JPH07114969B2 - Vertical type rice milling machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a rice polishing machine, and more particularly to a vertical axis rice polishing machine having a supply port at a lower portion and a discharge port at an upper portion.

[Conventional technology]

As a vertical type rice milling machine having a supply port at the lower part and a discharge port at the upper part, for example, Japanese Patent Publication No. 47-650 is known. This will be explained with reference to FIG. 6. A white polishing cylinder 102 is formed by surrounding a white polishing trochanter 101 rotatably attached by a vertical shaft 107, and a discharge port 103 is formed in a discharge port 103 above the white polishing cylinder 102. A pressing lid 104 for pressing is provided, a supply port 106 communicating with the tank 105 is provided in the lower part, and the supply port 106 is exposed.
A threaded portion 108 axially attached to the vertical shaft 107 is provided.
It is formed by providing a discharge gutter 109 which communicates with 3.

[Problems to be solved by the invention]

By the way, in this type of vertical-axis rice milling machine, since the rice is milled while the rice grains are being sent up against the dead weight of the rice grains, excessive pressure is likely to be applied to the rice grains, causing fever and broken rice. The number of rice grains was relatively large, and in particular, it was a brittle (weak) rice grain with many powdery substances (heart-polished rice and belly-polished rice were not suitable.

The present invention is intended to solve this point, and even if the rice grains have a lot of powdery substances that easily generate broken rice, the rice does not break, and the rice is smoothly polished without excessive heat generation. It is a technical issue to provide a vertical type rice milling machine that can be used.

[Means for solving problems]

In order to achieve the above object, the vertical shaft type rice milling machine of the present invention has a polishing trochanter which is a grinding trochanter with an upper spiral trochanter sandwiched therebetween, and which is above the grinding trochanter and has a small diameter of friction pearling. And a spiral member for discharging rice grains concentrically with the spiral trochanter, the grinding white trochanter, the upper spiral trochanter and the friction white trochanter above the discharge port. Measures have been taken.

Further, the friction polishing trochanter was formed with a blowout groove and the main shaft was made hollow, and the air supply port at the lower end of the main shaft was made to communicate with the above-mentioned blowout groove, and was formed by surrounding the perforated wall bran removal white tube. When the discharge port of the bran removing chamber and the air intake port of the bran removing fan are connected by the air passage, rice polishing can be performed more smoothly for the reason described below.

[Work]

In the vertical type rice milling machine configured as described above, the rice grain fed by the spiral trochanter between the porous-wall debracing and polishing pulverizer and the grinding and polishing trochanter has a peripheral velocity at a relatively low pressure. A large number of scratches were made on the bran layer of the rice grain surface layer by contacting the peripheral surface of a large grinding white trochanter, and in the state where the friction coefficient was increased, in the gap between the upper friction whitening trochanter and the porous wall removing bran pure white tube. Under the condition that the internal pressure is appropriately raised by the resistor, it is subjected to the stirring action by the frictional trochanter with a relatively low peripheral speed, and the bran layer is rubbed by the particles friction between the particles with increased frictional resistance. It is quickly scraped off, and is further lifted up by a discharging spiral body and discharged from a high position.

When the rice grains are blown with air from the blast grooves provided in the frictional trochanter, the rice grains are suppressed from heat generation and the bran dust separated from the surface of the rice grains is quickly removed.

Example of Invention

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical sectional view of the vertical axis rice milling machine (a sectional view taken along the line AA in FIG. 2), FIG. 2 is a plan view, FIG. 3 is a partially enlarged sectional view of the upper part, and FIG. 4 is the upper part. FIG. 5 is a partially enlarged perspective view of FIG. 5, and FIG. 5 is an enlarged perspective view of a white trochanter.

A hopper 2 is provided in a substantially middle portion of a box-shaped case 1 having an open upper part, and a tank 3 is provided above the hopper 2 and a tank bottom hole 4 is provided at a lower end of the hopper 2. The tank bottom hole 4 is formed slightly near the front wall 1a of the box-shaped case 1,
A hollow main shaft 6 is rotatably provided between the front wall 1a and the tank bottom hole 4 by bearings 5A and 5B.

Above the hollow main shaft 6, a hollow lower spiral rotator 7 formed integrally with the hollow main shaft 6 is arranged, and around the lower spiral rotator 7, a funnel stand 9 having a supply port 8 is provided. Then, the supply port 8 and the tank bottom hole 4 are connected by a supply gutter 10, and a shutter that can slide up and down is provided on the supply gutter 10.
Provide 11

A grinding whitening trochanter 12 is arranged in connection with the upper end of the lower spiral trochanter 7. The grinding white trochanter 12 is made of Kongosa, and an upper spiral trochanter 13 is provided in connection with the upper end of the grinding white trochanter 12. The upper spiral trochanter 13 is formed in a taper shape such that the diameter gradually decreases from the lower end to the upper end, and a hollow frictional whitening trochanter 14 is connected to the upper end thereof. Rubbing white trochanter
14 is formed to have a diameter substantially the same as the diameter of the upper end of the upper spiral rotator 13 and is relatively smaller than the diameter of the grinding white trochanter 12. A blast groove 16 is bored along with 15. In addition, a scraping piece 17 is provided on the shoulder at the upper end of the rubbing white trochanter 14.

