JP6536261B2 - Vertical grinding type grain milling machine - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a vertical grinding type grain milling machine used for refining rice, such as rice and wheat.

  In the vertical grinding type grain milling machine, a grinding type grain milling roll (hereinafter, grain milling roll) is attached to a main shaft standing on a base, and a peripheral wall member or a porous wall removing cylinder is disposed surrounding its outer periphery. The peripheral wall member or the porous wall removing cylinder is fixed to the base side, and the space between the outer surface of the cereal roll and the inner surface of the peripheral wall member or porous wall removing cylinder is used as a grain milling chamber.

  Grains are supplied to the grain milling chamber from the upper or lower part, and the grains are rotated, revolved and rolled while moving downward or upward in the grain milling chamber, and contact with the grain milling rolls to gradually grind the surface layer Be done. And, it is discharged to the outside from the discharge port on the opposite side to the supply part. Although patent document 1 is an example which employ | adopted the porous wall removal cylinder, such a vertical grinding type grain milling machine is described.

  In the case of the above-mentioned peripheral wall member type, the cocoon that has been produced by the above-mentioned grinding moves along with the grain with the grain, and after being discharged together with the grain from the discharge port, It is separated into grain and straw. Further, in the porous wall removal cylinder type, the blast furnace function separates the crucible from the grain milling chamber to the outside as needed through the porous wall, and most of the grains are removed when the grains reach the discharge port. For this reason, no stone is placed in the next process.

Here, the term “rice cake” refers to rice cake when the grain is rice, but not limited to rice cake, and in the case of other grains, fine ground abrasives to be ground from the grain surface by the grain refining action of the grain roll. Shall mean.
Taking brewing rice as an example, it changes from red rice husk at the beginning of Qinsei to middle rice husk and even white rice husk. Red mulberry is a brown rice surface layer with exfoliated pigmentation and a slight viscosity, and white mulberry is a nearly non-viscous starch fine piece scraped from the starch layer.
And the discharge guide plate which guides the grain which received the grain refinement action is provided in the discharge port of the said grain milling chamber, and a resistance board is provided in the tip, adjusts the opening degree of the resistance plate, Adjust the flow and load. The degree of opening of the resistance plate is determined by the balance between the resistance pressure of the resistance plate and the discharge pressure exerted by the mixture of grains and scales on the resistance plate.

Patent No. 3271408

The loading of grain and the flowability of grain in the grain milling chamber of the vertical grinding type grain milling machine depend on the discharge pressure exerted by the mixture of grain and straw on the resistance plate as described above. Then, the mixture of grain and straw in the grain chamber is guided by the guide plate provided at the discharge port and reaches the resistance plate.
On the other hand, near the end of brewing milled rice using a vertical grinding type grain milling machine, the ground rice grain is smaller, the shape is also well formed, and the surface is smooth. Furthermore, the generated soot is also a "white glaze" with almost no viscosity, and the amount is also decreasing. For this reason, the rice grains in the grain milling room have a high degree of freedom, and even if it is attempted to guide the mixture of rice grains and rice bran in the direction of the resistance plate with the guide plate as described above, the rice grains rotate and escape (a waste inside Flow), it is not possible to apply a sufficient discharge pressure to the resistance plate.

  Therefore, if the load is constant, the discharge pressure is insufficient with respect to the above-mentioned resistance pressure with the progress of the load, the opening degree of the resistance plate becomes small, and the circulation of rice grains becomes worse. As a result, the progress of the semen is delayed or stagnated. On the other hand, near the end of the brewed milled rice, when the rice grains and the mixture in which the white grains are slightly mixed are accumulated more than a predetermined amount in the rice processing room, the rice grains are strongly rubbed with each other because there is no buffer by the fire The rice grains are damaged.

FIG. 8 shows the case of brown rice, but shows the above-mentioned change of state continuously. According to this, the discharge pressure does not decrease so much to a yield of around 80%, but it decreases rapidly as the yield progresses. This is because it is difficult to remove the above-mentioned erythema and medium scale with a scale stone or porous wall removing cylinder, and the degree of freedom of grain is because approximately 20% of the scale is mixed with rice grains and circulated in the early stage Low, on the other hand, there is a tendency for the rice to grow, and from about 75% of the yield, the white mulberry increases, and the white mulberry is easily removed with a large stone or porous wall removing cylinder. It is because the amount is reduced and the freedom of grain is increased.
Therefore, the present invention suppresses the drop of the discharge pressure with the progress of the spermatozoa, eliminates the delay or stagnation of the progress of the spermatozoa, and also provides a vertical grinding type that can obtain excellent finished grains. The challenge is to provide grain machines.

