Rice grain whiteness adjustment device for rice milling equipment

Abstract

To make it possible to easily and quickly introduce a rice grain whiteness adjusting device, which can perform automatic rice milling adjustment based on a measured whiteness value, into an existing rice milling machine.SOLUTION: A rice grain whiteness adjusting device 1 is provided in a first discharge passage R1, a second discharge passage R2 and a third discharge passage R3 of a first rice milling machine 2, a second rice milling machine 3 and a third rice milling machine 4. A first rice milling adjustment mechanism 11A, a second rice milling adjustment mechanism 11B and a third rice milling adjustment mechanism 11C change a resistance force added to rice grains which pass through the first discharge passage R1, the second discharge passage R2 and the third discharge passage R3 respectively. Retrofit control means 40 controls the first rice milling adjustment mechanism 11A, the second rice milling adjustment mechanism 11B and the third rice milling adjustment mechanism 11C so as to change the resistance force added to the rice grains, when comparing measured whiteness values, which have been obtained by a first whiteness measuring instrument 12A, a second whiteness measuring instrument 12B and a third whiteness measuring instrument 12C, to a target set value, and determining that the rice grains are not in a target rice milling state.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a rice grain whiteness adjusting device for rice milling equipment that applies resistance to rice grains discharged from a rice mill to adjust the whiteness of the polished rice to a desired level. [Background technology]

[0002] Conventionally, rice milling equipment measures the whiteness of milled rice grains to inspect whether quality is being ensured. If the measured whiteness value differs from the target set value, the equipment's rice milling operation is adjusted. This adjustment of the rice milling operation is sometimes performed by a rice milling adjustment mechanism provided in the rice grain discharge passage of the rice milling machine. For example, the rice milling adjustment mechanism disclosed in Patent Document 1 includes a resistance cover that can rotate around a rotation axis extending horizontally and intersecting the discharge passage. The resistance cover changes its position blocking the discharge passage by rotating around the rotation axis. A detachable weight is attached to the back side of the resistance cover, which applies force to rotate the resistance cover around the rotation axis to block the discharge passage. By changing the weight of the weight, an operator can change the resistance force applied to the rice grains passing through the discharge passage and adjust the milling state of the rice grains in the milling chamber.

[0003] However, the adjustment of the rice milling state as described above is often performed based on the experience and intuition of the worker, which results in a problem of poor work efficiency. To avoid this, it is conceivable to adjust the rice milling state of rice grains by automatically changing the position of the resistance cover of the rice milling adjustment mechanism based on the measured whiteness value, instead of adjusting the rice milling state based on the experience and intuition of the worker. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 5930395 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when performing automatic attitude control of the resistance cover using a rice milling machine already equipped with a rice milling adjustment mechanism as in Patent Document 1, it becomes necessary not only to improve the rice milling adjustment mechanism to a structure suitable for automation, but also to change the control specifications of the main control panel that performs the rice milling operation of the rice milling machine. Therefore, there are problems in that the improvement of the device becomes large-scale, which increases the time spent on improving the equipment and the cost of the improvement.

[0006] The present invention was made in consideration of these points, and its purpose is to make it possible to easily and quickly install a rice grain whiteness adjusting device that can automatically adjust rice polishing based on measured whiteness values ​​into existing rice polishing machines. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention is characterized in that a post-installation control means is provided that is configured separately from the main control panel that controls the rice milling operation of the rice milling machine, and the post-installation control means controls the rice milling adjustment means based on the measurement value obtained by the whiteness measurement means.

[0008] Specifically, the target is a rice grain whiteness adjusting device for rice milling facilities that has at least one rice milling machine with a main control panel that controls the rice milling operation and a discharge passage that discharges milled rice grains from the milling chamber, and the following measures have been taken.

