JPH06327989A - Vertical-shaft grain cleaning machine - Google Patents

Abstract

PURPOSE:To make a grain grinding and cleaning rotor large-sized, to improve the grain milling capacity and to easily control the grain milling degree by connecting the grain outlet of a first grain cleaning part to the grain inlet of a second grain cleaning part through a feed line. CONSTITUTION:The upper part of a machine casing 2 is used as a grain grinding and cleaning part 3 for sending grain downward and the lower part as a grain rubbing and cleaning part 4 for sending grain upward, and a grain grinding and cleaning rotor 7 and a grain rubbing and cleaning rotor 9 are pivoted on a main shaft 5. Consequently, since a grain grinding and cleaning chamber and a grain rubbing and cleaning chamber are separately provided, the grin milling degree is controlled subtley and easily. Further, as the shaft is vertical, the diameter of the rotor 7 is drastically enlarged as compared with a horizontal shaft, and the rice milling capacity is remarkably improved. The setting area is diminished, and the production cost is drastically reduced by providing plural grain cleaning parts to one machine casing 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical type grain mill having a first grain portion and a second grain portion.

[0002]

2. Description of the Related Art Conventionally, a grain refiner in which two or more white trochanters are axially mounted on one main spindle is known, which will be described with reference to FIG. Reference numeral 81 is a horizontal shaft type grain refiner, in which a spiral rotor 83, a grinding white rotor 84, an intermediate spiral rotor 85 and a friction white rotor 86 are axially mounted on a horizontally installed main shaft 92. A gap between the grinding whitening trochanter 84 and the bran removal wire netting cylinder 87 is referred to as a grinding whitening chamber 88, and a gap between the friction whitening rotor 86 and the bran removal netting cylinder 89 is referred to as a friction whitening chamber 90. One end of the grinding and polishing chamber 84 is provided with a supply port 91.
In addition, one end of the friction polishing chamber 90 is connected to the discharge port 92, the supply hopper 93 is connected to the supply port 91, and the discharge port 9 is connected.
2 is provided with a resistance plate 94, and 95 is a weight for adjusting the pressure of the resistance plate 94.

Next, the operation of the above configuration will be described. Grain is fed from the feed hopper 83 through the feed port 91 to the spiral trochanter 8
3 is fed to the grinding and whitening chamber 88 by the spiral rotator 83, and is whitened by the whitening action generated by the rotation of the grinding and whitening trochanter 84 in the grinding and whitening chamber 88. The grain refined in the grinding and polishing chamber 84 is sent to the friction and polishing chamber 90 by the intermediate spiral trochanter 85, and is refined in the friction and polishing chamber 90 by the whitening action generated by the rotation of the friction and polishing trochanter 86. The grain refined in the friction polishing chamber 90 is discharged to the outside of the machine from the discharge port 92 while resisting the resistance plate 94.

[0004]

SUMMARY OF THE INVENTION In the conventional horizontal axis type grain refiner as described above, a structure in which a grinding white trochanter and a friction white trochanter are axially mounted on one axis is used. The diameter must be larger than the diameter of the friction trochanter. This is because grinding whitening is performed by rotating the grinding whitening rotor at a high speed, and friction whitening is performed by rotating the friction whitening rotor at a low speed. However, it is structurally difficult to increase the size of the grinding white trochanter using the horizontal axis type grain refiner as described above, and the diameter is limited to 300 mm. Therefore, it is difficult to significantly improve the whitening ability, and there is a drawback that the device cannot be upsized.

Further, a vertical type grain refiner in which two or more white trochanters are mounted on one main shaft is also known. Since this is a vertical type, it is possible to increase the size of the grinding white trochanter and improve the whitening ability, but since the grain is continuously flowed down the upper and lower whitening chambers, the whiteness of the grain is improved. It had the drawback of being difficult to adjust.

The present invention eliminates the above-mentioned drawbacks of the conventional grain refiner, increases the size of the ground grain trochanter to improve the whitening ability, and easily adjusts the whiteness of the grain. It is an object of the present invention to provide a vertical axis type grain refiner capable of doing the above.

