JPH09234426A - Stone removing device for coin type rice milling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stone removing device for coin type rice milling equipment capable of shortening the time after a selection push button is pushed or coins are fed before the stone removing operation of the grains for this time is performed while being capable of surely discharging the grains, etc., remaining in the previous time. SOLUTION: The stone removing operation of the stone removing device 10 is started when the feeding of the grains into a feed hopper is detected by a feed detecting sensor. The stone removing operation is performed until the presence of the no more materials discharged from a foreign matter discharge port is detected by a discharging state detecting sensor, by which the residual grains, etc., of the previous time are surely discharged. The operation to feed the grains to a screen 11 of the stone removing device 10 is performed when the end of the stone removing operation of the grains, etc., of the residual components is detected and the operation to feed the coins or the selection operation is performed, by which the time before the stone removing operation of the fed grains is performed is shortend.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stone removing device arranged in a preceding stage of a rice polishing device in a rice polishing facility, and more particularly to a stone removing device of a coin type rice polishing facility which is automatically operated by inserting a coin.

[0002]

2. Description of the Related Art There is known a coin-type rice milling machine in which rice milling is automatically performed by inserting coins. This coin-operated rice polishing equipment is a rice polishing device that polishes brown rice into white rice, and foreign substances such as stones mixed in the brown rice are sorted and removed prior to this rice polishing operation. Some have a stone removing device for preventing the mixture of the stones. Further, in addition to these facilities, there is also one having a hulling device for hulling.
In this type of coin-operated rice polishing equipment, when brown rice is fed into a loading hopper, the brown rice is first supplied to a stone removing device to remove foreign matters, and then the rice polishing operation is performed in the rice polishing device.

The stone removing device is provided with a breathable screen which is swingably supported with one stone removing side being high and the other grain discharging side being low, and this screen is slanted vertically by a drive motor. Rocked to. A fan casing with a built-in fan is provided below the screen. Treated grains such as brown rice are supplied on the screen, and the treated grains are blown up by the air and slightly lifted up. In this state, the treated grains are further supplied to move to the grain discharge side. On the other hand, since foreign matters such as stones having a larger specific gravity than the treated grain do not float up, they gather on the stone removing side as the screen is swung up and lifted. As a result, the grains and the foreign substances such as stones are subjected to specific gravity selection on the screen, and the foreign substances are removed from the grains.

By the way, at the end of the stone removing operation, the supply of the treated grain is stopped, so that the treated grain does not move to the grain discharge side, and the grain remains on the screen.
This does not cause a problem if the types of processed grains are the same, but if the types of processed grains brought in by users are not constant, such as with coin milling equipment, different types of processed grains are mixed and processed and paid out. Will be done. Therefore,
To prevent this, Japanese Patent Publication No. 4-23
The following are proposed in Japanese Patent No. 583 and Japanese Utility Model Publication No. 6-28185.

In Japanese Examined Patent Publication No. 4-23583, when the push button for selecting the type of rice is pushed after the brown rice is put into the throwing hopper, only the stone removing device is punched into another device such as the rice polishing device. Disclosed is a stone removing device in an unmanned rice milling facility, which is configured to discharge the brown rice remaining in the previous time in the stone removing device before the brown rice is supplied from the input hopper to the stone removing device by driving the discharge for a predetermined time. Has been done. According to this, since the brown rice or the like remaining in the previous time in the stone removing device is discharged in advance, it is possible to reduce the mixing of grains such as brown rice between the previous time and this time.

In Japanese Utility Model Publication No. 6-28185,
An automatic opening / closing stone removing valve 24 is provided to automatically open when a coin is inserted and automatically discharge the remaining rice before that, and to automatically close after a certain period of time and perform stone removing work of the rice grains supplied thereafter. A coin type rice milling device is disclosed. This also discharges the brown rice and the like remaining in the previous time in the stone removing device, so that mixing of grains such as brown rice in the previous time and this time can be reduced.

