JPH058061B2 - - Google Patents

Description

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

Prior art: An automatic water flow rate adjustment device is installed in the water supply pipe of a humidifier that leads to a milling room, which has a milling trochanter mounted on a milling tube for removing rice bran with a porous wall, and a variable resistor and a variable resistor of the automatic regulating device are installed. A variable resistor of a rice grain flow balance stabilizing automatic adjustment device provided in the process of supplying rice grains to the milling room is connected via a comparison amplifier, and the water flow rate automatic adjustment device is controlled in accordance with the voltage difference between the two variable resistors. An automatic flow rate control device for a humidifying rice milling machine that opens and closes a flow rate control valve 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, moisturizes and softens the extremely thin grain surface of the polished rice, and removes the milling trochanters and porous walls. Each time only a thin layer of the surface of the polished rice grains is peeled off using a draft remover and polishing cylinder, the generated bran and moisture are removed from the milling chamber through the porous walls by the ventilation, and the hard surfaces are exposed to the mutual polishing action of the polished rice grains. As a result, the surface of the white rice grain is finished into a beautiful, ultra-shiny rice, but the amount of water added requires extremely precise precision. It is very difficult to remove, and when the moisture content is excessive, the moisture penetrates into the rice grain into a thick layer, and if this penetration layer exceeds the appropriate thickness limit even if it is very small, it immediately causes significant damage to the surface of the rice grain. If cracks occur and the amount of water is excessive, the load in the milling room will increase rapidly, causing an overload on the motor, and the milled rice will be crushed and solidified in the milling room, leading to an operation stoppage. be.

By the way, in the above-mentioned conventional device, the opening degree of the supply port of the rice milling machine is automatically controlled according to the change in the amount of rice grains stored 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.
The appropriate amount of water to be supplied varies depending on the degree of polishing, moisture content, temperature, grain size, etc. of the rice grains supplied to the milling room. However, it was not possible to automatically control the moisture content to the optimum level, making it impossible to reliably process high-level, ultra-glossy 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 method for controlling the amount of water added to a humidifying rice milling machine, which is the first invention of this application, uses a milling chamber formed by axially mounting a milling trochanter inside a porous-walled rice polishing cylinder for removing rice bran. The method is characterized in that water is added to flowing rice grains, the volumetric weight of the rice grains flowing out from the whitening chamber is measured, and the amount of water added is controlled to increase or decrease so that the measured value becomes the largest volumetric weight.

In addition, the moisture addition amount control device for a humidifying rice milling machine, which is the second invention of this application, includes a moisture addition device installed in a polishing chamber formed by mounting a polishing trochanter on a shaft inside a porous-walled rice polishing cylinder for removing rice bran. In the humidifying rice milling machines connected to each other, water is added to the rice grains flowing in the milling chamber, and a volumetric weight measuring device is installed during the flow process of the rice grains to measure the volumetric weight of the rice grains flowing out from the milling chamber. The water addition amount regulator installed in the water addition device and the volumetric weight measuring device are connected via a control device so that the volumetric weight has the largest value.

Effect When water is added to the white rice just before standard whiteness or normal white rice supplied to the milling room, the surface of the white rice grain becomes moist and soft, and at the same time, the thin layer of white rice is peeled off by the stirring action of the milling trochanter. Moisture is discharged together with the rice bran from the porous-walled rice polishing chamber for removing the rice bran, and the rice grains flowing inside the milling chamber are directed toward the rice removal section, where the thin layer of polished rice is peeled off by the stirring action of the polishing trochanter to create a smooth surface. At the same time, the polished rice grain surface is processed into smooth and glossy rice due to the frictional hardening effect between the rice grains, and the glossy white rice that flows out of the milling room has a larger dimensional weight than the raw white rice supplied to the milling room. The higher the volumetric weight, the higher the glossiness. Therefore, the volumetric weight of the polished rice flowing out of the milling room is measured, and the volumetric weight of the polished rice flowing through the milling room is adjusted so that the volumetric weight is greater than the volumetric weight measured last time. By controlling the amount of water added to the rice grains, it is possible to produce ultra-shiny white rice regardless of the conditions (milling degree, moisture content, temperature, grain size, etc.) of raw rice supplied to the milling room. The amount of water added is controlled to be optimal for processing.

