 6 by the polishing action generated by the rotation of the friction grain trochanter 5. At that time, as shown in FIG. ₂ , the jet port 31 is provided on the side where the distance from the shaft center is large with respect to the stirring protrusion 36 (l ₁ > l ₂ ), so as to rotate in the arrow direction in FIG. 2, that is, to rotate right. The rice grains in the grain mill 6 are agitated by the stirring protrusions provided on the peripheral surface that is the smallest distance from the center of rotation, and the polishing chamber (A) on the front side in the rotation direction of the stirring protrusions (A).
Is relatively wide, the rice grain density does not become extremely high. On the other hand, the polishing chamber (B) on the rear side of the stirring protrusion in the rotation direction is large in distance from the center of rotation, and therefore the rice grain density rapidly decreases. Without maintaining a moderate polishing pressure, the pressure conditions at points A and B of the grain chamber 6 are balanced,
The grain at the point does not become extremely sparse. And
The bran removing effect is actively performed by the bran removing air blown from the blower 30 through the ventilation port 29 and the blowout port 31, and dust such as bran produced by the milling action in the grain chamber 6 is removed by the porous wall removing bran polishing white tube 2 Is discharged to the bran removing chamber 32 from the through hole and is sent from the bran removing duct 33 to a bran collecting device such as a cyclone (not shown).

The refined grain reaches the grain discharge unit 8, the outflow is suppressed by the resistance plate 14 of the automatic resistance adjusting device 13, and the accuracy of the roasting is adjusted by changing the suppression of the resistance plate 14. Then, the grain flows out against the resistance plate 14 and is discharged to the outside of the machine through the flow-down gutter 19 and the discharge gutter 20.

Incidentally, what is shown in FIG. 3 is another embodiment of the present invention,
Stirring protrusion 36A is formed on the upper part of the concentric friction grain trochanter 5
And the jet port 31A, and the stirring projections 36B and the jet port 31B are alternately provided on the lower portion. The grain fed by the spiral rotator 4 is first subjected to the polishing action by the stirring protrusion 36B, and then subjected to the polishing action by the stirring protrusion 36A to be refined and discharged outside the machine. Since the stirring protrusions 36A and the stirring protrusions 36B are provided alternately, the unsmelted grains that are fed along the stirring protrusions 36B are diffused when they pass the tip of the stirring protrusions 36B. Then, the stirring protrusion 36A does not cause the unsmelted grain to be discharged to the outside of the machine.

〔The invention's effect〕

As described above, according to the vertical axis friction cutting type grain refiner in the present invention, the grain trochanter is formed eccentrically,
A stirring protrusion is provided between the peripheral surface portion that has the smallest distance from the rotation center and the peripheral surface portion that has the largest distance from the rotation center. Since the blowholes were provided on the peripheral surface where the distance between the two was the largest, the rice grain density was high due to the agitation protrusions, while the front side of the agitation protrusions had a moderate density due to the relatively large grain chamber (A). Conventionally, the rear side of the agitation protrusion, where the rice grain density was sparse, was not extremely sparse due to the relatively narrow grain chamber (B), and the pressure in the grain chamber was balanced, so that the grains that were not milled were agitated. It will not be sent along the protrusions and will not be discharged as it is.

[Brief description of drawings]

FIG. 1 is a front center vertical cross-sectional view of a vertical-type friction-cutting type grain mill according to the present invention, FIG. 2 is a cross-sectional view of a friction grain trochanter, and FIG. 3 shows another embodiment. Side sectional views, FIG. 4 and FIG. 5 are views showing a conventional example. 1 ... Vertical-type friction-cutting type grain milling machine, 2 ... Perforated wall removing bran mill, 3 ... spindle, 4 ... spiral trochanter, 5 ... friction grain trochanter, 6 ... graining chamber , 7 ... Grain supply unit, 8 ... Grain discharge unit, 9 ... Main electric motor, 10 ... Motor pulley, 11 ...
Pulley, 12 …… V belt, 13 …… Automatic resistance adjustment device,
14 …… resistor plate, 15 …… lever, 16 …… tooth shaft, 17 …… forward / reverse rotation motor, 18 …… resistor plate shaft, 19 …… downstream gutter, 20 …… discharging gutter, 21 …… supply hopper, 22 …… Grain feeder, 23…
… Helix, 24 …… Conveyor shaft, 25 …… Pulley, 26 ……
Electric motor, 27 …… Pulley, 28 …… V-belt, 29 …… Ventilation port, 30 …… Blower, 31 …… Blowhole, 32 …… Bran chamber, 33
…… Debranching duct, 34 …… Ring body, 35 …… Lid body, 36 ……
Stirring protrusion, 37 …… Vertical type friction cutting type grain mill, 38 …… Perforated wall removal bran refiner, 39 …… Spindle, 40 …… Spiral trochanter, 41 ……
Stirring protrusion, 42 …… Fried grain trochanter, 43 …… Grain trough, 44 ……
Machine frame, 45 …… Grain supply unit, 46 …… Grain chamber, 47 …… Discharge port, 48 …… Discharge gutter.

Claims (1)

[Claims] 1. A multi-walled bran-removing mill with a multi-walled wall, in which a spiral trochanter and a fine-grained trochanter having a stirring projection and a spout are axially mounted on a main shaft rotatably provided in a standing white multi-wall bran At the lower end of the grain chamber formed by the cylinder and the grain trochanter as the main part, to the grain supply unit,
In a hard-axis friction-cutting type grain refiner in which the upper end is connected to the grain discharge part, respectively, the grain trochanter is formed eccentrically and rotates with the peripheral surface part that has the smallest distance from the rotation center. The stirring protrusion is provided between the stirring surface and the peripheral surface portion having the largest distance from the center, and the stirring protrusion is on the rear side in the rotation direction,
Further, the hard axis type friction cutting type grain cultivator is characterized in that the blowout port is provided on the peripheral surface portion having the largest distance from the rotation center.