JPH0771638B2 - Roll in rice mill - Google Patents

Description

TECHNICAL FIELD The present invention relates to a rice polishing machine, and more particularly to rolls in a rice polishing machine.

[Conventional technology]

Conventionally, as a rice milling machine that rotatably installs a stirring roll in a bran wire mesh and stirs the rice grains by the stirring protrusions of the stirring roll, the rice is refined by friction between the grains. (Fig. 8), JP-A-55-99349, 60-12205
0 outside is known.

[Problems to be Solved by the Invention]

In the whitening device of JP-B-54-3098 shown in FIG. 8, a screw type conveyor (screw roll) 102 and a rotor 103 (stirring roll) are fixed to a shaft 101 rotatably erected, and the periphery of the rotor 103 is , A screen 104 is erected while maintaining a certain gap (whitening chamber) (usually divisible), a hopper 105 for supplying raw materials is connected to a lower portion of the screw type conveyor 102, and a rotor 103 is provided above the rotor 103. Is provided with an outlet 107 for milled rice through an extraction device 106, whereby the raw rice fed from the hopper 105 is lifted by a screw type conveyor 102, and is granulated while being stirred by a rotor 103. Polishing progresses due to friction, and polished rice is extracted by the extraction device 106.
Is scraped out of the outlet 107 by.

By the way, the screw conveyor 102 and the rotor 103 are significantly worn because the rice grains are pumped and agitated under a strong pressure, and in particular, the rotor 103 needs to be replaced about twice as frequently as the screw conveyor 102. In this replacement, the upper bearing portion 100, the pulley 108 for rotating the shaft 101, the extraction device 106, and the like are removed, and the screen 104 is divided into split parts to expose the rotor 103 and the screw type conveyor 102, and then, The rotor 103 and the screw type conveyor 102 had to be pulled out upward, which was very troublesome.

An object of the present invention is to provide a roll in a rice polishing machine, which can easily replace the stirring roll and the screw roll in consideration of the above.

[Means and Actions for Solving Problems]

In order to solve the above-mentioned problems, the present invention has a main shaft rotatably provided, and a stirring roll and a screw roll connected to each other.
In a rice milling machine in which the stirring roll is surrounded by a bran removal mesh and a polishing chamber is formed between them, the stirring roll and the screw roll are separately formed with respect to the main shaft so that they can be detached from the side thereof. Then, the technical means was taken such that the connecting portion and the open end portion of both rolls were individually fitted to the inner peripheral side of the ring-shaped member and fixed to the main shaft.

As a result, when the agitating roll or the screw roll is worn and replaced, the bran removal wire mesh is disassembled to expose the agitating roll and the screw roll, and the connecting portion of the agitating roll and the screw roll and the open ends of both rolls are inserted. Remove the ring-shaped member appropriately and divide the stirring roll or screw roll laterally with respect to the spindle to remove each roll from the spindle, and match the divided replacement stirring roll or screw roll from the side of the spindle. At the same time, the connection between the agitating roll and the screw roll and the open ends of both rolls are fitted (fitted) by the inner peripheral side of the ring-shaped member, and then the bran removal mesh is assembled to complete the exchange.

Example of Invention

Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side sectional view of an embodiment of the present invention, and FIG. 2 is a partially enlarged view of FIG. A main shaft 1 having an upper half part as a hollow part 1a and a lower end part having a main shaft pulley 2 attached thereto is rotatably supported by an upper bearing 4 and a lower bearing 5 mounted on a frame 3, and at the same time, The lower surface of the annular locking projection 6 formed in the lower part is locked to the lower bearing 5 to prevent the main shaft 1 from descending. On the other hand, the upper surface of the locking projection 6 locks the ring member formed with the mortar-shaped fitting recess 7, that is, the clutch ring 8 so as not to slide down.

On the upper part of the clutch ring 8, a tapered fitting convex part 9 is formed on the lower end part thereof and a screw roll 10 which can be divided into two is provided. That is, as shown in FIG. 5, the screw roll 10 is composed of two divided screw rolls 10A and 10B, and the lower ends (open ends) of the screw rolls 10 are fitted into the fitting recesses 7 of the clutch ring 8. A compound convex portion 9 is provided, and a screw thread 11 for pumping rice grains is formed on the peripheral surface. Further, the clutch ring 8 and the main shaft 1, and the lower portion of the screw roll 10 and the main shaft 1 are securely fixed to each other by a key 12 as a rotation stop. The upper part of the screw roll 10 and the main shaft 1 are engaged with each other by a non-rotating key 13, and the upper part of the screw roll 10A and the upper part of the screw roll 10B (coupling part) are ringed in a circumferential groove 14 formed in each upper end part. Member, ie tightening ring 15
It is fixed together by fitting.

