JPS631900B2 - - 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.

Still another object of the present invention is to enable sensitive movement of a polishing tube which is mounted so as to be slidable up and down in order to achieve the above object.

Vertical grain milling equipment has the advantage that it is capable of milling in original shape and the incidence of broken rice is significantly lower than that of horizontal grain milling equipment.

For example, the device shown in FIG. 1 is a horizontal grain milling device, in which a grain feeding spiral B and a milling trochanter C are attached to a horizontal shaft A, and this is surrounded by a milling tube D and a grain feeding tube D'.
Brown rice is supplied from the supply port E, and a resistance lid G is attached to the discharge port F, and the rice is polished by rotating the horizontal shaft A. It has the advantage that polished rice can be obtained immediately because it is milled under great pressure, but as mentioned above, it has the disadvantage that it produces a lot of broken rice because of the forced milling. Furthermore, since the grain milling equipment shown in FIG. 1 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. , the vertical shaft H did not protrude above the trochanter I, but only downward, and the pulleys and the like were fixed below the trochanter I and were driven thereunder. In the vertical grain milling device shown in Fig. 2, when rice grains a are fed from the upper supply port J, the rice grains a are rotated horizontally by a grinding wheel (grinding wheel made of diamond sand) I.
It is milled while being stirred horizontally,
The grain is discharged from the outlet K formed at the bottom, but the defect of this vertical grain milling device is that the outlet K is located on the side of the milling room instead of at the bottom center of the milling room. Therefore, the rice grains accumulated in the portion indicated by the arrow L on the opposite side of the discharge port K are difficult to be discharged. Of course, the grinding trochanter I is 2000 per minute.
Since it rotates at a high circumferential speed like a foot, the rice grains in the area indicated by the arrow L are also horizontally agitated by the grinding rotor and discharged from the discharge port K by centrifugal force. Although it has been put into practical use and is widely used, the outlet K
If the resistance of the resistor cover M attached to the grinder is made even slightly too strong, it will suddenly become clogged, causing an accident in which the grinding rotor I will no longer rotate at all. That is,
The resistor cover M is only a sham resistor device and is used in an almost non-resistance state with almost no resistance applied, and therefore its efficiency is extremely low.

The vertical grain milling apparatus shown in FIG. 3 overcomes some of the deficiencies of the vertical grain milling apparatus of FIG. That is, the vertical shaft H does not protrude below the grinding trochanter I, but only above the grinding trochanter I, and a pulley N is attached thereto, creating an upper drive structure. It becomes possible to open the opening directly below the center of the trochanter I, and no rice grains remain as shown by the arrow L shown in FIG. 2. 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.
Since the pulley N rotates at a fairly high speed, we cannot expect a smooth inflow of rice grains, so we had no choice but to open the part indicated by arrow A, which is shifted to one side of the milling chamber, and supply rice grains from there. As a result, the supply to the whitening shops is unbalanced, which is unreasonable.

However, since vertical grain milling equipment has a feature of higher yield than horizontal grain milling equipment, it would be useful if the vertical grain milling equipment could be improved to enable pressure milling. This can be said to be an important invention as it is possible to obtain products that greatly exceed the yield limit.

The devised invention is a. Fix the white trochanter on the rotating shaft of the vertical shaft.

b. Surround the outer periphery of the whitening trochanter with a whitening cylinder to form a whitening chamber between the two.

c The polishing cylinder moves up and down according to the load.

d. The sliding surfaces of the polishing tube and the support member that supports the polishing tube so that it can move up and down are brought into contact by a plurality of point contact members that protrude from either the polishing tube or the support member toward the other.

It is a combination of the following requirements.

