JP3454649B2 - Milling equipment for milling equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice milling equipment such as a coin type, and more particularly to a stone removing device arranged in front of a rice milling machine.

[0002]

2. Description of the Related Art Coin-type rice milling equipment is known in which rice is automatically milled by inserting coins. As shown in FIG. 3, the coin-operated rice polishing equipment includes a rice polishing machine 10 for polishing brown rice into white rice, and a rice polishing machine for removing foreign matters such as stones mixed in the brown rice prior to this rice polishing operation by selecting them. There is a stone removing device 20 which prevents foreign matter from being damaged or foreign matter mixed into the white rice. In addition to these facilities, there is also one having a hulling device (not shown) for hulling.

In this type of coin-type rice polishing equipment, when treated grains such as brown rice are fed into the feeding hopper 1, the brown rice is fed to the first lifting device 2 by a screw feeder (not shown) and the like. After being transferred upward by the lifting device 2, it is passed through a foreign matter removing device 3 for removing long objects such as sawdust and metal debris, and then the stone removing device 2
0 is supplied to remove foreign matter. And the stone removing device 2
After the brown rice from 0 is transferred upward by the second lifting device 4, it is supplied to the rice polishing machine 10 to perform the rice polishing work.

As shown in FIG. 4, in the stone removing device 20, a screen 2 having a large number of ventilation holes supported swingably with one stone removing side A being high and the other grain discharging side B being low.
1 is provided, and this screen 21 is swung diagonally up and down by a drive motor (not shown). Further, below the screen 21, a fan casing 23 having a fan 22 built therein is provided. Treated grains such as brown rice are supplied onto the screen 21, 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,
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 A as the screen 21 rocks and is lifted up.

Then, when the coin-operated rice polishing equipment is started, the discharge door 24 provided at the foreign matter discharge port 26 on the stone removing side A is opened for a predetermined time (for example, 3 seconds), so that the stone removing side A is opened. Foreign substances such as stones stored in the exhaust passage are discharged through the discharge passage 25. In this way, the grains and foreign matters such as stones are gravity-sorted on the screen 21, and the foreign matters are removed from the grains.

The rice milling machine 10 is constructed, for example, as shown in FIG. A feed roll 14 and a whitening roll 15 are arranged inside a whitening chamber 13 whose inlet side is connected to a rice hopper 11 through a rotary feeder 12 for supplying raw materials, and a passage is provided at the outlet of the whitening chamber 13. A resistance plate 16 is provided for urging and limiting in the closing direction.

In the rice polishing process, the feed roll 14 and the whitening roll 15 are rotationally driven by a drive motor 17 which is a power source,
Brown rice, which is the grain to be refined and is fed from the rice hopper 11 by its own weight, is pushed toward the resistance plate 16 by the feed roll 14, and between the net 18 inside the whitening chamber 13 and the whitening roll 15 driven to rotate. The brown rice is subjected to a rice polishing treatment, and the polished rice is discharged from the white rice outlet 19 while resisting the resistance plate 16. When the urging force of the resistance plate 16 is reduced, the internal pressure of the whitening chamber 13 is low and the whiteness is low, and when the urging force of the resistance plate 16 is large, the internal pressure of the whitening chamber 13 is high. Therefore, the whiteness is increased.

[0008] As shown in FIG.
Lower limit level meter 31 for detecting the lower limit level of brown rice storage and upper limit level meter 32 for detecting the upper limit level
And are provided. After the rice equipment is started, it activates the rice mill 10 at a stage where the brown rice at a higher level than the lower level gauge 31 position has been supplied, also brown rice to the upper limit level gauge 32 a higher level than the position is When supplied, the screw feeder on the charging and feeding side is rotated at low speed or stopped to suppress the supply to the rice milling machine 10.

[0009]

By the way, the stone removing device 2
When the supply of the processed grain to the screen 21 is stopped at 0, the processed grain remains on the screen 21 without moving to the grain discharge side B. This residue of treated grains does not pose a problem if the types of treated grains are the same, but if the types of treated grains brought in by users such as coin milling equipment are not constant, different types of treated grains are mixed and treated. There was a problem that it was paid and paid out.