Embodiment An embodiment of the present invention will be described based on FIGS. 1 to 3. 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. A rice grain detector 8 is installed at the supply port 7, which is a supply unit connected to the whitening room 6, to detect the presence or absence of rice grains.
An opening/closing device 9 consisting of an on-off valve and an operating mechanism for opening or closing the supply port 7 is installed, and a supply hopper 10 is connected to the upper part of the supply port 7.

A large number of moisture supply holes 11 bored in the main shaft pipe 5 communicate with the humidity supply grooves 12 of the refined trochanter, and one end 1 of the main shaft pipe 5
3 is provided with a two-fluid ultrasonic nozzle 14, and the water supply pipe 15 side of the ultrasonic nozzle 14 is connected to a water tank 17 via a water addition amount regulator 16, and the water supply pipe 1
The 8 side is connected to an air compressor 19, and a water addition device 20 is formed by these water supply pipes and air supply pipes.

A shielding board 21 is inserted into the main shaft pipe 5 at approximately the middle part to divide the main shaft pipe 5 into a moisture supply pipe 22 and an air suction pipe 23. A humidified whitening room 2 in which a part is connected to a water addition device 20
4, and the latter half of the process from the intermediate stage of the whitening chamber 6 to the rice discharging section 26 forms a humidifying whitening process as a ventilation whitening chamber 25. The terminal part of the bran collecting trough 28 which communicates with the ventilation slot 12 of the child 4 and the porous wall polishing cylinder 2 and which surrounds the polishing chamber 6 is connected to the intake side of the exhaust fan 29, and from the suction pipe 23 Exhaust fan 2 sucks the wind
9 and discharged to a bran collection device (not shown) such as a cyclone provided outside the machine. The rice discharging section 26 includes a load adjustment device 30 that adjusts the pressure level of grain-to-grain friction between rice grains in the whitening chamber 6.
It is equipped with.

A raw rice temperature detector 31 and a finished rice temperature detector 32 are provided in the supply hopper 10 and the rice discharging section 26, and the rice grain detector 8, opening/closing device 9, water addition amount regulator 16, etc. are provided in the control device 33. We are in contact with each other. Bottom wall 34 of the discharge gutter 34 installed in the rice discharging section 26
A is opened, an opening/closing valve 35 is pivotally attached to the opening 34B, a gear 36A is pivotally attached to the shaft 35A, and the gear 36A is engaged with a gear 36 that is pivoted to a small electric motor 39 that rotates in forward and reverse directions. It is fixedly attached to the machine frame 1. A rice grain flow gutter 40 is provided connected to the lower part of the discharge gutter 34, and the flow path communicating with the opening 34B partitioned by the partition wall 41 is connected to the bypass flow path 40.
A, and the lower part of the downflow gutter 40 is connected to the supply section 51 of the grain lifting machine 50. An on-off valve 43 is installed as a shaft at the bottom of a rice grain storage tank 42 whose upper part is open in an inclined manner, a gear 45 is attached to a fulcrum shaft 44 of the on-off valve 43, and a forward/reverse rotating electric motor is fixed to the side wall of the storage tank 42. A gear 47 is pivotally attached to the load cell 46, the gears 45 and 46 are meshed with each other, and one end of the load cell 48 is fixed to the storage tank 42, and the other end of the load cell 48 is installed horizontally inside the discharge gutter 34. A volume weight measuring device 49 fixed to the partition wall 41 and formed according to the above structure is installed in the rice grain flow down trough 40.

