JPH07114968B2 - Hard axis rice mill - Google Patents

Description

The present invention relates to a vertical axis rice milling machine that supplies brown rice from the lower part of a whitening chamber to whiten it and discharges it from the upper part.

[Conventional technology]

In the conventional vertical axis type rice milling machine, when the whitening degree is increased during the polishing, the flow resistance of the rice grain is increased by the whitening degree adjusting device provided above the discharge port of the whitening chamber. In order to increase the resistance, the suppression force of the rice grains received on the spiral trochanter side from the whitening chamber increases, and therefore the rice grain pumping ability by the spiral trochanters decreases, which in turn lowers the processing ability of starch smelt. there were.

[Problems to be solved by the invention]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and provide a vertical type rice milling machine which can prevent the drop of the rice grain feeding ability due to the spiral rotator even if the bowling accuracy is increased.

[Means for solving problems]

A part of the polygonal cylinder standing upright in the box machine frame is used as a porous wall bran polishing white cylinder, a spiral rotator on a vertical shaft rotatably provided in the cylinder, and a white trochanter on the upper part of the spiral trochanter. The lower part of the whitening chamber mainly composed of the porous wall debranching whitening tube and the whitening trochanter is connected to the brown rice supply part, and the upper part is connected to the white rice discharging part. A vertical shaft type rice milling machine is constructed by concentrically connecting the screw conveyor shaft of the upper conveying device to the upper part of the milling trochanter. Then, the gap between the spiral blade of the spiral rotator and the cylinder in which the spiral rotator is installed is formed to be larger than the rice grain width and smaller than twice the width of the rice grain. Form 2 to 5 times.

[Work]

The rice grains supplied to the spiral trochanter from the brown rice supply unit of the vertical axis rice mill are pumped by the spiral trochanter and refined in the whitening chamber mainly composed of the porous wall-removing rice bran and the white trochanter. . The polished white rice is discharged from the white rice discharging section, further fed up by the screw conveyor and discharged to the outside of the machine. At that time, the gap between the spiral blade and the cylinder is larger than the width of the rice grain and smaller than twice the width, and the pitch of each spiral blade is formed to be 2 to 5 times the gap between the spiral blade and the cylinder. Rice grains are less likely to fall through the gap between the spiral blade and the cylinder, and the rice grains serve as resistance. Therefore, the pressure of the rice grains from above is reduced to prevent the lowering of the lifting ability of the spiral rotator.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings. First
FIG. 1 is a side sectional view of a vertical type rice milling machine embodying the present invention, FIG. 2 is an enlarged view thereof, and FIGS. 3 to 5 are views showing an upper conveying device.

Reference numeral 1 is a vertical shaft type rice milling machine, in which a spiral rotator 4 is provided at the bottom of a hollow main shaft 3 rotatably provided in an upright standing perforated vertical rice bran polishing tube 2 and a stirring projection 5 is provided at the top. The frictional white trochanters 6 are respectively mounted. The lower part of the whitening chamber 7 which mainly comprises the porous wall debranching whitening barrel 2 and the frictional whitening trochanter 6 is used as a brown rice supply port 8.
The upper part is connected to the white rice discharge port 9, respectively.

Further, the spiral wing of the spiral rotator 4 and the cylindrical body in which the spiral rotator 4 is installed
The gap A with 53 is formed to, for example, 3.5 to 4.5 mm, and each pitch gap B of the spiral blade 52 is formed to, for example, 15 to 22 mm.

Reference numeral 10 is a brown rice tank, and a bottom plate 11 under the tank is connected to the supply port 8 via a supply gutter 12. Motor stand 13
The pulley 47 of the motor 14 and the pulley 15 of the main shaft 3 mounted on the V belt are connected to the V belt 48. Pulley 16 and blower 17
The pulley (not shown) is connected with the V belt 18,
The bran outlet 19 of the blower 17 is connected to a cyclone 21 through a bran discharge pipe 20.
Have been contacted. Reference numeral 22 is an intake port, reference numeral 23 is a blowhole, and the bran removing chamber 24 is a blower through a bran removing duct (not shown).
I have contacted 17.