A spindle is set up on a base, and a grinding type cereal roll is axially attached to the spindle,
Attach the peripheral wall member to the base surrounding the grinding type cereal roll,
Between the peripheral wall member and the grinding-type grain roll is a grain-making chamber,
A discharge guide member and a resistance plate are provided at the discharge port provided in the grain milling chamber,
The opening degree of the resistance plate is a balance between the resistance plate pressure applied to the resistance plate and the discharge pressure by the mixture of grain and straw in the grain chamber guided toward the resistance plate by the discharge guide member age,
The discharge guide member projects into the grain milling chamber to guide the flow of the mixture of grain and straw from the grain milling chamber to the resistance plate,
An amount of protrusion of the discharge guide member in the grain milling chamber can be adjusted.
The discharge guide member may be in the form of a plate, and may be a discharge guide plate capable of adjusting the amount of protrusion to the inside of the cereal grain chamber with the passage of time or a measurement value detected by a load mechanism.
Further, adjustment of the amount of projection of the discharge guide member into the grain milling chamber may be performed by an actuator driven by electricity or fluid pressure.

  By making it possible to adjust the amount of protrusion to the inside of the milling chamber, it is possible to control the discharge pressure of the mixture of kernel and straw from the milling chamber by providing the guide member provided at the grain outlet of the milling chamber. Therefore, by adjusting the amount of protrusion of the guide member in the second half of the treatment where the discharge pressure becomes weak, the decrease of the discharge pressure is prevented, and as a result, not only the inertia efficiency is maintained, but also the resistance plate is opened. Because the degree is maintained large, the time taken for grain discharge is reduced.

The perspective view which showed the whole vertical grinding type | mold rice polishing apparatus. Right side view of vertical grinding type rice polishing apparatus. The top view of a vertical grinding-type rice milling apparatus. The right side view which showed the part of a vertical grinding type rice milling machine and a large stone by the cross section. The top view which showed the partial cross section of a vertical type grinding type milling machine. The top view which expanded A part of FIG. Control block diagram which drives the air actuator of a discharge guide plate. The figure which showed the relationship between discharge pressure and yield.

As a vertical grinding type grain milling machine, take up a vertical grinding type rice milling machine 1 for brewing (hereinafter, rice milling machine 1).
FIGS. 1-3 is for demonstrating the vertical type | mold grinding type rice milling apparatus 2 (following, rice milling apparatus 2) incorporating the said rice milling machine 1. FIG.
The rice milling apparatus 2 (FIG. 1, FIG. 2) is roughly provided with the above-mentioned rice milling machine 1, the storage tank 3, the bowl 4, the grain milling machine 5 and the control device 47.
The storage tank 3, the rice milling machine 1 and the bench 4 are disposed on the grain milling base 6, and the grain milling machine 5 is supported by the grain harvesting base 7.

The brown rice embedded in the storage tank 3 is supplied from the lower part (FIG. 2) of the storage tank 3 to the supply port 8 at the top of the rice milling machine 1, and is refined by the action of the grinding type milling roll 9 in the rice milling machine 1, It is supplied from the outlet 10 at the lower part of the rice milling machine 1 to the bowl 4. Below the storage tank 3, a supply adjusting device 3a (FIG. 2) is provided.
In the case of four stones, it is separated into rice grains and straws by the vibration sorting plate 11 consisting of a perforated plate, and the rice grains are sent to the lower part of the grain milling machine 5 by the grain takeout duct 12. It is sent to 14 (FIG. 3).

  The rice grains sent to the grain milling machine 5 are sent to the upper side of the storage tank 3 by a bucket conveyor or the like and supplied again to the storage tank 3. That is, in the rice milling apparatus 2, brown rice is circulated to the rice milling machine 1 and the stone 4 using the storage tank 3 and the grain growing machine 5, and meanwhile, the rice polishing machine 1 repeatedly separates rice bran and rice by grinding. Obtain polished rice as a yield.

