JP2667303B2 - Rice milling machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a milling machine for milling brown rice at a predetermined milling degree by controlling the internal load of a milling room equipped with a milling roll to be driven, and more particularly to a technique for initial milling.

[0002]

2. Description of the Related Art A conventional rice mill is constructed, for example, as shown in FIG. A feed roll 502 and a whitening roll 503 are provided inside the whitening cylinder 501, and a resistance plate 50 for restricting a cross-sectional area of a passage is provided at an outlet of the whitening cylinder 501.
4 are provided. In the milling process, the feed roll 502 and the milling roll 503 are rotationally driven by a motor 505, and the brown rice 506 inserted from above is pushed toward the resistance plate 504 by the feed roll 502, and the mesh 5 inside the milling cylinder 1 is moved.
Brown rice is milled between the rice mill 09 and the milled rice roll 503 being rotated, and the milled white rice is discharged from the milled rice outlet 507. When the opening degree of the white rice outlet 507 is reduced, the internal load of the whitening chamber is increased and the whiteness degree is increased. When the opening degree is increased, the internal pressure is reduced and the whiteness degree is reduced. The resistance plate 504 was urged by the pressing force of the spring 508 in the direction of closing the white rice outlet 507 so as to keep the degree of milling constant, and a force exceeding the above-mentioned urging force acted on the resistance plate 504 from the brown rice in the polished rice. In some cases, the degree of opening of the white rice outlet 507 is increased so that the white rice having the specified degree of whiteness is discharged from the whitening cylinder 1. Furthermore, in the conventional rice milling machine, at the start of the milling, the brown rice supplied first is discharged without being milled, and in order to prevent this, the circulation transfer path for re-supplying the processed rice discharged first to the rice milling machine again is used. The purpose is to provide the Japanese Patent
No. 227,459. As another method of avoiding unpolished brown rice that is supplied at the start of milling, the opening of the milled rice outlet should be reduced in the initial stage of milling, and from the milling chamber unless the internal load of the milling chamber becomes high. Although it is conceivable to prevent the discharge of ash, it is conceivable that simply setting the opening degree to a small value at the time of initial whitening will result in a constant degree of whitening obtained at the time of initial whitening, and the desired whiteness at each whitening process. This is inconvenient for a rice milling machine having a specification for performing a selective whitening process.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a rice milling machine which performs browning of brown rice with various selectable degrees of milling, with high reliability with the selected milling degree even in the initial milling process. An object of the present invention is to provide a technique capable of performing whitening.

[0004]

In order to solve the above-mentioned problems, one rice mill according to the present invention comprises the following: a) a whitening room having a whitening roll for whitening brown rice to white rice. B) brown rice supply means for supplying brown rice to the whitening chamber; c) white rice outlet adjusting means provided in the white rice outflow area of the whitening chamber; d) internal load detecting means for detecting the internal load of the whitening chamber; e) control means for controlling the white rice outflow adjusting means in accordance with a value detected by the internal load detecting means; f) fineness setting means for setting a desired whiteness degree; g) provided in the control means; Initial whitening processing start determining means for determining an internal load value for starting the initial whitening processing in accordance with the degree of whitening set by the setting means; h) an internal load for starting the initial whitening processing by the internal load detecting means; The value Initial milling process completion determining means to terminate the initial polished processing start, after a predetermined time has elapsed from the start by out. In order to solve the above-mentioned problem, the present invention proposes another rice milling machine having a different configuration of the initial whitening processing end determining means. In this initial whitening processing end determining means, the internal load detecting means includes the initial whitening processing start time. The initial whitening process started by detecting the internal load value for the target is terminated when the internal load value decreases to a predetermined value.

[0005]

In the rice milling machine having the former configuration, when performing the whitening with the selected degree of milling from among a number of milling degrees, the interior of the milling chamber corresponding to the selected milling degree during the initial milling process. The initial whitening process is started based on the load, and ends after a lapse of a predetermined time from the start of the initial whitening process. Further, even in the rice milling machine having the latter configuration, when performing the whitening with a selected degree of milling from among many degrees of milling, the internal load of the milling chamber corresponding to the selected milling degree during the initial milling process. , The initial whitening process is started, and the initial whitening process is terminated when the internal load value decreases to a predetermined value.