[0007]

[Means for Solving the Problems] An upper part of a machine frame is formed in a first refined grain portion and a lower part thereof is formed in a second refined grain portion, respectively. The first spiral trochanter and the first white trochanter, and the second spiral trochanter and the second white trochanter are respectively mounted on a main shaft that is rotatably erected to communicate with the inside of the second bran removal wire netting cylinder of the grain refining unit. Then, the upper end of the first whitening chamber having a gap between the first whitening trochanter and the first bran removal wire net as a main part is the grain supply section,
The lower end serves as a grain discharge unit, and the lower end of a second polishing chamber having a gap between the second white trochanter and the second bran removal wire net as a main part serves as the grain supply unit and the upper end serves as grain discharge. In the vertical axis type grain milling machine, the grain discharging section of the first grain milling section is connected to the grain feeding section of the second grain milling section via a feed path.

The first white trochanter is formed into a grinding white trochanter, and the second white trochanter is formed into a friction white trochanter.

[0009]

[Function] The grain supplied to the grain supply unit of the first refinement unit is
The grains are sent down by the first spiral trochanter and whitened by the whitening action caused by the rotation of the first white trochanter in the first whitening chamber. It is supplied to the grain supply section of the grain section. Then, the grain is sent up by the second spiral trochanter of the second milling section and whitened by the whitening action caused by the rotation of the second whitening trochanter in the second whitening chamber, and the whitened grain is the grain It is discharged from the discharge section to the outside of the machine.

By forming the first white trochanter into the ground white trochanter and the second white trochanter into the friction white trochanter, the grains are whitened by the grinding whitening action caused by the rotation of the ground white trochanter, Next, the whitening is performed by the frictional whitening action caused by the rotation of the whitening trochanter.

[0011]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a vertical-axis type grain refiner in which the present invention is implemented,
FIG. 2 is a cross-sectional view of the ground and refined grain portion, and FIG. 3 is a plan cross-sectional view of the ground and refined grain portion.

The upper part of the machine frame 2 of the vertical shaft type grain refiner 1 is formed in the grinding grain part 3 and the lower part thereof is formed in the friction grain part 4, respectively, and the spiral rotator is provided on the rotatably erected hollow main shaft 5. 6, a grinding white trochanter 7, a spiral trochanter 8 and a friction white trochanter 9 are mounted. The hollow main shaft 5 whose lower end is opened is erected at substantially the center of the machine frame 2 by bearings 10, 10, 10.

Next, the grinding and graining section 3 will be described in detail.
A rotary bottom plate 11 is axially mounted on the hollow main shaft 5, and a lower stage grinding white trochanter 12 is mounted on the rotary bottom plate 11 and axially mounted. That is,
The lower-stage grinding white trochanter 12 is composed of a large-diameter portion 12a, a small-diameter portion 12b, and an upper inclined portion 12c. The step portion on the back surface of the large-diameter portion 12a is supported by a mounting ring 13 having a flange portion (see FIG. 2). ), The inner peripheral wall of the mounting ring 13 abuts on the small-diameter portion 12b of the lower grinding whitening roller 12.

The openings 15 formed between the arms 14 of the lower grinding whitening trochanter 12 are round holes 17 opened inside the lower grinding whitening trochanter 12 and on the boss 16 of the lower grinding whitening trochanter 12.
Through the air vent hole 18 formed in the hollow main shaft 5.

A collar (joint ring) 19 is mounted on the boss 16 of the lower stage grinding white trochanter 12 and is axially mounted on the collar 19, and the boss 16 of the intermediate grinding white trochanter 20 is axially mounted on the collar 19.
The boss 16 is also provided with a round hole 17 corresponding to the air blow hole 18 of the hollow main shaft 5 and an opening 15 is formed between the arms 14, similarly to the lower grinding white trochanter 12. Further, the interrupted grinding white trochanter 20 is composed of a large diameter portion 20a, a small diameter portion 20b, a lower inclined portion 20d formed between these, and a divergent upper inclined portion 20c formed at the upper edge shoulder portion,
A blast gap 21 is formed between the lower end of the small diameter portion 20b and the upper end of the lower grinding white trochanter 12.

