JPS6247067B2 - - 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 a patchy texture. However, because the 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 some rice milling plants use vertical grain milling equipment. 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 trochanter I is rotating at a tremendous circumferential speed of 2000 feet per minute, the rice grains in the area indicated by the arrow L are also
The grain is agitated horizontally by a grinding rotor and discharged from the discharge port K by centrifugal force, which is why it has been put into practical use and is widely used. If the resistance of the resistor cover M attached to the outlet K is made even a little too strong, it will suddenly become clogged, causing an accident in which the grinding rotor I will not rotate 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 roller I stops rotating does not occur extremely rarely, but if there is even the slightest mistake in usage, it can occur immediately.
This is the 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, the vertical axis H
does not protrude downward from the grinding trochanter I, but only upwardly, 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, there will be no accumulation of rice grains as indicated by the arrow L shown in FIG.

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 the vertical grain milling equipment shown in Figures 2 and 3 were to be equipped with a grain feeding spiral to create a pressure-based grain milling machine, the rice grains would be tightly packed inside the milling chamber and would not be able to move. become inconvenient. If a rice grain in such a state were to come into contact with the grinding trochanter I, it would be partially sanded, and only that part would be ground so as to be deeply gouged, and the surrounding area would be sanded evenly. It would be impossible to hope for the original form to be refined. Not only that, when the rice grains are milled 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.
The grain milling equipment will be damaged.

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

b. Attach a milling trochanter to the lower position of the grain feeding spiral on the rotating shaft.

c. Surrounding the outer periphery of the whitening trochanter with a whitening tube.

d The polishing tube rotates diagonally in the up and down direction depending on the load.

e. An annular discharge passage centered around the shaft is formed at the lower end of the polishing cylinder.

f The discharge passage widens when the polishing tube moves downward.

The gist of this paper is the structure of the book.

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;
The ring 8 can be rotated by holding the lever 12 and moving it horizontally. 13 is the lever 12
This is an engaging part for fixing the handle once it has been rotated to a desired position. The lower end 14 of the hopper 6 is
The upper frame 2 is expanded horizontally at a position above the space 10 to form a horizontally expanded portion 15 . 1
6 is a vertical sliding tube. The upper end 17 of the sliding tube 16
is formed so as to surround the horizontally enlarged portion 15 formed at the lower end 14 of the hopper 6, and to prevent it from falling below the horizontally enlarged portion 15 even if the sliding tube 16 moves downward to the maximum. . Sliding tube 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 cylinder. Three shaft portions 19 are provided on the outer circumferential surface of the vertical sliding tube 16 in the radial direction, and the shaft portions 21 for the shaft portions 19 are attached to the upper frame 2. A diagonal rod 20 is attached to the. Its concrete structure is formed into a flexible joint as shown in FIG.
The screw tube 43 has a bolt 44 with a thread only at the tip.
A spherical body 46 is mounted on the smooth surface 45 at the base of the bolt 44, and a rod 20 is attached to the outside of the spherical body 46.
Similarly, a threaded tube 48 is attached to the inner surface of the upper frame 2, a bolt 49 is screwed thereon, and a spherical body 51 is pivotally attached to the smooth surface 50 of the bolt 49. A shaft body 52 at the upper end of the rod 20 is fitted onto the outside of the spherical body 51 to form a flexible joint. A spring 22 is interposed between the lower end of the rod 20 and the spring receiving protrusion 11 of the spring receiving ring 8. As is clear from FIG. 4, when the manual operation lever 12 is rotated in the horizontal direction and the spring receiver ring 8 is rotated in the direction to stretch the spring 22,
The elasticity of the spring 22 becomes strong. 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 bran removing 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 downward. 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. Then, a discharge passage X is formed between the tapered portion 28 and the tapered resistance surface 32. The vertically sliding tube 16, the polishing tube 23, and the resistor 31 are integrally constructed, and the whole rotates and moves up and down together. The outside of the small diameter portion 29 is surrounded by a guide tube 34 . The upper end of the guide tube 34 surrounds the enlarged portion 33 at the lower end of the resistor 31 . And the enlarged part 33
Even if it moves up to the maximum, it will not come off the guide tube 34. The guide tube 34 has several connecting pieces 35
It is fixed to the upper frame 2 by. A portion of the guide tube 34 is cut out and opened to form the discharge port 3.
6, and a discharge gutter 37 is provided outside the discharge port 36.
is installed. 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 guide surface 30 to suck and remove the bran. 38 is provided.