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 collar 5 projecting upward 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 flange 5 (FIG. 5). The flange portion 5 includes:
In addition to the supply hopper 6, a spring bearing ring 8 is attached. The outer peripheral edge 9 of the ring 8 engages with the upper inner edge of the collar portion 5, and the other portion faces the bran suction chamber 10 in the upper frame 2,
A spring receiving projection 11 is attached to the lower surface. Reference numeral 12 denotes a manual operation lever, which is fixed to the spring receiving ring 8. By holding the lever 12 and moving it 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 expands horizontally at a position above the bran suction chamber 10 of the upper frame 2, and a horizontally expanded portion 15
form. 16 is a vertical sliding tube. The inner wall 16' of the vertically sliding cylinder 16 is formed into a perfect circular cylinder.
The outer peripheral edge 15' of the enlarged portion 15 is a perfect circle,
Point contact members 15'' projecting outward are formed at three locations on the outer circumferential edge 15'.The upper end 17 of the sliding tube 16 surrounds the horizontally enlarged portion 15 and is connected to the sliding tube. 16 is formed so that it does not fall below the horizontally enlarged part 15 even if it moves down to the maximum.The outer peripheral edge 15' of the enlarged part 15 does not reach the inner wall 16' of the vertically sliding cylinder 16. , point contact member 1
5'' reaches the inner wall 16'. A grain feeding spiral 18 is provided inside the sliding tube 16. The vertical sliding tube 16
Three to four shaft parts 19 whose axes are in the radial direction are attached to the outer periphery of the shaft, and the lower end of the inclined rod 20 is pivotally attached to these shaft parts 19. The upper end of the rod 20 is pivoted to a shaft 21 attached to the upper frame 2 at a position offset from the shaft 19 in the circumferential direction. 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, by rotating the manual operating lever 12 in the horizontal direction, the spring 22
When the spring bearing ring 8 is rotated in the direction of stretching 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 bran 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 2.
form 6. 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 throughout, it may be formed into an inverted conical shape that becomes smaller in diameter as it goes downward. An adjusting device 43 is installed in the hopper 6 to adjust the width of the supply passage Y. The device 43 consists of a fixed umbrella 44 and upper and lower rings 45, and the upper and lower rings 45 are fixed to the upper and lower sliding cylinders 16 by support rods 46. The lower end portion 27 of the refined trochanter 24 is connected to the upper end of a tapered portion 28 whose diameter becomes smaller toward the bottom. 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 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 formed to have the same inner diameter as the lower end of the polishing tube 23, but the diameter becomes smaller as it goes downward until it reaches the middle part in the vertical direction. An enlarged portion 33 is formed below the tapered resistance surface 32, the diameter of which gradually increases toward the lower end. The tapered portion 28 and the tapered resistance surface 32 are provided facing each other and form an annular discharge passageway X therebetween. 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. Said small diameter portion 29
The outside is surrounded by a guide cylinder 34. Induction tube 34
The upper end 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. When the enlarged part 33 is viewed from above, it is as shown in FIG. 15. The outer peripheral edge 33' of the enlarged part 33 is formed into a perfect circle, and there are point contact members 33 that reach the inner wall 34' of the guide tube 34 at two or three places. The guide tube 34 is fixed to the upper frame 2 by several connecting pieces 35. A part of the guide tube 34 is cut out and opened to form a discharge port 36. A discharge gutter 37 is attached to the outside of the discharge port 36. The bran suction chamber 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 the bran is sucked out. In order to remove the bran, a bran suction blade 38 is provided below the taper guide surface 30.

In the embodiment shown in FIG. 7, the vertical sliding tube 16 does not rotate but simply moves up and down. Several protrusions 39 are attached to the outer periphery of the vertical sliding tube 16, and the upper A threaded rod 41 is attached to the upper wall 40 of the frame 2 so as to be vertically adjustable, and a spring 22 is attached between the protrusion 39 and the threaded rod 41.

Next, we will discuss the effect.