Reference numeral 25 denotes an upper conveyor, which fits the lower end of a hollow screw conveyor shaft 27, around which the spiral 26 is wound, with the upper end of the friction polishing trochanter 6 and connects it with a connecting pin 28.
Fit the upper end of the bearing 29 to the bearing 29. A connecting rod 30 is slidably fitted to the conveyor shaft 27, and the lower portion of the connecting rod 30 is connected to a resistance device 49 provided at the white rice discharge port 9 by a connecting pin 31. Resistance device
49 is composed of a resistance plate 32 and a cylindrical body 51 formed by winding a spiral body 50,
Further, reference numeral 33 is a slot-like void provided in the conveyor shaft 27, and reference numeral 34 is a buffer spring. The upper end of the connecting rod 30 is connected to the compression degree adjusting device 35. The upper end of the connecting rod 30 is fitted into the bearing 36, the bearing 36 is connected to the adjusting rod 38 via the supporting rod 37, and the reference numeral 39 is an adjusting handle attached to the tip of the adjusting rod 38.

A scraping blade 40 is provided on the upper end of the conveyor shaft 27, and the discharge gutter 42 is connected to the refined product discharge port 41 of the upper transport device 25. Discharge gutter 42
Is rotatably formed by the forward / reverse motor 43,
Is contacting the supply gutter 12 via the return gutter 45 and also the code
Reference numeral 46 is a window for checking the precision of rice grain.

Next, the operation of the above configuration will be described. When the motor 14 is driven, the brown rice in the brown rice tank 10 flows down the bottom plate 11 and is sent from the supply gutter 12 to the spiral rotator 4 through the supply port 8. The brown rice is pumped to the whitening chamber 7 by the spiral trochanter 4 and subjected to the polishing action generated by the rotation of the frictional whitening trochanter 6 to be refined. Then, the bran is sucked from the intake port 22 by the blower 17 and blown out from the jet port 23 to remove bran. Dust such as bran generated by the polishing action in the polishing chamber 7 is discharged to the bran chamber 24 through the through hole of the multi-walled bran removal unit 2 for porous wall, and the blower 17 and the bran outlet 1 from the bran duct (not shown).
9, It is sent to the cyclone 21 through the bran discharge pipe 20 and collected.

The polished rice reaches the white rice discharge port 9 and flows out against the resistance plate 32 while the resistance plate 32 suppresses the outflow. Then, the white rice is fed upward in the upper conveying device 25 by the spiral body 26 of the conveyor shaft 27, and the white rice reaching the upper end is promoted to be discharged by the scraping blade 40, and is discharged from the discharge gutter 42 via the refined product discharge port 41. It is discharged to the outside of the machine.

Immediately after the start of polishing, incompletely polished rice is discharged from the discharge gutter 42, so the forward / reverse rotation motor 43 is operated to reverse the discharge gutter 42 to the position indicated by the chain line to circulate the unpolished rice. In other words, the unpolished rice drops from the refined product discharge port 41 to the rice collecting trough 44, is sent from the supply gutter 12 to the brown rice supply port 8 via the return gutter 45, and is re-polished. Then, after confirming that the proper lapping accuracy has been reached after a certain period of time through the window 46 and the forward / reverse rotation motor 43 is operated to reverse the discharge gutter 42 to the position of the solid line, the white rice is discharged into the discharge gutter.
It is discharged from 42 to the outside of the aircraft.

Next, the operation of adjusting the accuracy of the hammer will be described. Pressure adjustment device 35
When the handle 39 is pushed down, the connecting rod 30 is pushed down via the bearing 36, and accordingly the resistance plate 32 is pushed down via the tubular body 51. Then, the pressure in the milling chamber 7 increases and the grinding accuracy is improved, and the polished rice having an appropriate grinding accuracy is transferred by the spiral body 50 of the resistance device 49, and further further by the spiral body 26 of the screw conveyor shaft 27. It At this time, the spiral body 50 wound around the cylindrical body 51 of the resistance device 49 promotes the upward feeding action and prevents the staying.

It should be noted that when the compression degree adjusting device 35 is operated as described above to increase the accuracy of grinding, the pressure in the polishing chamber 7 rises, and the pressure on the spiral trochanter 4 portion thereunder also rises. But spiral wings
The gap A between the 52 and the cylinder 53 is larger than the width of the rice grain and is 3.5.
Since it is formed to be ~ 4.5 mm, it is difficult for rice grains to drop from the gap A between the spiral blade 52 and the cylindrical body 53, and the rice grains are spiral rotator 4
It is the resistance of pressure from above to the section. Also spiral wings
Since each pitch gap B of 52 is formed to be relatively small at 15 to 22 mm, the number of gaps A between the spiral blade 52 and the cylindrical body 53 increases, and the pressure from above is applied to the lower part of the spiral rotator 4 part. It's difficult. Therefore, the rice grain lifting ability of the spiral rotator 4 does not significantly decrease due to the adjustment of the bowling precision.