A lower work table 15 (FIG. 1) is provided on the cereal grain base 6, and an upper work table 16 provided with a forceps 16a is provided on the raised grain base 7. The milling base 6 and the lifting base 7 are mutually connected to guarantee the strength.
Suction pipes 17 are arranged up and down along the lifting grain base 7, and the upper part thereof penetrates the upper work table 16. To the suction pipe 17, a dust collection pipe 18 from the inside of the grain milling machine 5 and a dust collection pipe 19 from the storage tank 3 are connected. The reference numeral 17a denotes an air introduction portion, which is for preventing the inside of the storage tank 3 from becoming negative pressure as a result of suction by the dust collection pipe 19.
The pipe-like object 20 extending from the top of the rice milling machine 1 is an arm and is used when moving the rice milling machine 1.

In FIG. 1 and FIG. 5, reference numeral 21 denotes a rotary shaft, and when it is desired to check the rice milling machine 1 and the connection points above and below, the rice milling machine 1 is horizontally rotated about this shaft 21 to store the rice milling machine 1 in a storage tank It can be made to shift from between 3 and 4th.
In FIG. 3, reference numeral 22 denotes a finish rice extraction pipe, which leads to a facility for storing finish rice.
Further, in FIG. 1, reference numeral 23 denotes a motor, which is a driving source of the rice milling machine 1.

FIG. 4 shows the lower portions of the rice milling machine 1, the stone 4 and the grain milling machine 5.
In the rice milling machine 1, the rice milling machine base 25 is mounted on the upper surface of a sturdy universal stone casing 24 so as to be horizontally rotatable about the rotary shaft 21. Usually, bolts are mounted on the upper surface of the massive stone casing 24. It is detachably fixed at. A main shaft 26 stands vertically and rotatably at substantially the center of the rice milling machine base 25. A passive pulley 27 is attached to the lower part of the main shaft 26, and is linked with an output pulley 28 of the motor 23 by a V-belt 29 (FIG. 5).

In FIG. 4, the roll support 30 is attached to the lower part of the main spindle 26 projecting from the rice milling machine base 25 first, and the whitening rolls 9 are attached to the upper part thereof in two stages in this embodiment. There is. The whitening roll 9 comprises an annular grinding wheel 31 and a boss portion 32 at its center, an arm 33 connecting the grinding wheel 31 and the boss portion 32 (FIG. 5), and relative rotation to the main shaft 26 is impossible at the boss portion 32 Mounted on A diffusion guide plate 34 is further superposed on the upper portion of the whitening roll 9 attached to the main shaft 26, and a diffusion guide plate 34 and two whitening rolls are held by a stop member 35 inserted at the center and bolted to the main shaft 26. 9 is pressed downward and fixed.
The diffusion guide plate 34 has a curved surface which gradually spreads from the central vertex to the periphery and lowers.

A peripheral wall member 36 is disposed around the whitening roll 9 with the base fixed to the rice milling machine base 25, and a whitening chamber 37 (milling room) is formed between the inner surface thereof and the outer surface of the whitening roll 9. .
An upper cover 38 is attached to the upper edge of the peripheral wall member 36, and the upper portion thereof is the supply port 8. The top of the diffusion guide plate 34 is disposed immediately below the supply port 8.

The aforementioned discharge port 10 for discharging the rice grains of the whitening chamber 37 is provided in a part (front side) of the lower peripheral edge of the peripheral wall member 36 (FIGS. 5 and 6).
A discharge rod 39 is provided in connection with the discharge port 10, and a resistance plate 40 is disposed. The resistance plate 40 is urged in the closing direction by a load mechanism 41 such as a weight or an air cylinder to close the discharge port 10, and applies resistance plate pressure to the discharge port 10.

  The discharge gutters 39 are arranged toward the circumference of the whitening roll 9, that is, in the direction orthogonal to the flow of the rice grains rotating and moving the whitening chamber 37 (the radial outside of the whitening roll 37). A discharge guide plate 42 is provided to divert the flow of the fluid toward the discharge port 10 side.

