JPH01148351A - Rice-cleaning method and apparatus - Google Patents

Abstract

PURPOSE: To pearl unpolished rice, which is not uniform in quality, under optimum conditions by detecting three elements; an electric current, temp. difference and whiteness difference, with respective sensors and controlling a pearling pressure, the number of revolutions of rolls and pearling flow rate. CONSTITUTION: Operation is started in the state of previously regulating a weight pressure controller 41, speed controller 42 and flow rate controller 43 according to pearling conditions and the rice is supplied to a rice pearling machine 1. After recycling is executed until the pearling stablilized, the electric current quantity, the rising temp. difference of the rice and the whiteness difference are detected by the current sensor 3, the temp. sensors 32a, 32b and the whiteness sensors 33a, 33b. If the values thereof are within the optimum pearling condition range, the pearling is executed without the correction of the respective controllers 41 to 43. If, on the other hand, there is excess or shortage in any thereof, the respective controllers 41 to 43 are regulated and controlled respectively in order of the weight pressure, the speed and the flow rate. when, the temp. rise is excessive, and in order of the speed, the weight pressure and the flow rate when the pearling accuracy and the whiteness increases are too small.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a rice milling method used in each rice milling machine in a series of rice milling machines, and an object of the present invention is to mill brown rice of varying quality under optimal conditions.

Brown rice, which is a conventional agricultural product, has five varieties, and its quality varies due to differences in production area, harvest adjustment, etc. On the other hand, white rice, a product, has delicate taste requirements, and the setting of milling conditions relies on intuition gained from long experience. It was inevitable.

The conventional setting of milling conditions is based on the milling state of rice during the milling process,
Conditions such as whiteness, temperature, and crushed grains are determined using the five senses, and the milling pressure (weight pressure) and milling mass flow rate are controlled by intuition.In terms of the structure of the rice milling machine and rice milling technology, there are no control means other than the milling pressure and flow rate. It was something that was missing.

Problems to be Solved by the Invention In the conventional method, there was a lack of reproducibility and criteria for determining whether the milling conditions were optimal for milling rice of various qualities, and it was uncertain.

Means to solve problems This invention captures the state of ejaculation as numerical information.

The problem was solved by controlling rice milling under optimal conditions based on this information.Specific measures include the power consumption of the rice milling machine, the amount of current, and the temperature difference and whiteness difference before and after the rice milling process. In addition to accurately grasping the milling state by detecting three factors and controlling the milling mass pressure and milling mass amount, we have newly added the rotation speed control of the milling roll as a new control method not found in conventional rice milling technology. , three-way control is used, the control area is expanded to quickly implement accurate control, and the control result is adjusted to the three-way control described above.
The problem is solved by making a detection judgment based on the source, re-correcting it if necessary, and always selecting the best and most accurate condition.

The amount of electricity used by the rice milling machine decreases in efficiency, power factor, etc., but the electrical energy input becomes the rotational force of the motor and mechanical energy, which is used as the frictional force of the milling process and becomes 3-C laminar friction heat, which generates heat. It is converted into energy and a portion is discharged from the rice mill.

The progress of milling can be determined by the color of the pale brown bran layer removed during the milling process, the whiteness increases depending on the amount of bran layer removed, and the change in whitening can determine the state of milling.

Although these factors are not uniform depending on the progress of the milling process, the load power energy is determined by the amount of electricity used by the rice milling machine, and the energy consumed by the frictional force that moves can be estimated by the rising temperature of the rice. As a result of the frictional force, the state of the pounded spirit can be determined.

This invention focuses on the ability to dynamically grasp the polishing process through these events, and uses a current sensor to monitor the power consumption (
To be more precise, the voltage, efficiency, power factor, etc. variable element correction values) were attached to the rice inlet and grain outlet of the rice mill. The temperature sensor detects the temperature difference and temperature rise of the rice, and the whiteness meter detects the rising whiteness and whiteness change of the rice. Based on these three sources of information, the milling status of the continuous process can be immediately adjusted to the process. It is designed so that it can be determined accurately as a numerical value.

In addition, based on the judgment of the milling state (as a process control means for adjustment,
The milling process length has the same effect as the milling pressure and increases the rotation speed of the milling roll.

Based on these new findings, which have a similar effect to prolonging the polishing process, we introduced a new method to adjust the polishing process length by controlling the rotation speed of the polishing roll as a control means. Control of the amount of pumped semen and control of the number of rotations of the pumping roll, enabling three-way control.

This significantly expands the control range and enables reasonable and accurate control.

The polishing process is carried out in a continuous process.

It is desirable to avoid controlling the flow rate of one machine as much as possible because it affects the processes before and after, requires control of all the rice mills in a row, and complicates the control conditions.

In this invention, in addition to expanding the control range by adding a new rotation speed control of the scooping coolant, the control range is further expanded by using a rice milling machine with sufficient capacity for the milling process, making it possible to apply flow rate control. It is possible to avoid this.