[0006]

In other words, brown rice is kept in the polishing room until the internal load value of the polishing room necessary to obtain the desired degree of whitening is reached, the initial whitening process is started, and after a predetermined time has elapsed or Since the initial whitening process is completed when the internal load value decreases to a predetermined value, it is possible to reliably obtain white rice with the selected whiteness. Thereby, the initial rice processing with more uniform quality can be realized, and the subsequent shift to the main rice processing can be performed with high reliability. As one preferred embodiment for monitoring the internal load of the whitening chamber, if a torque sensor is provided on the rotary shaft of the whitening roll and the internal load of the whitening chamber is detected by this torque sensor, the internal load Control based on the detected values functions very accurately. As another preferred embodiment for monitoring the internal load of the refining chamber, a configuration for detecting the current value of the refining roll motor may be employed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. In FIG. 1, reference numeral 1 denotes a main body casing, in which an upper casing 2, a whitening cylinder 3, an intermediate casing 4, and a lower bearing casing 5 are fitted and connected in order from the upper part to the lower part so that their axes coincide. It is configured. A screw conveyor 6 for supplying brown rice is connected to an opening formed in an upper side wall of the upper casing 2. Reference numeral 7 denotes a hopper for feeding brown rice, and reference numeral 8 denotes a driving motor for a screw conveyor. Reference numeral 9 denotes a rotating shaft erected at the center of the upper casing 2, the whitening cylinder 3, and the upper part of the intermediate casing 4, and is formed as a hollow shaft. Upper casing 2 of this rotating shaft 9
A feed roll 10 is mounted in the region and a whitening roll 11 is mounted in the whitening cylinder 3 region. The feed roll 10 and the whitening roll 11 are connected to each other by a connecting pin 12, and the whitening roll 11 is circumferentially engaged with the rotating shaft 9 by a key 13 at a position near the lower end. In addition, milling roll 11
A cylindrical recess 14 is formed at the lower end of the
A fitting tube portion 16 extending to the upper part of the fitting 5 is fitted slidably up and down. The outer peripheral surface of the opening degree regulating member 15 is formed as a cylindrical surface having an appropriate width in the vertical direction. Further, the inner peripheral surface of the fitting cylindrical portion 16 is tapered downward so that the upper end thereof is pointed, and a space is formed between the inner peripheral surface and the outer peripheral surface of the rotating shaft 9. In addition to scraping off the bran adhering to the peripheral surface of the cylindrical concave portion 14 at the lower end of the eleventh portion 11, the bran is configured not to bite between the bottom surface of the cylindrical concave portion 14 and the upper end of the fitting cylindrical portion 16. . A net 17 is provided in the whitening cylinder 3 at an appropriate distance from the outer periphery of the whitening roll 11, and a discharge port 18 for bran generated during whitening is opened in the lower part of the side wall of the whitening cylinder 3. I have. Further, between the lower end of the whitening cylinder 3 and the upper end of the intermediate casing 4, a white rice discharge port forming member 19 is disposed. The inner periphery of the white rice discharge port forming member 19 is formed as a knife edge, and is in contact with the outer peripheral surface of the opening regulating member 15 having an appropriate width in the vertical direction. A white rice discharge port 20 is formed at the upper end of the side wall of the intermediate casing 4, and a chute 21 is attached here. A receiving plate 22 is provided on the rotating shaft 9 for receiving the white rice dropped from the white rice outlet forming member 19 and guiding the white rice to the chute 21. Intermediate casing 4
An intermediate shaft 23 rotatably supported by a pair of upper and lower bearings 24 is disposed at an intermediate portion of the rotating shaft 9, and is fitted and fixed to a lower end of the rotating shaft 9. A torque sensor 25 is disposed at a lower portion in the intermediate casing 4, and the upper shaft portion 2 protruding from one end thereof is provided.
5a is slidably fitted to the intermediate shaft 23 only in the axial direction. A pair of upper and lower bearings 26 is provided in the lower bearing casing 5.
A drive shaft 27 rotatably supported by the shaft is disposed, and its upper end is slidably fitted only in the axial direction with a lower shaft portion 25 b protruding from the other end of the torque sensor 25. Further, a drive pulley 28a is fixed to a lower end portion of the drive shaft 27. The drive pulley 28a is driven to rotate by a motor 28 (not shown) via a drive belt 28b. An opening adjusting shaft 29 is inserted into the hollow rotating shaft 9, and the lower end thereof and the opening regulating member 15 are connected by a connecting member 30 that passes through a long hole 31 formed in the hollow rotating shaft 9. . The upper end of the opening adjustment shaft 29 is relatively rotatably engaged with the upper surface of an engagement member 34 supported on a lifting member 32 via a spring 33. The elevating member 32 is configured to be able to move up and down by elevating means 35, which is schematically shown in FIG. 2 and which is shown in detail in FIG.
The elevating means 35 includes a drive motor 37 as shown in FIG.
, A movable nut body 39 screwed to the feed screw shaft 38, and a guide rod 40. The movable nut body 39 is connected to the lifting member 32. That is, the biasing force of the spring 33 can be adjusted by the elevating means 35.