[0009] That is, the first invention comprises a rice milling adjustment means that adjusts the milling state of the rice grains in the milling chamber by changing the position of a resistance lid that blocks the discharge passage, thereby changing the resistance force applied to the rice grains passing through the discharge passage; a whiteness measurement means that measures the whiteness value of the rice grains; and a retrofit control means that is connected to the rice milling adjustment means and the whiteness measurement means and is configured separately from the main control panel, and the retrofit control means compares the measured whiteness value obtained by the whiteness measurement means or a whiteness increase value obtained by calculation based on the measured whiteness value with a preset target set value, and when it is determined that the rice grains are not in a target milling state, it controls the rice milling adjustment means to change the position of the resistance lid and change the resistance force applied to the rice grains.

[0010] In the second invention, in the first invention, the retrofit control means comprises a case portion having a display monitor on its surface, and a substrate portion disposed inside the case portion and connected to the rice polishing adjustment means and the whiteness measurement means, and the substrate portion comprises an input operation portion that displays a target setting value on the display monitor so that the target setting value can be input, and a data display portion that displays the measured whiteness value or the whiteness increase value.

[0011] A third invention is characterized in that in the first or second invention, the rice milling equipment has a plurality of the rice milling machines, and is configured so that rice is milled in each of the rice milling machines in turn, the rice milling adjustment means and the whiteness measurement means are respectively disposed in each of the rice milling machines, and the retrofit control means is configured to be able to store in advance in a control priority table the control priorities of the rice milling adjustment means, and when it is determined that the rice grains are not in a target polished state, it controls the rice milling adjustment means in order starting from the one with the highest priority based on the control priority table.

[0012] A fourth invention is characterized in that, in the third invention, the add-on control means comprises a parent control panel that controls one of the rice milling adjustment means, and at least one child control panel that controls the rice milling adjustment means other than the rice milling adjustment means controlled by the parent control panel, the child control panel being connected to the parent control panel via communication means, the parent control panel storing the control priority table, and when it is determined that the rice grains are not in a target rice milling state, it controls the parent control panel and the child control panel corresponding to the rice milling adjustment means with a higher priority based on the control priority table. [Effects of the Invention]

[0013] In the first invention, the rice milling adjusting means that adjusts the milled state of rice grains in the discharge passage is controlled by a retrofit control means that is installed separately from the main control panel of the rice milling machine, so there is no need to change the control specifications of the main control panel of the rice milling machine when introducing a rice grain whiteness adjusting device, and the only improvement required for the existing rice milling machine is to improve the rice milling adjusting means to a structure suitable for automation. Therefore, the improvement of the device can be kept small, which shortens the time spent on improving the equipment and keeps the cost of the improvement low.

[0014] In the second invention, a display monitor that allows input of the target whiteness setting value and displays the measured whiteness value, etc., is integrally provided on the surface of the case that houses the substrate that controls the rice milling adjustment means, eliminating the need to provide a separate display monitor, and allowing the entire rice grain whiteness adjustment device to have a compact structure.

[0015] In the third invention, when a plurality of rice polishing machines perform rice polishing operations in sequence to polish rice grains and rice polishing adjustment means are attached to each rice polishing machine, rather than controlling all of the rice polishing adjustment means simultaneously, it is possible to select and control the rice polishing adjustment means in sequence that can effectively bring the whiteness of the rice grains closer to the target set value, thereby eliminating unnecessary operations of the device and making rice polishing adjustment efficient.

[0016] In the fourth aspect of the present invention, the parent and child units are set on a control panel installed in each rice polishing machine, and a rice polishing adjustment means is installed in each rice polishing machine, so the configuration of the rice grain whiteness adjustment device installed in each rice polishing machine can be made approximately the same. Therefore, there is no difference in the installation work for each rice polishing machine, and rice polishing equipment can be easily improved. [Brief explanation of the drawings]

[0017] [Figure 1] 1 is a front view of rice milling equipment equipped with a rice grain whiteness adjusting device according to an embodiment of the present invention. [Figure 2] 1 is a block diagram showing the relationship between a control unit, a whiteness measuring device, a rice milling adjustment mechanism, and a display monitor in rice milling equipment according to an embodiment of the present invention. FIG. [Figure 3] 1 is a perspective view of a rice grain whiteness adjusting device according to an embodiment of the present invention. FIG. [Figure 4] 1 is a schematic side view of a rice grain whiteness adjusting device according to an embodiment of the present invention. [Figure 5] FIG. 10 is a diagram showing the control priorities of the first rice milling machine, the second rice milling machine, and the third rice milling machine of the control unit. DETAILED DESCRIPTION OF THE INVENTION

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the following description of the preferred embodiments is merely exemplary in nature.