A two-way switching valve 5 is installed at the rice grain discharge port 52 of the grain lifting machine 50 that transports the glossy rice flowing out from the milling chamber 6 to the next process.
3 is installed, one side is used as a communication channel 56 for supplying rice grains to the next process, and the other side is a circulation channel 5 for returning polished rice that does not reach the standard volume weight to the supply section of the milling room 6.
It is listed as 5. Reference numeral 54 denotes a switching valve actuation mechanism made of an air cylinder or the like that connects the switching valve 53 with either the flow path 55 or the flow path 56. The electric motors 46 are each connected to a control device 33. Note that the volumetric weight measuring device 49 is connected to a bypass flow path from the discharge port 52 of the grain lifting machine 50 to the supply section 51, and is installed in the flow path;
Alternatively, the objects and effects of the present invention can be satisfied even if a flow tube is connected to the communication channel 56 and the supply section 51 and installed in the flow tube.

Next, the configuration of the control device shown in FIG. 4 will be explained. The output sides of the load cells 48 of the rice grain detector 8 and volumetric weight measuring device 49 are connected to a control circuit 60. 5
7 is a standard volumetric weight setting device, and for example, 870 is the standard volumetric weight to independently evaluate as super glossy white rice.
g/ is input into the setting device 57. Reference numeral 58 denotes a standard water addition amount setting device, into which the control value of the water addition amount adjuster 16 is input, which is the amount of water addition necessary for the volumetric weight of 870 g/, which has been determined in advance from experimental values, and the setting device 57 , 58 are each connected to a control circuit 60. Furthermore, the control circuit 60 includes
A timer 59 into which the measurement interval time of the volumetric weight measuring device 49 is input, a storage circuit 61 that stores the volumetric weight measured by the volumetric weight measuring device 49, and a volumetric weight stored in the volumetric weight measuring device 49 and the volumetric weight stored in the storage circuit 49. A comparison circuit 62 for comparing and outputting the data is connected to each other. On the output side of the control circuit 60, drive circuits 63, 64, 65,
66, the water addition amount adjustment device 9 is connected to the output side of the drive circuit 63, the water addition amount adjustment device 16 is connected to the output side of the drive circuit 64, and the switching valve operating mechanism 54 is connected to the output side of the drive circuit 65. The control device 33 is formed by branching the output side of the drive circuit 66 into two, and connecting one side to the small electric motor 39 and the other side to the forward/reverse rotating electric motor 46 via a timer 67.

Below, the effects of the above configuration are shown in Figures 1 to 4.
This will be explained using figures. The supply hopper 10 is supplied with polished rice just before standard whiteness or ordinary polished rice, the opening/closing device 9 is operated to open the supply port 7, and the rice grains supplied to the humidified whitening chamber 24 are connected to the moisture supply pipe 22 and the moisture supply hole 1.
1. Moisture is supplied from the moisture addition device 20 through the moisture supply slot 12 of the milling trochanter 4, and the moisture addition amount setting device 58 is set so that the standard volumetric weight is achieved at the start of operation.
The signals output from the control circuit 60 and the drive circuit 64
to the water addition amount regulator 16 for control. The surface of the polished rice grains is moistened and softened by the addition of water, and the thin layer of polished rice is immediately peeled off by the stirring action of the whitening trochanter 4, and the water is sucked together with the peeled bran from the porous-walled rice bran removal polishing chamber 2 to the exhaust fan 29. The heat generated is removed by the stirring action of the milling trochanter, and the surface of the milled rice grain is pretreated to have a smooth surface by peeling off the thin layer of the polished rice.
The lubricated polished rice is whitened by the drying action of the milling trochanter 4 and the drying action of ventilating the polished rice layer through the suction pipe 23, the air suction passage 24, and the ventilation slot 12 of the milling trochanter 4. The surface of the rice grains is processed into smooth and shiny rice and is discharged from the rice discharging section 26 to the outside of the machine.

