KR0147205B1 - Vertical milling machine - Google Patents

Abstract

A longitudinal axis type ballast consisting of a first curved portion and a second curved portion positioned below the first curved portion that share a main axis extending in a vertical direction, wherein the first curved portion has a supply portion of the grain on the upper end side of the first curved portion. The second curved portion has a supply portion of the grains to be curved in the second curved portion at the lower side and the discharge portion of the grains curved in the second curved portion is at the upper side. In the vertical axis type milling machine, which also has a grain feeding path connecting the grain discharge portion of the first curved portion to the grain supply portion of the second curved portion, independent adjustment of the degree of correctness (whiteness) of the first and second curved portions is easily achieved. It can be done.

Description

Vertical axis mill

1 is a vertical cross-sectional view of a vertical milling machine according to a preferred embodiment of the present invention.

FIG. 2 is an enlarged cross-sectional view of FIG. 1 corresponding to a cross section taken along line II-II of FIG. 3;

3 is a cross-sectional view of FIG. 2 along the line III-III of FIG.

4 is a diagram of a possible alternative to the first and second bends of a vertical bend.

5 is a cross-sectional view of a conventional horizontal machine.

* Explanation of symbols for main parts of the drawings

3, 4: curved portion 5: the main axis

6: spiral roll 7: grinding whitening roll

12, 20, 22: grinding white roll body 32: hopper barrel

34: grain supply adjusting mechanism 42a, 42b, 42c: resistance ring

46: outlet 47: discharge gutter

58: vent 59: blowhole

74: collection room 79: collection fan

TECHNICAL FIELD This invention relates to the longitudinal-shape-type bend machine which has a 1st bend part and a 2nd bend part.

BACKGROUND ART Conventionally, a grain mill having a grain mill having two or more grain rolls or grain rolls attached to one main shaft is known. For example, US Patent No. 3,485, 280 discloses a horizontal axis type correcting machine 81 as shown in FIG. In the straightener 81, the spiral roll 83, the grinding white roll 84, the middle spiral roll 85, and the friction white roll (in order of right to left in the fifth drawing) are arranged on the main shaft 82 extending horizontally. 86) is attached. Around the grinding whitening roll 84, the steelmaking steel mesh 87 which cooperates with this grinding whitening roll 84, and forms the annular grinding whitening chamber 88 is provided, and the friction whitening roll 84 is provided. Around the 86, a steel mesh tube 89 for steel making, which cooperates with the friction whitening roll 86 to form an annular friction whitening chamber 90, is provided. One end (right end in FIG. 5) of the grinding whitening chamber 88 is connected to the supply port 91 of the correcting machine 81, and one end (left end in FIG. 5) of the friction whitening chamber 90 It is connected to the outlet 92 of 81. A supply hopper 93 is attached to the supply port 91, and a resistance plate 94 is attached to the discharge port 92. The resistance plate 94 is attached with a weight for adjusting the pushing pressure.

In the conventional curved machine 81 shown in FIG. 5, the correcting is performed as follows.

When the grain to be fixed is fed from the feed hopper 93 to the spiral roll 83 near the feed roll 91, the grain is sent in a substantially horizontal direction by the spiral roll 83, and rotates in the grinding polishing chamber 88. The grinding operation is performed by the grinding grinding roll 84, and the grinding is performed. The grain refined in the grinding white thread 84 is sent to the friction white thread 90 by the intermediate spiral roll 85, and is subjected to the whitening action by the friction white thread 86 rotating in the friction white thread 90. It is more innocent. The grain refined in the friction polishing chamber 90 is discharged out of the machine from the discharge port 92 while resisting the pressing pressure of the resistance plate 94.

In the conventional refiner 81 as described above, the resistance plate is provided only at the discharge port 92 of the friction curved portion constituting the second curved portion, and constitutes the discharge portion and the second curved portion of the grinding curved portion constituting the first curved portion. Since the supply portion of the friction curved portion to be completely communicated in practice, the degree of whitening at the two curved portions cannot be adjusted independently.

And in the conventional horizontal axis | shaft type milling machine 81 mentioned above, since the grinding whitening roll 84 and the friction whitening roll 86 are attached to one shaft 82, the grinding whitening roll 84 ) Is larger than the diameter of the friction polishing roll 86. This is because the peripheral speed of the grinding polishing roll 84 is made relatively larger than the peripheral speed of the friction polishing roll 86. However, in a transverse type grain machine such as a ware, when the grinding whitening roll is enlarged, it is difficult to connect the grains evenly over its entire circumference, and its diameter is limited to about 30 cm. Therefore, there is no limit to the enlargement of the apparatus 81, and it was difficult to greatly improve the whitening ability.