In particular, when the non-glutinous rice and the non-glutinous rice are switched, it is necessary to avoid mixing the processed grains. Therefore, when switching the non-glutinous rice and the non-glutinous rice, the stone removing device 20 is activated when the coin-polishing equipment is activated. In a state where the processed grain is not supplied, the discharge door 24 is opened, and the screen 21 is swung for a relatively long time (for example, 40 seconds), so that not only the foreign matter but also the processed grain remaining on the screen 21 through the discharge passage 25. Was discharged and discarded. As described above, when switching between non-glutinous rice and non-glutinous rice, the processed grain before the switching is discarded, and there is a problem that the amount of rice milled is reduced by that much.

The present invention solves the above problems, and an object of the present invention is to provide a destoning device for a rice milling facility, which can prevent the treated grains from being mixed and minimize the disposal of the treated grains. To do.

[0012]

In order to solve the above-mentioned problems, the present invention provides a stone removing device for supplying brown rice to a screen which is swingably supported to sort foreign matter such as stones and brown rice by specific gravity. pooled brown rice Oite foreign body has been removed to the stone disconnect device
Brown rice tank and brown rice from this brown rice tank
In a stone removing device of a rice polishing machine equipped with a rice polishing machine having a rice polishing room and a control means for controlling the stone removing device and the rice polishing machine ,
Flow path switching that provides a detection means to detect that the supply of brown rice to the machine has decreased and switches what is discharged from the foreign matter discharge port of the stone removing device between the waste side flow path and the rice milling machine side flow path When the detection means detects that the supply of brown rice to the rice milling machine has decreased, the control means opens the foreign matter discharge port of the stone removing device while continuing the stone removing operation of the stone removing device. The foreign matter discharged from the foreign matter discharge port is allowed to flow into the waste side flow path for a predetermined time, and then, with the foreign matter discharge port of the stone removing device opened, the brown rice discharged from the foreign matter discharge port is removed from the rice milling machine side. The flow path switching means is switched so as to flow to the flow path, and the brown rice discharged from the foreign matter discharge port subsequently to the foreign matter is controlled to be supplied to the rice polishing machine.

Here, as the detecting means, a stone removing device is used .
The lower limit level meter installed in the brown rice tank that collects the brown rice from which foreign substances have been removed and supplies it to the rice milling machine is suitable. According to this configuration, when the rice-polishing process is approaching the end, the supply of brown rice to the rice- polishing machine decreases, so this is detected by the detection means, the foreign matter discharge port of the stone removing device is opened, and stones etc. are discharged from this foreign matter discharge port. The brown rice containing the foreign matter is flown into the flow path on the waste side. After this, with the foreign matter discharge port of the stone removing device open, the brown rice discharged from the foreign matter discharge port can be switched to flow to the rice mill machine side flow path, so the brown rice remaining on the screen becomes foreign matter. Subsequently, it is discharged from the foreign matter discharge port and sent to the rice mill through the rice mill side flow path. As a result, the brown rice remaining on the screen is also polished following the normal rice polishing operation, and it is possible to prevent almost all of the brown rice except the brown rice mixed with the foreign matter, while preventing the processed grain from being mixed.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. Since the only difference from the conventional rice polishing equipment is the discharging structure from the stone removing device 20 and its control operation, the same parts are designated by the same reference numerals and the description thereof is omitted.

As shown in FIG. 1, in this rice polishing equipment, the lower limit level meter 31 provided in the brown rice tank 11 is
It is also used as a detection means for detecting that the supply of brown rice from the stone removing device 20 side to the rice polishing chamber 13 of the rice polishing machine 10 has decreased. Further, a switching valve 33 as a flow path switching means is provided at a downstream portion of the discharge passage 25 following the foreign matter discharge port 26 of the stone removing device 20, and the switching valve 33 has a posture shown by a solid line in FIG. It is freely rotatable between the postures shown in. Then, the switching valve 33 connects the flow from the discharge passage 25 to the waste side flow passage 34 when it is in the posture shown by the solid line, and in the posture shown by the phantom line, it is the rice milling machine side flow passage that follows the rice polishing machine 10. It is designed to be connected to 35. Each device including the rice milling machine 10 and the stone removing device 20 is controlled by a control unit (not shown), and the control unit has a timer unit so that it can also manage time.