During the operation of the humidified rice milling, the polished rice flowing out from the milling chamber 6 to the discharge section 26 is stored in the storage tank 42 of the volumetric weight measuring device 49 from the discharge gutter 34.
After the time for white rice to overflow from 2, timer 5
The output signal from the control circuit 60 into which the operation signal of 9 has been input is communicated to the drive circuit 66, and the small electric motor 39 is actuated by the output signal from the circuit 66 to close the on-off valve 3.
5 to open the bottom wall 34A of the discharge gutter 34,
The polished rice is returned to the supply hopper 10 from the bypass flow path 40A via the grain lifting machine 50, the two-way switching valve 53, and the circulation flow path 55. On the other hand, a measurement signal from the load cell 48 that measures the volumetric weight of the polished rice stored in the storage tank 47 is communicated to a control circuit 60, and the measurement signal is communicated from the circuit 60 to a storage circuit 61 and a comparison circuit 62. The memory circuit 61 stores the communicated volumetric weight, and the comparison circuit 62 compares the communicated volumetric weight with the standard volumetric weight input into the setting device 57, and determines that the volumetric weight communicated from the volumetric weight measuring device 49 is higher. If so, the signal delivered from circuit 62 to control circuit 60 signals drive circuit 65 to activate switching valve actuation mechanism 54.
is operated to connect the flow path of the switching valve 53 to the communication flow path 56 to supply super glossy polished rice to the next process. Furthermore, when the volumetric weight measurement value is smaller than the volumetric weight value input to the setting device 57, no output signal is output from the control circuit 60 due to the signal input from the comparison circuit 62, so that the white rice flowing out from the milling chamber 6 is It is then returned to the supply hopper.

The signal output from the drive circuit 66 to the small electric motor 39 is also input to the timer 67, and the timer 6 is activated after a delay of several seconds while the load cell 48 measures the volumetric weight.
7 to the forward/reverse rotary motor 46, and the motor 46
The on-off valve 43 is rotated to cause the white rice to flow out from the storage tank 42, and then the output signal from the timer 59 is sent to the small electric motor 39 and the forward/reverse rotating electric motor 46 via the control circuit 60 and the drive circuit 66. by reversing both the electric motors 39 and 46 to close the on-off valve 3.
5 and 43, the opening 34B and the bottom of the storage tank 42 are closed, the polished rice is stored in the storage tank 42 from the discharge gutter 34, and the dimensional weight is continuously measured by the same process as described above.

Together with the volumetric weight measurement signal of the load cell 47 and the signal output from the control circuit 60 to the storage circuit 61,
The signal is also output from the circuit 60 to the drive circuit 64, and the control signal of the drive circuit 64 changes the control of the water addition amount regulator 16 to control the water addition amount to be slightly larger than the standard water addition amount. In accordance with this control of the amount of water added, the fluctuation in the volumetric weight measured by the volumetric weight measuring device 49 is communicated to the storage circuit 61 so that the volumetric weight becomes larger than the previous volumetric weight measurement stored in the storage circuit 61. , continuously from the control circuit 60 to the drive circuit 64
The water addition amount regulator 16 is controlled via the water addition amount regulator 16 to finely increase or decrease the amount of water added to the rice grains flowing in the humidifying whitening chamber 24. If the storage circuit 61 receives a signal indicating that the volumetric weight is smaller than the volumetric weight of the previous measurement due to a larger amount of added water than the previous measurement, the output signal from the circuit 61 is sent via the control circuit 60 and the drive circuit 64. The next output signal from the memory circuit 61 receives a signal that measures the volumetric weight of polished rice that has been subjected to the action at that water addition amount. As a result, the water addition amount regulator 16 is controlled to a slightly smaller amount of water added than the previous time, and if the volume due to the amount of water added this time becomes large, the water addition amount will be slightly smaller next time. Control the amount.