An object of the present invention is to solve a part or more of the drawbacks of the above-described conventional grain mill.

One object of the present invention is to provide a grain machine which can easily adjust the graininess of grains.

Another object of the present invention is to provide a grain machine capable of increasing the grain roll and increasing the whitening capability.

According to the present invention, at least part of the above object is a longitudinal-shaft type corrector composed of a first curved portion and a second curved portion positioned below the first curved portion, which share a main axis extending vertically. And a grain supply portion at the upper end side thereof, a discharge portion of the grains grained at the first curved portion portion at the lower end side thereof, and a second grain portion portion at the lower end side thereof, The vertical-shaft type grain machine which has the discharge part of the grain curved by this 2nd curved part at the upper end side, and has an grain feeding path which connects the grain discharge part of a 1st curved part to the grain supply part of a 2nd curved part. Is achieved.

The grain machine of the present invention is a vertical axis grain machine, which can easily increase the size of the grain rolls forming the grain portion.

And since the supply part of the grain of the 2nd curved part located in the lower side is provided in the lower end of a 2nd curved part, in other words, the grain discharge part of the 1st curved part of the grain refiner of the lower curved part of a 2nd curved part is provided. Since it has an grain feeding path connected to a supply part, since it is possible to attach a resistance means for adjusting the correctness degree of the first curved part (including the grain discharge part of the first curved part) to this grain feeding path (including the grain discharge part of the first curved part), Independent adjustment of the degree of adequacy of the first and the second curved portions (whiteness) can be easily performed.

That is, the grain supply unit located at the upper end of the first curved portion is whitened at the first curved portion while the supplied grain flows downward to the grain discharge portion at the lower end thereof, and thereafter, the grain is supplied from the grain discharge portion of the first curved portion. It is supplied to the grain supply part of a curved part. Here, since the grain supply part of the 2nd curved part located under the 1st curved part is provided in the lower end of a 2nd supply part, there is a sufficient length between the grain discharge part of a 1st curved part, and the grain supply part of a 2nd curved part. A grain supply passage can be formed, and for example, the upper end, in other words, sufficient space is secured in the grain discharge portion of the first curved portion of the grain supply passage, so that the pressure pushing against the grain in the first curved portion in this space By installing a resistance means for adjusting the, it is possible to adjust the degree of the curve in the first curve. The grains sent to the grain supply part of a 2nd curve part are curved in a 2nd curve part while sending upward, and are discharged | emitted from the grain discharge part in the upper end of a 2nd curve part. The fineness of the grains in the second curved portion can be adjusted by providing resistance means for adjusting the pushing pressure for the grains in the second curved portion in the grain discharge portion at the upper end of the second curved portion.

Further, in the grain machine of the present invention, since a plurality of grain portions are provided in the frame of one grain machine, that is, in one mold, the installation area of the whole grain machine can be reduced, thereby reducing the production cost of the grain machine. can do.

In the grain machine of the present invention, preferably, the first grain portion includes a first resisting means for adjusting the degree of grain grains in the first grain portion in the grain discharge portion, and the second grain portion includes: The grain discharge part is provided with a second resistance means for adjusting the degree of grain curvature in the second grain part.

In this case, since the degree of curvature in the first and second curved portions can be easily adjusted independently by the first and second resistance means, respectively, the first and second curved portions are each curved ( The grain refinement can be carried out with the optimization of the grain refiner so as to achieve the maximum functionality.

In a preferred embodiment of the present invention, the first curved portion, the first curved roll attached to the upper portion of the main shaft, and the first porous roll for steelmaking forming a first fine white thread in cooperation with the first curved roll, And a second curved roll attached to the lower portion of the main shaft, and a second cylindrical cylindrical body for forming a second fixed chamber in cooperation with the second curved roll.

The grains supplied to the first grain chamber from the grain supply portion of the first grain portion are sent down in the first grain chamber, and subjected to graining (whitening) action by the rotating first grain roll. The refined grains are sent back from the grain discharge portion of the first curved portion to the grain supply portion of the second curved portion through the grain feeding path, and are sent upwards in the second curved chamber. The fine grains are collected and then discharged out of the grain refiner from the grain outlet at the top of the second grain chamber. And when the grains in the 1st and 2nd whitening room were grained, the powdery bodies, such as bran, which generate | occur | produced were the 1st and 2nd steelmaking multi-park bodies, respectively. Through a hole in the room, it is released out of the white room and collected.