A mortar-shaped mating recess on the inner circumference of the upper end of the screw roll 10.
16 is formed, and the tapered fitting convex portion 20 formed at the lower end of the stirring roll 17 is fitted into the fitting concave portion 16 to fix the lower end of the stirring roll 17. That is, the stirring roll 17
(See FIG. 3), the stirring rolls 17A and 17B are provided when the stirring protrusions 18 and the air blow grooves 19 provided along the stirring protrusions 18 are one pair each.
In the case where the stirring projections 18 and the blast grooves 19 are each three (see FIG. 6), the stirring rolls 17C, 17D, 17E are divided into three. Then, the stirring rolls 17A and 17B or the stirring roll 1
The fitting protrusion 20 at the lower end of each of 7C to 17E is fitted into the fitting recess 16 at the upper end of the screw roll 10, and the stirring roll 17 and the main shaft 1 are securely fixed by the rotation preventing key 13.

Although the upper end portion (open end) of the stirring roll 17 is configured, a fitting convex portion 21 is formed on the inner peripheral portion of the upper end of the stirring roll 17, and on the other hand, a male screw portion 22 engraved on the upper portion of the main shaft 1 is screwed ( Female) mating
A fitting recess 24 is provided on the lower surface side of the pressing metal fitting 23 having 23a, and the pressing metal fitting 23 is tightened into the male screw portion 22 to fit the fitting recessed portion 24 and the fitting projection 21 to each other, and thereby the stirring roll
The upper end portion (open end) 17 is integrally fixed, and the stirring roll 17 and the screw roll 10 are pressed against the clutch ring 8 at the lower end to be integrally formed.

The inside of the stirring roll 17 is formed as a hollow portion 17a, and a large number of ventilation holes 25 communicating with the hollow portion 1a of the main shaft 1 are formed in the main spindle 1. Further, the hollow portion 1a of the main shaft 1 is provided with a blower 26. Connected to. In addition, in order to prevent rice grains from entering, a wire mesh 17b may be stretched over the hollow portion 17a.

Around the agitating roll 17, a large number of slits 27a are formed at regular intervals, and the bran removal mesh 27 is formed in a polygonal cylinder shape.
Is erected. That is, when the stirring rolls 17 have a pair of stirring protrusions 18 (see FIG. 3), as shown in FIG. 4, they are usually formed in a hexagonal cylinder, and when the stirring protrusions 18 are three (see FIG. 6). ), A hexagonal tube or the like is used as shown in FIG.
The debranching wire net 27 is reinforced by a wire netting support 28 fixed to the frame 3, and the gap between the agitating roll 17 and the bran wire netting 27 is formed as a whitening chamber 29. Further, the bran wire netting 27 is divided into a plurality of parts. They are formed (see FIGS. 4 and 7) and fixed to each other with bolts and nuts 27b. In order to surround the whitening chamber 29, a bran removing chamber 30 is formed around the bran removing wire net 27, and the bran removing chamber 30 is provided with a bran collecting device (cyclone collector) (not shown) via a bran removing duct 31. Etc.).

A discharge port 32 is opened at the upper part of the polishing chamber 29, and the discharge port 32 has
A resistance plate 33 connected to an automatic resistance adjusting device 34 is mounted to regulate rice grains discharged from the discharge port 32. That is, the tooth shaft 37 horizontally moved by the forward / reverse rotation electric motor 36 having a built-in linear head so that the current setting value set in the main electric motor 35 for rotating the main shaft 1 via the operation panel (not shown) is kept constant. The lever 38, which is made of a flexible material and is interlocked with and rotates with respect to the resistance plate shaft 39, causes the resistance plate 33 to rotate far and far with respect to the discharge port 32. Further, a downflow gutter 40 is provided so as to be connected to the discharge port 32, and a downflow gutter 41 is connected to the downflow gutter 40.

Although it is a raw material supply device, it has a bottomed cylindrical funnel (rotator) table 42 in which a screw roll 10 is rotatably built in, and a supply port 43 is opened in the lower peripheral wall of the base 42, and a supply screw 44 is provided outside the supply port 43. Is connected to a supply gutter (hi) 45, and the supply gutter 45 is provided with a supply hopper 46. A pulley 47 is attached to the shaft end of the supply screw 44 by a motor 48. It receives rotational force.