Further, the boss 1 of the intermediate grinding white trochanter 20
6 is mounted on another collar 19, and another collar 19 is mounted on the collar 19, and another boss 16 of another intermediate stage grinding white trochanter 20 is mounted on the collar 19. This middle-stage grinding whitening trochanter 20 also has a large-diameter portion 20a, a small-diameter portion 20b, an upper inclined portion 20c, and a lower inclined portion 20d formed in the same manner as the above-mentioned middle-stage grinding whitening trochanter 20. A blast gap 21 is formed between and. And, the boss 16 of the intermediate grinding white trochanter 20
Then, the collar 19 is mounted on the shaft 19 and the boss 16 of the upper grinding white trochanter 22 is mounted on the collar 19.

A blast hole 18 is formed near the upper end of the hollow main shaft 5 so as to correspond to the round hole 17 formed in the boss 16 of the upper grinding white trochanter 22. Further, the large diameter portion 22a at the upper part of the upper grinding white trochanter 22 is formed in a slightly divergent shape, the lower inclined portion 22d is provided between the large diameter portion 22a and the small diameter portion 22b, and the lower end portion of the small diameter portion 22b is provided directly below. A blast gap 21 is provided between the upper end edge of the intermediate grinding white trochanter 20.

On the upper end of the hollow main shaft 5, the spiral rotator 6 is mounted on the boss 16 of the upper grinding and whitening rotator 22. The spiral rotator 6 has a hollow shape without a bottom, and a screw 6a is formed on the outer peripheral surface thereof. Further, the spiral trochanter 6 is provided with a bolt 23 screwed into the upper end of the hollow main shaft 5 so that the upper grinding white trochanter 22 is ground.
It is crimped to the side.

A bran-removing wire netting cylinder 24 is erected at a small interval around each large diameter part of the lower grinding whitening trochanter 12, the middle grinding whitening trochanter 20 and the upper grinding whitening trochanter 22 and removes them. A grinding and polishing chamber 25 is formed between the bran wire cylinder 24 and each of the grinding and polishing rollers 12, 20, 22 (see FIG. 3). The bran-removing wire netting cylinder 24 is vertically divided into four parts, and each grinding whitening roller 12, 20,
The two side edges 24a are fixed by four columns 26 provided upright around the circumference 22. Further, a strut cover 27 having a U-shaped cross section is provided on each strut 26, and an arc-shaped bran removal chamber cover 28 is attached between each strut cover 27 to remove the bran removal chamber 2
9 is formed.

A supply cylinder 30 which is placed on the column 26 and surrounds the spiral rotator 6 is provided, and the upper end of the supply cylinder 30 serves as a supply port 31. Further, a hopper cylinder 32 is provided so as to be connected to the upper end of the supply cylinder 30, and a charging port 33 is opened in the upper wall of the hopper cylinder 32. Further, in the hopper cylinder 32, a fixing plate 34a having a plurality of openings and a plurality of openings,
An opening 36 is provided in the center of the rotating plate 34b which is rotated by the adjusting lever 35, a bottomless hollow conical upper guide body 37 is provided above the opening 36, and a cone-shaped lower guide body 38 is provided below the opening 36. Attach each. And the hopper cylinder 32
From a plurality of air intakes 39 opened at equal intervals on the peripheral wall of
An air intake tube 40 for taking in outside air into the upper guide body 37
And a ventilation port 41 is provided below the lower guide body 38 on the upper wall of the spiral rotator 6.

Further, resistance rings 42A to 42C are provided around the inner peripheral surface of the bran removal wire netting cylinder 24. That is, the resistance ring 42A is made to face the inside of the valley portion 43A formed by the lower inclined portion 22d of the upper grinding whitening trochanter 22, the small diameter portion 22b, and the upper inclined portion 20c of the upper side middle grinding whitening trochanter 20. The lower sloping portion 20c of the intermediate grinding white trochanter 20 is provided.
A resistance ring 42B is provided so as to face a valley portion 43B formed by the small-diameter portion 20b and the upper inclined portion 20c of the lower-stage middle grinding whitening trochanter 20, and the lower inclination of the middle grinding whitening trochanter 20. The resistance ring 42C is provided so as to face the valley portion 43C formed by the portion 20d, the small diameter portion 20b, and the upper sloping portion 12c of the lower grinding whitening trochanter 12.