In one preferred embodiment of the present invention, the first curved roll consists of one of the grinding curved rolls and the friction curved rolls, and the second curved roll consists of one of the grinding curved rolls and the friction curved rolls.

When the grain roll is made of the grinding grain roll, the grains are whitened by the grinding grain (whitening) action on the grains of the grain roll which is being rotated, and when the grain roll is the friction grain roll, the grain is being rotated. It is whitened by the friction bending effect on the grain of this grain roll. The combination of the grinding grain roll and / or the friction grain roll is selected according to the kind of grain to be grained and the state of the surface layer and the state of grain to be obtained by the grain.

In one preferred embodiment of the present invention, the grain feeding path extends substantially vertically downward from the grain discharge portion of the first curved portion to the grain supply portion of the second curved portion.

The foregoing and other objects, features and advantages of the present invention will become apparent from the following description of the preferred embodiments with reference to the accompanying drawings.

In FIGS. 1-3, the longitudinal-shaft type | formula 1 has the grinding curved part 3 as a 1st curved part in the upper part of the machine frame 2, and the 2nd curved part in the lower part of the machine frame 2; It has a friction curved portion as. The hollow main shaft 5 of which the lower end was opened is attached to the machine frame 2 freely through the bearing members 10, 10, and 10. As shown in FIG. The main shaft 5 extends vertically. The upper part of the spindle 5 is attached with the spiral roll 6 and the grinding whitening roll 7 as the first whitening roll, and the lower part of the spindle 5 has a frictional whitening roll as the spiral roll 8 and the second whitening roll ( 9) is attached.

In this machine 1, since a plurality of machine parts 3 and 4 are provided in one machine frame 2, not only the installation area of the whole machine can be reduced, but also the manufacturing cost is greatly reduced. Can be reduced.

First, the detailed structure of the grinding curved part 3 is demonstrated. In FIG. 1, the rotating base plate 11 is fixed to the main shaft 5, and the bottom grinding wheel white body 12 attached to the main shaft 5 is attached to the rotating base plate 11 by a mounting ring ( It is installed and fixed through 13). As shown in FIG. 2, the lowest grinding whitening roll body 12 consists of the large diameter part 12a, the small diameter part 12b, and the upper inclination part 12c. As shown in FIG. 1 and FIG. 2, the lowermost whitening roll element 12 is supported by the mounting ring 13 whose side end part has a flange part. The inner circumferential wall of the mounting ring 13 is attached to the small diameter portion of the lowermost whitening roll body 12.

The lowermost grinding whitening roll body 12 consists of a metal inner support part 12e and the grinding grindstone outer grinding part 12f, and the inner support part 12e has the projection part 16 which has the hole 17. And a plurality of arms 14 having openings 15 therebetween. The hole 17 of the projection 16 communicates with a blow hole 18 of the hollow spindle 5 in which the projection 16 is fitted.

On the lowermost grinding roll body 12, a collar or a ring 19 fitted to the shaft 5 is provided, and on this collar 19, the middle (intermediate) of the structure almost the same as that of the lowermost white roll body 12 is provided. The projection part 16 of the grinding roll element 20 of () is formed. The projection 16 of the intermediate grinding roll body 20 is also provided with an annular hole 17 communicating with the blow hole 18 of the hollow spindle 5, and the opening 15 between the arms 14. Is formed. More specifically, the intermediate grinding roll body 20 has a large diameter portion 20a, a small diameter portion 20b, and a lower inclined portion 20d and a large diameter portion formed between the outer grinding portion 20f. It has the upper inclination part 20c formed on 20a. The gap 21 for blowing is formed between the lower end of the small diameter part 20b of the intermediate grinding whitening roll element 12, and the upper end of the lowest grinding whitening roll element 12. As shown in FIG.