Next, a transmission device from the main motor 35 to the main shaft pulley 2 will be described. A pulley 52 and a pulley 53 are mounted on the upper and lower parts of an intermediate shaft 51 rotatably erected by an upper bearing 49 and a lower bearing 50. The pulley 52 is linked by a motor pulley 54 of a main electric motor 35 and a V belt 55. In addition to being connected, the pulley 53 is interlockingly connected to the main shaft pulley 2 by a V belt 57 via a tension pulley 56.

The specific operation of the above embodiment will be described below.

First, the main motor 35 is started by the operation button of the operation panel (not shown), and the motor 48 is turned on to supply the gutter 45.
The feed screw 44 is driven to set the current value of the main motor 35 by the automatic resistance adjusting device 34. The rotational force of the main electric motor 35 is transmitted to the intermediate shaft 51 via the pulley 52, and further transmitted to the main shaft pulley 2 by the pulley 53 to rotate the screw roll 10 and the stirring roll 17 together with the main shaft 1.

When the preparation for operation is completed in this way, the raw rice grains (brown rice) are put into the supply hopper 46 through a chute from a stone removing sorter (not shown). Rice grains in the feed hopper 46 are
It is forcibly sent from the supply port 43 into the funnel stand 42 by 44, and is pumped into the polishing chamber 29 by the screw roll 10. The rice grains that have reached the whitening chamber 29 are stirred by the stirring protrusions 18 of the rotating stirring roll 17, and undergo grain friction under high pressure to progress the polishing. That is, the discharge port 32 in the upper part of the whitening chamber 29 is regulated by the resistance plate 33, and the rice grain is pumped from the lower part of the whitening chamber 29 by the screw roll 10 and the own weight of the rice grain is added, so that the internal pressure of the whitening chamber 29 is moderate It rises and smoothes the whitening effect.

The polished rice grains are pushed up by the screw rolls 10 to the rice grains to be pumped, sequentially discharged from the discharge port 32 against the resistance plate 33, and taken out of the machine through the downflow gutter 40 and the discharge gutter 41. On the other hand, the bran generated in the polishing chamber 29 leaks into the bran removing chamber 30 from the slit 27a of the bran removing wire net 27 while being promoted by the wind blown from the air blow groove 19, and then to the bran collecting device (not shown). It is conveyed to the outside of the machine through the bran duct 31 by the provided fan.

The above is the steady operation, but when the stirring roll 17 or / and the screw roll 10 is worn due to long-term use, the pumping action and the stirring action are attenuated and good rice polishing cannot be performed,
These lead to situations where these need to be replaced. Below, each roll
The exchange of 10,17 will be described. The cover 30a of the bran removal chamber 30 is opened (opened and closed by a hinge or the like), the wire mesh support 28 is removed from the frame 3, and the bolts and nuts 27b of the bran removal mesh 27 are removed (see FIG. 4 and FIG. (See Fig. 7), disassemble the bran-removing wire mesh 27 into 2 pieces (3 pieces in case of 9-sided mesh)
(Split) Part of the stirring roll and the screw roll 10 is exposed. Next, the pressing metal fitting 23 is loosened, the fitting concave portion 24 of the pressing metal fitting 23 and the fitting convex portion 21 at the upper end of the stirring roll 17 are removed, and the fitting convex portion 20 at the lower end of the stirring roll 17 is fixed to the screw roll 10.
As shown in FIG. 3, the stirring roll 17 is separated from the fitting recess 16 on the upper side, and the stirring roll 17 is divided into two parts laterally with respect to the main shaft 1 and taken out. Needless to say, if the stirring roll 17 can be divided into three parts, it is divided into three parts and removed from the spindle 1 as shown in FIG.

Subsequently, when replacing the screw roll 10, the tightening ring 15 of the circumferential groove 14 at the upper end of the screw roll 10 is pulled out above the main shaft 1 and removed, and then the fitting projection 9 at the lower end of the screw roll 10 is clutched. While detaching from the fitting recess 7 of the ring 8, the screw roll 10
Is lifted from inside the funnel base 42 to information, divided into two parts on the side of the main spindle 1, and removed from the main spindle 1.