Further, FIG. 6 shows another embodiment of the present invention, in which the upper portion of each spiral blade 52 is formed in a flat shape. This makes it difficult for rice grains to drop downward, and is effective in improving the lifting capacity of the spiral rotator 4.

〔The invention's effect〕

According to the vertical type rice milling machine of the present invention, the screw conveyor shaft of the upper conveying device is concentrically connected to the upper part of the whitening trochanter, and the gap between the spiral blade of the spiral trochanter and the tubular body in which the spiral trochanter is installed. Is formed to be larger than the rice grain width and smaller than twice the width, and the pitch gap of the spiral blade is formed to be 2 to 5 times the gap between the spiral blade and the cylinder, so that the white rice discharge port of the rice polishing machine is located at a high position. It can be installed and a large container for removing white rice can be used, and because multiple layers of rice grains that are hard to fall from the gap between the spiral blade and the cylinder are formed, the spiral trochanter below the polishing chamber Since the pressure exerted on the rice is reduced, it is possible to prevent the ability of the spiral trousers to feed the rice grains from fluctuating significantly by adjusting the accuracy of the grinding, and it is possible to prevent the deterioration of the processing ability of the grinding and polishing.

[Brief description of drawings]

FIG. 1 is a side sectional view of a vertical type rice milling machine according to the present invention, FIG. 2 is an enlarged view thereof, FIGS. 3 to 5 are views showing an upper conveying device, and FIG. 6 is another embodiment. It is the figure which showed. 1 …… Vertical type rice milling machine 2 …… Perforated wall removal bran polishing tube 3 ……
Spindle 4 ... Helical trochanter, 5 ... Stirring protrusion, 6 ... Friction whitening trochanter, 7 ... Whitening chamber, 8 ... Brown rice supply port, 9 ... White rice discharge port, 10 ... Brown rice tank, 11 …… Bottom plate, 12 …… Supply gutter, 13 …… Motor mount, 14 …… Motor, 15 …… Pulley, 16 …… Pulley, 17 …… Blower, 18 …… V belt, 19 …… Bran outlet , 20 …… Bran tube, 21 …… Cyclone, 22 …… Intake port, 23 …… Blowhole, 24 …… Branning chamber, 25…
… Upper conveyor, 26 …… Spiral, 27 …… Screw conveyor shaft, 28 …… Coupling pin, 29 …… Bearing, 30 …… Coupling rod,
31 …… Coupling pin, 32 …… Resistance plate, 33 …… Gap, 34 …… Spring, 35 …… Pressure adjusting device, 36 …… Bearing, 37 …… Supporting rod, 38 …… Adjusting rod, 39 …… Steering wheel, 40 …… Scraping blade, 41 …… Refining product outlet, 42 …… Exhaust gutter, 43 …… Forward / reverse motor, 44 …… Gathering gutter, 45 …… Return gutter, 46 …… Window, 47…
… Pulley, 48 …… V belt, 49 …… Resistance device, 50 …… Spiral, 51 …… Cylinder, 52 …… Spiral blade, 53 …… Cylinder.

Claims (1)

[Claims] 1. A spiral trochanter on a vertical shaft rotatably provided in the cylindrical body, and an upper part of the spiral trochanter, wherein a part of a polygonal cylindrical body erected on a box machine frame is used as a porous wall debranching whitening cylinder. The porcelain trochanter and the porcelain-walled bran arbor and the porcelain trochanter are the main parts, the lower part of the whitening chamber is connected to the brown rice supply part, and the upper part is connected to the white rice discharge part. In the vertical type rice milling machine in which the screw conveyor shafts of the upper conveying device are concentrically connected to each other, the gap between the spiral blade of the spiral rotor and the cylindrical body in which the spiral rotor is installed is larger than the rice grain width, The vertical axis rice milling machine is characterized in that each pitch gap of the spiral blade is formed to be 2 to 5 times as large as the gap between the spiral blade and the cylinder while being formed to be smaller than double.