On the protrusion 16 of the intermediate grinding roll body 20, another collar 19 fitted to the shaft 5 is provided. On the collar 19, another intermediate grinding roll body fitted to the shaft 5 is installed. The projection 16 of 12 is provided. This intermediate grinding roll body 20 has the same structure as the intermediate grinding roll body 20 on the lowest grinding roll body 12. That is, this intermediate grinding roll body 20, more specifically, the outer grinding part 20f, has a large diameter portion 20a, a small diameter portion 20b, an upper inclined portion 20c and a lower inclined portion 20d. It is provided, and the gap 21 for blowing is formed between the lower end of the said small diameter part 20b, and the upper end of the lower intermediate whitening whitening roll body 20 on the lowest grinding whitening roll body 12. On the protruding portion 16 of the upper middle grinding whitening roll 20, another collar 19 fitted to the shaft 5 is provided, and on the collar 19, the uppermost grinding inserted into the shaft 5 is provided. The protrusion part 16 of the roll body 22 is provided.

In this example, although two intermediate grinding whitening roll bodies 20 are provided, the number of intermediate grinding whitening roll bodies 20 may be provided through the collar or the spacer 19, and one or more may be three or more. In some cases, the intermediate grinding whitening roll body 20 may not be present.

The uppermost grinding whitening roll body 22 consists of the inner support part 22e of a metal body, and the outer grinding part 22f of a grinding grindstone body, The inner support part 22e is the said protrusion part which has the round hole 17. It consists of the several arm 14 which has 16 and the opening part 15 in between. The hole 17 of the projection 16 communicates with the blowhole 18 near the upper end of the hollow spindle 5 provided with the projection 16 interposed therebetween. The outer outer grinding portion 22f of the uppermost grinding whitening roll body 22 is slightly larger downwardly, and has a large diameter portion 22a, a small diameter portion 22b, a large diameter portion 22a, and a small diameter portion of the upper to frustoconical object. There is a lower inclined portion 22b between the lower portion 22b and a gap for blow-up 21 between the lower end of the small-diameter portion 22b and the upper end of the intermediate grinding whitening roll element 20 located immediately below it. Formed.

On the projection part 16 of the uppermost grinding whitening roll body 22, the projection part of the above-mentioned hollow spiral roll 6 provided in the shaft 5 is provided. The outer circumference of the spiral roll 6 is formed with a feed screw 6a. The spiral roll 6 is pressed and fixed toward the uppermost grinding roll body 22 by a bolt 23 screwed to the upper end of the hollow spindle 5.

Steelmaking porous body 24 with a slight gap around the large diameter portions 12a, 20a, 22a of the lowermost grinding whitening roll 12, the intermediate grinding whitening roll 20, and the uppermost grinding whitening roll body 22 Is provided, and the grinding whitening chamber 25 as the first whitening to whitening chamber is formed between the steelmaking porous body 24 and the whitening roll bodies 12, 20, and 22 (second). Help and third). More specifically, the steelmaking porous body 24 is made up of four divided portions 24d, and each divided portion 24d is placed upright around the grinding white roll bodies 12, 20, and 22. The four pillars 26 are supported at both edges 24a and 24a. Each strut 26 is covered with a U-shaped strut cover 27 in cross section. Between the struts 27 and 27 adjacent in the circumferential direction, an arc-shaped steelmaking chamber cover 28 having a circular cross section is formed, and the cover 28 has a corresponding steelmaking porous body 24 to a divided portion thereof. The steelmaking chamber 29 is formed in cooperation with 24d.

The diameters of the large diameter portions 12a, 20a, 22a of the grinding polishing roll bodies 12, 20, and 22 vary depending on the throughput per unit time, but the throughput per unit time is about 40 to 50 mm in the case of about 8 tons / hour. to be. Since the vertical axis | shaft type | shaft with which the main shaft 5 extends perpendicularly | vertically is this rectifier 1, compared with the case of a horizontal type | mold, it can enlarge the outer diameter of the grinding backing roll 7 to its body.

On the support | pillar 26, the supply cylinder 30 which has the supply port 31 in the upper end surrounding the spiral roll 6 is provided and fixed. At the upper end of the supply port 31, a hopper cylinder 32 having an inlet 33 at the upper end is fixed. In the hopper cylinder 32, the grain supply amount adjustment mechanism 34 which consists of the fixed plate 34a which has a some opening part, and the rotary motion plate 34b which can be rotated by the control lever 35 which has a some opening part. Is installed. And the opening part 36 is formed in the center part of the stationary plate 34a and the rotary motion plate 34b. The conical upper guide body 37 without a hollow bottom is provided above this opening 36, and the lower guide body 38 of a cone object is provided below the opening 36. As shown in FIG. In addition, an air duct 40 is provided on the circumferential wall of the hopper barrel 32 to receive outside air from the plurality of air intakes 39 formed at equal intervals in the upper guide 37. And the vent port 41 is formed in the position below the lower guide body 38 in the upper wall surface of the spiral roll 6. As shown in FIG.