The grinding white trochanter 12, upper spiral trochanter 13 and friction white trochanter
14 are connected by a hollow spline shaft 18, and the lower end of the spline shaft 18 is connected to the lower spiral roller 7. As a result, the air supply port 19 at the lower end of the hollow main shaft 6 communicates with the air blow groove 16 of the friction whitening trochanter 14. Further, a perforated wall stripping bran removal white tube 20 is erected so as to surround the grinding and polishing rooster 12, the upper spiral trochanter 13 and the friction polishing whitening trochanter 14.
Between the lower part of the whitening chamber 21 and the rubbing whitening trochanter 14
The upper part of the whitening chamber whose main part is between the white wall and the white wall 20
22 is formed, and the porous wall bran removal whitening pipe 20 near the lower polishing chamber 21 is formed into a cylindrical shape, and the porous wall debris polishing white pipe 20 near the upper polishing chamber 22 is formed into a polygonal tube, for example, a hexagonal tube shape. . Furthermore,
A cover 23 is provided around the perforated wall debarking white tube 20 with a cover 23.
24 is formed, and a part of the cover 23 is opened to form a bran outlet 25.

A discharge port ring is located at the discharge port 26 near the upper end of the friction whitening trochanter 14.
27 is inserted to form the discharge port 26 narrowly, and the fried grain cylinder 28 is erected on the discharge port ring 27. A guide gutter 29 is provided at the upper end of the fried grain cylinder 28, and the upper end of the guide gutter 29 is provided with a discharge port 30.
And eggplant Then, the connecting pipe receiver fixed to the upper wall of the guide gutter 29.
31 and the upper end of the frictional trochanter 14 are connected by a connecting pipe 32. That is, the lower end of the connecting pipe 32 is fitted into the opening 33 at the upper end of the friction whitening trochanter 14 and is fixed by the pin 34, and the upper end thereof is slidably supported by the connecting pipe receiver 31.

A spiral body 35 is slidably fitted on the outer peripheral surface of the connecting pipe 32 on the outer side of the connecting pipe 32. The spiral body 35 is slightly shorter than the connecting pipe 32, and a spiral blade 35a is provided on the peripheral surface thereof, a scraping blade 36 is formed at the upper end, and an inverted conical trapezoidal resistor 37 is formed at the lower end. To be done. Further, an elevating shaft 38 having an upper part protruding out of the guide gutter 29 and a lower half part inserted in the hollow part of the connecting pipe 32 is provided, and a lower end part of the elevating shaft 38 has a pair of long holes formed in the connecting pipe 38. A spiral body with a pin 39 inserted through the hole 40
Being locked in 35. On the other hand, the upper end of the lifting shaft 38 is pivotally supported by the lifting bearing 41 fixed to the lifting bearing mounting body 42. As a result, the lifting shaft 38 moves up and down as the lifting bearing mount 42 moves up and down, and the spiral body 35 moves up and down via the pin that moves up and down along the elongated hole 40 of the connecting pipe 32.

Next, the lifting mechanism of the lifting bearing mount 42 will be described.
Working shafts 43 are fixed to both side walls of the lifting bearing mounting body 42, respectively.
The fulcrum shafts 44 are fixed to both side walls of the upper end of the guide trough 29 in parallel with the working shaft 43. Then, a relay lever body 47 having a pair of fulcrum holes 45 through which the fulcrum shafts 44 are inserted and notches 46 that engage with the working shafts 43 is mounted over the guide trough 29 from above. A long hole is formed at the end of the relay lever body 47 opposite to the notch 46.
48 is provided, and the force point shaft 49 is loosely fitted in this long hole 48,
On the other hand, the end portion of the force application shaft 49 is loosely fitted into the long hole 52 formed in the fan-shaped lever 51 rotatably provided by the shaft 50 extending horizontally on the side of the notch 46. When the knob 53 of the fan-shaped lever 51 protruding from the shaft is operated, the fan-shaped lever 51 rotates around the shaft 50, and this operation is transmitted to the relay lever body 47 via the force point shaft 49 and cuts around the fulcrum shaft 44. The notch 46 moves up and down, and the up-and-down bearing mounting body 42 is moved up and down via the action shaft 43 that engages with the notch 46.

