JPS6247066B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a vertical grain milling device.

An object of the present invention is to enable a vertical grain milling device to carry out load milling, which was considered impossible in the past, and to obtain a pressure-based vertical grain milling device.

Another object of the present invention is to theoretically make it possible to obtain a vertical grain milling device with less unevenness.

Compared to horizontal grain milling equipment, vertical grain milling equipment has the advantage of being able to mill grain in its original form and has a significantly lower incidence of broken rice. Since it is a device, it has the flaw that its ability to extract the essence is extremely low.

For example, the device shown in FIG. 1 is a horizontal grain milling device, in which a grain feeding spiral B and a roll C are attached to a horizontal axis A, which is surrounded by a milling tube D and a grain feeding tube D', and a feeding port Brown rice is supplied from E, and a resistance lid G is placed on the discharge port F.
The rice grains in the milling chamber are not easily ejected by attaching the rice grains, and the rice is polished by forcibly rotating the horizontal axis A.
Since milling is carried out under great pressure to prevent the rice from being discharged, it has the advantage that polished rice can be obtained immediately, but as mentioned above, it has the disadvantage that a lot of broken rice is produced due to forced milling. are doing. In addition, the grain milling equipment shown in Figure 1
Because it is horizontal, the rice is distributed thickly in the lower layer of the milling chamber due to its own weight, and the upper layer of the milling chamber is thinner, resulting in uneven grains. However, because the rice milling efficiency is quite high and the power transmission mechanism can be easily formed, almost all rice milling plants today use horizontal grain milling equipment, and rice milling plants using vertical grain milling equipment do not. The reality is that there are hardly any.

The ones shown in FIGS. 2 and 3 are typical examples of vertical grain milling equipment currently used in some rice mills and sake brewing plants.

The example shown in Figure 2 is a grain milling device that is often used in sake brewing factories, where H is a vertical shaft and I is a grinding rotor attached to the top of the vertical shaft H. , as a feature, the vertical shaft H does not protrude above the trochanter I, but only below, and the pulleys etc. are fixed below the trochanter I and are driven below the trochanter I. It was getting worse. In the vertical grain milling device shown in Fig. 2, when rice grains a are supplied from the upper supply port J, the rice grains a are milled while being horizontally agitated by a horizontally rotating grinding wheel (grinding wheel of diamond sand) I. The grain is discharged from the outlet K formed at the bottom, but the defect of this vertical grain milling device is that
The location of the outlet K is not at the bottom of the center of the whitening room,
Since it is located on the side of the whitening room, it is difficult for the rice grains accumulated in the area indicated by the arrow L on the opposite side of the outlet K to be discharged. Of course, since the grinding rotor I rotates at a high circumferential speed of 2,000 feet per minute, the rice grains in the area indicated by the arrow L are also horizontally agitated by the grinding rotor and sent to the discharge port by centrifugal force. It is emitted from K, and therefore,
Although it has been put into practical use and is widely used, if the resistance of the resistor cover M attached to the outlet K of the grain milling device shown in Fig. 2 is made too strong, it will suddenly become clogged. An accident occurs in which the grinding roller I stops rotating at all. That is, the resistor lid M is only a sham resistor device, and is used in a nearly non-resistance state with almost no resistance applied. This kind of accident in which the grinding trochanter I stops rotating does not occur extremely rarely, but if there is even the slightest mistake in its use, it will suddenly occur, so this is a defect in the grain milling device shown in Figure 2.

The vertical grain milling device shown in FIG. 3 overcomes the deficiencies of the vertical grain milling device of FIG. That is, vertical H
does not protrude downward, but only upward, of the grinding device I, and a pulley N is attached thereto, creating an upper drive structure, so the discharge port K opens directly below the center of the grinding trochanter I. As a result, stuck rice grains like the arrow L shown in FIG. 2 do not occur.

However, in the case of the vertical grain milling device shown in FIG. 3, the pulley N is located at the supply port J, which hinders the operation of supplying rice grains. In Figure 3, rice grains are supplied into the milling chamber through pulley N, but since pulley N is rotating at a fairly high speed, a smooth flow of rice grains cannot be expected, and there is no way to stop it. , since the part indicated by arrow A shifted to one side of the whitening room is opened and the supply is made from there, the supply to the whitening room is biased, which is unreasonable.