The discharge guide plate 42 is disposed so as to protrude into the whitening chamber 37 along the side wall 43 of the discharge gutter 39 so that the amount of protrusion can be adjusted. In this embodiment, the discharge guide plate 42 is movable by the air actuator 44 in the radial direction.
The air actuator 44 (FIG. 7) is connected to the air pump 45 via the adjusting valve 46, and the adjusting valve 46 is under the control of the control device 47 provided in the vertical grinding type rice polishing machine 1 for brewing.

  The control device 47 controls the entire operation of the vertical grinding type rice milling apparatus 2, and the polishing chamber 37 is provided with each sensor 47a for measuring the density, temperature, flow velocity, etc. of rice grains, and the time element from the start of milling And the like to control the operation of the load mechanism 41 and the air actuator 44 described above.

The discharge weir 39 is connected to the communication duct 48, and the communication duct 48 supplies the mixture of rice grains and cocoons to the stone 4.
A large stone 4 (FIG. 4) is placed on the grain milling base 6, and a sieve 52 composed of a vibrating porous plate 50 and a weir receiving plate 51 is placed on the large stone base 49 in an inclined manner. The code | symbol 53 is a vibration apparatus.

  The upper part in the inclination direction of the sieve 52 is a supply receiving part, and the lower part is a discharging part consisting of a grain extracting duct 12 connected to the vibrating perforated plate 50 and a crucible extracting duct 13 connected to the crucible receiving plate 51. The mixture of rice grains and straws supplied from the connection duct 48 of the rice milling machine 1 to the upper part of the sieve 52 is separated into rice grains and straws when the vibrating porous plate 50 is moved downward by vibration and inclination. The separated rice grains are sent from the grain takeout duct 12 connected to the lower part of the sieve 52 to the grain well 54 of the grain harvester 5. Further, the coffins are sent from the coffin receiving plate 51 to the collecting duct 55 through the coffin extracting duct 13 and captured and stored by a bag filter or the like.

  The passage to the grain milling machine 5 side and the passage to the collecting duct 55 side are common in the circulation connecting duct 56 immediately below the discharge part of the grain extraction duct 12 and the straw extraction duct 13 (FIG. 4). Between these, a switching valve 57 is provided to shut off the movement of the coffin to the collecting duct 55 and guide the coffin from the coffin extraction duct 13 to the grain pool 54 at the lower part of the grain lifting machine 5 .

The brown rice having the above-described configuration and embedded in the storage tank 3 as described above moves downward while being subjected to the polishing effect of grinding in the rice milling machine 1, and passes from the discharge port 10 to the multistone 4 through the communication duct 48. It enters and moves to the grain storage 54 of the grain milling machine 5 while separating the gravels by the stone 4. Then, the circulation is repeated by being fed to the upper part of the storage tank 3 by the grain milling machine 5 and subjected to the whitening action again. The circulation is repeated until the target brown rice is the desired yield.
During this time, the resistance plate 40 of the discharge port 10 has an opening degree at which the resistance plate pressure set by the load mechanism 41 and the discharge pressure of the mixture of rice grains guided by the discharge guide plate 42 balance with each other. And the necessary load is maintained.
The adjustment of the load is basically performed by adjusting the resistance plate pressure by the load mechanism 41.

On the other hand, as described above, in a state in which the grain refining is delayed or stagnated near the end of the brewery rice, the discharge pressure to the resistance plate 40 is reduced, and the opening degree of the resistance plate 40 is reduced. In a normal case, if the opening degree of the resistance plate 40 is small, the load on the load is large and the load current of the motor 23 is also large. Therefore, the proper normal load current of the motor 23 corresponding to each progress degree of the lens is stored in the control device 47, and this is compared with the load current of the motor 23 at the current opening degree of the resistance plate 40. The actuator 44 is driven to cause the discharge guide plate 42 to project further into the whitening chamber 37 than in the previous whitening period, and bring the whitening load closer to the proper normal value.
The degree of progress of processing may be determined based on data such as the size of rice grains and changes in composition of rice by signals from the sensors connected to the control device 47, or may be based on the time from the start of processing.
That is, when the progress of the processing (the progress of the degree of milling) is slow, the air actuator 44 is driven to make the discharge guide plate 42 project further into the milling chamber 37 than in the previous milling. Then, the amount of the mixture of rice grains and straw moved to the resistance plate 40 side by the discharge guide plate 42 increases, and the discharge pressure increases with respect to the pressure of the resistance plate, and the resistance plate 40 reaches a position where the balance is maintained. The amount of movement of the mixture of rice grain and straw in the whitening chamber increases. This accelerates the circulation of the mixture of rice grain and straw and shortens the time until the completion of milling. In addition, since it enables free rotation and movement of rice grains under a constant load of rice milling, the shape of polished rice can be adjusted.

