JP2002102723A - Coin milling machine - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a coin milling machine capable of realizing space saving and energy saving in addition to eliminating remaining rice in the machine. SOLUTION: An elevator 2 and a stone removing machine 3 arranged vertically.
And a rice milling machine 4. A switching valve is provided on each of the exit side of the elevator, the debris discharging side of the destoner, and the exit side of the rice milling machine, and the switching valve is switched with good timing to perform automatic operation. Before the operation is completed, the remaining rice on the sorting plate 7 of the destoner 3 is supplied to the elevator 2
After the rice is circulated between the rice mill 4 and the rice mill, the circulated rice is discharged.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a coin milling machine.

[0002]

2. Description of the Related Art In recent years, unmanned coin-milling machines, in which customers bring in brown rice and mill themselves, have become widespread. The building of the coin milling machine is divided into a guest room and a machine room. If you put brown rice into the brown rice slot of the guest room and start the machine, the brown rice is taken into the machine room by the conveyor,
After passing through a rice mill, the stone is removed and the rice is processed. The operation during this period is performed automatically by a computer program provided in the control unit of the coin milling machine. Since customers can hardly see the inside of the machine room, the brown rice they put in,
Many people are worried whether all of them are returning as white rice.

[0003] Actually, the destoning machine and the rice milling machine are
It was unavoidable that some brown rice remained in the cabin. The stone removal machine is equipped with a sorting plate with countless fine holes in an inclined state, and pours brown rice on the sorting plate and shakes the sorting plate while sending wind from under the sorting plate, so that stone debris is sorted. Brown rice is sorted on the top of the plate, and the brown rice is pushed down by the brown rice supplied later and flows down on the sorting plate. When the brown rice is no longer supplied on the sorting board, the brown rice on the sorting board at that time remains on the sorting board forever without flowing down.

The milling room of a rice mill is usually elastically closed by a resistance plate via a spring, and the brown rice in the milling room is pushed by the brown rice supplied later to resist the resistance plate. It is discharged from the milling room. If the supply of brown rice stops, brown rice in the milling room will remain without being discharged forever.
However, if the resistor plate is opened at that point, the rice that has not been completely polished is discharged and mixed with the white rice. Immediately after the commencement of rice polishing, incompletely processed rice may be discharged.

[0005] In order to eliminate the remaining rice in the de-stoning machine and the rice milling machine due to the above, it is necessary to provide a special rice path in case brown rice is running low. JP-A-10-146566 discloses a destoner, and JP-A-10-18.
No. 0124 discloses a means for eliminating residual rice in both a destoner and a rice mill. In the coin rice milling machines shown in both publications, a destoning machine and a rice milling machine are separately arranged,
Each has two dedicated elevators (vertical bucket conveyors that pump brown rice and supply it to the hopper of a destoner and rice mill). On top of that, a route to supply the brown rice remaining on the sorting plate of the destoner to the lift of the rice mill is eliminated to eliminate the remaining rice of the destoner, and the rice mill has a two-way discharge route from the milling room. After the brown rice is reduced, the rice is circulated for a certain period of time between the rice mill and the elevator to perform rice polishing, then the resistance plate is opened and the milling room is opened. Of rice is paid out.

[0006]

The above-mentioned method can be carried out only when the destoner and the rice mill are provided with dedicated elevators. Considering that it is possible to construct a line with a single elevator if the destoning machine and rice milling machine are arranged vertically one after another, there is no waste in the space occupied by machinery and running costs. It can be said that there are many configurations.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and has as its object to provide a coin milling machine capable of realizing space saving and energy saving in addition to eliminating remaining rice inside the machine.

[0008]

In order to achieve the above object, a coin milling machine according to the first aspect of the present invention comprises: a brown rice raising / lowering device communicating with a brown rice input hopper; Milling machine, a rice milling machine, and a control unit for controlling the same. At the outlet side of the elevator, a first switching valve for switching the rice path between the stone milling machine side and the rice milling machine side is provided. The waste discharge port has a discharge gate and a second switching valve that switches the discharge path between the stone waste collection box side and the elevator side. At the outlet side of the rice mill, the rice path is connected to the white rice tank side and the elevator side. When the rice milling sensor detects that the hopper of the rice milling machine is empty, the first switching valve is switched from the destoner side to the rice milling side and the discharge gate is opened. Collect the waste in the waste collection box and raise the second switching valve Switch to the machine side to supply the remaining rice on the sorting plate to the elevator, and further switch the third switching valve from the white rice tank side to the elevator side to perform a circulating operation between the elevator and the rice milling machine for a predetermined time. 3 The switching valve is switched to the white rice tank side to open the resistance plate of the rice mill.