In order to mount the replacement stirring roll 17 and the screw roll 10 on the spindle 1, contrary to the above, the tapered fitting convex portion 9 at the lower end of the screw roll 10 is fitted into the fitting concave portion 7 of the clutch ring 8. Together (at this time, the key 12 is fitted into the key groove 12a), the upper end thereof is tightened by the tightening ring 15, and the stirring roll 17 and the lower end of the stirring roll 17 are further fitted into the fitting recess 16 at the upper end of the screw roll 10. While fitting and joining the tapered fitting convex portion 20 (at this time, the key 13 is fitted into the key groove 13a), the fitting convex portion 21 at the upper end of the stirring roll 17 is formed into the fitting concave portion of the pressing metal fitting 23. And the pressing metal fitting 23 is tightened into the male threaded portion 22, whereby the screw roll 10 and the stirring roll 17 are integrally fixed to the spindle 1 again.

〔The invention's effect〕

As described above, according to the present invention, each of the stirring roll and the screw roll is divided and formed so as to be detachable from the side of the main shaft, and the connecting portion and the open end portion of both rolls are formed. Since each was individually fitted to the inner peripheral side of the ring-shaped member and fixed to the main shaft, when the screw roll and the stirring roll are worn and replaced, the conventional upper bearing portion of the main shaft is disassembled to disassemble the screw roll. In addition, a large-scale work of pulling out the stirring roll from the main shaft upward is not required, and the ring-shaped member can be easily attached to and removed from the main shaft only by attaching and detaching the ring-shaped member to the open end and the connecting portion of each roll.

[Brief description of drawings]

FIG. 1 is a side sectional view of an embodiment of the present invention, FIG. 2 is a partially enlarged view of FIG. 1, FIGS. 3 to 4 are sectional views taken along the line AA in FIG. 2, and FIG. FIG. 6 is a sectional view taken along line B, FIG. 6 is another embodiment of FIG. 3, FIG. 7 is another embodiment of FIG. 4, and FIG. 8 is a front sectional view showing a conventional example. 1 ... spindle, 2 ... spindle pulley, 3 ... frame, 4
...... Upper bearing, 5 ...... Lower bearing, 6 ...... Locking protrusion, 7 ...
… Fitting recess, 8 …… Clutch ring, 9 …… Fitting projection,
10 …… Screw roll, 11 …… Screw thread, 12,13 …… Key, 14
...... Circumferential groove, 15 ...... Tightening ring, 16 …… Mating recess, 17 ……
Stirrer roll, 18 ... Stirrer protrusion, 19 ... Blaze groove, 20, 21 ...
… Mating projection, 22 …… Male thread, 23 …… Pressing fitting, 24…
… Mating recess, 25 …… Ventilation hole, 26 …… Blower, 27 …… Bran mesh, 28 …… Bran mesh support, 29 …… Whitening room, 30 …… Bran room, 31 …… Bran duct, 32 …… outlet, 33 …… resistance plate,
34 …… Automatic resistance adjustment device, 35 …… Main motor, 36 …… Forward / reverse rotation motor, 37 …… Tooth shaft, 38 …… Lever, 39 …… Resistance plate shaft, 40 …… Downflow trough, 41 …… Discharge Gutter, 42 ... Funnel stand, 43 ...
… Supply port, 44 …… Supply screw, 45 …… Supply gutter, 46…
… Supply hopper, 47 …… Pulley, 48 …… Electric motor, 49…
… Upper bearing, 50 …… Lower bearing, 51 …… Intermediate shaft, 52,53…
… Pulley, 54 …… Motor pulley, 55 …… V belt, 56 …… Tension pulley, 57 …… V belt 100…
... Upper bearing, 101 ... Shaft, 102 ... Screw conveyor, 103 ... Rotor, 104 ... Screen, 105 ... Hopper, 106 ... Extractor, 107 ... Outlet, 108 ... Pulley.

Claims (2)

[Claims] 1. A rice milling machine comprising a rotatably mounted main shaft in which a stirring roll and a screw roll are connected to each other, and the stirring roll is surrounded by a bran-removing wire mesh to form a polishing chamber between them. , The stirring roll and the screw roll are separately formed with respect to the main shaft so that they can be detached from the side,
A roll in a rice polishing machine, characterized in that the connecting portion and the open end portion of both rolls are individually fitted to the inner peripheral side of a ring-shaped member and fixed to the main shaft. 2. A roll in a rice milling machine according to claim 1, wherein the open end of the stirring roll is fixed by screwing the ring-shaped member onto a main shaft. .