[0007]

However, in any of the stone removing devices of the above publications, when discharging the residue on the screen, a timer or the like is used to set the discharge end time from the stone removing device to a fixed time. Because it is set,
The grain removal device may be stopped when grains remain on the screen, and the grains for this time are supplied on the screen even if the grains remaining for the previous time still remain. There is a possibility that the grain of the previous time and the grain of this time will be mixed.

In addition, after pressing the selection push button or inserting a coin, the stone removing device performs the previous work of removing the remaining grains and the like, and thereafter performing the stone removing operation of the current grain. There is also a problem that it takes a relatively long time to perform the stone removing operation for this grain.

The present invention solves the above-mentioned problems, and while the grain of the remaining residue of the previous time can be reliably discharged, the grain of the current grain is pushed after pressing the selection push button or inserting a coin. It is an object of the present invention to provide a stone removing device for a coin-type rice milling equipment, which can shorten the time until the stone removing operation.

[0010]

In order to solve the above-mentioned problems, a stone removing device of a coin-type rice polishing equipment of the present invention supplies treated grains to a screen which is swingably supported to remove grains and foreign substances such as stones. In a coin-type rice milling equipment equipped with a stone removing device for performing specific gravity selection, and a rice polishing device for whitening grains from which foreign substances have been removed by the stone removing device, in the stone removing device, a grain input part to the stone removing device The input detection means for detecting that the grain has been input to the container, the discharge state detection means for detecting the discharge state of the foreign material and the grain from the foreign material discharge port of the stone removing device, and the input detection means for inputting the grain into the input section. And a control means that starts the stone removing operation of the stone removing device when it detects that the foreign matter or grain is no longer discharged from the foreign matter discharge port by the discharge state detecting means, and Is provided .

With this configuration, the stone removing operation is performed until it is detected that the foreign matter or grain is no longer discharged from the foreign matter discharge port, so that the last remaining grain or the like can be reliably discharged.

Further, when it is detected that the stone removing operation for the residual grains and the like is completed and the coin inserting operation or the selecting operation is performed, the grain inserting operation on the screen of the stone removing device is performed. By performing the operation, when the operation of adding the grain to the screen of the stone removing device is performed, that is,
Before pressing the select push button or inserting a coin,
Since the last remaining grains and the like are discharged, it is possible to shorten the time from inserting a coin to performing the stone removing operation for this grain.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the coin-operated rice polishing equipment is provided with an input hopper 1 as an input unit for inputting a processed grain such as brown rice for rice processing, and a screen 11 supported so as to be swingable. Stone removing device 10 for selecting specific gravity of grains and foreign substances such as stones, and a rice polishing device 2 for whitening grains from which foreign substances have been removed by the stone removing device 10.
0, and the upper conveyer device 3 including a screw conveyor that receives the grain from the stone removing device 10 at the lower supply port 31 and conveys it upward, and discharges it from the upper discharge port 32 to the rice polishing device 20 side.
0 is provided. In addition, on the customer service surface 2 such as the front part of the coin-type rice polishing equipment, the coin insertion slot 3, the type of grain to be polished (such as glutinous rice or sticky rice) and the degree of milling (upper white, white rice, 7 minutes, 5 minutes, etc.) ) Are provided for selecting a plurality of selection push buttons 4.