Also, when comparing the vertical grain milling device shown in Figures 2 and 3 with the horizontal grain milling device shown in Figure 1, in the case of the horizontal grain milling device, a device called grain feeding spiral B is used. However, vertical grain milling equipment does not have this. The idea is that it is not necessary,
I haven't installed it because I think it's impossible to do so. If a grain feeding spiral were attached to the vertical grain milling device shown in FIGS. 2 and 3, the rice grains would be tightly packed inside the milling chamber, making it difficult to move. If a rice grain in such a state comes into contact with the grinding trochanter I, it will be partially sanded, and only that part will be ground so that it is deeply gouged.
It would be impossible to hope for the original form of the spirit to be harvested, where the surroundings are uniformly harvested. In addition, when milling under pressure as described above, the rice grains in the area indicated by arrow L are not completely discharged, which induces the so-called squeak phenomenon, resulting in damage to the grain milling device.

The trochanters I of the vertical grain milling equipment shown in FIGS. 2 and 3 are both grinding trochanters (grinding stones made of diamond sand), but the horizontal grain milling trochanters C shown in FIG. They are also different in that they are metal trochanters with stripes and are called friction trochanters.

In other words, all vertical grain milling machines are non-pressure type machines that use grinding rotors, whereas pressure-type vertical grain milling machines that use friction rotors have not been put to practical use until now. It is something.

The present invention is a pressure-based grain milling device for a vertical grain milling device in order to further improve the yield, which has reached its limit with horizontal grain milling devices. A trochanter is attached, the outer periphery of the polishing trochanter is surrounded by a polishing tube, the polishing tube is installed so as to automatically move downward when the pressure in the polishing chamber increases, and an annular discharge passage is provided at the lower end of the polishing tube. The gist of the present invention is to form a vertical pressure type polishing device in which the discharge passage is configured to become wider as the polishing cylinder moves downward.