[0008] In the rice milling machine constructed as described above, with the rotary shaft 9 being rotationally driven by the drive pulley motor 28 via the drive shaft 27 and the torque sensor 25, brown rice is fed from the hopper 7 by the screw conveyor 6. The upper casing 2
When put into the brown rice, the brown rice is sent to
Then, the whitening is performed between the whitening roll 11 and the net 17 which is rotated while being pressed. In the bran separated by the whitening treatment, the air introduced into the rotary shaft 9 passes through a through hole (not shown) provided in the rotary shaft 9 and the whitening roll 11 so as to project,
The air is discharged to the outside together with the airflow flowing toward the bran discharge hole 18 through the net 17. The opened white rice is pressed down against the force of the spring 33 biased by the lifting / lowering means 35 by the pressure between the net 17 of the whitening cylinder 3 and the whitening roll 11, that is, the pressure inside the whitening chamber. It is sequentially discharged from an annular discharge port formed between the outer periphery of the restriction member 15 and the white rice outlet forming member 19, and then discharged from the white rice discharge port 20 through the chute 21 to the outside. Here, the pressure inside the polishing chamber is detected by the torque sensor 25 as an internal load of the polishing chamber for the rotating shaft 9.

FIG. 3 is a control block diagram of a rice mill according to the present invention. A signal from the torque sensor 25 described above is input, and control signals to the motor 8 for the screw conveyor 6, the motor 37 for the lifting device 35, and the rotating shaft 9, that is, the motor 28 for the feed roll 10 and the whitening roll 11. Is a central part of the control of the rice milling machine. The control means 36 employs a control method using a normal microcomputer,
U100, ROM103, RAM104, table 10
5 and 106, an input interface 101, an output interface 102, etc., and a polishing degree selecting means 200 for selecting a desired polishing degree for polishing with various polishing degrees in this rice polishing machine. Here, the degree-of-milling selection means 200 includes a ten-key keyboard 210 for selecting the degree of milling and a display 220.
In this embodiment, the degree of whitening can be set from 1 to 16, and the greater the value, the higher the degree of whitening.

[0010] The table 105 stores torque values corresponding to the internal load of the whitening room suitable for the initial whitening process in association with the selectivity selected by the whiteness selection means 200. In addition, three sets of the series of torque values are prepared in this embodiment, and can be selected by the dip switch 105a according to the characteristics of the rice mill.
That is, as can be clearly understood from the table of FIG. 4, in the level 1 set, R11 corresponds to 16 levels of milling degree.
To R1 16 are stored. In the level 2 set, R21 to R2 are stored.
In the set of level 16 and level 3, R31 to R316 are stored. The relationship between the stored torque value level and the degree of milling is shown in the graph of FIG. 5, in which the torque value monotonically increases as the degree of milling increases, and the larger the set, the larger the value. Has become. This makes it possible to use a torque value that can sufficiently compensate for variations in the characteristics of the rice milling machine as a load value in the whitening room for performing a desired initial whitening process. That is, the CPU 100
, The table 105 and the DIP switch 105a constitute an initial whitening processing start means.