The rice polishing apparatus 20 is constructed, for example, as shown in FIG. A feed roll 24 and a whitening roll 25 are arranged inside a whitening chamber 23, the inlet side of which is connected to a rice polishing hopper 21 via a raw material supply device 22, and a passage is closed at the outlet of the whitening chamber 23 in a closing direction. A resistance plate 26 for urging and limiting is provided. Feeding roll 24 for rice polishing
And the whitening roll 25 are rotationally driven by a drive motor 27 which is a power source, and the brown rice as the grain to be milled introduced from the rice hopper 21 by its own weight is pushed toward the resistance plate 26 by the feed roll 24, and the whitening chamber Brown rice is milled between the net 28 inside 23 and the milling roll 25 which is driven to rotate, and the milled milled rice is discharged from the milled rice outlet 29 while resisting the resistance plate 26. When the urging force of the resistance plate 26 is reduced, the internal pressure of the whitening chamber 23 is lowered and the whiteness is lowered. When the urging force of the resistance plate 26 is increased, the internal pressure of the whitening chamber 23 is high. Therefore, the whiteness is increased.

The stone removing device 10 is constructed, for example, as shown in FIG. Screen 11 of the stone removing device 10
A large number of ventilation holes are formed in this screen 11,
One stone removing side A is set high and the other grain discharging side B is set low to be swingably supported, and is tilted vertically by a drive motor (not shown). Below the screen 11, a fan casing 13 containing a fan 12 is provided. Treated grains such as brown rice are supplied onto the screen 11, the treated grains are blown up by the air and slightly floated, and in this state, the treated grains are further supplied to move to the grain discharge side B. On the other hand, foreign matters such as stones having a larger specific gravity than the treated grain are collected on the protrusions of the screen 11, and thus gather on the stone removing side A as the screen 11 is swung up and lifted. As a result, the grain and the foreign substances such as stones are sorted by specific gravity on the screen 11, and the foreign substances are removed from the grain.

By the way, at the end of the stone removing operation, the processed grains are no longer supplied, so that the processed grains do not move to the grain discharge side B, and the grains remain on the screen 11, so that the grain will be left as it is next time. If the grain is supplied onto the screen 11, there is a problem that these grains are mixed with each other. Therefore, this stone removing device 10
In the above, when grain is thrown into the throw-in hopper 1, control means (not shown) controls to discharge the grain remaining on the screen 11 in advance without opening the throw-in hopper 1.

That is, as shown in FIG. 1, the input hopper 1
A hopper opening / closing shutter 5 that opens and closes a supply passage to the stone removing device 10 is provided in the lower part of the, and an input detection sensor 6 such as a capacitance sensor that detects that grain has been input to the input hopper 1. Is provided. Further, the foreign substance discharge port 14 provided on the stone removing side A of the stone removing device 10 detects a discharge state detection sensor 15 for detecting that foreign substances such as stones are discharged from the foreign substance discharge port 14 such as residual grains. Is provided.

Then, the control means performs a control operation as shown in FIG. First, in step S1, when the grain is thrown into the throw-in hopper 1 and the grain is detected by the throw-in detection sensor 6, the stone removing operation of the stone removing device 10 is started with the hopper opening / closing shutter 5 kept closed. (Step S
2). As described above, when the stone removing device 10 is driven without supplying the grain to the stone removing device 10, all the grains and foreign matters remaining on the screen 11 are moved toward the stone removing side A by the swing motion of the screen 11. Grains and foreign substances are sequentially discharged from the foreign substance discharge port 14 while moving.

When the stone removing device 10 is driven in this way,
In step S3, the discharge state detection sensor 15 detects whether grain or foreign matter is discharged from the foreign matter discharge port 14. When the discharge state detection sensor 15 no longer detects the grain or the foreign matter discharged from the foreign matter discharge port 14, it is determined that all the grains or the foreign matter remaining on the screen 11 have been discharged. Next, a coin is inserted into the coin insertion slot 3, and then the selection push button 4 is pressed to specify the type of grain to be polished and the degree of whitening.
It is determined in S4 and S5. When the selection push button 4 is pressed to specify the type of grain to be milled and the degree of milling, the hopper opening / closing shutter 5 is opened (step S6), and the grain fed from the feeding hopper 1 this time is displayed on the screen 11. And the foreign matter removing operation of this grain is performed (step S7).