To explain with the drawing, 1 is a lower frame, and an upper frame 2 is stacked and stacked above the frame 1. The upper frame 2 has a circular or angular vertical cylindrical cross-sectional shape. Window holes 3 are formed at a plurality of locations on the circumferential side of the frame 2, and the window holes 3 are closed by a removable lid 4. An annular flange 5 projecting inward is attached to the upper end (or upper wall) of the upper frame 2. A support 7 of a supply hopper 6 is engaged with and placed on the upper surface of the collar 5. In addition to the supply hopper 6, a spring bearing ring 8 is attached to the flange 5.
The outer peripheral edge 9 of the ring 8 engages with the upper inner edge of the flange 5, the other part faces the space 10 in the upper frame 2, and has a spring receiving protrusion 11 on the lower surface. It is installed. 12 is a manual operation lever, which is fixed to the spring receiver ring 8;
By holding the lever 12 and moving it horizontally, the ring 8 can be rotated. 13 is the lever 1
2 is an engaging portion for fixing it there after being rotated to a desired position. The lower end 14 of the hopper 6
expands horizontally at a position above the space 10 of the upper frame 2 to form a horizontally expanded portion 15 . 16 is a vertical sliding tube. The upper end 17 of the sliding tube 16 surrounds the horizontally expanded portion 15 formed at the lower end 14 of the hopper 6, and does not fall below the horizontally expanded portion 15 even if the sliding tube 16 moves down to the maximum. It is formed so that there is no The sliding cylinder 16 of the embodiment is formed into a cylinder having the same inner diameter throughout, and a grain feeding spiral 18 is provided inside the sliding cylinder 16 . On the outer periphery of the vertical sliding tube 16, there is a shaft 19 whose axis is in the radial direction.
Attach three or four of them, and pivotally attach the lower end of the swinging arm 20 to these. The upper end of the swing arm 20 is connected to the shaft 1
It is pivoted to a shaft 21 attached to the upper frame 2 side at a position shifted in the circumferential direction with respect to the upper frame 2 . The lower end of the swinging arm 20 and the spring bearing ring 8
A spring 22 is interposed between the spring receiving protrusion 11 and the spring receiving protrusion 11 . As is clear from FIG. 4, when the manual operating lever 12 is rotated in the horizontal direction and the spring receiver ring 8 is rotated in a direction that stretches the spring 22, the elasticity of the spring 22 becomes stronger. The upper end of the polishing tube 23 is coupled to the lower end of the vertically sliding tube 16 . The polishing cylinder 23 in the embodiment is a hexagonal cylinder made of a punched perforated plate, and is formed as a sugar removal cylinder.
Inside the polishing cylinder 23, a polishing trochanter 24, which is a friction trochanter, is attached. The grain feeding spiral 18 and the milling trochanter 24 are fixed to the upper end of a vertical shaft 25, and the outer periphery of the trochanter 24 is provided with a vertical protrusion 26.
form. The protrusions 26 may be provided so as to be inclined in a direction that causes the rice grains in the milling chamber to float upward, and the milling trochanter 24 may also be a blast trochanter. When the whitening trochanter 24 is a blast trochanter, the shaft 25 is a hollow pipe. Although the refined trochanter 24 in the embodiment is formed to have the same diameter from beginning to end,
This may be formed into an inverted conical shape that becomes smaller in diameter as it goes downward. Lower end 2 of the white trochanter 24
7 is connected to the upper end of a tapered portion 28 whose diameter becomes smaller toward the bottom. The taper portion 28
The upper end of the small diameter portion 29 is joined to the lower end of the small diameter portion 29 . The small diameter portion 29 has a constant height in the vertical direction, and its lower end is joined to the upper end of a taper guide surface 30 whose diameter gradually increases toward the bottom. The lower end of the polishing cylinder 23 faces a position near the lower end 27 of the polishing trochanter 24, and the upper end of the resistor 31 is attached to the lower end. The resistor 31 is formed into an annular body, and its upper end is connected to the polishing tube 2.
3, but until it reaches the middle part in the vertical direction, it is formed as a tapered resistance surface 32 whose diameter becomes smaller as it goes downward, and below the taper resistance surface 32, it reaches the lower end. An enlarged portion 33 is formed whose diameter gradually increases as the diameter increases. The vertically sliding tube 16, the polishing tube 23, and the resistor 31 are of integral construction, and the whole rotates and moves up and down together. The outside of the small diameter portion 29 is the guide tube 3
Surround by 4. The upper end of the induction tube 34 is the resistor 3
1 and surrounding the enlarged portion 33 at the lower end of the portion 1. and,
Even if the enlarged portion 33 moves up to the maximum, the guide tube 34
You can't go further than that. The guide tube 34 is fixed to the upper frame 2 by several connecting pieces 35. A portion of the guide tube 34 is cut out and opened to form a discharge port 36, and a discharge gutter 37 is attached to the outside of the discharge port 36. The space 10 in the upper frame 2 also serves as a falling chamber in which the bran ejected from the polishing tube 23, which is a bran removal tube, falls, and a bran suction blade is installed below the taper guiding surface 30 to suck and remove the bran. 38 is provided.

In the embodiment shown in FIG. 7, the vertically sliding cylinder 16 simply moves up and down, so the gist of the present invention can also be fulfilled by the embodiment shown in FIG. That is, the vertical sliding tube 1
Several protrusions 39 are attached to the outer circumference of the upper frame 2, a threaded rod 41 is attached to the upper wall 40 of the upper frame 2 so as to be vertically adjustable, and a spring 2 is attached between the protrusions 39 and the threaded rod 41.
2 is attached.

Next, we will discuss the effect.