An upper limit value and a lower limit value of the torque value corresponding to the internal load of the whitening chamber suitable for the main whitening process are stored in the table 106 in association with the selectivity selected by the whiteness selection means 200. ing. It is also possible to prepare a plurality of sets of this series of torque values, in which case an appropriate set can be selected by the dip switch 106a according to the characteristics of the rice mill.

The CPU 100 reads the ROM 10 based on the torque detection signal sent from the torque sensor 25 and the whitening processing mode selected by the whitening degree selecting means 200.
3, the motor 8 for the screw conveyor 6, the motor 37 for the lifting device 35, and the like, referring to the torque value read from the table 106 as necessary. A control signal is output to the motor 28 for the rotating shaft 9 to control the whitening process. The control flow of the whitening process of the rice mill according to the present invention will be described below with reference to the flowcharts shown in FIGS. FIG. 6 is a flow chart showing the main routine of this rice polishing machine. First, the operator selects the desired whitening degree, that is, the whitening processing mode (# 0), and presses the start button. When the whitening process is started, the lifting / lowering means 35 is driven to drive the spring 3
The bias of No. 3 is adjusted to set the biasing force of Pmin on the opening adjustment shaft 29 (# 2). The motor 28 is driven to rotate the whitening roll 11 and the feed roll 10 (# 4), and the detection value of the torque sensor in this state, that is, the no-load torque value: To
Is taken and stored in a predetermined address of the RAM 104 (# 6). Actually, the detection by the torque sensor 25 is repeatedly performed at an appropriate time interval in a torque detection interrupt process described later, and the detected value is stored in a predetermined address of the RAM 104 after an appropriate calculation process. Therefore, in the control routine, the torque detection value may be fetched therefrom. Next, the urging force of the opening adjustment shaft 29 is set to Pmax which is a value higher than Pmin (# 8). From this, a substantial whitening process is started, which is divided into an initial whitening process (# 10), a main whitening process (# 12), and a final whitening process (# 14) which will be described in detail later.

The above-described torque detection interrupt processing is performed in the seventh step.
As shown in the figure, first, a torque detection value: T is fetched from the torque sensor 25 and stored in a predetermined RAM 104 address (# 1100). In this embodiment, for example, eight torque detection values are stored and rewritten in order from the first input value to the newly input value. This makes it possible to perform calculations using the eight latest torque detection values in a later step. An average torque value: Tm is calculated from the detected torque value using the moving average method (# 120).
0), subtracting the no-load torque value: To acquired in # 4 from this average torque value: Tm, and multiplying by a coefficient: K, a threshold value for ending the main whitening process, which will be described in detail later: S
Is calculated (# 1300). Coefficient: K is appropriately selected from the range of 0 <K <1. This threshold: S is a predetermined R
Stored at the address of the AM 104 (# 1400)
At that time, 200 storage locations are prepared, and the latest 200 reference values are stored. If this interrupt processing is operated in a cycle of, for example, 10 ms, the calculated threshold value: S up to two seconds before is stored. Of course, it is possible to store the threshold value: S up to an arbitrary time before by increasing the storage location or changing the operation cycle.