When raw brown rice is put into the supply hopper 6, the brown rice flows down from the supply passage Y of the hopper 6,
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. Immediately after the start of polishing, the inside of the polishing chamber 42 is empty and the polishing trochanter 24 rotates slightly. The upward movement of the upper and lower rings 45 opens the supply passage Y to the maximum extent, and the upward movement of the resistor 31 opens the tapered resistance surface 3.
2 and the tapered part 28 is made as narrow as possible, so as the white flour is gradually stored in the whitening chamber 42, its pressure gradually increases. Therefore, it is milled under high pressure and refined efficiently. Then, the rice grains in the whitening chamber 42 become clogged to the point of crushing, but at that time, the whitening tube 23 rotates in the circumferential direction together with the vertical sliding tube 16 against the elasticity of the spring 22, and the pressure is increased. and by the action of the rod 20, the upper and lower sliding tubes 16, the polishing tubes 23, the resistor 31, and the upper and lower rings 45
together with the discharge passage X as shown in Figure 13.
Open wide and hold the supply passage Y<discharge passage X.
This is to reduce the pressure and prevent the rice grains from breaking. In the case of the embodiment shown in FIG. 7, crushing is prevented by simply vertically moving the vertically sliding tube 16, polishing tube 23, and resistor 31.

When performing the above action, the polishing tube 23 and the like connect the sliding contact portion between the horizontally expanding portion 15, which is the upper support member, and the guide tube 34, which is the lower support member, to the point contact member 1.
Since 5'' and 33'' are provided, the operation is smooth.

Conventionally, horizontal grain milling equipment has been able to mill rice efficiently and has a simple power transmission mechanism, so it is easy to handle and can mill rice quickly, but it has the defect of generating a lot of broken rice, and the yield has reached its limit. Ta.
Further, although the vertical rice milling machine has a better yield than the horizontal rice milling machine, it is not possible to quickly mill rice due to its structure.

In the present invention, a polished trochanter 24 is fixed to a rotating shaft 25 of a vertical shaft.

b The outer periphery of the whitening trochanter 24 is surrounded by the whitening cylinder 23, and a whitening chamber 42 is formed between the two.

c The polishing tube 23 moves up and down depending on the load.

d The sliding surface between the polishing tube 23 and the support member that supports the polishing tube 23 so that it can move up and down includes a plurality of point contact members that protrude from either the polishing tube 23 or the support member toward the other. Contact by 15''.

Since the vertical grain milling device is constructed by combining the following requirements, (1) Since the milling tube 23 moves up and down according to the load, rice grains will not get stuck in the milling chamber even if pressure is applied and the rice is milled quickly. , vertical grain milling equipment enables rapid rice milling.

(2) The polishing cylinder 23 can be moved up and down smoothly.

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, Fig. 12 and 13 are operational views, and Fig. 14 is a horizontally expanded section. Transverse plan view, 1st
FIG. 5 is a cross-sectional plan view of the enlarged portion. 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... Bran suction chamber, 1
1... Spring receiving projection, 11... Manual operation lever, 1
3... Engaging portion, 14... Lower end of hopper, 15...
...Horizontal expansion part, 15'...Outer peripheral edge, 15''...Point contact member, 16...Vertical sliding tube, 16'...Inner wall,
17... Upper end, 18... Grain feeding spiral, 19... Shaft, 20... Rod, 21... Shaft, 22... Spring, 23... Refining tube, 24... Refining trochanter, 25...
...Shaft, 26...Protrusion, 27...Lower end, 28...
Tapered part, 29... Small diameter part, 30... Taper induction surface, 31... Resistor, 32... Taper resistance surface, 33... Enlarged part, 33'... Outer periphery,
33″...Point contact member, 34...Guiding tube, 35...
...Joining piece, 36...Discharge port, 34'...Inner wall, 3
7...Discharge gutter, 38...Suction blade, 39...Protrusion,
40...Top wall, 41...Threaded rod, 42...Refining chamber, 43...Adjusting device, 44...Fixed umbrella, 45...
...Upper and lower rings, 46...branches, X...discharge passage, Y...
...supply passage.

Claims (1)

[Scope of Claims] 1. A vertical grain milling device comprising a combination of the following requirements a to d. a. Fix the white trochanter on the rotating shaft of the vertical shaft. b. Surround the outer periphery of the whitening trochanter with a whitening cylinder to form a whitening chamber between the two. c The polishing cylinder moves up and down according to the load. d. The sliding surfaces of the polishing tube and the support member that supports the polishing tube so that it can move up and down are brought into contact by a plurality of point contact members that protrude from either the polishing tube or the support member toward the other.