[0009] According to this coin milling machine, the remaining rice in the destoning machine and the milling machine can be eliminated, and by circulating the rice, the incompletely milled rice is not discharged immediately before the end of the operation. Further, since only one elevator is used, it can be installed compactly in a small space, and the power consumption can be reduced.

Further, as described in claim 2, by performing the return operation with the third switching valve as the elevator side for a predetermined time after the start of the milling, the rice which has not been completely milled immediately after the milling is started. It can be prevented from being discharged.

[0011] The coin milling machine according to claim 3 is characterized in that:
A brown rice take-in conveyor is interposed between the brown rice input hopper and the elevator, and the brown rice take-in conveyor is stopped to interrupt brown rice take-up during the return operation after the start of rice polishing. By doing so, the load on the elevator can be reduced, and it is not necessary to increase the capacity of the elevator.

[0012] The resistance plate of the rice mill is set to have a resistance so that brown rice passes through the milling room once and is polished to a desired whiteness. As it passes through the milling room, the rice is overpolished and the rice breaks,
Rice gets hot. Therefore, as described in claim 4, while performing the circulating operation before the end of the operation, the inconvenience is solved by reversing the resistance motor of the rice milling machine by a predetermined amount and weakening the resistance of the resistance plate. Rice can be polished to a moderate whiteness. It is appropriate that the ratio of the weakening resistance is about 30%.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. This coin milling machine usually has
As shown in FIG. 2, it is installed in a building 18 divided into a machine room 16 and a guest room 17. The guest room 17 has a brown rice input hopper 1, a white rice tank 10, and an operation panel 19, and a machine room 1
Reference numeral 6 includes a brown rice take-in conveyor 15, an elevator 2, a destoner 3, a rice mill 4, and a cyclone 20 for storing bran.

The brown rice take-in conveyor 15 takes in brown rice into the machine room 16 by rotating the screw shaft 21 with a motor in a U-shaped groove extending from the bottom of the brown rice input hopper 1 toward the machine room 16. Brown rice hopper 1
An insertion confirmation sensor 22 is provided at the back of the inside.
The elevator 2 is a bucket conveyor in which a bucket 24 that draws brown rice is attached to a flat belt 23 laid vertically, and brown rice hoppers 25a and 25b are provided at a lower portion. A first switching valve 5 is provided in the path of brown rice on the exit side of the elevator 2, and is branched into a destoner path 26 and a rice mill path 27.

The destoning machine 3 is basically the same as the conventional one, and supplies brown rice onto the inclined sorting plate 7 and the sorting plate 7.
By blowing the wind from below the sorting plate 7 with the fan 28 while obliquely shaking, the stone chips mixed with the brown rice due to the difference in specific gravity are sorted out. The stone debris collects on the sorting plate 7, and the brown rice rises slightly on the sorting plate 7, is pushed by the brown rice supplied later, flows downward, and flows into the hopper 12 of the rice mill 4. As shown in FIG. 3 (A), the stone waste discharge port at the upper end of the sorting plate 7 is closed by providing a discharge gate 6 as shown in FIG. 3 (A). The waste stones 29 that have fallen fall, and subsequently the remaining rice 30 on the sorting plate 7 falls. A second switching valve 9 is provided at the end of the gate 6, and is branched into a stone waste collection path 31 connected to the stone waste collection box 8 and a remaining rice collection path 32 connected to the brown rice hopper 25 b of the elevator 2. Hopper 12 of rice mill 4
A rice sensor 13 for detecting brown rice is attached to the bottom of the rice.

A milling roll 34 is provided in the milling room 33 of the rice mill 4.
The brown rice is milling rolls 34 inside the milling room 33.
While being sent by the bran, the bran is separated by the friction between the brown rice and the rubbing with the bran remover 35, and the bran is sucked by the bran collecting fan 36 through the bran remover 35 and stored in the cyclone 20. The outlet of the milling room 33 is closed by the resistance plate 14, and the magnitude of the resistance is adjusted by rotating the resistance motor 37 to the spring 3.
8 can be changed by adjusting the amount of deflection, whereby the degree of milling can be set stepwise. The milling room 33 is installed diagonally so that the exit side is downward. At the exit side of the milling room 33, a gutter for taking out white rice is provided, and further ahead, a third switching valve 11 is provided, which is connected to the discharge path 40 connected to the white rice tank 10 and the brown rice hopper 25b of the elevator 2. The rice return route 41 is provided in a branched manner.