Next, the initial whitening processing will be described with reference to FIG. 8; first, the torque value Rmn corresponding to the whitening degree selected in step # 0 is read from the table 105 (# 5
0), which is the initial whitening reference value: Tob. Next, the screw conveyor 6 is started to operate in the first mode in which the transport amount is large (# 51), and the brown rice is transferred from the hopper 7 to the milling cylinder portion 3 (# 51).
Into the internal space, that is, the refining room. After the elapse of the time set by the first timer in which the milling room is almost filled with the supplied brown rice (# 52, # 54), the screw conveyor 6 is stopped (# 56). Subsequently, the operation is restarted in the second mode in which the transport amount is small (# 64), and step # 5 is performed.
Initial whitening reference value set at 0: compared with Tob (# 6)
0, # 62), when the detected value exceeds Tob, the screw conveyor is stopped assuming that the milling room is completely filled with brown rice (# 64). In this state, the whitening is performed in the whitening room for the time set by the second timer (# 66, # 68).
It is preferable to control the screw conveyor so that the first mode is a continuous operation and the second mode is an intermittent operation. Alternatively, the first mode may be a high-speed operation and the second mode may be a low-speed operation. It is also possible to use Further, instead of setting the operation time of the first mode by the timer, it is also possible to control the operation until the predetermined load value, that is, the detected torque is obtained, while monitoring the internal load of the polishing chamber by the torque sensor. It is. In this initial whitening process, since the urging force on the opening adjustment shaft 29 is adjusted to be high, unmilled brown rice is not released. In the white rice milled during this period, the supply of brown rice by the screw conveyor is resumed in the next main milling process, and the opening adjustment shaft 29, that is, the opening control member 15 is moved downward by the pushing pressure of the supplied brown rice into the milling chamber. Then, a discharge port is formed between the opening degree regulating member 15 and the white rice discharge port forming member 19, so that white rice is discharged from the discharge port.

Next, the main whitening processing will be described with reference to FIGS. 9 to 13; first, the whitening degree selected by the whitening degree selecting means 200 is checked (# 100), and the whitening degree "1" is checked. Case # 1
Based on the steps from 10 to # 160, the degree of milling “2”
In the case of # 210 to # 260, in the case of whiteness “3”, in the same way as in the steps of # 310 to # 360, similarly in the case of whiteness “16”, # 410 to # 4
Based on the 60 steps, each of the whitening processes is performed according to the 16 whiteness degrees. For example, when the degree of whitening "1" is selected, the bias of the spring 33 is changed by driving the motor 37 of the lifting / lowering means 35, and the urging force applied to the opening degree adjusting shaft 29 is suitable for the degree of whitening "1". Is set to P1 (# 110). The urging forces P1 to P16 corresponding to the degree of milling are stored in the table 106 and read as needed. Next, the screw conveyor 6 is started to operate in the third mode (# 120), and starts supplying fresh brown rice to the polishing room. This operation in the third mode is a so-called steady continuous operation of the screw conveyor 6 and is usually performed by the screw conveyor 6.
The specifications and the like of the motor 8 are determined based on the load during the operation. In the refining process started from this, the torque value detected by the torque sensor 25 is the refining degree.
The torque range for 1 ", that is, the lower limit value: T1a and the upper limit value: T1b are compared (# 130). In the example, the detected torque value has a correlation,
This is because brown rice can be whitened with a desired degree of whitening by accurately controlling the detected torque value. The lower limit value and the upper limit value corresponding to the degree of whitening are stored in the table 106 and read out as necessary. If the detected torque value: T is smaller than the lower limit value: T1a, the lifting / lowering means 35 is controlled to increment the urging force of the opening adjustment shaft (# 140). If the detected torque value: T is larger than the upper limit value: T1b, 35, the urging force of the opening adjustment shaft is decremented (# 150). When the detected torque value: T falls between the lower limit value: T1a and the upper limit value: T1b, the urging force of the opening adjustment shaft is depressed. As it is. That is, when the internal load of the whitening chamber increases and the load torque acting on the whitening roll 11 increases, the torque detected by the torque sensor: T
Becomes larger than the upper limit value: T1b. In this case, the control means 3
The lifting / lowering means 35 is driven by the control signal from 6, and the lifting / lowering member 32 is lowered. As a result, the upward urging force of the opening adjustment shaft 29 by the spring 33 is reduced, and the opening adjustment shaft, that is, the opening restriction member 15 is lowered, and the discharge port formed between the white rice discharge port forming member 19 and the discharge port is formed. Increases the cross-sectional area of flow. Therefore, the internal load of the refining room is reduced. vice versa,
When the internal load of the refining chamber is reduced, the flow cross-sectional area of the discharge port is reduced through a similar procedure, and the internal load of the refining chamber increases. As described above, by maintaining the torque detection value of the torque sensor constant, an accurate degree of whitening, that is, white rice in the selected whitening mode can be obtained.

