JP4666725B2 - Raw rice roll pulverization method and pulverizer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a roll pulverization method and a roll pulverizer for raw material rice, and the particle size of the material to be pulverized can be freely adjusted, and particularly suitable for pulverization of raw rice for rice crackers and the like.
[0002]
[Prior art]
In conventional roll crushers, the particle size of the powder can be varied by increasing or decreasing the input amount of raw rice, and the smaller the input amount, the finer the particle size of the powder becomes. However, how many crushers are used? Will also have to prepare.
[0003]
In the setting of the milling particle size of the conventional pulverizer, the roll pressure adjusting handle is rotated in the tightening direction, and the pressure spring is gradually compressed via the pressure interposing metal fitting. The position where the slide roll moves to the fixed roll side and touches in the same way on the left and right is the origin. And the scale of the rotation speed indicator attached in the roll pressing adjustment handle is set to zero. Naturally, when raw rice is put in as it is and the crusher is operated, the pressure between the rolls is weak and the powder becomes coarse. When the required grain size is desired, the pressure adjustment handle is tightened, but it varies depending on the amount of raw rice added and the amount of water added, and requires a sense, skill and experience. As the pressure contact force increases, the slide roll is pressed directly against the fixed roll, which causes a problem that noise is generated.
[0004]
[Problems to be solved by the invention]
Therefore, the present inventor has developed a roll crushing method and a roll crusher that can freely adjust the particle size of the powder regardless of the amount of raw rice added and the amount of water added.
[0005]
[Means for Solving the Problems]
According to the present invention, a hopper having an exit along the width of the roll is provided on a horizontally disposed roll crusher, and a spiral grooved shaft having a width substantially equal to the roll width is attached to the outlet of the hopper, and the grooved shaft is mounted on the grooved shaft. A chute for supplying raw rice is provided in the hopper, and the raw rice roll is fed on the chute by a conveying means such as a conveyor. In the raw rice roll crusher, the chute in the hopper is transferred from the conveying means. Forming a supply path for raw rice through the spiral grooved shaft to the roll crusher, and controlling the amount of raw rice supplied to the roll crusher by keeping the amount of raw rice on the chute in a certain range The present invention relates to a method for pulverizing raw rice rolls.
[0006]
In order to keep the amount of raw rice on the chute in a certain range in the raw rice supply channel, the height of the raw rice on the chute is always checked and the speed of the conveying means such as a conveyor is controlled by a photoelectric switch or the like. It is effective to shift.
[0007]
In addition, the above spiral grooved shaft is formed symmetrically on the shaft surface so that the raw rice is fed toward the center of the shaft, and the raw rice can be supplied evenly over the entire roll width of the roll crusher. .
[0008]
The press roll interval of the press roll set of the present invention is adjusted using the screw mechanism of the lead screw and the slave screw in the first and second press roll sets, and the third and subsequent steps are linear motions such as an air cylinder. It is convenient to adjust the pressure-contact roll interval using a device. For example, in the case of hard baking, if the second stage is sufficient, the third and subsequent press contact roll groups are configured so that they can be operated with an air cylinder open. For general milling of rice crackers, for example, use a roll set up to the third stage and read the movement amount of the slide roll with a sensor to move the air cylinder (or hydraulic cylinder is possible) automatically or manually. A configuration is also possible in which the pressure (for example, 60 mesh in the third stage and 100 to 150 mesh in the fourth stage) can be changed.
[0009]
Further, the present invention uses a plurality of roll pulverizers composed of a set of a fixed roll and a slide roll pressed against the fixed roll to obtain a fine powder of, for example, 300 mesh having a fine particle size, from an upper set roll to a lower set roll. And a multi-stage roll pulverizer that allows the material to be pulverized to pass through, and a roll pulverization method for raw rice that performs reliable setting of the roll interval and forced cooling of the rolls for each set of rolls in each stage.
[0010]
In order to produce 300-mesh ultrafine powder using a multi-stage roll as described above, an appropriate pressure contact force is set for each multi-stage assembly roll, and the rotation difference between the fixed roll and slide roll of the assembly roll is set. Set. For example, the fixed roll is 80 rotations / minute, the slide roll is 60 rotations / minute, and the pulverization and milling are performed by the grinding action by the rotation difference.
[0011]
In addition, the rotation speed of the first roll is set, and the rotation speed of the second roll is increased more than that. This is because the bulk density increases as the particles become finer. This is a setting necessary to further refine the granularity.