[0019] 1 shows a rice milling facility 10 equipped with a rice grain whiteness adjusting device 1 according to an embodiment of the present invention. The rice milling facility 10 is a so-called multi-seat rice mill, in which a first rice miller 2, a second rice miller 3, and a third rice miller 4 are arranged in a horizontal line in this order from the upstream side of the facility.

[0020] The first rice polishing machine 2 is a vertical grinding-type rice polishing machine and is equipped with a first rice polishing processing section 2a that grinds the surface of the raw brown rice in a polishing chamber S1, a first supply section 2b that is provided at the upper end of the first rice polishing processing section 2a and supplies the raw brown rice into the first rice polishing processing section 2a, and a first discharge chute section 2c that is provided on the downstream side of the first rice polishing processing section 2a and has a first discharge passage R1 that discharges the rice grains that have been ground in the first rice polishing processing section 2a.

[0021] The second rice polishing machine 3 is a vertical friction-type rice polishing machine and is equipped with: a second rice-polishing processing section 3a that performs friction processing on the surfaces of the rice grains that have been ground by the first rice polishing machine 2 in a polishing chamber S2; a second supply section 3b that is provided on the upstream side of the second rice-polishing processing section 3a and at a position corresponding to the downstream end of the first discharge passage R1 and that supplies the rice grains that have been ground by the first rice polishing machine 2 into the second rice-polishing processing section 3a; and a second discharge chute section 3c that is provided on the downstream side of the second rice-polishing processing section 3a and that is provided with a second discharge passage R2 that discharges the rice grains that have been friction-treated in the second rice-polishing processing section 3a.

[0022] The third rice polisher 4 is a vertical friction-type rice polisher and is equipped with: a third rice polishing section 4a that polishes the surfaces of the rice grains that have been friction-treated in the second rice polisher 3 in a polishing chamber S3; a third supply section 4b that is provided on the upstream side of the third rice polishing section 4a and at a position corresponding to the downstream end of the second discharge passage R2 and supplies the rice grains that have been friction-treated in the second rice polisher 3 into the third rice polishing section 4a; and a third discharge chute section 4c that is provided on the downstream side of the third rice polishing section 4a and is provided with a third discharge passage R3 that discharges the rice grains that have been polished in the third rice polishing section 4a.

[0023] A main control panel 5 connected to the first rice polisher 2, the second rice polisher 3, and the third rice polisher 4 is disposed downstream of the third rice polisher 4, and the main control panel 5 controls the rice polishing operations of the first rice polisher 2, the second rice polisher 3, and the third rice polisher 4.

[0024] The rice grain whiteness adjusting device 1 is composed of a first whiteness adjusting unit 6 attached to the first rice polishing machine 2, a second whiteness adjusting unit 7 attached to the second rice polishing machine 3, a third whiteness adjusting unit 8 attached to the third rice polishing machine 4, and a brown rice whiteness measuring device 9 attached to the first supply section 2b and capable of measuring the whiteness value of raw brown rice.

[0025] As shown in Figure 2, the first whiteness adjustment unit 6 includes a first rice milling adjustment mechanism 11A (rice milling adjustment means) attached to the first discharge chute section 2c, a first whiteness measuring device 12A (whiteness measuring means) capable of measuring the whiteness value of rice grains, and a first sub-control panel 20A connected to the first rice milling adjustment mechanism 11A and the first whiteness measuring device 12A, and the first sub-control panel 20A is configured separately from the main control panel 5.

[0026] The first whiteness measuring device 12A is operated by a generally known measuring mechanism such as that disclosed in Japanese Patent Publication No. 7-71637.

[0027] As shown in FIG. 3, the first rice milling adjustment mechanism 11A includes a support frame 13 that is gate-shaped when viewed from the front, and the lower portion of the support frame 13 is fixed to the upper portion of the first discharge chute section 2c.