When raw brown rice is put into the feed hopper 6 of the embodiment shown in FIGS. 4 and 5, the brown rice flows down from the lower end 14 of the hopper 6 and is subjected to the strong downward feeding action of the grain feeding spiral 18. It flows into the whitening chamber 42 formed between the outer surface of the whitening trochanter 24 and the inner surface of the whitening tube 23. However, immediately after the start of the process,
Since the amount flowing into the polishing chamber 42 is small and the polishing trochanter 24 rotates lightly, the vertical sliding tube 16, the polishing tube 23 and the resistor 31 are moved up to the maximum by the elasticity of the spring 22. , the resistor 31 is
As shown in FIG. 12, since the discharge passage formed by the tapered resistance surface 32 and the tapered portion 28 is made as narrow as possible, the flow of rice grains is poor and they gradually accumulate in the milling chamber 42. The pressure gradually increases. Therefore, it is milled under high pressure and refined efficiently. As mentioned above, the resistor 3
1 is moving up to the maximum, the amount of rice grains pushed into the milling chamber 42 by the grain feeding spiral 18 is slightly larger, so the rice grains in the milling chamber 42 are clogged to the point of being crushed. However, in that case, the polishing tube 23 rotates in the circumferential direction together with the vertical sliding tube 16 against the elasticity of the spring 22 to relieve the pressure, and by the action of the swinging arm 20, The vertical sliding cylinder 16, the polishing cylinder 23, and the resistor 31 are moved down together to widen the discharge section as shown in FIG. 13, thereby softening the resistance and preventing the rice grains from being crushed. In the case of the embodiment shown in FIG. 7, the vertical sliding tube 16, the polishing tube 23, and the resistor 31 are simply moved up and down to widen the discharge passage, so that the amount of the discharged grains is larger than the amount fed by the grain feeding spiral 18. This is to prevent crushing by making the diameter larger.

The present invention has the above-mentioned structural effects, and in particular,
A downward feeding grain spiral 18 and a milling trochanter 24 are attached to the vertical rotation shaft 25, and the outer periphery of the milling trochanter 24 is surrounded by a milling tube 23, and the milling tube 23 automatically rotates when the pressure inside the milling chamber 42 increases. A summary of the structure of a vertical pressure system polishing device in which the polishing tube 23 is attached so as to move downward, and an annular discharge passage is formed at the lower end of the polishing tube 23, and the discharge passage becomes wider as the polishing tube 23 moves downward. In order to achieve this, (1) Although it is a vertical grain milling device, it can be made into a pressure system milling device, and milling with a high yield peculiar to the vertical grain milling device can be efficiently obtained.

(2) When overloaded, the milling cylinder is moved down and the discharge passage is automatically widened to automatically increase the discharge amount. A passageway can be formed just below the milling trochanter, allowing smooth discharge of grains.

This effect is achieved.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a horizontal pressure grain milling device, Figure 2 is a cross-sectional view of a vertical non-pressure grain milling device, Figure 3 is a cross-sectional view of the same non-pressure grain milling device, and Figure 4 is a vertical grain milling device. A side view of the mold pressure type grain milling device, FIG. 5 is a vertical sectional side view of the same main part, FIG. 6 is a view of the same operation, FIG. 7 is a view of the second embodiment, FIG. 8 is a sectional view of the spring bearing ring, FIG. 9 is a sectional view of the hopper, FIG. 10 is a sectional view of the vertical sliding tube, FIG. 11 is a sectional view of the discharge passage, and FIGS. 12 and 13 are operational views. Explanation of symbols, 1...Lower frame, 2...Upper frame, 3...Window hole, 4...Lid, 5...Brim part,
6... Supply hopper, 7... Support, 8... Spring bearing ring, 9... Outer periphery, 10... Space, 11
... Spring receiving projection, 12 ... Manual operation lever, 13
...Engaging portion, 14...Lower end of hopper, 15...
Horizontal expansion part, 16... Vertical sliding tube, 17... Upper end, 18... Grain feeding spiral, 19... Shaft, 20... Rocking arm, 21... Shaft, 22... Spring, 23... Polishing Cylinder, 24... White trochanter, 25... Shaft, 26... Projection, 27... Lower end, 28... Taper part, 2
9...Small diameter part, 30...Taper guide surface, 31
...Resistor, 32...Taper resistance surface, 33...
...Enlarged portion, 34...Guiding tube, 35...Connection piece, 3
6...Discharge port, 37...Discharge gutter, 38...Suction blade, 39...Protrusion, 40...Top wall, 41...Threaded rod, 42...Refining chamber.

Claims (1)

[Claims] 1. Attach a downward feeding grain spiral and a milling trochanter to a vertical rotation shaft, surround the outer periphery of the milling trochanter with a milling tube,
The polishing tube is installed so as to automatically move downward when the pressure in the polishing chamber increases, and an annular discharge passage is formed at the lower end of the polishing tube, and the discharge passage is configured to become wider as the polishing tube moves downward. A vertical pressure type pumping device.