The operation panel 19 has a shape as shown in FIG. 6, and a coin insertion slot 42, three whiteness switches 43 for selecting the degree of whitening, an indicator light 44 for an insertion fee, and the like are provided on the panel surface. I have. A control unit using a computer is configured inside the operation panel 19, and the motor and the switching valve of each unit are driven according to a program stored in advance to automatically operate the coin milling machine.

Next, the operation of the coin polishing machine of the present invention will be described with reference to the flowcharts shown in FIGS.
This coin milling machine is provided with three switching valves 5, 9, 11 and a discharge gate 6, and it is the main part of the present invention how to switch these at what time and through which path the rice flows. . In the initial state, the first switching valve 5 is at a position where rice flows to the destoner 3 side, the second switching valve 9 is to the elevator 2 side, the third switching valve 11 is to the rice flow to the elevator 2 side, and the discharge gate 6 is closed. Have been.

When a user inserts coins into the coin insertion slot 42 in accordance with the amount of brown rice to be milled, the number of coins is displayed on the charge indicator light 44, and at the same time, the three whiteness switches 43 flash. In response to this, the user puts brown rice into the brown rice hopper 1 and presses a desired whiteness switch 43. Then, the selected whiteness switch 43 is turned on, the other two are turned off, and at the same time, the brown rice take-in conveyor 15, the elevator 2 and the stone remover 3 are started to start taking brown rice, and the resistance motor 37 is set. By rotating to the value, the resistance of the resistance plate 14 is set to a predetermined strength.

When the insertion confirmation sensor 22 detects brown rice, the counting of the operation time T per coin is started.
When the brown rice is supplied to the rice mill 4 and the rice sensor 13 detects brown rice, the rice mill 4 and the rice bran fan 36 are started to start rice polishing. At this time, since the third switching valve is on the elevator 2 side, the rice is returned to the elevator 2 through the rice return path 41 without being discharged to the white rice tank 10. The reason why the returning operation is performed is that when the milling room 33 starts milling from an empty state, the incompletely milled rice is discharged from the milling room 33 immediately after the milling is started, and this is supplied to the white rice tank 10. This is to prevent Return operation is performed for a predetermined time T1.
Then, after the customer is ready to mill rice to the desired whiteness, the third switching valve 11 is switched to the white rice tank 10 to shift to the steady operation. Then, the rice is sequentially stored in the white rice tank 10 through the discharge path 40. During the return operation, the brown rice take-in conveyor 15 is stopped, and the counting of the operation time T per coin is interrupted. After moving to the steady operation, the taking of brown rice and the counting of the driving time T are restarted, and each time the driving time T per coin expires, the fee display 44 is decremented. The intake conveyor 15 is stopped.

When the hopper 12 of the rice-milling machine is emptied and the rice-milling sensor 13 is turned off, the resistance motor 37 is reversely rotated by a predetermined amount to weaken the resistance of the resistance plate 14 and at the same time,
The first switching valve 5 is switched to the rice milling machine 4 side, the second switching valve 9 is switched to the debris collection box 8 side, and the third switching valve 11 is switched to the elevator 2 side. Then, the operation is shifted to the circulation operation between the lift 2 and the rice mill 4.
Next, the discharge gate 6 is opened, and after the swarf is dropped into the swarf collection box 8 through the swarf collection path 31 during a predetermined time T2, the second switching valve 9 is switched to the elevator 2 side to select the sorting plate 7.
All the remaining rice is poured into the brown rice hopper 25b of the elevator 2 through the remaining rice recovery path 32. After a lapse of a predetermined time T3, the discharge gate 6 is closed and the stone removing machine 3 is stopped.

