JPS61204044A - Method and apparatus for automatically controlling moisture supply amount of humidifying rice refining machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a method for supplying moisture to a humidifying rice milling machine that adds moisture to standard white rice just before white skin or ordinary white rice supplied to a milling room and processes it into ultra-shiny white rice. This invention relates to a method and device for automatically controlling the amount.

Prior Art A water flow rate automatic adjustment device is interposed in the water supply pipe of a humidification device leading to a polishing room, which has a polishing trochanter mounted on a shaft in a porous-wall draft removal rice polishing cylinder, and a variable resistor of the automatic adjustment device and The water flow rate is automatically adjusted in accordance with the voltage difference between the two variable resistors by communicating with a variable resistor of a rice grain flow balance stabilizing automatic adjustment device provided in the rice grain supply process to the milling room through a comparison amplifier circuit. An automatic flow rate control device for a humidifying rice milling machine that opens and closes a flow rate regulating valve of the device is known as Japanese Patent Application Laid-open No. 127158/1983.

Problems to be Solved by the Invention The characteristics of the humidifying rice milling machine are that it adds an appropriate amount of moisture to the polished rice supplied to the milling room to moisten and soften the grain surface of the extremely thin layer of polished rice, and improves the polishing trochanter and porous wall ventilation. Each time only the i-layer on the surface of the polished rice grain is peeled off using a rice bran removing and polishing cylinder, the generated bran and moisture are removed through the porous wall by ventilation to the outside of the polishing chamber, and the surface of the polished rice grain is removed by the mutual polishing action of the polished rice grains, which exposes the hard surface. However, the amount of water added requires extremely precise precision, and if the water M is insufficient, it will be difficult to remove the aleurone layer stuck to the longitudinal grooves of the polished rice grains. This is extremely difficult, and when the moisture content is excessive, the moisture penetrates into the rice grains into a thick layer, and if this penetration layer exceeds the appropriate thickness limit even by a very small amount, significant cracks will immediately occur in the surface of the rice grains. Moreover, if the amount of water is excessive, the load in the milling chamber will increase rapidly, inducing an overload on the electric motor, and the milled rice will be crushed and solidified in the milling chamber, leading to an operation stoppage accident.

By the way, in the above-mentioned conventional device, the opening degree of the supply port of the rice miller is automatically controlled depending on the change in the storage condition of rice grains accumulated in the tank, and the opening degree of the water supply pipe of the humidifying device is automatically adjusted based on the control value. , which automatically adjusts the amount of rice grains and the amount of water in a correlated manner, but the appropriate amount of water to be supplied varies depending on the degree of polishing, moisture content, temperature, etc. of the rice grains supplied to the milling room. However, it was not possible to automatically adjust the moisture content to the optimum level for the various conditions of the rice grains supplied to the milling room, and it was not possible to reliably process high-level, ultra-shiny white rice.

In order to solve the above-mentioned problems, the present invention provides a method and apparatus for automatically controlling the amount of water supplied to optimize the processing of ultra-shiny polished rice without being restricted by the various conditions of rice grains supplied to a milling room. This is a technical issue.

Means for Solving the Problems The first invention of this application, which is a method for automatically controlling the amount of water supplied to a humidifying rice milling machine, is a method for automatically controlling the amount of water supplied to a humidifying rice milling machine. Rice grains are supplied into a room, moisture is added to the flowing rice grains, the minimum load value of the motor that changes depending on the amount of moisture supplied is detected, and the moisture is added so that the load becomes higher by an arbitrary value than the minimum load value. It is characterized by automatically controlling the supply amount to increase or decrease.

In addition, the second invention of this application, an automatic moisture supply amount control device for a humidifying rice milling machine, is capable of controlling the amount of moisture supplied to a polishing chamber formed by mounting a polishing trochanter on a shaft inside a porous-walled rice polishing cylinder for removing rice bran. In a humidifying rice milling machine connected to a moisture supply device equipped with a regulator,
A setting device for setting a high load by an arbitrary value and a storage device are connected to an arithmetic circuit so as to increase or decrease the amount of water added to the rice grains depending on the load level of the electric motor that rotationally drives the milling trochanter. An automatic water supply amount control device for a humidified rice mill, characterized in that a control device is provided, and a load detector for detecting the load of the electric motor is connected to the water supply amount regulator via the control device.