The control means of this rice polishing equipment performs the following control operations. When a coin is inserted into the coin milling equipment and a start button (not shown) is pressed, the screw feeder, the first lifting device 2, the stone removing device 20 and the second lifting device 4 are driven to bring brown rice into the brown rice tank 11. It is supplied sequentially. The brown rice in the brown rice tank 11 has a lower limit level of 3
When it reaches the height of 1 and turns on, step #
From 1 to step # 2, the rice polishing machine 10 is activated and the rice polishing process is started. During the rice milling process, it is confirmed in step # 3 whether the coin charge is sufficient. If the coin runs out, the process proceeds to step # 3A and the brown rice in the brown rice tank 11 is processed. Is greater than the height of the lower limit level meter 31 and is in the ON state, the process proceeds to step # 4 and the ending operation of each device is performed.

If it is confirmed in step # 3 that the coin has not run out, the process proceeds to step # 5 to check whether the brown rice in the brown rice tank 11 is less than the height of the lower limit level meter 31 and is in the OFF state. It is judged whether or not. That is, when the milling process is approaching the end time, the stone removing device 20
As the supply of brown rice to the brown rice tank 11 is stopped and the supply of brown rice to the brown rice tank 11 is stopped, the amount of brown rice in the brown rice tank 11 is reduced. When the amount of brown rice is lower than the height of the lower limit level meter 31 of the brown rice tank 11 and is in the OFF state, and this is detected by the lower limit level meter 31 in step # 5, it is considered that the milling process is approaching the end time, and the screen is displayed. While the rocking of 21 is continued, the discharge door 24 of the stone removing device 20 is rotated obliquely upward to open the foreign matter discharge port 26, and the timer unit is started and clocked (step # 6). Further, in step # 3, when the coin is out and the brown rice in the brown rice tank 11 is less than the height of the lower limit level meter 31 and is in the OFF state in step # 3A, the rice milling process approaches the end time. If so, the process proceeds to step # 6, and the foreign matter discharge port 26 is similarly opened, and the timer unit is started and clocked. At this time, the switching valve 33 is previously set to the posture shown by the solid line in FIG. Therefore, the stone removing device 2
Foreign matters such as stones that have been drawn to the stone removing side A of 0 are discharged from the foreign matter discharge port 26 through the discharge passage 25 to the discarding side flow path 34 together with the brown rice.

After that, when the foreign matter discharge port 26 is opened and a predetermined time (for example, 3 seconds) elapses, the process proceeds from step # 7 to step # 8, and the switching valve 33 is switched to the posture shown by the phantom line in FIG. As a result, the brown rice remaining on the screen 21 is discharged from the foreign matter discharge port 26 through the discharge passage 25 to the rice mill machine side flow path 35, and then discharged into the brown rice tank 11 by the second elevating device 4. Then, the brown rice remaining on the screen 21 is discharged into the brown rice tank 11 through the rice mill side flow path 35 until the elapsed time in the timer portion reaches a predetermined time (for example, 40 seconds). In addition, the time at this time is set to such a time that all the brown rice remaining on the screen 21 is discharged.

When a predetermined time has elapsed in the timer section in step # 9, the process proceeds to step # 10, in which the foreign matter discharge port 26 is closed and the switching valve 33 is switched to the discarding side flow path 34 side for the next rice polishing. Ready for processing,
Further, the ending operation is performed in each device (step # 4).

As a result, when the end of the rice polishing process is approaching,
The unpolished rice remaining on the screen 21 is also discharged into the unpolished rice tank 11 and the rice polishing treatment is continuously performed, and then the rice polishing operation is ended, so that it is possible not only to prevent mixing with the next processed grain, but also to remove the non-glutinous rice. Almost all of the brown rice can be milled at all times even when switching to rice, and it is possible to prevent the problem of discarding the remaining rice when switching the type of processed grain as in the conventional case.

In this embodiment, the lower limit level meter 31 of the brown rice tank 11 is also used as a detecting means for detecting that the supply of brown rice from the stone removing device 20 side to the rice milling machine 10 side has decreased. Since it is used as it is, the equipment cost can be reduced accordingly. However, it is not limited to this,
A detection means may be separately provided at an optimum level as the foreign matter discharge timing in the brown rice tank 11, and further, instead of these, a detection means for detecting the discharge amount may be provided at the grain discharge side outlet of the stone removing device 20. Good.