Next, we will discuss the effect.

When raw brown rice is fed into the supply hopper 6, 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, causing the outer surface of the milling trochanter 24 and the inner surface of the milling cylinder 23 to It flows into the whitening chamber 42 formed between the two. Immediately after the start of polishing, however, the amount flowing into the polishing chamber 42 is small and the polishing trochanter 24 rotates lightly, so that the vertical sliding cylinder 16, the polishing cylinder 23, and the resistor 31
is moved up to the maximum by the elasticity of the spring 22,
As shown in FIG. 11, the resistor 31 has the discharge passage X formed by the tapered resistance surface 32 and the tapered portion 28 narrowed to the minimum, so the flow of rice grains is poor and the rice grains gradually become refined. It is stored in the chamber 42 and the pressure gradually increases. Therefore, it is milled under high pressure and refined efficiently. As mentioned above, when the resistor 31 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 The polishing tube 23 becomes clogged to the point of crushing, but 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 the rod 20 The action causes the vertical sliding cylinder 16, the polishing cylinder 23, and the resistor 31 to move downward together to widen the discharge passage X as shown in Fig. 12, thereby softening the resistance and preventing the rice grains from being crushed. It is.

The invention has the above-mentioned features, in particular: a) mounting the downward feeding grain spiral 18 on the vertical axis of rotation 25;

b. Attach the milling trochanter 24 to the lower position of the grain feeding spiral 18 of the rotating shaft 25.

c. The outer periphery of the whitening trochanter 24 is surrounded by the whitening cylinder 23.

d The polishing cylinder 23 rotates diagonally up and down depending on the load.

e. An annular discharge passage X centered around the shaft 25 is formed at the lower end of the polishing tube 23.

f The discharge passage X widens when the polishing cylinder 23 moves downward.

In order to combine the following requirements, the polishing tube rotates in the circumferential direction when the pressure increases, and when it rotates in the circumferential direction, it moves downward to widen the discharge passage X, thus preventing overload. However, although it is a vertical grain milling device, it can be a pressure type grain milling device.

[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 longitudinal sectional side view of the same main part, FIG. 6 is a view of the same operation, FIG. 7 is a sectional view of the spring bearing ring, FIG. 8 is a sectional view of the hopper, Figure 9 is a cross-sectional view of the vertical sliding tube, Figure 10 is a cross-sectional view of the discharge passage,
11 and 12 are operational views, and FIG. 13 is a plan view of the main parts. 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
...Engagement part, 14...Lower end, 15...Horizontal expansion part, 16...Vertical sliding tube, 17...Upper end, 18...
... Grain feeding spiral, 19... Shaft, 20... Rod, 2
1...Shaft portion, 22...Spring, 23...Refining tube, 2
4...Sperm trochanter, 25...axis, 26...ridge, 2
7...Lower end part, 28...Taper part, 29...
Small diameter portion, 30...Taper induction surface, 31...Resistor, 32...Taper resistance surface, 33...Enlarged portion, 34...Induction cylinder, 35...Connecting piece, 36...
Discharge port, 37... Discharge gutter, 38... Bran suction blade, 4
2... Refining room, 43... Spiral, 44... Bolt,
45... Smooth surface portion, 46... Spherical body, 47... Shaft body, 48... Spiral tube, 49... Bolt, 50... Smooth surface portion, 51... Spherical body, 52... Shaft body, X... discharge passage.

Claims (1)

[Scope of Claims] 1. A vertical pressure system grain milling device comprising a combination of the following requirements a to f. a. Attach the downward feed spiral 18 to the vertical rotating shaft 25. b. Attach the milling trochanter 24 to the lower position of the grain feeding spiral 18 of the rotating shaft 25. c. The outer periphery of the whitening trochanter 24 is surrounded by the whitening cylinder 23. d The polishing cylinder 23 rotates diagonally up and down depending on the load. e. An annular discharge passage X centered around the shaft 25 is formed at the lower end of the polishing tube 23. f The discharge passage X widens when the polishing cylinder 23 moves downward.