Function In a humidifying rice milling machine, milled rice just before standard whitening or regular white rice is supplied to the milling chamber, water is added to the milled rice flowing in the milling chamber, and the amount of water supplied is gradually increased. While the grain surface gloss of the polished rice flowing out of the chamber gradually increases, the load on the motor gradually decreases in inverse proportion to the increase in water supply, and continues from the time when the motor load reaches its lowest value. When the amount of water supplied is increased, the load on the motor increases rapidly from the lowest point. At a moisture supply rate that is slightly higher than the base point where the motor load is at its lowest value, the polished rice flowing out of the milling room can be processed to the highest gloss level, and if this optimum moisture supply rate is exceeded, the gloss level will decrease. As it decreases, the softening of the polished rice becomes excessive, and the flow frictional resistance of the rice grains increases rapidly, making the load on the electric motor unstable.

Based on the above example, the present invention gradually increases the amount of water added to the rice grains supplied to the milling room, detects the base point where the motor load is the lowest value, and arbitrarily increases the amount of water added to the rice grains supplied to the milling room. By automatically controlling the moisture supply amount regulator of the moisture supply device so that the load is high by a predetermined setting value, the moisture supply is optimal for processing ultra-shiny white rice without being affected by the conditions of the rice grains being supplied. The amount can be automatically adjusted.

Embodiment An embodiment of the present invention will be explained based on FIGS. 1 and 2. A polishing cylinder 2 for removing bran with a porous wall is hung horizontally inside the machine frame 1, and a polishing trochanter 4 with a spiral rotor 3 connected inside the polishing cylinder 2 is hung on a main shaft pipe 5 to form a polishing chamber 6. Form. The supply lower connected to the milling room 6 is equipped with a rice grain detector 8 for detecting the presence or absence of rice grains, and an opening/closing device 9 consisting of an on-off valve and an operating mechanism for opening or connecting the supply lower. A supply hopper 10 is connected to the upper part of the hopper.

A large number of hot water supply holes 11 drilled in the main shaft pipe 5 communicate with the heating groove holes 12 of the milling trochanter 4, and a two-fluid ultrasonic nozzle 14 is provided on one side end 13 of the main shaft pipe 5. The water supply pipe 15 side of 14 is connected to a water tank 17 via an electromagnetic pump 16 having a water supply amount regulator, and the air supply pipe 18 side is connected to an air compressor 19. A moisture supply device 20 is formed by the air supply pipe stroke.

A shielding board 21 is fitted into the main shaft pipe 5 at approximately the middle part to divide the main shaft pipe 5 into a hot water supply pipe 22 and an air intake pipe 23. The section is a humidified whitening chamber 24 connected to the moisture supply device 20, and the latter half from the middle stage of the whitening chamber 6 to the rice discharging section 26 is a ventilation milling chamber 25 forming a humidifying milling process. Air intake hole 27 provided in the pipe 5. Ventilation groove hole 12 of refined trochanter 4. The terminal portions of the bran collecting troughs 28 that communicate with the porous-walled bran removal and polishing tubes 2 and surround the milling chamber 6 are connected to the intake side of the exhaust fan 29, and the wind flowing from the intake pipes 23 is sent to the exhaust fan 29. It is designed to be sucked in and discharged to a rice bran collecting device (not shown) such as a cyclone installed outside the machine. It is equipped with a load adjustment device 3o that adjusts the load.

The electric motor 31 is connected to a helical rotor 3 through a driving belt 32. A main shaft tube 5 on which a refined trochanter 4 is mounted is connected so as to be rotationally driven. 33 is a rice grain flow rate measuring device installed in the supply hopper 10, and is formed by connecting a flow rate detection plate 34A installed in the supply hopper 10 in relation to a detector 34B.