As mentioned above, the amount of water added under the optimal conditions for ultra-shiny white rice processing is automatically controlled based on the volumetric weight, so it is possible to control the flow fluctuation of the supplied raw material white rice, the degree of polishing, rice temperature, moisture content, and particle size. Even if conditions such as In addition to eliminating concerns and problems such as the occurrence of white rice, the amount of water added is automatically controlled to be optimal for the various conditions of the supplied raw material polished rice, making it possible to produce white rice with a large volumetric weight, that is, ultra-shiny white rice with a smooth grain surface. It can be processed without difficulty. Generally, the volumetric weight of raw polished rice is 800 to 850 g/, and the average weight of the ultra-shiny white rice processed according to the present invention is 870 to 880 g/, and can be up to 910 g// depending on the properties of the rice grains.

During the above operation, when the rice grain detector 8 detects an interruption in the supply of raw materials, the signal transmitted from the detector 8 to the control circuit 60 operates the opening/closing device 9 via the drive circuit 63 to close the supply port 7. At the same time, a signal is outputted from the circuit 60 to the drive circuits 64 and 65 to stop the operation of the water addition amount regulator 16 and stop adding water to the humidifying whitening chamber 24.
Then, the switching valve operating mechanism 54 connects the switching valve 53 to the circulation flow path 55, and in preparation for restarting operation, when the rice grain detector 8 detects the supply of raw material polished rice, the opening/closing device 9 and the water addition amount regulator 16 are operated. The operation is then restarted, and ultra-shiny white rice is processed by the control action described above.

FIG. 5 shows an on-off valve 34 rotatably provided in a discharge gutter 34 and an on-off valve 43 provided at the bottom of a storage tank 42 of a volumetric weight measuring device 49, which are formed by a single driver. This is another embodiment of the mechanism.

an operating rod 68 pivoted on the fulcrum shaft of the on-off valve 35;
A rotating rod A70 pivoted on the servo motor 72 is connected by a connecting rod 69, and a rotating lever B71 also pivoted on the servo motor 72 and a rotating arm 74 pivoted on the fulcrum shaft of the on-off valve 43 are connected. Connecting arm 7
3, and the connecting rod 69 and the connecting portions at both ends of the connecting arm 73 are respectively pivotally supported in a loosely fitted manner.

In this embodiment, the servo motor 7 is controlled by a signal from a timer 59 provided in the control device 33.
2 in the forward and reverse directions to open and close the on-off valves 35 and 43, it is possible to satisfy the measurement control of the volumetric weight and to simplify the configuration of the control device 33.

Effects of the Invention As explained above, according to the method for controlling the amount of water added in a humidifying rice milling machine of the present invention, the volumetric weight of polished rice flowing out from the milling room is measured, and the measured value of the volumetric weight is higher than the previous measurement value. Since the amount of water added is controlled to increase or decrease so that the amount of water is increased, even if the various conditions of the raw material polished rice to be supplied change, the optimal amount of water added can be controlled in accordance with the raw material polished rice. It can be easily processed into super glossy white rice without causing any driving accidents.

Further, according to the water addition amount control device of the present invention,
A volumetric weight measuring device is installed in the flow path of the rice grains flowing out of the milling room, and the volumetric weight of the polished rice is measured by the measuring device, and the amount of water added is adjusted so that the volumetric weight measurement value is larger than the previous measurement value. Since the amount of water is automatically increased or decreased, the amount of water added is limited to the optimum amount according to the conditions of the supplied raw material polished rice, which stabilizes the operation of the equipment and has the remarkable effect of easily processing ultra-shiny white rice. have