The resistance rings 42A to 42C have a cross-sectional shape substantially similar to the cross-sectional shape of the valley portions 43A to 43C, and the resistance rings 42A to 42C and the valley portions 43 are formed.
A bent polishing chamber 25a is formed between A and 43C.

The resistance rings 42A to 42C are also provided.
Is crimped to the inner peripheral surface of the bran-excluding wire netting cylinder 24 by a knob bolt 45 inserted into the through hole 44 of each of the columns 26,
The knob bolt 45 can be moved up and down by the inner diameter of the through hole 44, whereby the mounting positions of the resistance rings 42A to 42C can be adjusted.

On the other hand, at the lower end of the grinding and polishing chamber 25, a bran wire netting cylinder 24 is opened to form a discharge port 46, and a discharge gutter 47 is provided in connection with the discharge port 46. A weight lever 49 is fixedly attached to a horizontal shaft 48 which is horizontally mounted on the discharge gutter 47, a resistance plate 50 facing the discharge port 46 is pivotally attached to one end of the weight lever 49, and a weight 51 is attached to the other end side of the weight lever 49. Movably attached. Then, the discharge gutter 47 is connected to the supply gutter 52 of the friction grain refinement unit 4.

Next, the friction grain refinement section 4 will be described. The friction grain part 4 has a spiral rotator 8 on the bottom of a hollow main shaft 5 provided in an upright bran-removing wire mesh cylinder 53, and a stirring protrusion 5 on the top thereof.
A frictional white trochanter 9 provided with 7 is mounted. Friction whitening chamber 54 mainly composed of the bran wire mesh cylinder 53 and the friction whitening trochanter 9
The lower end is connected to the supply port 55, and the upper end is connected to the discharge port 56. A large number of ventilation holes 58 are formed in the hollow main shaft 5, and the ventilation holes 58 communicate with the friction whitening chamber 54 and the bran removal chamber 60 via the air blow ports 59 of the friction whitening trochanter 9. A resistance plate 61 for adjusting the degree of grain refinement is provided at the outlet 56, and the weight 63 is attached to a weight lever 62 to move the weight, thereby adjusting the degree of grain refinement. The discharge gutter 63 is connected to the discharge port 56 and the transfer gutter 64 is connected to the supply port 55, and a pulley 66 attached to the tip of a screw conveyor 65 provided in the conveyance gutter 64 and a pulley 68 attached to the electric motor 67 are connected to the belt 69. To contact via. A pulley 70 attached to the hollow main shaft 5 and a pulley 72 attached to an electric motor 71 are connected via a belt 73.

An annular bran collecting chamber 74 is formed below the bran removing chamber 60, and a plurality of scraping blades 76 are provided on the outer peripheral surface of the lower end of a blade mounting cylinder 75 mounted on the hollow main shaft 5. A bran discharge port 77 is provided on the bottom surface of the bran collecting chamber 74, and a bran collecting fan 79 is connected to the end of an exhaust pipe 78 connected to the bran discharge port 77. Collection of rice bran room 7
Reference numeral 4 indicates the grinding grain portion 3 through the bran removal chamber 60 of the friction grain portion 4.
The rice bran chamber 29 is contacted.

Next, a specific operation in this embodiment will be described. The raw rice grains supplied from the chute (not shown) to the input port 33 flow down while being evenly distributed in the circumferential direction by the upper guide body 37, and are adjusted to an appropriate supply flow rate by the adjusting lever 35 and then fed into the supply port 31. To fall.

