JPH0427904B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an apparatus for controlling the rice milling yield by measuring the weights of supplied brown rice and polished rice, respectively, when the rice is milled by a rice milling machine.

Conventional technology Conventionally, in order to measure the rice milling yield of a rice milling machine, one measuring device for brown rice was installed in the front process of the rice milling machine, and one measuring device for white rice was installed in the downstream process, and the rice was measured using the measuring device for brown rice. A certain amount of brown rice is polished using a rice milling machine,
This was done by discharging all of the milled rice into a milled rice measuring device, then weighing it with the milled rice weighing device, and comparing these measured values. However, such equipment cannot quickly send brown rice or white rice to the next process, and its processing capacity is low. Also, Special Publication No. 58-5098 and Special Publication No. 39-29151
There is also a measuring device that sends brown rice at a constant flow rate to a rice milling machine and installs a damper or adjustment tank in the post-process of the rice miller to perform continuous processing, but these devices do not require a damper or adjustment tank. In addition, there was a drawback that accurate measurements of polished rice could not be obtained at the discharge section from these dampers and adjustment tanks.

Purpose In view of the above points, the present invention is capable of accurately and continuously weighing polished rice directly discharged from a rice milling machine without requiring a damper or an adjustment tank, and efficiently measuring rice milling yield. A further object of the present invention is to provide a rice milling yield control device that ensures a preset rice milling yield.

Outline of Configuration The rice milling yield control device of the present invention is provided with a brown rice presence state detection device for detecting the presence or absence of brown rice between a brown rice measuring device and a rice milling machine having a polishing level adjustment device, and the rice milling In the post-process, a measuring device for polished rice is provided, which includes a plurality of hopper-type weighing machines, a supply path having a plurality of discharge ports communicating with each of the weighing machines, and a switching valve for switching the discharge ports. A measuring device for brown rice, the brown rice presence state detection device,
The milled rice measuring device is electrically connected to the milled rice measuring device through a control device having an arithmetic circuit, and the control device controls the measured values of brown rice and polished rice measured by the brown rice weighing device and the polished rice measuring device. The whiteness adjustment device is controlled by:

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings.

FIG. 1 shows an embodiment of the present invention, in which 1 is a grain lifting machine for supplying brown rice to the adjustment tank 3, and 2 is a grain lifting machine provided at the upper discharge part of the grain raising machine 1 for returning surplus rice. This is an overflow channel. An on-off valve 5 that is opened and closed by an air cylinder 4 is provided at the outlet of the adjustment tank 3.
A brown rice measuring device 6 is provided below the adjustment tank 3.

The brown rice weighing device 6 is formed by suspending a brown rice tank 9 with a bracket 7 fixed thereon so as to be vertically movable by means of a transverse rod 33 on which a load cell 8 is fixed at the upper part so that the bracket abuts on the load cell 8. An on-off valve 10 that is opened and closed by an air cylinder 11 is provided at the outlet of the brown rice tank 9.

Brown rice measuring device 6 and rice polishing machine 1 installed below it
A brown rice supply tank 12 is provided between the brown rice supply tank 12 and connected to the supply section 15 of the rice milling machine 14.
A photo sensor 13 is provided as a brown rice presence state detection device for detecting the presence or absence of brown rice, and a signal from the photo sensor 13 is used to measure the brown rice measuring device 6.
The air cylinder 11 is operated to open and close the on-off valve 10.

Reference numerals 16A and 16B refer to a polishing degree adjusting device that changes the resistance force of a resistive lid provided on the rice polishing machine 14, and 17 electrically connects to the air cylinder 4, brown rice measuring device 6, photo sensor 13, etc.; This is a control device that controls the

In the post-process of the rice milling machine 14, a grain frying machine 18 is used.
A measuring device 20 for polished rice is provided. Measuring device for white rice 2
0 is a first and second white rice measuring machine 34, 35,
There is a supply path 19 in which discharge ports 19A and 19B are branched and opened on the first and second polished rice measuring machines 34 and 35, respectively, and a supply path 19 is provided at a branch point of the supply path 19 so that one side is open and the other is opened. It consists of a switching valve 21 that is closed. The first and second white rice measuring machines 34 and 35 are
It is suspended vertically on a horizontal rod 36 via brackets 23, 25 and load cells 24, 26, and the load cells 24, 26 are electrically connected to the control device 17. In addition, an air cylinder 2 that operates the switching valve 21
Also connected to the control device 17 are air cylinders 27 and 30 that operate shutters 28 and 29 provided at the discharge ports of the second and first and second polished rice weighing machines 34 and 35. Note that 31 is a storage tank provided below the first and second white rice measuring machines, and 32 is a shutter thereof.