In addition, resistance rings 42a, 42b, and 42c are provided on the inner circumferential surface of the steelmaking porous body 24. More specifically, it is formed by the lower inclined portion 22d and the small diameter portion 22b of the uppermost grinding whitening roll body 22 and the upper inclined portion 20c of the intermediate grinding whitening roll body 20 positioned directly below it. A resistance ring 42a is provided so as to face the valley 43a that is to be provided, and the lower inclined portion 20d and the small diameter portion 20b of the intermediate computed white roll body 20 and another intermediate grinding white positioned directly beneath it. The resistance ring 42b is provided so as to face the valley portion 43b formed as the upper inclined portion 20c of the roll body 20, and the lower inclined portion 20d of the lower intermediate grinding fine roll body 12 and The resistance ring 42c is provided so that it may face in the valley part 43c formed by the small diameter part 20b and the upper inclination part 12c of the grinding grinding roll body 12 of the lowest end.

The cross sectional shape of each of the resistance rings 42a to c almost resembles the cross sectional shape of each of the bones 43a to c, as is apparent from FIG. 2, and the resistance rings 42a to c and the valleys 43a to c are The whitening chamber 25 in between consists of the whitening chamber 25a which bends windingly from the upper side to the lower side.

Each of the resistance rings 42a to c is pressed and fixed to the inner circumferential surface of the porous steel body 24 for steelmaking by the knob bolts 45 inserted through the through holes 44 of the indexes 26. And since the inner diameter A of the hole 44 is considerably larger than the diameter of the knob bolt 45, the knob bolt 45 can move up and down with respect to the support 26 by the difference of this diameter. Since the attaching position of each resistance ring 42a-c can be adjusted in the up-down direction, the resistance with respect to the flow of a grain in the bending whitening chamber 225a can be adjusted.

A discharge port 46 is formed at the lower end of the grinding white room 25, and a discharge trough 47 is provided below the discharge port 46. A horizontal shaft 48 is attached to the discharge trough 47, and the horizontal shaft 48 is provided with arm portions 949a and 49b so as to be rotatable about the horizontal shaft 48 with respect to the discharge trough 47. The weight lever 49 is attached. At the distal end of the arm portion 49a of the weight lever 49, a resistance plate 50 capable of blocking the discharge port 46 is rotatably attached to the arm portion 49b of the weight lever 49. 51 is attached so that the arm part 49b can move in the longitudinal direction. In this example, the pressure pushing against the grains in the whitening chamber 25, and thus the whiteness of the grains in the grinding whitening chamber 25, the adjustable resistance means includes the shaft 48, the weight lever 49, It consists of the resistance plate 50 and the weight 51. Moreover, the grain discharge part is comprised by the discharge port 46 and the discharge trough 47 which also functions as a grain feeding path. The discharge trough 47 is connected to the supply trough 52 of the friction curved portion 4. The means for adjusting the pushing pressure applied to the resistance plate 50 may be any means for adjusting the force instead of the combination of the lever 49 and the movable weight 51.

As shown by the virtual line in FIG. 1, an elastic means 51a such as a tension spring may be provided between the weight lever 49 and the discharge trough 47. As shown in FIG. In some cases, the elastic force such as the elastic modulus of the elastic means 51a may be adjustable. For example, in the latter case, no weight may be used.

Next, the friction curved part as a 2nd curved part is demonstrated. The friction curved portion 4 is frictional with the spiral roll 8 attached to the lower end of the hollow spindle 5 and the friction polishing roll 9 attached to the lower portion of the hollow spindle 5 at the upper portion thereof. The steelmaking porous body 53 as the steelmaking porous body for steelmaking which extends in the vertical direction so as to form the frictional grain (whitening) seal 54 around the whitening roll 9 is provided. The frictional whitening chamber 54 is connected to the supply port 55 from the lower end thereof, and to the discharge port 56 near the upper end thereof. The friction whitening roll 9 is agitating the grains in the friction whitening chamber 54 with the stirring projections 57 so as to face each other. The hollow spindle 5 has a plurality of vent holes 58 formed therein, through which the vent holes 58 pass through the blowholes 59 of the rubbing roll 9 and the rubbing chamber 54 and the steelmaking chamber. It is connected to 60. And, for example, friction friction machine itself is known from US Pat. No. 4,843,957, which is incorporated herein by reference.