The rice grains that have fallen into the supply port 31 are the spiral trochanter 6
Are sequentially sent to the grinding and polishing chamber 25. The rice grains in the grinding and polishing chamber 25 should be in contact with the peripheral surfaces of the upper, middle and lower grinding and polishing rollers 22, 20, 12 while actively flowing (revolving / spinning) under relatively low pressure. The surface layer is shaved by. That is, while flowing down from the slightly inclined splayed upper inclined portion 22a of the upper grinding and polishing trochanter 22 to the bending and polishing chamber 25a formed by the valley portion 43A and the resistance link 42A, the rice grain repeats active rotation and revolution. The surface of the rice grain is shaved in many ways. In addition, when passing through the bending and polishing chamber 25a, the rice grains on the side of the bran removal wire netting 24 move to the side of the grinding whitening trochanter 7 or, conversely, the rice grains on the side of the grinding whitening wire trochanter 7 move to the side of the bran removal netting cylinder 24. The chances of the rice grains coming into contact with the peripheral surface of the whitening roll by moving or increasing will increase.

As described above, the rice grains flow down while appropriately staying in the bending and polishing chamber 25a formed by the valley portion 43A and the resistance ring 42A, and the rice grains and the large-diameter portion 20a of the middle-stage grinding and polishing trochanter 20 on the upper stage side. In the grinding and polishing chamber 25 formed with the bran removal wire cylinder 24, the bran separated from the surface of the rice grain is subjected to the grinding action by the large diameter portion 20a, and the bran removal wire cylinder 2 is removed.
4 leaks to the bran removal chamber 29.

Further, by the fan 79 for collecting rice bran, the outside air flowing in from the air intake 39 of the hopper cylinder 32 is sucked into the suction pipe 4
0, the upper guide body 37, the lower guide body 38, the spiral trochanter 6 and the grinding whitening rotors 22, 20, 12 to blow the air from the air gaps 21 for enhancing the bran removing action. Promotes agitation of rice grains and, in addition, suppresses excessive rise in rice temperature.
The blast from the blast gap 21 may be taken from the lower end of the hollow main shaft 5 and supplied through the blast holes 18 and the round holes 17, or may be provided from both of them.

Thus, the rice grains that have been uniformly whitened for one grain or for all grains under an appropriate residence time are
The small diameter portion 12b of the lower grinding whitening trochanter 12 reaches the resistance plate 5
It is discharged from the discharge port 46 against 0, flows down the discharge gutter 47, and is supplied to the supply gutter 52 of the friction grain part 4. In addition, the bran that has leaked into the bran removal chamber 29 flows down through the bran removal chamber 60 of the rubbing and graining unit 4, and is sucked by the bran collecting fan 79 from the bran discharge port 77 of the bran collecting chamber 74 through the exhaust pipe 78. Is discharged.

The rice grains supplied to the supply gutter 52 of the friction grain refinement unit 4 are sent from the supply port 55 to the spiral rotator 8 by the screw conveyor 65, and are then sent to the friction whitening chamber 54 by the spiral rotator 8. In the rubbing and polishing chamber 54, the rubbing and whitening trochanter 9
Is whitened by the whitening effect caused by the rotation of. At that time, since the surface layer of the rice grains has already been cut by the grinding and polishing trochanter 7, the friction coefficient increases, so that the bran layer can be sufficiently peeled off by the rub and polishing trochanter 9.

By the suction of the bran collecting fan 79, the ventilation port 5
The bran-eliminating action is performed by the bran-blasting air blown out from the jet outlet 59 via the nozzle 8. Dust such as bran generated by the whitening action in the friction and polishing chamber 54 is discharged into the bran removing chamber 60 from the through hole of the bran removing wire mesh cylinder 53, and is collected from the bran outlet 77 of the bran collecting chamber 74 through the exhaust pipe 78. It is sucked and discharged by the bran fan 79.

The refined rice grains reach the discharge port 56, flow out while resisting the resistance plate 61, flow down the discharge trough 63, and are discharged to the outside of the machine.

In this embodiment, the grinding grain portion and the friction grain portion are combined, but the grinding grain portion and the grinding grain portion are combined, and the friction grain portion and the friction grain portion are combined. May be a combination of. Further, a plurality of vertical-axis type grain refiners may be arranged to constitute a continuous-seed type grain refiner.

