JPS6247068B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vertical pressure type 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.

Still another object of the present invention is that when the load in the milling room increases to the point where broken rice occurs,
The main feature is that the load is automatically reduced to prevent the occurrence of broken rice.

Vertical grain milling equipment has the advantage of being able to mill rice in its original shape and has a significantly lower incidence of broken rice than horizontal grain milling equipment. Because it is a type of grain milling equipment, it has a defect in that its milling ability is very low.

For example, the device shown in Fig. 1 is a pressure-based horizontal grain milling device, in which a grain feeding spiral B and a milling trochanter C are attached to a horizontal shaft A, and these are connected to a milling cylinder D and a grain feeding cylinder D'. The rice is milled by surrounding it, supplying brown rice from the supply port E, attaching a resistance lid G to the discharge port F, and rotating the horizontal shaft A. Because the rice is stopped, it is milled under great pressure, so it has the advantage of being milled all at once, but on the other hand, as mentioned above, because the rice is milled forcibly, there is a lot of broken rice. It has the disadvantage of In addition, since the horizontal grain milling device shown in Fig. 1 is horizontal,
Due to its own weight, the rice grains are distributed thickly in the lower layer of the milling chamber, 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 factories today use horizontal grain milling equipment.
The reality is that there are almost no rice mills that use vertical grain milling equipment.

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 rice is discharged from the discharge port K formed at the bottom, but since this vertical grain milling device mills the grain without applying excessive pressure, there is hardly any broken rice, and the surrounding area is evenly scraped. It has the advantage of being able to whiten the original shape, but on the other hand, the location of the outlet K is not at the bottom of the center of the whitening chamber, but is off to one side of the whitening chamber, so the arrow on the opposite side of the outlet K The disadvantage is that the rice grains accumulated in the L part are difficult to discharge. Of course, the grinding trochanter I is
Since it rotates at a high circumferential speed of 2000 feet, the rice grains in the area indicated by the arrow L are also horizontally agitated by the grinding rotor and guided to the discharge port K by centrifugal force, where they are discharged. Therefore, it has been put into practical use and is widely used. However, if the resistance of the resistor cover M attached to the outlet K of the vertical grain milling device shown in Fig. 2 is made too strong, It suddenly became clogged, causing an accident in which the grinding roller I stopped rotating at all. That is, the resistance lid M
is a mere sham resistance device, and is used in a near 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 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, stranded 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 Figure 3,
Since the pulley N is located at the supply port J,
This is causing problems in the supply of 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. As described above, the performance of the horizontal grain milling device has reached its limit, and the vertical grain milling device, which has a better yield than the horizontal grain milling device, has the disadvantage of low efficiency. This is a highly efficient grain milling device that takes advantage of the characteristics of a vertical grain milling device.

In the present invention, a. A refined trochanter, which is formed into a smaller system as it goes downward, is attached to a vertical rotating shaft.

b. Surround the whitening trochanter with a whitening tube of similar shape.

c The milling cylinder moves up and down according to the load in the milling room.

d. Form an annular discharge passage centered on the rotation axis at the lower center end of the whitening chamber.

e The area of the discharge passage changes as the polishing cylinder moves up and down.

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. Reference numeral 12 denotes a manually operated lever, the base of which is fixed to the spring receiving ring 8, and by holding the lever 12 and moving the lever 12 horizontally, the ring 8 can be rotated. Reference numeral 13 designates an engaging portion for fixing the lever 12 at a desired position once it has been rotated. The lower end 14 of the hopper 6 is connected to the upper frame 2.
is expanded horizontally at a position above the space portion 10 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 enlarged 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 designed in such a way that it never happens. The sliding cylinder 16 of the embodiment is formed into a cylinder having the same inner diameter from beginning to end, and there is a grain feeding spiral 1 inside the sliding cylinder 16.
8 is provided. On the outer peripheral surface of the vertical sliding tube 16,
Three shaft portions 19 are provided in the radial direction, and the shaft 19
A shaft portion 21 is attached to the upper frame 2, and a diagonal rod 2 is provided between the shaft portions 19 and 21.
0 is attached. Its concrete structure is that it is formed into a flexible joint as shown in FIG. 44, a spherical body 46 is mounted on the smooth surface 45 of the base of the bolt 44, a shaft 47 at the lower end of the rod 20 is fitted on the outside of the spherical body 46, and the inner surface of the upper frame 2 is similarly fitted. Attach the threaded tube 48 to the bolt 48, screw the bolt 49 onto it, attach the spherical body 51 to the smooth surface 50 of the bolt 49, and fit the shaft 52 at the upper end of the rod 20 on the outside of the spherical body 51. It has 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, the manual operation lever 12
When the spring receiver ring 8 is rotated horizontally in a direction to stretch the spring 22, the spring 22
becomes more elastic. 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 formed into a bran removal cylinder,
It is a hexagonal cylinder made of a punched perforated plate. Inside the polishing cylinder 23, a polishing trochanter 24, which is a friction trochanter, is attached. The whitening trochanter 24 is formed into an inverted conical shape with a smaller diameter toward the lower end, and the whitening tube 23 is also formed into a free conical shape. The grain feeding spiral 18 and the milling trochanter 24
is fixed to the upper end of the vertical shaft 25. A vertical protrusion 26 is formed on the outer periphery of the trochanter 24. 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 refined trochanter 24 is made into a blast trochanter, the shaft 25 is a hollow pipe. At the lower part of the lower end portion 27 of the refined trochanter 24, there is a tapered portion 2 that becomes smaller in diameter as it goes downward.
8 is formed. In the example diagram, an enlarged part 27' is formed between the lower end part 27 and the tapered part 28, and the diameter becomes larger toward the bottom. Because there are
If the taper part 28 were formed directly, the taper part would become too small, so an enlarged part 27' is formed in order to make the diameter larger.
The upper end of the small diameter portion 29 is joined to the lower end of the tapered portion 28 . 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 has a tapered resistance surface 32 and an enlarged portion 33 whose diameter becomes smaller toward the bottom. The vertical sliding tube 16, the polishing tube 23, and the resistor 31 have an integral structure,
The whole thing 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 . Even if the enlarged portion 33 moves upward to the maximum, it will not come off the guide tube 34. 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 guide surface 30 to suck and remove the bran. 38 is provided.