The discharge port 56 is provided with a resistance plate 61 for adjusting the graininess of the grain, and the weight attached to the weight lever 62 which can be rotated around the horizontal axis 62b like the weight lever 49 ( By adjusting the position of 63, the whiteness of the grains in the friction whitening chamber 54 can be adjusted. A discharge trough 80 is connected to the discharge port 56, and a transfer trough 64 is connected to the supply port 55, respectively. In the conveyance trough 64, the screw conveyor 65 extended horizontally is provided, and the pulley 66 is attached to the end of this conveyor 65. As shown in FIG. The belt 69 is caught between the pulley 66 and the pulley 68 attached to the electric motor 67. The belt 73 is caught between the pulley 70 attached to the mid-curve spindle 5 and the pulley 72 attached to the main motor 71.

In the lower side of the steelmaking chamber 60, the collecting chamber 74 connected with this steelmaking chamber 60 is formed, and the some scraping-out which was formed in the outer peripheral surface of the blade attachment cylinder 75 attached to the main shaft 5 was carried out. The blade 76 is located in the collection chamber 74. The bran discharge port 77 is formed in the bottom part of the steelmaking chamber 74, and the collecting fan 79 is connected to the front-end | tip of the exhaust pipe 78 extended from the bran discharge port. The steelmaking chamber 60 of the friction curved portion 4 is connected to the steelmaking chamber 29 of the grinding curved portion 3, and the steel collecting chamber 74 is connected to the steelmaking chamber 29 through the steelmaking chamber 60. Is connected.

In this bend machine 1, since the supply port 55 of the friction bend part 4 as a 2nd bend part located in the lower side is provided in the lower end of this friction bend part 4, Since a sufficient space is easily secured to the outlet 46 of the grinding curved portion 3 as the curved portion, the resistance means 46 to 51 for adjusting the whiteness of the grains in the grinding curved portion 3 are easily attached. By this resistance means, since the grain whiteness of the grains in the grinding grain portion 3 can be adjusted independently of the grain whiteness of the grains in the friction grain portion 4, it is easy to make delicate adjustments of grain whiteness. I can do it.

Next, the operation | movement of the preferred vertical axis | shaft type | mold grain mill 1 which concerns on this invention comprised as mentioned above is demonstrated to the example, taking the whitening of the rice grain as a grain as an example. As the grains, other grains such as wheat grains may be used instead of rice grains.

Before starting the whitening, the knob bolts 45 are used to adjust the up and down positions of the resistors 42a to c to adjust the falling resistance of the rice grains. Then, the position of the weight 51 on the arm portion 49b of the lever 49 is adjusted so that the resistance plate 50 attached to the tip of the arm portion 49a of the lever 49 opens the discharge port 46. The locking force, that is, the pressure that the resistance plate 50 exerts on the grains of rice at the outlet 46, in other words, the pressure applied to the grains of rice in the grinding white room 25 to the blocked state of the rice in the grinding white room 25. In other words, adjust the degree of whitening. In the same manner, the position of the weight 63 on the lever 62 is adjusted so that the resistance plate 61 attached to the tip of the lever 62 blocks the discharge port 56. That is, the resistance plate 61 is applied to the rice grains at the discharge port 56, that is, the pressure applied to the rice grains in the frictional polishing chamber 54 or the clogging state of the rice grains in the frictional polishing chamber 25. The degree of is adjusted independently of the degree of whitening in the grinding whitening chamber 25. Then, if desired, adjustment of the pushing force of each of the resistance plates 50 and 61 by each of the weights 51 and 63 to the degree of whiteness in each of the grinding and polishing chamber 25 and the friction and polishing chamber 54. You may also be in the process of whitening.

Then, by starting the main motor 71, the spiral roll 6, the grinding polishing roll 7, the spiral roll 8 and the friction polishing roll 9 are rotated through the hollow spindle 5, and at the same time, the electric motor By the start of the 67, the screw conveyor 65 is rotated. In addition, the collecting fan 9 is started.

Raw rice grain supplied from the chute (not shown) to the inlet 33, that is, the grain of rice to be curved in the grain machine 1, flows down evenly distributed in the circumferential direction by the upper guide body 37, and the adjustment lever Drop into feed port 31 at a suitable feed flow rate controlled by 35.