During a predetermined time T4, the circulation operation is performed with the resistance of the resistance plate 14 weakened, and when the circulating rice is completely white rice, the third switching valve 11 is moved to the white rice tank 10 side. , The resistance motor 37 is reversed to the origin, the resistance plate 14 is opened, and the bran collecting fan 36 is stopped. Then
Since the milling room 33 is inclined, all of the circulating rice is discharged to the white rice tank 10. After the discharge waiting time T5 has elapsed, the rice mill 4 and the elevator 2 are stopped, and the charge indicator 4
4 is displayed as 0, the whiteness switch 43 is turned off, and the operation is terminated.

The operation flow described above is one embodiment, and may be changed without changing the gist of the invention. For example, in the example shown here, the timing at which the resistance motor 37 is reversed to weaken the resistance is determined by the rice polishing sensor 13.
Is turned off, but this is the
After the remaining rice is collected, that is, the time when the counting of the circulation operation time T4 is started.

[0024]

According to the coin milling machine of the present invention, since rice does not remain in the machine, the user can mill the brown rice brought in and bring it home. Also,
Since the stone removing machine and the rice milling machine are continuously arranged vertically, and only one elevator is used, a simple line configuration can be used, so that the apparatus can be compactly installed in a small space and the power consumption can be reduced.

According to the second aspect of the invention, it is possible to prevent incompletely polished rice from being discharged to the white rice tank immediately after the start of rice polishing.

Further, according to the third aspect of the present invention, since the load on the elevator is reduced, there is no need to increase the capacity of the elevator unnecessarily, which leads to further energy saving.

According to the fourth aspect of the present invention, it is possible to prevent the rice from being excessively polished during the circulation operation, thereby preventing the rice from cracking or raising the temperature, and can perform the polished rice with good quality from the beginning to the end. It will be.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a line configuration of a coin polishing machine according to the present invention.

FIG. 2 is a schematic view of a coin polishing machine according to the present invention as viewed from above.

FIG. 3 is a vertical cross-sectional view of a stone debris discharge port of a destoner (a) and (b).

FIG. 4 is a flowchart of the coin polishing machine of the present invention.

FIG. 5 is a continuation of the flowchart shown in FIG. 4;

FIG. 6 is a front view showing an example of an operation panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Brown rice input hopper 2 Elevator 3 Destoner 4 Rice mill 5 First switching valve 6 Discharge gate 7 Sorting plate 8 Stone waste collection box 9 Second switching valve 10 White rice tank 11 Third switching valve 12 Hopper 13 Rice sensor 14 Resistance plate 15 Conveyor for taking in brown rice 37 Resistance motor T1 Return operation time after the start of rice polishing T4 Circulation operation time before the end of operation

Claims (4)

[Claims] 1. A brown rice raising and lowering machine (2) communicating from a brown rice input hopper (1), a stone removing machine (3) and a rice milling machine (4) arranged vertically one after another, and a control unit for controlling them. A first switching valve (5) for switching the path of rice between the destoner (3) and the rice mill (4) at the outlet side of the elevator (2); Has a discharge gate (6), a second switching valve (9) for switching the discharge path between the side of the waste box (8) and the elevator (2), and a rice mill (4). ) Has a third switching valve (11) for switching the rice path between the white rice tank (10) side and the elevator (2) side, and the hopper (12) of the rice mill is emptied. Is detected by the milling sensor (13), the first switching valve (5) is switched from the destoning machine (3) to the milling machine (4), Open the plate (6) to collect the waste in the waste collection box (8), switch the second switching valve (9) to the elevator (2) side, and remove the remaining rice on the sorting plate (7) by the elevator ( 2), and further, the third switching valve (11) is switched from the white rice tank (10) side to the elevator (2) side, and a predetermined time (T4) is established between the elevator (2) and the rice mill (4). The circulation operation is performed, and then the third switching valve (11) is set to the white rice tank (1).
A coin milling machine characterized by switching to the 0) side and opening the resistance plate (14) of the milling machine (4). 2. A predetermined time (T) from the start of rice polishing.
1) The coin polishing machine according to claim 1, wherein the return operation is performed with the third switching valve (11) as the elevator (2) side. 3. A brown rice input hopper (1) and an elevator (2).
The brown rice take-in conveyor (15) is interposed therebetween, and the brown rice take-in conveyor (15) is stopped to interrupt brown rice take-up during the return operation after the start of rice polishing. Or the coin milling machine according to 2. 4. During the circulating operation before the end of the operation, the resistance motor (37) of the rice mill (4) is reversed by a specified amount to weaken the resistance of the resistance plate (14). The coin milling machine according to claim 1, 2 or 3.