[0012]
In addition, if the milling is performed by the pressure contact of the knife mounted to remove the powder adhering to the roll surface and the rotation difference between each roll, the frictional heat is naturally generated and the roll is heated. When the work is performed for a long time, the heat becomes extremely high, and the heat causes the powder to adhere firmly to the roll and is difficult to peel off. In addition, the heat causes the powder to be discolored or deteriorated.
[0013]
Further, in a roll pulverizer that is preferably set to increase the speed if going to the lower stage, the higher the number of stages, the higher the temperature of the roll.
[0014]
In the roll crusher of the present invention, in order to remove this heat, a roll having a hollow structure capable of circulating cooling water from one end side to the other end side is used to forcibly cool by circulating cooling water inside, and a conventional roll type This makes it possible to mill very fine powder for rice crackers, which has been considered difficult with this mill.
[0015]
In addition, a motor with a reduction gear is attached to each roll so that the speed can be individually changed by an inverter.
[0016]
Further, the present invention can set a movement limit point by using a screw-type dog for electrically indicating the roll interval and a collar with a set screw for fixing the initial gap.
[0017]
Conversely, at the initial setting of the linear gauge, when determining the origin position when electrically displaying the roll interval, for example, the position where the roll interval is opened by 0.01 mm is set as the original position (zero point) and at the same time for fixing the dog Tighten and fix the threaded collar.
[0018]
The motor that rotates the fixed roll and the slide roll can be shifted, and the number of rotations can be freely selected.
A plurality of roll pulverizers of the present invention can be used. When a specified pulverizer has a specified particle size, a pulverizer equipped with a smaller air cylinder automatically opens the roll interval.
[0019]
Rice crackers come in soft (crispy and soft) and hard baked (crisp typified by Soka senbei), and can be used separately for hard ware and soft food based on 60 mesh. A soft product having a particle size of 200 mesh or more is also used by a contractor of 60 mesh or more.
[0020]
Cooling water is allowed to pass through the inside of the roll pulverizer to remove heat due to the friction of the roll, thereby preventing discoloration and alteration due to the heat of rice flour.
[0021]
The raw material to be ground in the present invention is rice, but other similar raw materials can be used. Washed raw rice (moisture of about 20-30%) was introduced into a hopper having a spiral groove shaft structure by a conveyor so that the conveyor speed could be changed so as to keep the raw rice in the hopper constant.
[0022]
【Example】
Example 1
As shown in FIG. 9-a and FIG. 9-b, the raw rice (101) immersed in water for 6-12 hours in a dipping tank and left to drain on a draining conveyor for 50-60 minutes is The raw material rice storage unit (hopper) (103) is charged by a conveyor belt (102) having a belt width.
In the hopper (103), the spiral grooved shaft (105) having the structure shown in FIG. 7 having the length of the roll width of the pulverizing roll (104) in the lower end discharge port and the raw rice is supplied onto the shaft (105). A chute (106) constituting a gate is provided, and the amount of raw rice on the chute (106) is set at a height using a combination of the photoelectric switch (107) and its detection hole (108). The speed of the conveyor belt (102) is always changed by inspection.
[0023]
Example 2
The roll crusher of the present invention will be described with reference to FIGS.
Adopting the double adjustment type roll pressing adjustment handle (6), the movement limit (5) of the bearing box (4) is determined just before the fixed roll (2) and the slide roll (1) come into contact with each other. The reference value for obtaining the particle size of the powder can be easily set.
[0024]
The double adjustment type roll pressing adjustment handle (6) tightens the lead screw (7) attached to the handle, moves the bearing box (4) to the moving limit (5) of the bearing box, and presses it against the contact point. The linear gauge attached to the sensor (15) for electrically displaying the roll interval shown in FIG. 3 is set to the 0 position, and then the lead screw handle is turned in the opposite direction. The lock nut (8) for the lead screw is fixed, and the handle of the slave screw (9) is further turned and tightened. 14) Align with 0.
[0025]
That is, the handle of the lead screw is tightened, the bearing box is moved to the bearing box movement limit point, and is pressed against the contact point (bearing box movement limit point). Then, the linear (dial) gauge installed and attached so as to come into contact with the fixing screw collar of the screw-type dog attached to electrically indicate the roll interval is zero-aligned.
Next, this time, the handle of the lead screw is turned in the opposite direction, and the lock nut for the lead screw is fixed when the display unit reaches an arbitrary value (for example, 1.0 mm). Of course, the left and right settings are the same. Next, turn the handle of the female screw (screw) and tighten it. The position where 0 is displayed on the monitor of the linear (dial) gauge this time is the 0 position of the weight type rotation index meter installed in the handle of the female screw. Match.