The grains of rice dropped into the supply port 31 are sequentially sent to the grinding white room 25 by the spiral roll 6. The grains of rice in the grinding whitening chamber 25 are polished and polished under relatively low pressure, i.e., in a state in which they push each other at relatively small pushing pressures, while actively flowing, that is, turning (rotating around the spindle 5) and rotating. The surface layer is scraped by the circumferential surface of the grinding whitening roll bodies 22, 20, 20, and 12 of the top, middle, and bottom of the roll 7 rubbing. More specifically, the grains of rice are formed from the upper slanted portions 22a of the uppermost grinding whitening roll body 22 by the valley portion 43a and the resistance ring 42a, and the upper portion of the curved whitening thread 25a. While flowing down, the grains of rice are actively rotated and rotated so that the surface of the grain of rice is multiply mowed. When the rice grains exit through the curved whitening chamber 25a, the rice grains may also move from the vicinity of the steelmaking porous body 24 toward the grinding whitening rolls 7, and conversely, near the grinding whitening rolls 7. Since it also moves toward the steelmaking porous body 24 from, the chance of rice grains in the whitening chamber 25 in contact with the circumferential surface of the whitening roll 7 increases.

In this way, the rice grains flow in the upper portion of the curved whitening chamber 25a defined by the valley portion 43a and the resistance ring 42a, while remaining appropriately. The degree of this stay and the average speed of the down flow depend on the magnitude of the pressure pushed by the resistance plate 50. In the grinding whitening chamber 25, in the part between the large diameter part 20a of the upper intermediate grinding whitening roll element 20, and the porous normal body 24 for steelmaking, a rice grain is ground by the large diameter part 20a. At the same time, the bran is separated from the surface of the rice grains and is discharged into the steelmaking chamber 29 through the hole 24b of the steelmaking porous body 24.

In addition, by the suction action of the steelmaking fan 79, the outside air introduced from the air intake port 39 of the hopper barrel 32 includes an air duct 40, an opening of the upper guide body 37, and a lower guide. Between the adjacent grinding white roll bodies through a space including the vent hole 41 of the spiral roll 6 and the opening 15 in the grinding white roll bodies 22, 20, 20, 12. Since it blows out from the gap 21 for blowing into the grinding white room 25, the steelmaking effect from the white room 25 can be improved, and the stirring of the rice grain in the white room 25 is promoted. And excessive rise of the temperature of a grain of rice can be suppressed. The outside air is also sucked from the lower end of the hollow spindle 5 by the suction action of the collecting fan 79, so that the blowhole 18 and the hole 17 of the protrusion 16 of the spindle 5 are closed. After passing through, it blows into the grinding white room 25 from the gap 21 for blowing between adjacent grinding white roll bodies. The outside air to be blown out from the gap 21 for blowing into the white room 25 may be formed by only one of the air inlets 39 of the hopper barrel 32 and the lower ends of the mid-curve spindles 5. It's okay.

In this way, under the appropriate residence time in the whitening chamber 25, the rice grains each white are evenly whitened pass through the small diameter portion 12b of the lowest grinding whitening roll body 12, and then pass through the resistance plate 50. It resists and is discharged | emitted from the discharge port 46, and also flows out the discharge groove 47 below, and is supplied to the supply groove 52 to the friction curved part 4.

On the other hand, the bran discharged in the steelmaking chamber 29 passes through the steelmaking chamber 60 of the friction curved part 4, and then passes through the bran discharge port 77 and the exhaust pipe 78 of the steelmaking chamber 74, The collection fan 79 is sucked out and discharged.

The grains of rice supplied to the supply troughs 52 of the friction bent portion 4 are sent from the feed port 55 to the spiral roll 8 by the screw conveyor 65 and frictionally polished by the spiral roll 8. It is sent upward to the thread 54. In the friction whitening chamber 54, the rice grains face each other under the rotating friction whitening roll 9, and are further whitened by the friction whitening action. That is, the rice grains are whitened to the desired whiteness in accordance with the frictional whitening action of the grains of the size depending on the pushing pressure of the outlet 56 by the resistance plate 61. Since the surface coefficient of the rice grain to be whitened in the friction whitening chamber 54 has already been cut by the grinding whitening roll 7, the friction coefficient is increasing. Therefore, peeling of the surface layer of the rice grain by the friction whitening roll 9 is prevented. It can fully perform effectively.