After this, the grains from which foreign substances have been removed are successively conveyed to the rice polishing device 20 by the upper conveying device 30,
Rice is milled in the rice milling apparatus 20 (step S8). According to this configuration, since the stone removing operation is performed until it is detected that the foreign matter or grain is no longer discharged from the foreign matter discharge port 14, it is possible to reliably discharge the grain and the like of the previous residual amount, and With this, it is possible to prevent the grain of this time from being mixed.

Further, the stone removing device 10 is driven at the time when the operation of inserting the grain into the inserting hopper 1 is performed, that is, before the selection push button 4 is pressed or the coin is inserted.
Compared to the previous configuration in which the stone removal device removes the residual grain of the previous time in order to discharge the residual grain of the previous time, after pressing the selection push button or inserting a coin. , The time from the time of inserting the processed grain to the input hopper 1 to pressing the selection pushbutton or inserting the coin is shorter than the time of performing the grain removing operation of this time as compared with the conventional configuration. can do.

In this embodiment, the case of the horizontal type rice milling device 20 is illustrated, but it is needless to say that the present invention is not limited to this and can be applied to, for example, a vertical type rice milling device. Further, if the last remaining grain and the like have been discharged, the grain may be thrown into the screen of the stone removing device by pushing the selection push button only by inserting the coin. Further, it goes without saying that the present invention can be applied to a coin-type rice polishing facility having a huller.
Furthermore, it is needless to say that the charging detection sensor 6 may be other than the capacitance sensor, and may be detected based on the weight of grain to be charged or the like.

[0023]

As described above, according to the present invention, when the input detecting means detects that a grain has been input to the input portion, the stone removing operation of the stone removing device is started and the discharge state detecting means detects the grain. By performing the stone removing operation until it detects that the foreign matter or grain is no longer discharged from the foreign matter discharge port,
It is possible to reliably discharge the last remaining grain, etc., and prevent the previous and current grains from being mixed.

Further, when it is detected that the stone removing operation of the residual grain and the like is completed and the coin inserting operation or the selecting operation is performed, the grain inserting operation to the screen of the stone removing device is performed. By performing the step, it is possible to shorten the time required to perform the stone removing operation of the input grain.

[Brief description of drawings]

FIG. 1 is a front view of a coin rice polishing equipment according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a rice polishing apparatus of the coin rice polishing equipment.

FIG. 3 is a perspective view of a stone removing device of the same rice polishing equipment.

FIG. 4 is a flowchart showing a residue removing operation of the stone removing device of the coin rice polishing equipment.

[Explanation of symbols]

 1 Input Hopper 3 Coin Input Port 4 Selection Push Button 5 Hopper Opening / Closing Shutter 6 Insertion Detection Sensor 10 Stone Removal Device 11 Screen 14 Foreign Material Discharge Port 15 Discharge State Detection Sensor 15 20 Rice Polishing Device

Claims (2)

[Claims] 1. A stone removing device for supplying a treated grain to a swingably supported screen to sort the grains and foreign substances such as stones by gravity, and a milled rice for whitening the grain from which the foreign substances have been removed by the stone removing device. In a coin type rice milling equipment equipped with a device,
In the stone removing device, an input detecting means for detecting that a grain has been input to the grain input portion of the stone removing device, and a discharge state for detecting a discharge state of a foreign substance and a grain from a foreign substance discharge port of the stone removing device. When the detection unit and the input detection unit detect that a grain has been input into the input section, the stone removing device starts the stone removing operation, and the discharge state detection unit prevents the foreign substance or grain from being discharged from the foreign substance discharge port. A stone removing device for coin-operated rice polishing equipment, which is provided with control means for performing the stone removing operation until it is detected. 2. The control means of the stone removing device detects the completion of the stone removing operation, and when the coin inserting operation or the selecting operation is performed, the grain of the grain on the screen of the stone removing device is detected. The stone removing device for coin-type rice milling equipment according to claim 1, which performs an inserting operation.