Next, we will discuss the effect. When raw material brown rice is put into the supply hopper 6, the brown rice is placed at the bottom 1 of the hopper 6.
4, receives the strong downward feeding action of the grain feeding spiral 18, and the outer surface of the milling trochanter 24 and the milling tube 23
It flows into the whitening chamber 42 formed between the inner surface of the As a result, the inflowing rice grains fall apart under their own weight while being scattered in the empty milling chamber, collide with the taper resistance surface 32 at the lower end, bounce back, and are reflected on the taper section 28, causing the taper section 28 and the taper resistance surface 32 to overlap. The discharge passage X formed by
It falls through, is guided by the taper guide surface 30, and is discharged from the discharge port 36 to the outside of the machine.

However, as the amount of rice grains supplied from the supply hopper 6 gradually increases, the rice grains begin to clog the discharge passage X as shown in FIG.
As shown in FIG. 6, the rice grains are stirred and polished while being packed together from the bottom to the top. In this case, the whitening room 24
As described above, the rice grains are packed in the chamber and milled under pressure, so it becomes a pressure-based milling device and milling is carried out efficiently. Since X is formed in an annular shape around the shaft 25, clogging rice grains shown as arrow L in FIG. 2 do not occur and are smoothly discharged.

However, as the milling progresses, the amount of rice grains supplied by the grain feeding spiral 18 is slightly larger than the amount of rice grains discharged from the discharge passage X, so the pressure inside the milling chamber 42 gradually increases, and finally The rice is on the verge of breaking into pieces. When this happens, the polishing tube 23 tries to rotate in the circumferential direction against the elasticity of the spring 22 that elastically supports it. However, since the polishing tube 23 is attached by the inclined rod 20, it performs diagonal upward and downward circular movements around the upper shaft portion 21, and at the same time the polishing tube 23 rotates in the circumferential direction. It moves up and down in the axial direction of the shaft 25. However, the whitening trochanter 24 has an inverted conical shape that becomes smaller in diameter as it reaches the lower end, and the whitening tube 23 corresponding thereto also has an inverted conical shape, so when the whitening tube 23 moves downward, the whitening chamber 42 expands. This is to relieve the pressurized state that has reached the point where the rice is on the verge of breaking.
Further, when the resistor 31 moves downward, the discharge passage X is widened as shown in FIG. 10, so that the outflow becomes active and the broken rice is prevented.

The present invention has the above-mentioned configuration and functions, and in particular: a. A polished trochanter 24 is attached to the vertical rotating shaft 25, the diameter of which becomes smaller as it goes downward.

b. Surrounding the polishing trochanter 24 with a polishing tube 23 of similar shape.

c The polishing cylinder 23 moves up and down according to the load on the polishing chamber 42.

d. An annular discharge passage X centered around the rotation axis is formed at the lower center end of the whitening chamber 42.

e The passage area of the discharge passage X changes in size as the polishing cylinder 23 moves up and down.

(1) By adopting the annular discharge passageway X, a vertical pressure-based rice milling device, which was previously impossible, becomes possible.

(2) When the polishing tube 23 moves downward, the volume of the polishing chamber 42 is increased evenly throughout, so that broken rice can be reliably prevented.

(3) Since the passage area of the discharge passage X is changed in size, a weight-type resistor is not required.

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 longitudinal sectional view of FIG. 4, FIG. 6 is a working state diagram, FIG. 7 is a cross-sectional plan view, and FIGS. 8 to 10 are working state explanatory diagrams. It is. 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 part, 18... Grain feeding spiral, 19... Shaft part, 20...
Rod, 21... Shaft, 22... Spring, 23...
Refining tube, 24... Refining trochanter, 25... Axis, 26...
...Protrusion, 27...Lower end, 27'...Enlarged part, 2
8... Taper part, 29... Small diameter part, 30...
Taper induction surface, 31...Resistor, 32...Taper resistance surface, 33...Enlarged portion, 34...Induction tube, 35...Connection piece, 36...Exhaust port, 37...
Discharge gutter, 38... Bran suction blade, 42... Refining room, 4
3...Screw tube, 44...Bolt, 45...Smooth surface part,
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 refining device that combines the following requirements a to e. a. Attach the refined trochanter, which has a smaller diameter toward the bottom, on the vertical rotation shaft. b. Surround the whitening trochanter with a whitening tube of similar shape. c The milling cylinder moves up and down according to the load in the milling room. d. Form an annular discharge passage centered on the rotation axis at the lower center end of the whitening chamber. e The area of the discharge passage changes as the polishing cylinder moves up and down.