[0028] As shown in Figures 3 and 4, a support shaft 14 is rotatably attached to the upper part of the support frame 13, extending horizontally so as to intersect with the first discharge chute section 2c and penetrating each side portion of the support frame 13.

[0029] An air cylinder 15 having a rod portion 15a that extends and contracts upward is disposed on one outer side of the support frame 13, and the tip of the rod portion 15a is connected to one end of the support shaft 14 via a connecting rod 16.

[0030] An air control case 17 connected to an air compressor 21 via an air regulator 19 is disposed on the first rice milling processing section 2a side of the air cylinder 15.

[0031] The air control case 17 contains an electropneumatic regulator 17a that supplies compressed air to the air cylinder 15 and an electromagnetic valve 17b that discharges compressed air from the air cylinder 15, and the electropneumatic regulator 17a controls the extension and retraction movement of the rod portion 15a of the air cylinder 15.

[0032] A plate-shaped resistance cover 18 is fixed to the support shaft 14 on the upstream side of the first discharge passage R1 and extends in a direction intersecting with the first discharge passage R1.

[0033] The resistance cover 18 rotates up and down when the support shaft 14 rotates via the connecting rod 16 due to the extension and contraction of the rod portion 15a of the air cylinder 15. When it rotates upward, it opens the first discharge passage R1, and when it rotates downward, it blocks the first discharge passage R1.

[0034] The first whiteness measuring device 12A is provided at the center of the rear surface of the resistance cover 18, and is adapted to measure the whiteness value of rice grains passing through the first discharge passage R1.

[0035] The first sub-control panel 20A is arranged on the opposite side of or adjacent to the support frame 13 of the air cylinder 15, and comprises a case portion 20a having a substantially rectangular plate shape with a thickness, a touch panel type display monitor 20b provided on the surface of the case portion 20a, and a substrate portion 20c arranged inside the case portion 20a, and the substrate portion 20c comprises a data display portion 20d that displays various setting values ​​and the measured whiteness value of the first whiteness measuring instrument 12A, as shown in Figure 2.

[0036] The base plate portion 20c controls the electro-pneumatic regulator 17a to change the position of the resistance cover 18 blocking the first discharge passage R1, and the first rice milling adjustment mechanism 11A changes the position of the resistance cover 18 blocking the first discharge passage R1 to change the resistance force applied to the rice grains passing through the first discharge passage R1, thereby adjusting the milling state of the rice grains in the milling chamber S1.

[0037] The second whiteness adjustment unit 7 includes a second rice milling adjustment mechanism 11B (rice milling adjustment means) attached to the second discharge chute section 3c, a second whiteness measuring device 12B (whiteness measuring means) capable of measuring the whiteness value of rice grains, and a second sub-control panel 20B connected to the second rice milling adjustment mechanism 11B and the second whiteness measuring device 12B, and the second sub-control panel 20B is configured separately from the main control panel 5.

[0038] The second rice milling adjustment mechanism 11B, the second whiteness measuring device 12B, and the second sub-control panel 20B have the same configuration as the first rice milling adjustment mechanism 11A, the first whiteness measuring device 12A, and the first sub-control panel 20A, respectively, and therefore detailed explanations thereof will be omitted.

[0039] The third whiteness adjustment unit 8 includes a third rice milling adjustment mechanism 11C (rice milling adjustment means) attached to the third discharge chute section 4c, a third whiteness measuring device 12C (whiteness measuring means) capable of measuring the whiteness value of rice grains, and a main control panel 20C connected to the third rice milling adjustment mechanism 11C and the third whiteness measuring device 12C.

[0040] The parent control panel 20C is configured separately from the main control panel 5, and the first child control panel 20A, the second child control panel 20B and the parent control panel 20C constitute the retrofit control means 40 of the present invention.

[0041] The third rice-milling adjusting mechanism 11C has the same configuration as the first rice-milling adjusting mechanism 11A and the second rice-milling adjusting mechanism 11B, and the third whiteness measuring instrument 12C has the same configuration as the first whiteness measuring instrument 12A and the second whiteness measuring instrument 12B, so detailed explanations will be omitted.