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing an embodiment of the present invention, and FIG.
3 is an enlarged front view of the main part shown in FIG. 2, FIG. 4 is a block diagram showing the configuration of the control device, and FIG. 5 is an enlarged side sectional view of the main part of the same embodiment. It is a side view which shows another Example of an on-off valve opening-and-closing mechanism. 1... Machine frame, 2... Porous wall polishing cylinder for removing bran, 3...
...Spiral trochanter, 4...Sperm trochanter, 5...Spindle canal, 6
... Refining room, 7 ... Supply port, 8 ... Rice grain detector,
9... Switching device, 10... Supply hopper, 11...
... Moisture supply hole, 12 ... Moisture supply slot, 13 ... One side terminal, 14 ... Two-fluid ultrasonic nozzle, 15 ... Water supply pipe, 16 ... Water addition amount regulator, 17 ... Water tank,
18...Air supply pipe, 19...Air compressor, 20...
Moisture addition device, 21...Blocking panel, 22...Moisturizing pipe, 23...Air suction pipe, 24...Humidifying whitening room, 25
... Ventilation polishing room, 26 ... Rice removal section, 27 ... Air intake hole, 28 ... Bran collecting gutter, 29 ... Exhaust fan, 30 ...
Load adjustment device, 31...Raw material rice temperature detector, 32
... Finished rice temperature detector, 33 ... Control device, 34
...Rice grain flow down trough, 34A...Bottom wall, 34B...Opening, 35...Opening/closing valve, 35A...Shaft, 36...
Gear, 37... Bracket, 38... Gear, 39
...Small electric motor, 40...Rice grain flow gutter, 40A...
... Bypass flow path, 41 ... Partition wall, 42 ... Rice grain storage tank, 43 ... Opening/closing valve, 44 ... Fulcrum shaft, 45
... Gear, 46 ... Forward/reverse rotation electric motor, 47 ... Gear, 48 ... Load cell, 49 ... Volumetric weight measuring device, 50 ... Grain lifting machine, 51 ... Supply section, 52 ...
Rice grain discharge port, 53...Two-way switching valve, 54...Switching valve operating mechanism, 55...Circulation channel, 56...Communication channel, 57...Standard volume weight setting device, 58...Standard moisture addition Amount setting device, 59... Timer, 60...
Control circuit, 61... Memory circuit, 62... Comparison circuit, 63, 64, 65, 66... Drive circuit, 67
... Connecting rod, 70... Rotating rod A, 71... Rotating rod B, 72... Servo motor, 73... Connecting arm, 74... Rotating arm.

Claims (1)

[Scope of Claims] 1. Moisture is added to rice grains flowing in a milling chamber which is formed by suspending a milling trochanter inside a porous-walled polishing cylinder for rice bran removal, and the volumetric weight of the rice grains flowing out from the milling chamber is determined. A method for controlling the amount of added water in a humidified rice milling machine, characterized by measuring the amount of water added and controlling the amount of added water so that the measured value becomes the largest volumetric weight. 2. In a humidifying rice milling machine in which a moisture addition device is connected to a polishing chamber formed by suspending a polishing trochanter inside a porous-walled polishing cylinder for removing rice bran, moisture is added to the rice grains flowing in the polishing chamber. , a volumetric weight measuring device for measuring the volumetric weight of the rice grains flowing out from the milling chamber is installed during the flow process of the rice grains, and a water adding device installed in the water adding device is installed so that the measured value becomes the largest volumetric weight. 1. A water addition amount control device for a humidifying rice milling machine, characterized in that an amount regulator and the volumetric weight measuring device are connected via a control device. 3. The volumetric weight measuring device is connected and installed in the rice grain discharging section of the milling room, and the volumetric weight is intermittently measured in conjunction with the opening and closing operation of an on-off valve provided in the rice discharging section so as to be freely openable and closable. The moisture addition amount control device for a humidifying rice milling machine according to claim 2, wherein the on-off valve opening/closing mechanism and the volumetric weight measuring device are connected in a related manner. 4. A conveyor is provided to return the rice grains flowing out while the volumetric weight measurement value of the volumetric weight measurement device does not reach the standard value provided in the control device to the supply section of the milling room. The humidifying rice milling machine according to claim 2 or 3, wherein a switching valve is provided at any point in the rice grain flow path, and the volumetric weight measuring device and the operating mechanism of the switching valve are connected via a control device. water addition amount control device.