35 is a raw rice temperature sensor, and 36 is a finished rice temperature sensor provided in the rice discharging section. Said rice grain detector8. Supply lower opening/closing device9. Rice grain flow rate measuring device 33. Each of the raw rice temperature sensor 3 and the finished rice temperature sensor 36 is connected to a control device 39 by a lead wire 384 connected to a terminal block of an electromagnetic switch 37 that controls the operation of the electric motor 31. The control device 39 includes a drive start push button 40 for starting and stopping the electric motor 31. In addition to the operation stop push button 41, there are also a raw rice temperature indicator 42° and a finished rice temperature indicator 43. Rice grain flow rate indicator 44° Moisture supply amount indicator 45. Load indicator 46.
Push button for automatic operation 479 Push button for manual operation 48. High load setting value correction button 49. It is equipped with a low load setting value correction button 50, a load correction value display 511, and the like.

Note that a device such as a nebulizer may be substituted for the moisture supply device.

Next, the configuration of the control device 39 will be explained based on FIG. 3.

An electromagnetic switch 37 is interposed in the circuit connecting the power terminal R-8-T and the electric motor 31, and an electromagnetic coil MC of the electromagnetic switch 37 and a push button 40 for starting operation are installed between the terminal R-8.
．． The push button 41 for operation and stop is connected in series, and the terminal T
A load detector 52 is interposed in relation to the circuit of the load detector 52, and the load indicator 46 is connected to the load detector 52, and its output side is connected to the particle size regulator 53. Arithmetic circuit 55 via A/D converter 54
It is connected to. A memory circuit 56 and a load setting device 57 are connected to the arithmetic circuit 55, and the output side of the arithmetic circuit 55 is connected via a drive circuit 58 to an electromagnetic pump 16 having a water supply amount regulator. . In addition, a raw rice temperature indicator 42 is connected to the raw rice temperature sensor 35, and its output side is connected to an arithmetic circuit 55 via an A/D converter 59.
A rice grain flow rate indicator 44 is connected to the rice grain flow rate measuring device 33, and its output side is connected to an arithmetic circuit 55 via an A/D converter 60. The rice grain detector 8 is connected to an arithmetic circuit 55 via an A/D converter 61, and the opening/closing device 9 is connected to the output side of the arithmetic circuit 55 via a drive circuit. 'Next, the operation of the above structure will be explained with reference to FIGS. 1 to 3. Start electric ViA31 and supply hopper 1
0 is supplied with white rice just before standard white peel or regular white rice, and the opening/closing device 9 is operated to open the supply lower and the humidifying white rice chamber 24 is opened.
The moisture supply pipe 22. Humidity hole 11. Moisture is supplied from the moisture supply device 20 through the heating groove 12 of the milling trochanter 4 to moisten and soften the surface of the polished rice grains, and immediately the thin layer of polished rice is peeled off by the stirring action of the milling trochanter 4 and peeled. Moisture is sucked together with the rice bran from the porous wall rice bran removal polisher v2 and removed by the exhaust fan 29, and a thin layer of polished rice is peeled off by the stirring action of the polishing trochanter 4, and the surface of the polished rice grains is pretreated to have a smooth surface. , heat sent to the ventilation milling room 25 by the transport action of the spiral trochanter 3;
The moistened polished rice is polished by the polishing action of the polishing trochanter 4 and the exhaust air tR2.
9 through the intake pipe 23° and the intake passage 24. By the drying action of aerating the polished rice layer through the ventilation slots 12 of the milling trochanter 4, the grain surface of the polished rice is processed into smooth and glossy rice, which is then discharged from the rice discharging section 26 to the outside of the machine.