[0042] Like the first and second sub-control panels 20A and 20B, the main control panel 20C includes a case 20a, a display monitor 20b, and a board 20c, and the board 20c includes a data display 20d.

[0043] The board section 20c of the parent control panel 20C is connected to the board section 20c of the first child control panel 20A and the board section 20c of the second child control panel 20B by wireless communication means 30 such as Wi-Fi or Bluetooth so that they can communicate with each other.

[0044] The board section 20c also includes an input operation section 20e, a calculation section 20f, a storage section 20g, and a determination section 20h.

[0045] The input operation unit 20e displays various settings on the display monitor 20b so that they can be input, and for example, the target whiteness value of rice grains and the target whiteness increase value during rice polishing processing can be input.

[0046] The whiteness increase value is, for example, the value obtained by subtracting the whiteness value of raw brown rice from the whiteness value of rice grains processed by the third rice polisher 4, or the value obtained by subtracting the whiteness value of rice grains processed by the second rice polisher 3 from the whiteness value of rice grains processed by the third rice polisher 4, and refers to the amount of change in the whiteness value of rice grains when they pass through at least one rice polisher.

[0047] The calculation unit 20f is configured to calculate a whiteness increase value based on the measured whiteness values ​​obtained by the first whiteness measuring device 12A, the second whiteness measuring device 12B, the third whiteness measuring device 12C and the brown rice whiteness measuring device 9.

[0048] The storage section 20g stores the target whiteness value and the target whiteness increase value input in advance via the input operation section 20e.

[0049] 5, the storage unit 20g stores the priorities for controlling the first rice-milling adjusting mechanism 11A, the second rice-milling adjusting mechanism 11B, and the third rice-milling adjusting mechanism 11C in a control priority table T1. For example, in this embodiment, the second rice-milling adjusting mechanism 11B is set to the highest priority, and the first rice-milling adjusting mechanism 11A is set to the lowest priority.

[0050] The judgment unit 20h compares the measured whiteness value obtained by the third whiteness measuring device 12C or the whiteness increase value obtained by calculation in the calculation unit 20f with a target set value stored in advance in the memory unit 20g to judge whether the rice grains are in the target polished state.

[0051] When the judgment unit 20h judges that the rice is not in the target polished state, i.e., the preset whiteness value or the preset whiteness increase value, the base unit 20c of the main control panel 20C controls at least one of the first rice polishing adjustment mechanism 11A, the second rice polishing adjustment mechanism 11B and the third rice polishing adjustment mechanism 11C to change the position of the resistance cover 18 and change the resistance force applied to the rice grains.

[0052] Specifically, when the judgment unit 20h judges that the rice grains are not in the target polished state, the board unit 20c of the master control panel 20C controls the second slave control panel 20B corresponding to the second rice-milling adjusting mechanism 11B, which has the highest priority based on the control priority table T1. That is, when the judgment unit 20h judges that the rice grains are not in the target polished state, the board unit 20c of the master control panel 20C controls the second rice-milling adjusting mechanism 11B, which has the highest priority based on the control priority table T1, and then, if the target polished state is not achieved even after controlling the second rice-milling adjusting mechanism 11B, it controls the third rice-milling adjusting mechanism 11C, which has the next highest priority, to bring the rice closer to the target polished state.

[0053] As described above, according to the embodiment of the present invention, the first rice-milling adjusting mechanism 11A, the second rice-milling adjusting mechanism 11B, and the third rice-milling adjusting mechanism 11C, which adjust the milling state of rice grains in the first discharge passage R1, the second discharge passage R2, and the third discharge passage R3, respectively, are controlled by an add-on control means 40 that is attached separately from the main control panel 5 that controls the rice milling operation of the rice milling equipment 10. This eliminates the need to change the control specifications of the main control panel 5 that controls the rice milling operation of the rice milling equipment 10 when the rice grain whiteness adjusting device 1 is introduced, and the only improvement required for the existing rice milling equipment 10 is to modify the first rice-milling adjusting mechanism 11A, the second rice-milling adjusting mechanism 11B, and the third rice-milling adjusting mechanism 11C to have structures suitable for automation. Therefore, since the improvement of the rice milling equipment 10 can be kept small, the time spent on improving the rice milling equipment 10 can be shortened and the cost of the improvement can be kept low.