The results of the control are immediately detected as numerical values of current, temperature difference, and whiteness difference, and if necessary, the control can be corrected again to ensure accurate and optimal milling at all times.

Example The present invention will be explained in detail with reference to process diagrams in the drawings.

The rice that has been fried in the elevator 53 is fed to the rice mill 10 and grain inlet 11 after passing through the 77 and 77 stages.

A flow rate controller 4, a 1 degree sensor 32a, and a white discoloration sensor 33a are provided in the bypass flow path.

The rice milling machine 1 has a motor 1 whose speed is arbitrarily changed by a speed controller C consisting of an inverter whose rotational force is transmitted through a pulley 12.
A sensor 32b and a weight pressure controller 41 for controlling the milling pressure of the rice milling machine are installed at the grain discharging port 14, and while the milled rice is flowing down to the elevator 5b for transferring to the next process, Whitening sensor with constant flow bypass flow path
33b Y is provided.

The control panel 2 controls the weight pressure of the rice milling machine, the inverter control of the motor, the amount of milled essence, and other related machines as a whole, and is equipped with a current sensor 31.

Depending on the pumping conditions, the weight pressure controller 41. Speed controller 42. Start operation with the flow rate controller 43 adjusted,
Supply rice to rice milling machine 1.

After recycling until the spirit is stabilized, the current seven
1. The temperature sensors 32a, 32b and the whitening sensors 33a, 33b detect the amount of current, the difference in temperature rise of rice, and the difference in whiteness, and if these are within a predetermined range predetermined as the optimum milling conditions, each Controller 41, 42゜43
＆'f;, Uncensored semen.

For example, if the number is too much or too little and is out of range.

If the temperature rises excessively, use the 6th weight - J control 41. Speed controller 4
2. Adjustment 11ii is performed according to the order of the flow rate control type core, and when the pounding accuracy is insufficient or white discoloration rises too much, the speed controller 42, the steel dividing controller 41. The flow rate controller 430 performs adjustment control.

Flow rate control has an influence on the processes before and after the combination, so it is desirable to avoid using it as much as possible.

If you use a rice mill with a structure of the polishing roll and bran removing cylinder that has a large capacity for the polishing process, the effect of controlling the rotation speed of the polishing roll will be further increased, the control range will be expanded, and the application of flow rate control will be avoided. becomes easier.

Optimal milling conditions vary depending on the required quality of white rice, quality of brown rice, etc., but by recording detection values and control values and accumulating data, it is possible to easily improve and apply the best milling conditions. Become.

Effects This invention accurately detects the milling process, which had to rely on human experience and intuition due to the wide variety of required qualities for brown rice and polished rice, using a value of 53 yuan.

The control area has been expanded, five-dimensional control has been implemented, the results have been detected immediately, and the necessary adjustments have been made to ensure that the operation is always under the optimum conditions.Individual differences, unevenness, and inadequacy of manual adjustment are avoided. It was possible to completely eliminate the problem.

In addition, the conventional adjustment based on human intuition had poor reproducibility and no criteria for determining whether the polishing conditions were the best, making it ambiguous. This makes it possible to accumulate data recording control values and to constantly improve and apply optimal milling conditions.

[Brief explanation of the drawing]

The drawings show a process diagram of the invention. 1... Rice mill, 11... Murder 0.13... Motor 14... Grain ejector, 2... Control panel, 31... Current sensor 32... Temperature sensor. 33... White discoloration sensor, 41... Weight pressure controller, 42... Speed controller. 43...Flow rate controller. 5... Rubator

Claims (5)

[Claims] (1) Each sensor detects three factors: the amount of electricity used by the rice mill, the temperature difference before and after milling, and the difference in whiteness before and after milling, and determines the milling state. A rice polishing method characterized by controlling three factors: the rotation speed of the rolls of a rice mill and the amount of milled rice. (2) Attach temperature and whiteness sensors to both the grain feeding and grain openings of the rice milling machine, or at similar positions where measurements can be taken, and control the temperature and whiteness differences by detecting them. A rice polishing method according to claim 1, characterized in that: (3) Among the three factors that control the milling conditions of the rice milling machine, both the milling pressure and the rotation speed of the rolls of the rice milling machine are controlled with priority over the milling quantity. Or the rice polishing method described in Section 2. (4) Claim 1, which is characterized in that the control range is expanded by using a rice milling machine with sufficient milling process capacity.
The rice polishing method described in 2, 3, or 4. (5) The rice milling machine is equipped with sensors that detect three factors: the amount of electricity used, the temperature difference before and after the rice is milled, and the whiteness difference before and after the milling, the weight pressure controller, and the rotation speed of the rolls. 3 motor rotation speed controller and pumping semen flow rate controller
Rice milling equipment characterized by having the original controller.