[0026]
The motor (21) that rotates the fixed roll (2) and the slide roll (1) can be shifted, and the number of rotations can be freely selected.
FIG. 2 is a cross-sectional view of the roll crusher and shows that the roll crusher is cooled by passing cooling water from the cooling water inlet (23) into the roll and exiting to the cooling water outlet (24).
[0027]
Example 3
The roll crusher of this invention is demonstrated in FIG.3, FIG.4, FIG.5, FIG.6 and FIG.
As shown in FIG. 3 and FIG. 4, it is an example in which a plurality of combinations are used. As a method of use, the vertical type is shown in FIG. 3, and the staggered arrangement type is shown in FIG. First, FIG. 3 shows four pulverizers arranged vertically. There is a double-adjustable roll pressure adjustment handle (6) up to the first and second stages, an air cylinder (16) in the third and fourth stages, a cylinder shaft operation limiting plate (17) and a positioning nut. (18)
The required granularity can be set independently for each of the above stages. For example, the finest particle size desired is set in the final lower roll set, and similarly, the upper layer is set so that a slightly coarser (larger) particle size is drawn, and the upper If a slightly coarser powder is set, it is possible to open and take out a set of subsequent rolls from each stage that gives a predetermined particle size by automatically pulling the required particle size by remote control.
The case of FIG. 4 is the same as above even if the arrangement is different.
Each slide roll (1) and fixed roll (2) is provided with a powder peeling knife (25).
[0028]
The same applies to the case of FIG. 5, but in this drawing, the motor (19) with a slide roll side mounting speed reducer and the motor (20) with a fixed roll side mounting speed reducer are all described, and cooling water to the roll crusher is shown. Inlet (23) and cooling water outlet (24) are described. Further, a conveyor (30) for conveying raw rice is described, a spiral grooved shaft (28) of a hopper (27) is also described, and a spiral grooved shaft (28) is provided by a motor (31) with a speed change function for a spiral grooved shaft. Is rotating.
[0029]
FIG. 6 also shows four roll crushers. In this case, the conveyor (30) is described, and the spiral grooved shaft (28) of the hopper (27) and the motor (31) with a sonic function for the spiral grooved shaft are also described.
[0030]
FIG. 7A shows a spiral groove shaft (28) attached to the hopper (27), and FIG. 7B shows an enlarged view (29) thereof.
[0031]
《Comparative example》
A conventional roll grinder will be described with reference to FIG.
There is a raw rice input hopper (27), and the pulverizer part consists of a slide roll (No. 1) (1), a fixed roll (No. 2) (2) and a slide roll (No. 3) (3).
In the setting of the milling particle size of the conventional pulverizer, first, the roll pressing adjustment handle (10) is rotated in the tightening direction, and the pressing spring (12) is gradually compressed through the pressing interposing metal fitting (11). The position where the slide roll (No. 1) (1) moved to the fixed roll (No. 2) (2) side and contacted in the same way on the left and right is the origin. And the scale of the rotation speed indicator (14) attached in the roll pressing adjustment handle is set to zero. When raw rice is put in this setting and the machine is operated, the pressure between the rolls is weak and the powder becomes coarse. If you want the required granularity, tighten the roll pressure adjustment handle (10), but it will vary depending on the amount of raw rice input and the amount of water added to the raw rice, and it requires a sense, skill and experience.
Further, as the pressure contact force is increased due to the structure of the conventional pulverizer, the slide roll (No. 1) (1) is pressed against the fixed roll (No. 2) (2), resulting in a problem of noise generation.
[0032]
【The invention's effect】
The present invention can finely adjust the roll interval of the multi-stage pressure contact roll set step by step according to the desired pulverization particle size of the raw rice, and from one pulverized coarse powder to pulverized fine coarse powder with one roll pulverizer The desired particle size powder can be efficiently produced. Moreover, it is possible to easily set a reference value for determining the particle size of the powder.