[0054] Furthermore, in each of the first whiteness adjusting unit 6, the second whiteness adjusting unit 7, and the third whiteness adjusting unit 8, the display monitors 20b that input the target whiteness setting value and display the measured whiteness values, etc., are integrally provided on the surface of the case portion 20a that houses the substrate portions 20c that control the first rice-milling adjusting mechanism 11A, the second rice-milling adjusting mechanism 11B, and the third rice-milling adjusting mechanism 11C, respectively. This eliminates the need to provide the display monitors 20b separately, and allows the entire rice grain whiteness adjusting device 1 to have a compact structure.

[0055] Furthermore, in the case of equipment in which rice grains are polished by sequentially performing the polishing operation using a plurality of first rice polishers 2, second rice polishers 3, and third rice polishers 4, as in the embodiment of the present invention, rather than simultaneously controlling all of the first rice polishing adjustment mechanism 11A, second rice polishing adjustment mechanism 11B, and third rice polishing adjustment mechanism 11C, control is performed in order starting with the second rice polishing adjustment mechanism 11B, which can effectively bring the whiteness of the rice grains closer to the target set value, thereby eliminating unnecessary operations of the rice grain whiteness adjustment device 1 and enabling efficient rice polishing adjustment.

[0056] Furthermore, since the first sub control panel 20A, the second sub control panel 20B, and the main control panel 20C are provided in the first rice polisher 2, the second rice polisher 3, and the third rice polisher 4, respectively, and the first rice polishing adjusting mechanism 11A, the second rice polishing adjusting mechanism 11B, and the third rice polishing adjusting mechanism 11C are provided in the first rice polisher 2, the second rice polisher 3, and the third rice polisher 4, respectively, it becomes possible to make the configuration of the rice grain whiteness adjusting device 1 installed in the first rice polisher 2, the second rice polisher 3, and the third rice polisher 4 approximately the same. Therefore, there is no difference in the installation work for each of the first rice polisher 2, the second rice polisher 3, and the third rice polisher 4, and therefore improvements to the rice polishing equipment 10 can be made easily.

[0057] In the embodiment of the present invention, the rice grain whiteness adjusting device 1 is applied to a multi-seat rice polisher, but it can also be applied to a rice polishing facility 10 consisting of a single rice polisher.

[0058] Furthermore, in the embodiment of the present invention, when whiteness adjustment is performed, the master control panel 20C outputs a whiteness adjustment signal to the first slave control panel 20A and the second slave control panel 20B, and the first slave control panel 20A and the second slave control panel 20B control the first rice milling adjustment mechanism 11A and the second rice milling adjustment mechanism 11B based on that signal. However, the master control panel 20C may also be configured to directly control the first rice milling adjustment mechanism 11A and the second rice milling adjustment mechanism 11B.

[0059] Furthermore, in the embodiment of the present invention, the master control panel 20C controls the first rice milling adjustment mechanism 11A, the second rice milling adjustment mechanism 11B, and the third rice milling adjustment mechanism 11C in order of decreasing priority based on the control priority table T1, but may be configured to simultaneously control two or more of the first rice milling adjustment mechanism 11A, the second rice milling adjustment mechanism 11B, and the third rice milling adjustment mechanism 11C.

[0060] Furthermore, in the embodiment of the present invention, the parent control panel 20C of the third rice polisher 4, which is located at the most downstream of the rice polishing equipment 10, controls the first child control panel 20A and the second child control panel 20B of the first rice polisher 2 and the second rice polisher 3, but the control panel attached to the first rice polisher 2 or the second rice polisher 3 may be configured as the parent unit and the control panels attached to the other rice polishers may be configured as child units.

[0061] In addition, in the embodiment of the present invention, the communication means 30 between the parent control panel 20C and the first and second child control panels 20A and 20B is a wireless communication means such as Wi-Fi or Bluetooth, but communication between them may also be performed using a wired communication means.