During such main whitening processing, the detected torque value: T is lower than the threshold value: S described in the torque detection interrupt processing, and in this embodiment, it is lower than the threshold value: S calculated two seconds before. In this case, all the brown rice put in the hopper 7 is supplied to the whitening chamber, and it is judged that the brown rice to be supplied is exhausted (# 160), and this main whitening treatment is finished,
The process moves to the next terminal whitening process. That is, the latest torque detection value is checked with a threshold value created by processing the moving average value of the torque values detected a predetermined time ago, and the timing of the end of the main whitening process, that is, the start of the final stage whitening process. Is determined. So far, the main whitening processing at the whitening degree “1” has been described, but the processing at other whitening degrees is similarly performed. However, at the milling degree “2”, the urging force at # 210 is P
2 and the lower limit of the detected torque at # 230 is T2a
Is replaced by T2b. Similarly, whiteness
3 ", the urging force at # 310 is set to P3, and at # 33
The lower limit of the detected torque at 0 is replaced with T3a and the upper limit of the detected torque is replaced with T3b. Similarly, when the refinement degree is "16", the urging force at # 410 is set to P16, and the lower limit value of the detected torque at # 430 is replaced with T16a and the upper limit value is replaced with T16b.

Next, the terminal stage whitening process will be described with reference to FIG. 14. First, the urging force on the opening adjustment shaft 29 is increased by controlling the lifting / lowering means 35, and is set to, for example, Pmax (# 5).
00), the screw conveyor 6 is stopped. Opening adjustment shaft 2
Since the urging force on the No. 9 is suddenly increased, the flow cross section of the discharge port is also reduced, and the release of white rice is suppressed. In this state,
After the whitening processing by rotation of the whitening roll 11 has continued for the time set by the third timer (# 520, # 530),
In other words, the time when the brown rice in the whitening room is almost whitened is reduced, and the urging force on the opening degree adjustment shaft 29 is reduced, for example, by setting it to Pmin (# 540).
Is lowered, and as a result, the flow cross section of the discharge port is enlarged, and the white rice in the polishing chamber is discharged. The time when the white rice is completely discharged from the milling chamber is set in advance in a fourth timer, and when the fourth timer expires (# 520, # 53).
0), the rotation shaft 9 stops the feed roll 10 and the whitening roll 11 as a result (# 570), and a series of whitening processing is completed.

FIG. 15 is a graph showing the relationship between the above-mentioned initial rice processing, main rice processing, terminal rice processing and the internal load of the whitening chamber, that is, the detected torque. Explaining this graph, the rice mill is in a no-load operation at the time of X0, and the urging force of Pmax is applied to the opening adjustment shaft 29 at the time of X1, and the supply of brown rice by the screw conveyor 6 is started. The detected torque value gradually increases, and at the time X2, the state of the internal load in which the whitening chamber can be whitened, that is, the detected torque value reaches Toa, and initial whitening is started. When the detected torque value reaches Tob determined corresponding to the selected milling degree at the time point of X3, the screw conveyor 6 is stopped for a predetermined time, the supply of brown rice is stopped, and the discharge of white rice is also stopped. The initial whitening at will continue. As the whitening process proceeds, bran is removed from the brown rice, and the detected torque value gradually decreases. At the time of X4, main refining is started, and an urging force corresponding to the selected refining mode is applied to the opening adjustment shaft 29, and the screw conveyor 6 is restarted. When the brown rice is supplied to the milling chamber, the torque value rises, and while opening the white rice from the discharge port, the opening degree adjusting shaft 29 is set so as to fall between the reference torques T1a and T1b corresponding to the selected milling degree. The whitening process is performed while controlling the urging force on the white paper. When there is no brown rice to be whitened, no brown rice is supplied to the whitening room, so that the detected torque value starts to decrease and falls below a threshold value: S obtained from a moving average value of the torque value detected a predetermined time ago. At the time point, that is, the time point of X5, the urging force to the opening degree adjusting shaft 29 is increased to Pmax to suppress the release of the white rice from the discharge port, and the final milling is performed. At the time when the brown rice in the polishing room was refined, that is, at the time of X6, the urging force against the opening adjustment shaft 29 was reduced to Pmin, and the rice was discharged from the polishing room to X7.
At the point of time, the whitening processing is completed.