Further, for example, it is conceivable to provide a detecting means for detecting the remaining amount in the input hopper 1, but the processed grain may be input into the input hopper 1 in small portions. Is still on the way,
When the remaining amount of the input hopper 1 becomes low, the foreign substance discharging operation may be started.
There is a risk that the processed grain that was thrown into will be discarded as the foreign matter is discharged. That is, as described above, the brown rice tank 11
By providing the detection means in the above, since brown rice remains in the brown rice tank 11 for a while even when the processed grains are subdivided into the input hopper 1, it is unlikely to make an erroneous determination as described above. There are advantages.

[0023]

As described above, according to the present invention, a detecting means including a lower limit level gauge of a brown rice tank for detecting that the supply of brown rice to the rice polishing machine is reduced is provided, and the rice polishing machine is detected by the detecting means. When it detects that the supply of unpolished rice has decreased, the foreign matter discharge port of the stone removing device is opened while continuing the stone removing operation of the stone removing device, and the foreign substance discharged from this foreign substance discharge port is discarded for a predetermined time. Pour into the flow path, and then, with the foreign matter discharge port of the stone removing device opened, switch the flow path switching means so that the brown rice discharged from the foreign matter discharge port flows into the rice mill machine side flow path. Then, by supplying the brown rice discharged from the foreign matter discharge port to the rice polishing machine, the brown rice remaining on the screen can be polished following the normal rice polishing operation, and the processed grain can be prevented from being mixed in.
Almost all brown rice except brown rice mixed with foreign substances can be milled, including the case where the type of processed grain is switched, and as a result, the reliability of the milling equipment is improved and the amount of milled rice relative to the input amount can be improved. The rate also increases.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a rice polishing equipment according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a control operation related to a foreign substance discharging operation of the rice polishing equipment.

FIG. 3 is a diagram schematically showing a conventional rice polishing equipment.

FIG. 4 is a perspective view of a stone removing device.

FIG. 5 is a cross-sectional view of a rice polishing machine.

[Explanation of symbols]

10 rice mill 11 brown rice tank 13 Rice mill 20 stone removing device 21 screen 24 discharge door 25 discharge passage 26 Foreign object outlet 33 Switching valve 34 Disposal side flow path 35 Rice mill side flow path

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-63430 (JP, A) JP-A-8-192109 (JP, A) Actual development Sho-63-28179 (JP, U) (58) Field (Int.Cl. ⁷ , DB name) B07B 1/00-15/00

Claims (2)

(57) [Claims] 1. A by supplying a brown rice swingably supporting screen reservoir and stones disconnect device for gravity separation of the foreign materials and rice, such as stone, brown rice Oite foreign matter is removed the stone disconnect device
Brown rice tank and brown rice from this brown rice tank
In a stone removing device of a rice polishing machine equipped with a rice polishing machine having a rice polishing room and a control means for controlling the stone removing device and the rice polishing machine ,
Flow path switching that provides a detection means to detect that the supply of brown rice to the machine has decreased and switches what is discharged from the foreign matter discharge port of the stone removing device between the waste side flow path and the rice milling machine side flow path When the detection means detects that the supply of brown rice to the rice milling machine has decreased, the control means opens the foreign matter discharge port of the stone removing device while continuing the stone removing operation of the stone removing device. The foreign matter discharged from the foreign matter discharge port is allowed to flow into the waste side flow path for a predetermined time, and then, with the foreign matter discharge port of the stone removing device opened, the brown rice discharged from the foreign matter discharge port is removed from the rice milling machine side. A stone removing device for a rice polishing equipment that controls the flow path switching means so that the rice flows into the flow path, and the brown rice discharged from the foreign material discharge port is supplied to the rice polishing machine following the foreign matter. Wherein sensing means, stones disconnect the rice equipment according to claim 1, wherein a lower limit level gauge provided on brown rice tank for supplying the rice mill with pooled brown rice Oite foreign matter is removed stone disconnect device apparatus.