[0062] In addition, in the embodiment of the present invention, the display monitor 20b provided on the surface of each case part 20a of the first sub-control panel 20A, the second sub-control panel 20B and the main control panel 20C is a touch panel type, but it does not have to be a touch panel type, and may be structured so that various operations displayed on the display monitor 20b are performed using operation buttons attached to the case part 20a. [Industrial Applicability]

[0063] The present invention is suitable for a rice grain whiteness adjusting device for use in rice milling equipment, which applies resistance to rice grains discharged from a rice mill to adjust the whiteness of the polished rice to a desired level. [Explanation of symbols]

[0064] 1 Rice grain whiteness adjustment device 2 1st rice polishing machine 3 2nd rice milling machine 4 3rd rice milling machine 5 Main control panel 10 Rice milling equipment 11A 1st rice polishing adjustment mechanism (rice polishing adjustment means) 11B 2nd rice polishing adjustment mechanism (rice polishing adjustment means) 11C Third rice polishing adjustment mechanism (rice polishing adjustment means) 12A 1st whiteness measuring device (whiteness measuring means) 12B 2nd whiteness measuring device (whiteness measuring means) 12C 3rd whiteness measuring device (whiteness measuring means) 18 resistance lid 20A 1st sub-control panel 20B Second sub-control panel 20C Main control panel 20a Case part 20b Display monitor 20c board part 20d Data display section 20e Input operation section 30 Means of communication 40 Retrofit control means R1 1st discharge passage R2 2nd discharge passage R3 3rd discharge passage S1 Polishing Room T1 Control Priority Table

Claims

1. A rice grain whiteness adjusting device for a rice milling facility, comprising at least one rice milling machine having a main control panel for controlling rice milling operations and a discharge passage for discharging milled rice grains from a milling chamber, a rice-milling adjusting means for adjusting the polishing state of the rice grains in the polishing chamber by changing the position of a resistance cover blocking the discharge passage to change the resistance force applied to the rice grains passing through the discharge passage; and a whiteness measuring means for measuring the whiteness value of rice grains; a retrofit control means connected to the rice milling adjustment means and the whiteness measurement means and configured separately from the main control panel; The rice milling equipment includes, as the rice milling machines, a first rice milling machine that grinds the surface of raw brown rice, a second rice milling machine that frictionally treats the surfaces of the rice grains that have been ground by the first rice milling machine, and a third rice milling machine that polishes the surfaces of the rice grains that have been frictionally treated by the second rice milling machine, the rice milling adjustment means and the whiteness measurement means are provided in the first rice milling machine, the second rice milling machine, and the third rice milling machine, respectively; The retrofit control means The control priority table is configured to store in advance the priority of the rice milling adjustment means, with the rice milling adjustment means of the second rice milling machine being set to have the highest priority, A rice grain whiteness adjusting device for rice milling equipment, characterized in that when it is determined that the rice grain is not in the target polished state by comparing the measured whiteness value obtained by the whiteness measuring means of the third rice milling machine, or the whiteness increase value obtained by calculation based on the measured whiteness value, with a preset target set value, the rice milling adjusting device controls the rice milling adjusting means in order of priority based on the control priority table, changing the position of the resistance cover to change the resistance force applied to the rice grain.

2. The rice grain whiteness adjusting device for rice milling equipment according to claim 1, the retrofit control means comprises a case part having a display monitor on its surface, and a substrate part disposed inside the case part and connected to the rice polishing adjustment means and the whiteness measurement means, The substrate unit is characterized in that it is equipped with an input operation unit that displays a target setting value on the display monitor so that the target setting value can be input, and a data display unit that displays the measured whiteness value or the whiteness increase value.

3. The rice grain whiteness adjusting device for rice milling equipment according to claim 1, The add-on control means includes a master control panel that controls one of the rice milling adjusting means, and at least one slave control panel that controls the rice milling adjusting means other than the rice milling adjusting means controlled by the master control panel, the slave control panel is connected to the master control panel via a communication means; The parent control panel stores the control priority table, and when it determines that the rice grains are not in a target polished state, it controls the parent control panel and the child control panel corresponding to the rice polishing adjustment means with a higher priority based on the control priority table.

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