Connected to the outlet 30 of the guide gutter 29, provided with a drain gutter 54 rotatable by a hinge 55, and opening a residual rice outlet 57 connected to a residual rice outlet gutter 56 at the lower end of the funnel base 9, The residual rice removal port 57 is equipped with a residual rice removal port lid body 75. Further, a pulley 58 is fixed to the lower end of the hollow main shaft 6, and the pulley 58 and the motor pulley 61 (small diameter side) of the electric motor 60 fixed to the motor base 59 are a belt 62 and a tension wheel 63.
Connected by.

A bran removal fan 64 is arranged at the bottom of the box-shaped case 1. The air intake port 65 of the bran removal fan 64 is connected to the bran outlet 25 through a flexible pipe 66, and the air exhaust port 67 has a box shape. It is connected to a cyclone dust collector 69 provided outside the machine through an exhaust duct 68 attached to the inner wall of the case 1. Also, the fan pulley 70 of the dust removal fan 64 is the motor pulley 61.
(Large diameter side) and the belt 71 and the tension wheel 72 are moved and connected.

An operating portion 76 is provided on the front wall 1a of the box-shaped case 1, and a knob 73 fixed to the end of the connecting rod for sliding the shutter 11 is provided on the upper part of the box-shaped case 1 so as to project therefrom.

The specific operation of the above embodiment will be described below. Rice grains (brown rice) are put in the tank 3, and an operation button (not shown) of the operation unit 76 is turned on to start the electric motor 60. Then, with the knob 53 for adjusting the degree of refinement, that is, the degree of polishing, located at the center,
When the shutter 11 is gradually pulled up by 73, rice grains flow into the supply port 8 through the supply gutter 10.

The rice grains supplied from the supply port 8 into the funnel stand 9 are sent up by the lower spiral terminal 7 and come into contact with the surface of the grinding and polishing trochanter 12 having a relatively high peripheral speed in the lower polishing chamber 21 at a relatively low pressure. However, the bran layer of brown rice is scraped off while being finely crushed mainly by the impact action. In this way, the rice bran layer in the surface layer of the rice grain is damaged by the grinding and polishing trochanter, and the rice grain having a significantly increased friction coefficient is sent up by the upper spiral rotator 13 and reaches the upper whitening chamber 22. In addition, the internal resistance of the lower polishing chamber 21 can be variably formed by forming the porous wall bran-removing and polishing cylinder 20 near the upper spiral rotator 13 as a non-perforated plate and vertically slidable, or the lower polishing chamber A so-called resistance claw is provided on the porous wall debranching whitening cylinder 20 in 21 and the like, which is appropriately performed.

The rice grain in the upper polishing chamber 22 is subjected to the stirring action by the ridge 15 of the friction polishing trochanter 14, but since the discharge port 26 is narrowed by the resistor 37, the internal resistance of the upper polishing chamber 22 is moderate. Increased, and the bran layer is scraped by the friction of the rice grains. Further, since the rice grains have a large number of scratches on the surface in the lower polishing chamber 21 and have a large coefficient of friction, the frictional action becomes more active. Therefore,
Since rice is milled quickly with a relatively small pressure, less broken rice occurs.

In this way, the bran generated by milling rice leaks from the porous wall bran-cleaning white tube 20 into the bran removal chamber 24. However, the suction force of the bran-removing fan 64 causes the blower port 19 at the lower end of the hollow main shaft 6 to blow.
The air flowing in from the air blows out from the air blow groove 16 of the friction trochanter 14 and promotes the stirring of the rice grains, and along with the rice bran, the flexible pipe 66, the bran removing fan 64 and the exhaust air duct 68 from the bran outlet 25.
After passing through, the cyclone dust collector 69 separates it from the wind and collects it, so the bran is well cut.

On the other hand, the rice grains that have been debranched by the blast from the blast groove 16 of the friction milling trochanter 14, namely milled rice, are discharged from the discharge port 26 narrowed by the resistor 37 and further fried by the spiral body 35. Then, it is scraped out into the guide gutter 29 by the scraping blade 36, and is discharged from the discharge port 30 to the outside of the machine through the discharge gutter 54. In addition, when it is desired to further raise the degree of whitening, or when the degree of whitening is lowered to so-called 6 minutes or 7 minutes, the knob 53 is operated upwards or downwards and the lifting lever 47 is used to lift the bearing. By moving the attachment body 42 up and down, the spiral body 35 having the resistor 37 at the lower end is moved up and down while rotating to enlarge or narrow the discharge port 26.