Next, the state of automatic moisture supply amount control according to the present invention during the above-mentioned humidification process will be explained with reference to FIGS. 3 and 4. When the amount of water supplied from the water supply device 20 is gradually increased, the load on the motor 31 gradually decreases, and the load rapidly increases from point A, which is the lowest load value. A load detector 52 detects the load on the motor 31, which changes as the amount of water supplied increases, and the detected value is sent to a rectifier 53. A/
The load value is communicated to the arithmetic circuit 55 via the D converter 54, and also to the storage circuit 56. A setting device 57 provided with setting values (8 points) that increase the load by an arbitrary value with respect to the lowest load value (point A) inputted to the memory circuit 56.
The electromagnetic pump 1 is activated by the output signal of the arithmetic circuit 55 until the signal of
6 to gradually increase the water supply amount, and when the signals from the setting device 57 and the load detector 52 become the same, the rice can be processed to the highest glossiness.At this point, the water supply amount adjustment of the electromagnetic pump 16 is controlled. is stopped, and the optimum amount of water is constantly supplied to the rice grains flowing in the humidifying whitening chamber 24.

During the above operation, the load detection value of the load detector 52 may vary. The load fluctuations are mainly due to changes in the raw rice supply flow rate, changes in the polishing degree of the raw rice, changes in the raw rice temperature, changes in the control of the load adjustment device 30, etc.
When the load value detected by the load detector 52 fluctuates, the electromagnetic pump 16 is controlled by a signal from the arithmetic circuit 55 to gradually reduce the amount of water supplied, and the fluctuating load value is input to the storage circuit 56, and the lowest Detect load value. At this time, if the minimum load value fluctuates to 0 point, the electromagnetic pump 16 will continue to operate until the load value reaches the same load value as the signal from the setting device 57 so that the load becomes higher by an arbitrary value from this 0 point as a base point. Gradually increase the amount of water supplied from In addition, the rice temperature detected by the raw rice humidity sensor 35 is sent to the arithmetic circuit 55 via the A/D converter 59.
The setting device 57 is corrected by a correction value that corrects the load setting value for each difference in rice temperature that is input into the storage circuit 56 in advance.
The signal is corrected by the arithmetic circuit 55, and the electromagnetic pump 16 is controlled by the output signal of the arithmetic circuit 55. Similarly, a correction value for correcting the load setting value depending on the difference in the supply flow rate of raw rice is input into the memory circuit 56 in advance, and the detection signal of the rice grain flow rate measuring device 33 is sent to the calculation circuit via the A/D converter 60. 55, and in response to the load setting correction value of the memory circuit 56 in response to the detection signal, the arithmetic circuit 55 controls the water supply amount of the electromagnetic pump 16, and automatically controls the water supply amount to the optimum amount for processing ultra-glossy white rice. It is something that

Furthermore, when the rice grain detector 8 detects that the supply of rice grains has run out, the detection signal is communicated to the arithmetic circuit 55 via the A/D converter 61, and the output signal from the arithmetic circuit 55 activates the electromagnetic pump 16. At the same time, the opening/closing device 9 is operated to close the supply lower. Then, the rice grain detector 8 operates the switch @ 9 and the electromagnetic pump via the arithmetic circuit 55 based on the signal that detects the supply of rice grains.
The rice grains are supplied to the whitening room 6, and moisture is supplied to the rice grains to continue processing the ultra-shiny white rice.

Although the relationship between the amount of water supplied and the current value has been explained with reference to Fig. 4, what is shown in Fig. 4 is an experimental example for a specific rice grain supply flow, and is not applicable to a humidifying rice milling machine. The current value or water supply amount, and the minimum load value A, depending on the capacity.

The 0 point and the set values B and D points naturally vary.

Effects of the Invention As explained above, according to the method for automatically controlling the water supply amount of the present invention, the water supply amount is controlled to increase the load by an arbitrary value from the lowest load value. Even if there are changes in the conditions of the supplied rice grains, the amount of water supplied is automatically adjusted to the optimum level for processing ultra-shiny white rice, and has the remarkable effect of reliably processing ultra-shiny white rice.

Further, according to the automatic moisture supply amount control device of the present invention, the moisture supply device is automatically controlled by the output signal of the arithmetic circuit that communicates the detection signal of the load detector, and the moisture supply amount is optimized for ultra-glossy polished rice processing. It automatically adjusts the water supply amount and has the remarkable effect of being able to reliably process super glossy white rice without having to worry about the conditions of the rice grains being supplied.