Next, the operation of the above embodiment will be described.

First, the tare weight of the brown rice tank 9 is measured by the load cell 8 of the brown rice weighing device 6, and the control device 17
Send that signal to and memorize it. next,
A preset weight value is entered into the control device 17 and stored separately, the on-off valve 5 of the adjustment tank 3 is opened, and brown rice is put into the brown rice measuring device 6. At this time, the on-off valve 10 of the brown rice tank 9 to the brown rice measuring device 6 is closed. Eventually, brown rice tank 9
When the amount of brown rice in the tank increases and the set value of the load cell 8 becomes close to the preset weight value, a signal is sent from the control device 17, the air cylinder 4 is operated, the on-off valve 5 is closed, and the brown rice is transferred to the brown rice tank 9. The addition of brown rice is stopped and a signal indicating the end of measurement is sent to the control device 17. At the same time, the measured value of the load cell 8 is sent to the control device 17.

At this time, the photo sensor 13 provided in the brown rice supply tank 12 detects that no brown rice is present, and sends a signal to the control device 17. Based on this signal and the measurement end signal of the brown rice measuring device 6, the air cylinder 11 installed in the brown rice tank 9 of the brown rice measuring device 6 is operated, the on-off valve 10 is opened, and the weighed brown rice is The brown rice is supplied to the brown rice supply tank 12.

When the brown rice has been discharged from the brown rice tank 9, the load cell 8 detects this and operates the air cylinder 11 based on the signal to close the on-off valve 10.
After a time difference of 2 to 3 seconds from this point, the on-off valve 5 of the adjustment tank 3 is opened and the brown rice stored in the adjustment tank is put into the brown rice tank 9.

When the photo sensor 13 detects the presence of brown rice, the rice polishing machine 14 is activated and starts polishing the rice. The milled rice is sent to a milled rice measuring device 20 via a grain lifting machine 18.

When the photo sensor 13 detects that there is no brown rice again, the brown rice tank opening/closing valve 10 of the brown rice measuring device 6 is opened after confirming the measurement end signal of the brown rice measuring device 6, and the brown rice is supplied. A signal is sent to tank 12 to supply brown rice.

The detection signal of the presence of brown rice from the photo sensor 13 is also transmitted to the white rice weighing device 20, and when the photo sensor 13 detects the presence of brown rice, the air cylinder 22 uses the signal to move the supply path 19 to the empty white rice weighing device. The switching valve 21 is operated so as to communicate with the user.
In the supply path 19, when the switching valve 21 opens the discharge port 19A that opens on the first white rice measuring device 34, white rice is charged into the first white rice measuring device 34, and the input amount increases, When the switching valve 21 is switched by the signal from the photo sensor 13 as described above, the weight of the polished rice is measured by the load cell 24, and the supply path 19 is connected to the second polished rice measuring device 35 by the operation of the switching valve 21. It communicates with the other discharge port 19B which is open to the other side, and the polished rice is subsequently fed into the second polished rice measuring machine 35.

Then, the weight value of the polished rice in the first weighing machine 34 is sent to the control device 17, and the value is stored. At the same time, the air cylinder 27 that opens and closes the discharge port of the first white rice weighing machine 34 is activated, and the shutter 28 is activated.
Open and drain the white rice. The operation of supplying and discharging to the first and second white rice measuring machines 34 and 35 is performed by the switching valve 2.
1 is operated and repeated alternately, and the polished rice sent from the rice milling machine 14 via the grain lifting machine 18 is continuously weighed.

The ratio of the white rice weight measured by the white rice measuring device 20 and the brown rice weight value measured by the brown rice measuring device 6 is calculated by the calculation device in the control device 17 at each interval when the photo sensor 13 operates intermittently. is,
Displayed on a printer, etc. as rice milling yield. In addition, the rice milling yield calculated by electrically connecting the milling degree adjusting devices 16A and 16B of the rice milling machine 14 to the control device 17 is
It compares whether it is higher or lower than the target yield that has been set as a target in advance and input into the control device 17, and based on the higher or lower value, the 14 milling rate adjustment devices 16A and 16B of the rice milling machine are controlled to set the target yield. The rice is controlled so that it is polished in a fixed manner.

