JPH0767539B2 - 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 described with reference to FIG. 7. 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.
A discharge gutter 109, which communicates with item 3, is provided to form a single pass through a rice milling machine.

[Problems to be solved by the invention]

By the way, in this kind of so-called single-pass milling machine, the bran layer (Aleuron layer) and the germ of the surface layer of the rice grain are removed while the rice grain is being pumped to obtain milled rice.
Of course, it is not possible to process embryo rice that leaves only the germ except the bran layer, and it is not intended for that purpose.

A technical object of the present invention is to provide a vertical axis rice milling machine capable of processing embryonic rice.

[Means for solving problems]

In order to achieve the above-mentioned object, the vertical axis rice milling machine of the present invention includes a polishing trochanter and a grinding trochanter whose surface is a cutting blade, and a shutter slightly below the outlet. In addition, a circulation port leading to the tank is provided.

In addition, a grinding trochanter with a ridge and a jet groove is provided at the upper end of the grinding white trochanter, and this blast groove is communicated with the air supply port at the lower end of the spindle formed in a hollow shape, The bran removal chamber and the bran removal fan, which are formed by surrounding the wall bran removal white tube, may be connected by an air passage.

Further, a coaxial spiral body may be provided above the grinding milled trochanter or below the spiral trochanter so that the polished rice (embryo rice) can be taken out from a higher position.

[Work]

In the vertical-axis rice milling machine configured in this way, the rice grains that are pumped to the whitening chamber by the spiral trochanter rotate under a relatively low pressure around the base and head of the embryo as axes. However, a part of the bran layer is scraped off by bringing the abdomen, back and both side surfaces into contact with the periphery of the grinding type white trochanter rotating at a relatively low peripheral speed. The rice grains discharged from the top of the polishing room are
It is returned to the tank from the circulation port and pumped to the polishing chamber from the supply port, and part of the bran layer is scraped off again by the grinding polishing trochanter.
After that, the same operation is performed, and the rice polishing progresses gradually until finally the rice leaves become embryonated rice (embryo rice).
At this point, when the circulation port is closed by the shutter, the polished rice is taken out of the machine through the discharge port.

When the rice grain is blown from the blast groove of the abrasive trochanter, the heat generation of the rice grain is suppressed and the bran dust removed from the surface of the rice grain is quickly removed.

Further, the spiral body provided above the grinding white trochanter or below the spiral trochanter lifts rice grains with almost no load.

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 substantially in the middle of an open box-shaped case 1, and the tank 3 is located above the hopper 2 and the bottom of the hopper 2 is a tank bottom hole 4. 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.

A hollow spiral rotor 7 formed integrally with the hollow main shaft 6 is disposed above the hollow main shaft 6, and a funnel base 9 having a supply port 8 is provided around the spiral rotor 7. Then, the supply port 8 and the tank bottom hole 4 are connected by the supply gutter 10.

The grinding whitening trochanter 12 is arranged in connection with the upper end of the spiral trochanter 7. The grinding and polishing trochanter 12 is made of hard sand, and a hollow polishing trochanter 14 is connected to the upper end of the grinding and polishing trochanter 12. On the surface of the polishing trochanter 14, a plurality of ridges 15 running almost vertically are provided, and the blast grooves 16 are formed along the ridges 15.
To drill. In addition, a scraping piece 17 may be formed on the upper end of the polishing trochanter 14.

The spiral rotator 7, the grinding whitening trochanter 12 and the abrasive trochanter 14 are connected by a hollow spline shaft 18, so that the air inlet 19 at the lower end of the hollow main shaft 6 and the blast groove 16 of the abrasive rotator 14 are connected to each other. Communicate. In addition, a cylindrical porous wall debranching polishing white cylinder 20 is erected around the grinding and polishing trochanter 12 and the polishing trochanter 14, and a main part is provided between the grinding and polishing trochanter 12 and the porous wall debranching and polishing white cylinder 20. Whitening room
A bran removal chamber 24 is formed by a cover 23 around the perforated wall bran removal white tube 20 and a part of the cover 23 is opened to form a bran outlet 25. It should be noted that the perforated wall debarking white tube
A plurality of variable resistance claws may be provided on the inner wall of 20.

A discharge port ring 27 is fitted into the discharge port 26 near the upper end of the abrasive trochanter 14 to form a narrow discharge port 26, and a fried grain cylinder 28 is erected on the discharge port ring 27. A notch 11 is provided at the upper end of the fried grain cylinder 28, and a guide gutter 29 is attached to the gutter 29.
The discharge port 30 is located at the end of the fried food container 28, and the circulation port 13 is located at a position slightly lower than the cutout portion 11 on the peripheral wall of the fried cylinder 28 on the opposite side of the cutout portion 11.
And the circulation port 13 and the return port 55 opened on the wall of the tank 3 are connected by a communication gutter 22.
A shutter 74 that moves up and down is provided at 13. The connecting pipe receiver 31 fixed to the upper wall of the guide gutter 29 and the upper end of the polishing trochanter 14 are connected by a connecting pipe 32. That is, the connecting pipe 32
The lower end of the is fitted into the opening 33 at the upper end of the abrasive trochanter 14 and is engaged 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 a hollow part of the connecting pipe 32 is provided, and a lower end part of the elevating shaft 38 is connected to the connecting pipe 32.
It is attached to the spiral body 35 by a pin 39 which is inserted into a pair of long holes 40 formed in the. 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 in 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.