(Alternative Embodiment) In the above-described embodiment, a torque sensor provided on the rotating shaft of the refining roll is used to detect the internal load of the refining chamber. , And the internal load of the refining chamber can be monitored. In addition, instead of comparing the latest torque detection value with the threshold value determined a predetermined time ago to determine the end of the main whitening process, that is, the timing of the start of the final whitening process, the value is determined a predetermined time ago. By comparing the threshold value with the latest moving average value, it is also possible to avoid a malfunction caused by a sudden detection value.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing the entire configuration of a rice milling machine.

FIG. 2 is a side view showing an urging force changing unit of the opening degree regulating member.

FIG. 3 is a control block diagram.

FIG. 4 is a schematic diagram showing a table for storing torque values for initial whitening processing;

FIG. 5 is a simplified graph showing a change in a torque value for an initial whitening process at each level.

FIG. 6 is a flowchart showing a control flow.

FIG. 7 is a flowchart showing a control flow;

FIG. 8 is a flowchart showing a control flow.

FIG. 9 is a flowchart showing a control flow.

FIG. 10 is a flowchart showing a control flow.

FIG. 11 is a flowchart showing a control flow.

FIG. 12 is a flowchart showing a control flow;

FIG. 13 is a flowchart showing a control flow.

FIG. 14 is a flowchart showing a control flow.

FIG. 15 is a graph showing a relationship between a whitening process and a value detected by a torque sensor.

FIG. 16 is a schematic diagram showing a configuration of a conventional rice mill.

Claims (4)

(57) [Claims] 1. A milling machine having the following configuration: a) a milling room provided with a milling roll for milling brown rice into white rice, b) a brown rice supply means for supplying brown rice to the milling room, c) the milling room D) an internal load detecting means for detecting an internal load of the polishing room; e) controlling the white rice outflow adjusting means in accordance with a value detected by the internal load detecting means. F) a fineness setting means for setting a desired fineness; g) an initial whitening process corresponding to the fineness set by the fineness setting means provided in the control means. Initial whitening processing start determining means for determining an internal load value h) The internal load detecting means starts the initial whitening processing.
Initial finesse started by detecting the internal load value
First, the white processing is terminated after a predetermined time has elapsed from the start.
Means for terminating the final whitening process. 2. A rice mill having the following constitution: a) Rice milling with a milling roll for milling brown rice to make white rice.
Chamber, b) the brown rice supply means for supplying a brown rice milling chamber, c) the milling chamber rice discharge port provided in the rice outflow region of
Adjusting means, d) an internal load detecting means for detecting an internal load of the refining chamber.
Stage, e) the rice outflow adjusting means to said internal load detecting means
That control means for controlling in response to the detected value, f) milling degree setting means for setting a desired milling degree, g) provided in the control unit, the milling degree setting means
Therefore, the initial whitening process is started according to the set whiteness.
Of initial whitening to determine internal load value
Stage, h) the internal load detecting means is of the initial milling process start
The initial fine initiated by Rukoto detecting the internal load value of the order
White processing is performed when the internal load value decreases to a predetermined value.
Means for determining the end of the initial whitening process to be ended. 3. A rice polishing machine according to said internal load detecting means according to claim 1 or 2 is constituted by a torque sensor for detecting a torque of the rotating shaft of the milling roll. 4. The internal load detecting means according to claim 1, wherein
2. The apparatus according to claim 1, wherein the current value of the data is detected.
Or the rice mill according to 2.