[0036]

According to the vertical axis grain refiner of the present invention,
The upper part of the machine frame is formed in the first refined grain part for feeding the grain downwards, and the lower part is formed in the second refined grain part for feeding the grain upwards, and the main spindle is provided with the first white trochanter and the second white trochanter. Since the first polishing chamber and the second polishing chamber are not formed continuously due to the mounting structure, it is possible to easily finely adjust the polishing degree. Further, since it is a vertical shaft type, the diameter of the grinding whitening trochanter can be greatly increased as compared with the horizontal axis type, so that the whitening ability can be greatly improved. Furthermore, by providing a plurality of fine grain parts in one machine frame, the installation area can be reduced and the manufacturing cost can be significantly reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a vertical type grain refiner embodying the present invention.

FIG. 2 is a cross-sectional view of a grinding and grain refining unit.

FIG. 3 is a plan sectional view of a grinding and grain refining unit.

FIG. 4 is a cross-sectional view of a conventional grain refiner.

[Explanation of symbols]

 1 Vertical-axis type grain mill 2 Machine frame 3 Grinding grain part 4 Friction grain part 5 Hollow spindle 6 Spiral trochanter 7 Grinding white trochanter 8 Spiral trochanter 9 Friction whitening trowel 10 Bearing part 11 Rotating bottom plate 12 Lower grinding Whitening trochanter 13 Mounting ring 14 Arm 15 Opening 16 Boss 17 Round hole 18 Blaze hole 19 Color 20 Middle-stage grinding Whitening trochanter 21 Jet blast gap 22 Upper-stage grinding whitening trowel 23 Bolt 24 Debrasion wire mesh cylinder 25 Grinding whitening Chamber 26 Strut 27 Strut cover 28 Bran removal chamber cover 29 Bran removal chamber 30 Supply cylinder 31 Supply port 32 Hopper cylinder 33 Input port 34 Supply amount adjusting device 35 Adjusting lever 36 Open 37 Upper guide 38 Lower guide 39 Air intake 40 Ventilation pipe 41 Ventilation port 42 Resistance ring 43 Valley 44 Through hole 45 Knob bolt 46 Discharge port 47 Discharge gutter 48 Horizontal axis 49 Weight lever 50 Resistance plate 51 Weight 52 Supply gutter 53 Debris wire netting cylinder 54 Friction whitening chamber 55 Supply port 56 Discharge port 57 Stirring protrusion 58 Ventilation port 59 Jet opening 60 Descaling chamber 61 Resistance plate 62 Weight lever 63 Weight 64 64 Conveyor gutter 65 Screw conveyor 66 Pulley 67 Electric motor 68 Pulley 69 Belt 70 Pulley 71 Electric motor 72 Pulley 73 Belt 74 Collecting rice bran chamber 75 Blade mounting cylinder 76 Kneading blade 77 Bran discharge port 78 Exhaust pipe 79 Collecting rice fan 80 Exhaust gutter 81 Grinding machine 82 Spindle 83 Spiral rotator 84 Grinding white trochanter 85 Intermediate spiral trochanter 86 Friction whitening trochanter 87 Eliminating bran wire netting cylinder 88 Grinding whitening chamber 89 Eliminating bran wire netting cylinder 90 Friction whitening chamber 91 Supply port 92 Discharge port 93 Supply hopper 94 Resistance plate 95 Weight

Claims (2)

[Claims] 1. An upper part of the machine frame is a first grain refining section, and a lower part is a second grain section.
The first spindle is rotatably erected so as to communicate with the inside of the first bran removal wire netting cylinder of the first grain refining part and the second bran removal wire netting cylinder of the second grain refining part. A spiral trochanter and a first white trochanter, and a second spiral trochanter and a second white trochanter are respectively mounted axially, and a gap between the first white trochanter and the first bran removal wire netting is a main part. 1. The upper end of the whitening chamber is the grain supply part, the lower end is the grain discharge part, and the lower end of the second whitening chamber is the main part which is the gap between the second whitening trochanter and the second bran removal wire netting cylinder. In the vertical axis grain refiner having the grain supply unit as the grain supply unit and the upper end as the grain discharge unit, the grain discharge unit of the first grain refinement unit is connected to the grain supply unit of the second grain mill as a supply path. Vertical axis type grain mill characterized by being contacted via 2. The vertical shaft type grain mill according to claim 1, wherein the first white trochanter is a grinding white trochanter and the second white trochanter is a friction white trochanter.