[Brief description of the drawings]
1 is a cross-sectional view of the roll crusher of the present invention. FIG. 2 is a cross-sectional view of the roll crusher of the present invention. FIG. 3 is a cross-sectional view when a plurality of roll crushers of the present invention are used. Sectional view when using a plurality of roll pulverizers of the present invention [FIG. 5] Cross-sectional view and cross-sectional view when using a plurality of roll pulverizers of the present invention [FIG. Sectional view when used individually [Figure 7] a, b Spiral grooved shaft attached to the hopper of the present invention and an enlarged view thereof [Figure 8] Sectional view of a conventional roll crusher [Figure 9] a, b Explanatory drawing of the raw material charging mechanism of the invention and its hopper
1. Slide roll (No. 1)
2. Fixed roll (No. 2)
3. Slide roll (No. 3)
4). 4. Bearing box 5. Bearing box movement limit point 6. Double adjustment type roll pressing adjustment handle With lead screw handle. 8. Lead screw lock nut 9. Female screw
9-1. 10. Lock nut 10 for female screw and roll pressing adjustment handle Pressing metal fitting 12. Pressing spring 13. Handle lock 14. Rotational speed indicator for built-in handle (weight type)
15. Linear gauge sensor 15-1. Collar with screw for initial clearance adjustment and fixing 15-2. Screw dog 15-3 for electrically detecting or controlling the roll interval. Sensor for linear (dial) gauge 16. Air cylinder 17. Cylinder shaft motion limiting plate 18. Positioning nut 19. Motor with slide roll mounting speed reducer 20. Fixed roll side mounted speed reducer motor 21. Motor with speed reducer for roll rotation 22. Roll cooling pipe 23. Cooling water inlet 24. Cooling water outlet 25. Powder cutting knife 26. Powder adjustment knife adjusting screw 27. Raw material rice hopper 28. Spiral groove shaft 29. Partial enlarged view of spiral grooved shaft 30. Raw material rice transfer conveyor 31. Motor with speed change function for spiral groove shaft 32. Main body configuration frame 101. Raw rice 102. Conveyor belt 103. Hopper 104. Grinding roll 105. Spiral grooved shaft 106. Chute 107. Photoelectric switch 108. Detection hole

Claims (10)

Horizontally arranged one-stage or two-stage roll crushers consisting of a combination of a fixed roll and a single-stage or two-stage upper and lower slide rolls pressed against the side surface of the fixed roll are further arranged in a plurality of stages. The raw rice to be crushed is pulverized from the upper stage to the lower stage between the fixed roll and the slide roll, and the pressure roll interval between the fixed roll and the slide roll that are pressed against each other is electrically displayed. By using the sensor for the above, the raw rice is passed between the above-mentioned fixed roll and slide roll from the upper stage to the lower stage in order to make the powder of the desired particle size. The powder having the desired particle size can be obtained from the final roll set, and the lower roll set is opened from the roll set that gives the required particle size. Characterized in that form so that it can be withdrawn Te, roll grinding method of Rice. The raw rice roll pulverization method according to claim 1, wherein the fixed roll and the slide roll each have a hollow structure and adopt a forced cooling system in which cooling water is passed through them. Set the pressure contact force between the fixed roll and slide roll for each roll set, and set the rotation difference between the fixed roll and slide roll of each roll set, and perform grinding and milling by the grinding action by this rotation difference The raw material rice roll pulverization method according to any one of claims 1 to 2 . The raw rice roll pulverization method according to claim 3, wherein the rotational speed of the lower roll group is increased relative to the rotational speed of the upper roll group . A hopper having an exit along the width of the roll is provided on the roll crusher, and a spiral groove shaft having a width substantially equal to the roll width is attached to the outlet of the hopper, and raw rice is supplied onto the spiral groove shaft. 5. The raw rice roll pulverization method according to claim 1 , wherein a chute is provided in the hopper, and the raw rice is supplied onto the chute by conveying means such as a conveyor . By forming a feed path for the raw rice from the conveying means through the chute in the hopper to the roll crusher through the spiral grooved shaft, the amount of the raw rice on the chute is kept in a certain range to the roll crusher The method for roll pulverizing raw material rice according to claim 5, wherein the supply amount of the raw material rice is controlled. The roll of raw rice according to claim 5 or 6, wherein the amount of raw rice put into the hopper by the conveying means is variable so as to keep the accumulated height of the raw rice on the chute in a certain range in the raw rice supply channel. Crushing method. 8. A roll of raw rice according to any one of claims 5 to 7 , wherein the spiral grooved shaft has a spiral groove formed symmetrically on the surface of the shaft so as to feed the raw rice toward the center of the shaft. Crushing method. 2. The raw rice roll pulverization method according to claim 1, wherein the slide roll movement limit point is set using a screw-type dog for electrically indicating the pressure-contact roll interval and a set screw collar for fixing the initial gap. The roll grinder directly used for the roll grind | pulverizing method of the raw rice of any one of Claim 1-9.

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