[Brief explanation of drawings]

Fig. 1 is a side sectional view showing one embodiment of the present invention, Fig. 2 is a front view showing the main parts, Fig. 3 is a field diagram of the control device, and Fig. 4
The figure is an explanatory diagram showing the operation of the present invention. 1... Machine frame 2... Porous wall polishing cylinder for bran removal 3... Spiral trochanter 4... Refining trochanter 5...
Main shaft pipe 6... Refining chamber 7... Supply port
8...Rice grain detector 9...Switching device
10... Supply hopper 11... Hot water supply hole 1
2...Hot water supply slot 13...-side terminal 14...
Two-fluid ultrasonic nozzle 15... Water supply pipe 16.
...Electromagnetic pump 17...Water wet 18...
Air supply pipe 19...Air compressor 20...Moisture supply device 21...Block panel 22...Hot water supply pipe 23
...Air suction pipe 24...Humidified whitening room 25...
・Ventilated whitening room 26... Rice removal section 27... Air intake hole 28... Bran collecting gutter 29... Ventilation fan
30...Load adjustment device 31...Electric motor
32... Drive belt 33... Rice grain flow rate measuring device 34A... Flow rate detection plate 34B... Detector 3
5... Raw rice temperature sensor 36... Finished rice temperature sensor 37... Electromagnetic switch 38... Three lead wires.
...Control device 40...Push button 41 for starting operation
...Push button for stopping operation 42...Raw material rice temperature indicator
143... Finished rice temperature indicator 44... Rice grain flow rate indicator 45... Moisture supply amount indicator 46... Load indicator 47... Push button for automatic operation 48... Push button for manual operation 49 ... High load setting value correction button 50 ... Low load setting value correction button 51 ... Load correction value display 52 ... Load detector 5
3... Rectifier 54... A/D converter 55... Arithmetic circuit 56... Memory circuit 57.
...Load setting device 58...Drive circuit 59...A
/D converter 60...A/D converter

Claims (5)

[Claims] (1) Detects the minimum load value of the electric motor, which increases or decreases depending on the amount of water added to flowing rice grains in the milling chamber, which is formed by mounting a milling trochanter on a shaft inside a porous-walled milling cylinder for removing rice bran. A method for automatically controlling the amount of water supplied to a humidifying rice mill, characterized in that the amount of water supplied is automatically adjusted to increase or decrease so that the load is increased by an arbitrary value with respect to the minimum load value. (2) The automatic water supply amount control method for a humidifying rice milling machine according to claim (1), wherein the arbitrary value is corrected and changed depending on the rice grain supply flow rate and temperature conditions. (3) In a humidifying rice milling machine in which a moisture supply device equipped with a moisture supply amount regulator is connected to a polishing chamber formed by shaft-mounting a polishing trochanter inside a polishing cylinder for removing rice grains with a porous wall, The control device includes a setting device that sets a high load by an arbitrary value and a storage device connected to an arithmetic circuit so as to increase or decrease the amount of water added to the rice grains depending on the load on the electric motor that rotates the rice grains. An automatic water supply amount control device for a humidifying rice mill, characterized in that a load detector for detecting the load of the electric motor and the water supply amount regulator are connected to each other through the control device. (4) A rice grain flow rate measuring device for measuring the rice grain flow rate is provided in a pre-process of the whitening room, and the rice grain flow rate measuring device is connected to the arithmetic circuit so as to correct the load setting value based on the measured value of the rice grain flow rate measuring device. Claim No. (3) connected to
An automatic moisture supply amount control device for a humidifying rice milling machine as described in Section 1. (5) A temperature detection sensor for raw rice provided in the preceding stage of the whitening room is connected to the arithmetic circuit so that the load setting value is corrected depending on the temperature of the rice grains supplied to the whitening room. ) or (4), an automatic water supply amount control device for a humidifying rice milling machine.