A discharge gutter 54 is provided in connection with the discharge port 30 of the guide gutter 29, and a residual rice extraction port 57 connected to the residual rice extraction gutter 56 is opened at the lower end of the funnel base 9, and the residual rice extraction port 57 remains. Attach the lid 75 for the rice outlet. Further, a pulley 58 is fixed to the lower end of the hollow main shaft 6, and the pulley 58 and the motor base are
Motor pulley 61 (small diameter side) of electric motor 60 stuck to 59
Are connected by a belt 62 and a tensioning wheel 63.

A bran removal fan 64 is provided at the bottom of the box-shaped case 1, and a ventilation port 65 of the bran removal fan 64 is connected to the bran removal port 25 through a flexible pipe 66, and the ventilation port 67 is also provided.
Is connected to a cyclone dust collector 69 provided outside the machine via an exhaust duct 68 attached to the inner wall of the box-shaped case 1. Further, the fan pulley 70 of the bran removal fan 64 is moved / connected by the motor pulley 61 (on the large diameter side), the belt 71 and the tension wheel 72.

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 74 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 placed in the tank 3 so as to be located below the circulation port 13, and a knob 53 for adjusting the degree of milling, that is, the condition of the bowl, is located near the center and the knob is provided. 73 is pulled up, the shutter 74 is moved upward, the circulation port 13 is opened, and the operation button (not shown) is turned on.

The rice grains in the tank 3 flow down the supply gutter 10 and flow into the supply port 8 and are pumped by the spiral rotator 7 to reach the whitening chamber 21. The rice grains in the polishing chamber 21 come into contact with the surface of the grinding and polishing trochanter 12 whose peripheral speed is smaller than that of the grinding and polishing trochanter (peripheral speed 600 m / min) in a normal horizontal axis type rice milling machine, and mainly due to grinding action The rice bran layer is finely crushed and scraped off. That is,
By the grinding white trochanter 12 having a relatively low peripheral speed, the rice grains rotate about the base and the head, and the side surfaces, abdomen and back (see FIG. 6) of the rice grains come into contact with the surface of the grinding white trochanter 12. The bran layer is partly peeled off under a low pressure of ^{20 to} 30 g / cm ² .

In this way, the rice grains that have been subjected to the whitening action by the grinding whitening trochanter 12 are then agitated by the ridges 15 of the abrasive trochanter 14 while being abraded by the particle friction. That is, due to the suction force of the bran removing fan 64, the air flowing from the air supply port 19 of the hollow main shaft 6 is blown through the peripheral portion of the spiral rotator 7, the hollow portion of the spline shaft 18 and the hollow portion of the abrasive rotator 14. It blows out from the wind channel 16 to remove the bran adhering to the surface of the rice grain and lower the temperature of the rice grain to prevent the release of water due to the temperature rise. At this time, the discharge port 26 is narrowed by the resistor 37, the pressure applied to the rice grains is appropriately increased, and the polishing action is promoted.

The bran powder removed from the porous wall bran removal whitening tube 20 into the bran removal chamber 24 by the wind from the blowout groove 16 is taken out together with the bran powder leaking from the porous wall removal bran polishing white tube 20 near the polishing chamber 21. It is discharged from 25, is conveyed by air to the cyclone dust collector 69 through the flexible pipe 66 and the exhaust duct 68, and is collected.

The rice grains discharged from the discharge port 26 are further pumped in the fried grain cylinder 28 by the spiral 35, and the rice grains reaching the upper end of the fried grain cylinder 28 are circulated from the circulation port 13 provided at a position lower than the guide gutter 29. It flows out, flows down the connection gutter 22 and flows into the tank 3 from the return port 55. Then, the rice grains gradually flow down into the tank 3, are supplied into the funnel stand 9 through the supply port 8, are pumped by the spiral rotator 7, and again subjected to the whitening action by the grinding whitening trochanter 12 and the polishing transfer. After being polished by the child 14, it is fried by the spiral body 35, and the circulation port 13 and the connection gutter 22.
It is recirculated into the tank 3 via.

Thus, while the rice grains circulate between the milling chamber 21 and the tank 3, the bran layers on the abdomen, back and both sides of the rice grains are gradually peeled off, and finally, the milled rice with the germ remaining, that is, the germ. Become rice. At this point, when the knob 73 is pushed down and the shutter 74 is moved downward to close the circulation port 13, the rice grains flow out from the discharge port 30 of the guide gutter 29 and are taken out of the machine through the discharge gutter 54.