The embodiment has been described above by taking up the vertical grinding type rice milling machine 1 for brewing using a vertical grinding type grain milling machine for brewing, but the present invention is not limited to the vertical type grinding type rice milling machine for brewing, and And other cereals, which can be applied to cereal mills of the type provided with a cereal roll by grinding and applied by means of a resistance plate disposed at the discharge port 10 of the cereal chamber with a milled cereal load of the cereal grain chamber It is.
In addition, although a plate-like discharge guide plate 42 is shown as a discharge guide member, the mixture of grains and straws moving circularly along the outer peripheral surface of the whitening roll 9 is also possible in the radial direction. What is necessary is to have a function of guiding to the outside.
Furthermore, the drive device of the discharge guide plate 42 may be an electrically driven actuator such as a motor and a gear instead of an air device.

  The present invention is effective for a grain milling apparatus equipped with a vertical grinding type grain milling machine. In particular, it is suitable for a vertical grinding type grain milling machine that performs brewing and milling to execute high milling degree.

1 Vertical grinding type rice milling machine (graining machine) for brewing
2 Vertical grinding type rice milling machine (grain milling machine)
Reference Signs List 3 storage tank 3a supply adjusting device 40,000 stone 5 grain milling machine 6 milled grain base 7 grained grain base 8 supply port 9 whitening roll 10 outlet

11 Vibration Sorting Plate 12 Grain Extraction Duct 13 Barrel Extraction Duct 14 Collector Device 15 Lower Workbench 16 Upper Workbench 16a Insulator 17 Suction Pipe 18 Dust Collection Pipe 19 Dust Collection Pipe 20 Arm

21 Rotary shaft 22 Finished rice extraction pipe 23 Motor 240 mass stone casing 25 Milling machine base 26 Spindle 27 Passive pulley 28 Output pulley 29 V belt 30 Roll holder

Reference Signs List 31 grinding stone 32 boss portion 33 arm 34 diffusion guide plate 35 stop member 36 circumferential wall member 37 white chamber 38 upper cover 39 discharge plate 40 resistance plate

41 load mechanism 42 discharge guide plate 43 side wall of discharge weir 44 air actuator 45 air pump 46 control valve 47 control device 48 contact duct 49 well base 50 vibrating perforated plate

Reference Signs List 51 receiving plate 52 sieve 53 vibrating device 54 grain reservoir 55 collecting duct 56 connecting duct for circulation 57 switching valve

Claims (4)

A spindle is set up on a base, and a grinding type cereal roll is axially attached to the spindle,
Attach the peripheral wall member to the base surrounding the grinding type cereal roll,
Between the peripheral wall member and the grinding-type grain roll is a grain-making chamber,
A discharge guide member and a resistance plate are provided at the discharge port provided in the grain milling chamber,
The discharge guide member projects into the grain milling chamber to guide the flow of the mixture of grain and straw from the grain milling chamber to the resistance plate,
A vertical grinding type cereal grain machine characterized in that an amount of protrusion of the discharge guide member inside a cereal grain chamber can be adjusted.   The vertical grinding type fine polishing apparatus according to claim 1, wherein the discharge guide member is a plate-like discharge guide plate capable of adjusting the amount of protrusion into the grain milling chamber by the time from the start of the milling. Grain machine.   The vertical grinding according to claim 1, characterized in that the discharge guide member is a plate-like discharge guide plate capable of adjusting the amount of protrusion to the inside of the grain milling chamber by a measured value detected by a load mechanism. Type grain milling machine.   The vertical grinding type cereal grain machine according to any one of claims 1 to 3, characterized in that the amount of projection of the discharge guide member inside the cereal grain chamber is performed by an actuator driven by electricity or fluid pressure. .

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