Then, by the suction of the collecting fan 79, the steelmaking from the friction whitening chamber 54 is performed by the air flow blown out from the blowhole 59 through the ventilation opening 58. That is, the fine powder such as bran generated by the whitening action in the friction whitening chamber 54 is discharged to the steelmaking chamber 60 through the hole 53a of the porous normal body 53 for steelmaking with the steelmaking wind. Moreover, it is sucked and discharged | emitted by the collection fan 79 from the bran discharge port 77 of the collection chamber 74, through an exhaust pipe.

The white rice reaches the discharge port 56 and flows out in response to the pressure pushed by the resistance plate 61.

The spilled rice grains flow down the discharge gutter 80 and are discharged out of the grain machine.

Incidentally, in the above embodiment, an example in which the first curved portion is formed by the grinding curved portion 3 and the second curved portion is formed by the friction curved portion 4 has been described. In addition, the grain feeding part 33a is provided at the upper end side, and the grain feeding part 3a is provided with the grain discharge part 46a at the lower end side, and the grain feeding path 46a is provided at the grain discharge part 46a of the first curved part 3a. 47a) is provided with the grain | grain supply part 55a connected to 47a) at the lower end side, and has the 2nd curved part 4a provided with the grain | drain discharge part 56a at the upper end side, and the 1st curved part 3a of the vertical spindle 5 If the second curved portion 4a is formed on the lower end side of the main side 5 at the upper end side, both of the first and second curved portions 3a and 4a are ground curved portions. Alternatively, both may be friction curved portions, and the first curved portion 3a may be a friction curved portion, and the second curved portion 4a may be a grinding curved portion. The discharge parts 46a and 56a are provided with resistance means for adjusting the degree of whitening of the grains in the first and second curved parts 3a and 4a, respectively.

The grinding bent portion and / or the friction bent portion are disclosed in U.S. Pat. It may be replaced by the corresponding parts of the grinding machine and / or the friction machine.

For example, the grinding grain chamber may be made of a simple cylindrical or toric grain white chamber instead of the curved grain white chamber 25a. And humidifying air may be introduce | transduced into the friction whitening chamber 54.

In addition, a plurality of longitudinal axis type grain mills 1a may be provided so as to be connected in series, and the grains of rice may be passed through the plurality of grain mills to be whitened.

Claims (5)

Longitudinal type-shape composition which consists of the 1st milling part (3; 3a) and the 2nd bend part (4; 4a) located under this 1st bend part (3; 3a), sharing the main axis extended vertically. As a vertical milling machine, the first curved portions 3 and 3a are arranged to supply the supply portions 31-34 and 33a of cereal grains to the upper end thereof, and to the first curved portions 3 and 3a. The discharge portion 46; 46a of the granulated grain is disposed at the lower end side thereof, and the second curved portion 4; 4a is provided with the supply portion 55; 55a of the grain to be curved in the second curved portion 4; 4a. On the lower end side, it has the discharge part 56; 56a of the grain to be curved by this 2nd curved part 4; 4a at the upper end side, The grain discharge part 46 of the 1st curved part 3; 3a; A longitudinal axial type grain mill further comprising a grains passage (47, 52; 47a) for connecting 46a) to the grain supply portion (55; 55a) of the second curved portion (4; 4a). The degree of milling of the grains in the first curved portion (3; 3a) according to claim 1, wherein the first curved portion (3; 3a) is provided to the grain discharge portions (46; 46a). First resistance means (48-51) for regulating the second curved portions (4; 4a) in the grain discharge portions (56; 56a) in the second curved portions (4; 4a). A longitudinal axis type correcting machine having second resistance means (61-63) for adjusting the degree of correcting grains of grain. 3. The first curved portion (3; 3a) is configured to cooperate with the first curved roll (7) and the first curved roll (7) attached to the upper part of the axis, and thus the first curved chamber is formed. A second curved roll 9 and a second curved roll having a first cylindrical steel body 24 for forming and having a second curved portion 4; 9) A longitudinal axis type milling machine having a porous cylindrical body 53 for forming a second steel mill in cooperation with the second steel mill. The method of claim 2, wherein the first curved roll is made of one of the grinding curved rolls (7) and the friction curved rolls (9), and the second curved roll is made of one of the grinding curved rolls (7) and the friction curved rolls (9). Vertical axis corrector. The grain feeding part of claim 1, wherein the grain feeding paths 47, 52, 47a are separated from the grain discharge parts 46; 46a of the first curved parts 3; 3a. Longitudinal axially curved machine extending almost vertically downward to (55; 55a).