If you want to further increase or decrease the internal resistance due to the properties of the rice grains, operate knob 53 upward or downward,
By moving the lifting bearing mounting body 42 up and down via the relay lever body 47, the spiral body 35 provided with the resistor 37 at the lower end is moved up and down while rotating to enlarge the discharge port 26,
Perform by narrowing. Further, the rice grains remaining at the bottom of the funnel base 9 after the operation is completed are taken out from the residual rice taking-out port 57 by pulling out the residual rice taking-out port cover body 75.

〔The invention's effect〕

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

I. The white trochanter is used as a grinding white trochanter, and a circulation port leading to the tank is opened slightly below the discharge port, and a shutter for opening and closing is provided at the circulation port. Circulation between the tank and the tank, and under relatively low pressure and low frequency speed, the bran layer on the abdomen, back and both sides of the rice grain is gradually scraped off by the shaping action of the grinding white trochanter, leaving the embryo. Polished rice, that is, germinated rice, is processed. Since it is a vertical shaft type, the pressure in the whitening chamber is uniform in the plane direction, and the occurrence of uneven milling and broken rice is small. Therefore, long-grained foreign rice and damaged rice grains in inland rice,
Poor rice grains such as immature grains and powdery grains can be polished without being crushed.

B. By blowing air on the rice grains, the temperature of the rice grains can be lowered (water will not escape) and bran removal can be promoted.

C. 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 the bag.

[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, FIG. 6 is an enlarged view of rice grains, and FIG. 7 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
… Spiral trochanter, 8 …… Supply port, 9 …… Funnel stand, 10 …… Supply gutter, 11 …… Notch part, 12 …… Grinding white trochanter, 13 …… Circulating port, 14 …… Grinding trochanter , 15 …… rush, 16 …… blast groove, 17…
… Scraping piece, 18 …… Spline shaft, 19 …… Air inlet, 20…
… Perforated wall descaling white tube, 21 …… white matter, 22 …… contact gutter, 23
…… Cover, 24 …… Bran removal room, 25 …… Bran outlet, 26 ……
Discharge port, 27 …… Discharge port ring, 28 …… Lifting cylinder, 29 …… Guide trough, 30 …… Discharge port, 31 …… Connection pipe receiver, 32 …… Connection pipe,
33 …… Aperture, 34 …… Pin, 35 …… Spiral, 36 …… Scraping blade, 37 …… Resistor, 38 …… Up-and-down axis, 39 …… Pin, 40…
… Long hole, 41 …… elevating bearing, 42 …… elevating bearing mount, 43…
… Working axis, 44 …… fulcrum axis, 45 …… fulcrum hole, 46 …… notch, 47 …… relay lever body, 48 …… long hole, 49 …… force point axis,
50 …… axis, 51 …… fan lever, 52 …… long hole, 53 …… knob, 54 …… drainage gutter, 55 …… return port, 56 …… remaining rice removal gutter, 57 …… remaining rice removal port, 58 …… Pulley, 59 …… Motor base, 60 …… Electric motor, 61 …… Motor pulley, 62 …… Belt, 63 …… Tension car, 64 …… Bran removal fan,
65 ... Air inlet, 66 ... Flexible pipe, 67 ... Air outlet, 68 ... Air exhaust duct, 69 ... Cyclone dust collector, 70 ...
… Fan pulley, 71 …… Belt, 72 …… Tension car, 73…
… Knob, 74… Shutter.

Claims (3)

[Claims] 1. A box-shaped case equipped with a tank, in which a main shaft on which a white trochanter and a spiral trochanter are mounted is rotatably erected by an electric motor and communicates with the outside of the machine above the white trochanter. Outlet
Each of the supply ports communicating with the bottom of the tank is provided below the milled trochanter, and a perforated wall debarking polished tube is erected so as to surround the milled trochanter. In the vertical axis rice milling machine, which forms a polishing chamber with the main part of the polishing machine, further comprising a resistor for controlling the rice grains discharged from the upper end of the polishing chamber, the polishing trochanter is a grinding polishing trochanter, and The vertical axis rice milling machine is characterized in that a circulation port leading to the tank is opened slightly below the discharge port, and a shutter for opening and closing is provided at the circulation port. 2. The grinding trochanter is provided at its upper end with a polishing trowel equipped with jets and jet grooves for stirring rice grains, and the main shaft is hollow, and the air inlet and the jet groove at the lower end of the main shaft are provided. The exhaust port of the bran removal chamber formed by surrounding the perforated wall bran removal white tube and the suction port of the bran removal fan provided in the box-shaped case are connected by an air passage. (1) The vertical axis rice milling machine described in the above. 3. A fried shell cylinder for feeding rice grains is connected to above the grinding white trochanter or below the spiral trochanter, and a spiral body is coaxially provided in the fried shell cylinder. The vertical axis rice milling machine according to (1) or (2).