FIG. 2 shows another embodiment of the present invention, in which a bracket 38 is provided in the brown rice supply tank 41 provided between the brown rice measuring device 6 and the rice polishing machine 14, and the brown rice is handled by a horizontal rod 40 on which a load cell 39 is fixed. supply tank 4
1 is suspended so as to be vertically movable, and a load cell 39 is electrically connected to the control device 17. In this embodiment, the load cell 39 functions as a brown rice presence state detection device 37 by detecting the weight of brown rice, and the brown rice is discharged from the brown rice weighing device 6 based on a signal from the load cell 39. Further, a time measuring device of the control device is provided, and the instantaneous flow rate is displayed based on the interval at which brown rice is discharged from the brown rice measuring device 6.

In addition, in response to the operation signal of the brown rice measuring device 6, from the time when the brown rice discharge signal is issued, the white rice measuring device 2
If an electric delay circuit is provided for the milled rice weighing device 20 so that the weighing signal from the milled rice weighing device 20 is output with a delay of the time required for the rice grain transportation process to reach zero, the yield can be measured using the same rice grain. It will be done.

Furthermore, if the control device 17 is provided with a memory circuit that integrates the weights of brown rice and polished rice multiple times, and an arithmetic circuit that calculates the weights into an average value, variations in yield in the rice milling machine 14 can be prevented. This prevents hunting during fineness adjustment.

As the brown rice presence state detection device, a device in which a blade wheel is attached to a motor and detects resistance to rotation of the blade wheel or a capacitance type level meter may be used.

Effects As described above, the present invention does not require a damper or an adjustment tank, and can directly measure the white rice discharged from a rice milling machine continuously using a milled rice measuring device. Compared to those that are temporarily stored in a tank, the measurement can be carried out quickly, smoothly and accurately, and the polishing level can be adjusted appropriately and automatically based on the measured value, ensuring a pre-set fine product yield. Is possible.

In addition to measuring the instantaneous yield, if you memorize the cumulative weight of brown rice and white rice from the time of starting operation,
The total weight and yield rate can be printed out at the same time as the operation ends, greatly improving accounting management at rice milling plants.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of one embodiment of the invention, and FIG. 2 is a schematic side view of another embodiment of the invention. 1,18...grain lifting machine, 3...adjustment tank, 4,
11, 22, 27, 30...Air cylinder, 5,
10...Opening/closing valve, 6...Measuring device for brown rice, 7,2
3, 25, 38...Bracket, 8, 24, 2
6,39...Load cell, 9...Brown rice tank, 1
2, 41... Brown rice supply tank, 13... Photo sensor, 14... Rice polishing machine, 16A, 16B... Polishing degree adjustment device, 17... Control device, 19... Supply path, 19A, 19B... Discharge port , 20...Measuring device for polished rice, 21...Switching valve, 28, 29, 32...
...Shaft, 33, 36, 40... Horizontal rod, 34...
...First polished rice measuring machine, 35... Second polished rice measuring machine, 37... Brown rice presence state detection device.

Claims (1)

[Claims] 1. A brown rice presence state detection device for detecting the presence or absence of brown rice is provided between a brown rice measuring device and a rice polishing machine having a polishing level adjustment device, and a plurality of brown rice presence state detection devices are provided in the post-process of the rice milling machine. a hopper-type weighing machine, and a supply path having a plurality of discharge ports communicating with each of the weighing machines;
A measuring device for polished rice comprising a switching valve for switching the discharge port is provided, and the measuring device for brown rice, the detecting device for detecting the presence of brown rice, and the measuring device for polished rice are electrically connected to each other via a control device having an arithmetic circuit. and the control device controls the polishing degree adjusting device based on the measured values of brown rice and polished rice measured by the brown rice measuring device and the polished rice measuring device. Yield control device. 2. The rice milling yield control device according to claim 1, wherein the brown rice presence state detection device is a photo sensor. 3. The rice milling yield control device according to claim 1, wherein the brown rice presence state detection device is a weight detection device. 4. The rice milling yield control device according to claim 1, wherein the brown rice presence state detection device is a capacitive level meter. 5. Claims 1 and 2, wherein the control device has a delay circuit that outputs a measuring signal to the polished rice measuring device after an arbitrary time delay with respect to the operating signal of the brown rice measuring device. , the rice milling yield control device according to item 3 or 4. 6. The control device has a memory circuit that integrates the measured values of the brown rice measuring device and the polished rice measuring device multiple times, and an arithmetic circuit that calculates the measured values into an average value. Rice milling yield control device according to scope 1, 2, 3, or 4.