At the start or end of the operation, the pressure in each of the whitening chambers 21 and 22 is too small to perform smooth rice polishing, resulting in unevenness, but at this time, the discharge gutter 54 is rotated inward, The discharged rice grains are returned to the circulation path 74 leading to the hopper 2. Also,
The rice grains remaining at the bottom of the funnel base 9 after the operation is taken out from the residual rice extraction port 57 by pulling out the residual rice extraction port lid 75.

〔The invention's effect〕

Since the present invention is configured as described above, it has the effects described below.

I. The polishing trochanter is composed of a grinding trochanter that grinds and a friction trochanter that has a small diameter and is located above the grinding trochanter and has a small diameter. With less generation of crushed rice and heat generation, even weak rice grains can be milled smoothly.

B. By providing the spiral body coaxially, the discharge port can be provided at a high position, which is convenient when the polished rice is received in a bag or the like.

C. By blowing air from the frictional trochanter, the temperature of the rice grains can be lowered (water will not escape) and bran removal can be promoted.

[Brief description of drawings]

Fig. 1 is a vertical sectional view of a vertical type rice milling machine, and Fig. 2 is a plan view of the same.
FIG. 3 is an enlarged vertical sectional view of the same portion, FIGS. 4 and 5 are enlarged perspective views of the same portion, and FIG. 6 is a vertical sectional view of a conventional example. 1 ... Box-shaped case, 2 ... Hopper, 3 ... Tank, 4
...... Tank bottom hole, 5A, 5B ... Bearing, 6 ... Hollow spindle, 7
...... Lower spiral rotator, 8 ... Supply port, 9 ... Funnel stand, 10 ...
… Supply gutter, 11 …… Shutter, 12 …… Grinding white trochanter, 13
...... Upper spiral trochanter, 14 …… Friction whitening trochanter, 15 ……
16 …… Blowout groove, 17 …… Scraping piece, 18 …… Spline shaft,
19 …… Ventilation port, 20 …… Multi-walled bran removal white tube, 21 …… Lower whitening chamber, 22 …… Upper whitening chamber, 23 …… Cover, 24 …… Bran removal room, 25 …… Bran outlet, 26 …… Discharge port, 27 …… Discharge port ring, 28 …… Grain barrel, 29 …… Guide trough, 30 …… Discharge port, 31
...... Connection pipe receiver, 32 ...... Connection pipe, 33 ...... Opening part, 34 ...... Pin, 35 ...... Spiral body, 36 ...... Scraping blade, 37 ...... Resistance body, 38
...... Lifting shaft, 39 ...... Pin, 40 ...... Long hole, 41 ...... Lifting bearing, 42 ...... Lifting bearing mounting body, 43 ...... Working shaft, 44 ...... Support shaft, 45 ...... Support hole, 46 ... … Notches, 47 …… Relay lever body, 48 …… Oval hole, 49 …… Power point axis, 50 …… Axis, 51 …… Fan lever, 52 …… Oval hole, 53 …… Knob, 54 …… Discharge gutter , 55
...... Hinge, 56 …… Gutter for picking up residual rice, 57 …… Port for picking up residual rice, 58 …… Pulley, 59 …… Motor base, 60 ……
Electric motor, 61 …… Motor pulley, 62 …… Belt, 63…
… Tension car, 64 …… Bran removing fan, 65 …… Suction port, 66 …… Flexible pipe, 67 …… Exhaust port, 68 …… Exhaust duct,
69 …… cyclone dust collector, 70 …… fan pulley, 71…
… Belt, 72 …… Tension car, 73 …… Knob, 74 …… Circuit.

Claims (2)

[Claims] 1. A box-shaped case having a tank, in which a main shaft having a white trochanter and a spiral trochanter rotatably mounted is erected rotatably, and a discharge port for white rice is provided above the white trochanter. A feed port for the raw material is provided facing the lower part of the spiral trochanter, and the rice grain discharged from the porous wall removal bran and the whitening tube surrounding the white trochanter is regulated so that the rice polishing can be completed while the rice grain is being transferred. In the vertical type rice milling machine provided with a resistor, the whitening trochanter is a grinding whitening trochanter sandwiching the spiral trochanter, and is above the grinding whitening trochanter, and has a small diameter friction whitening. And a spiral member for discharging rice grains concentrically with the spiral trochanter, the grinding white trochanter, the spiral trochanter and the friction white trochanter above the discharge port. A vertical shaft type rice milling machine. 2. The friction-polishing trochanter is provided with an air blow groove and the main shaft is made hollow so that the air supply port at the lower end of the main shaft and the air blow groove are communicated with each other, while the whitening of the perforated wall is performed. The vertical axis rice milling machine according to claim 1, wherein an outlet of the bran removing chamber formed by surrounding the cylinder and an air inlet of a bran removing fan provided in the box-shaped case are connected by an air passage.