JP2008279333A - Rice polishing facility - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rice polishing facility capable of avoiding defective polishing not meeting a desired polishing degree without causing complexity of the apparatus constitution when the quantity of charged brown rice is less than an appropriate lower limit due to fare shortage. <P>SOLUTION: The rice polishing facility comprises a charge hopper 2 receiving charge of grains, transfer mechanisms 6, 7 receiving the grains from the charge hopper 2 and transferring, and a rice polisher 4 polishing the received grains via the transfer mechanisms 6, 7. The charge hopper 2 is provided with a charge sensor 2b detecting the presence/absence of the charged grains, and a lower limit sensor 2c detecting the charged lower limit amount set as the minimum limit for polishing. The rice polisher 4 is operably controlled under the conditions of detection of the grains by the charge sensor 2b and lower limit sensor 2c. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rice milling facility that takes in grains put into a feeding hopper into a rice mill by a transfer mechanism and mills the received brown rice.

  As shown in Patent Document 1, an input hopper that receives input of grain, a transfer mechanism that takes in and transfers the grain from the input hopper, a rice mill that refines the grain received through this transfer mechanism, and the like Rice milling facilities are known and configured.

In this rice milling facility, the user puts brown rice into the input hopper, and then puts the necessary amount into the toll gate. By polishing the rice and repeating this within the range of the input amount, the input brown rice is polished and can be received from the white rice tank for dispensing. Further, the rice milling machine can perform the rice milling process with the degree of milling according to the user's selection by adjusting and controlling the milling pressure.
JP 2001-29815 A

  However, the above rice milling facility has a lower limit amount of brown rice to ensure sufficient milling pressure in the rice milling machine. The problem of not being able to be obtained was inevitable.

  The problem to be solved is to provide a rice milling facility capable of avoiding defective milling that is less than a desired milling degree without complicating the apparatus configuration. In addition, there has been a problem that a desired degree of milling cannot be obtained even when rice bran is mistakenly introduced into a milling facility dedicated to brown rice and subjected to milling.

  The invention according to claim 1 is an input hopper that receives input of grains such as brown rice, a transfer mechanism that takes in and transfers grains from the input hopper, and a rice mill that refines the grains received through the transfer mechanism In the rice milling facility comprising the above, the input hopper is provided with an input sensor for detecting the presence or absence of input grains and a lower limit sensor for detecting the input lower limit amount set as the minimum level in the milling process. The rice milling machine is controlled and configured to be operable on condition that the detection of the grain by the sensor and the lower limit sensor.

  The brown rice thrown into the throwing hopper is sent to the rice mill by the transfer mechanism within the detection range of the throwing sensor, and the entire amount thereof is subjected to the rice milling process. In this case, it is limited to the case where the lower limit sensor of the throwing hopper detects. The rice mill is in operation.

  According to a second aspect of the present invention, in the configuration of the first aspect, the input sensor is configured to be able to discriminate between rice bran and brown rice, and is configured to control the rice mill so that the rice mill can be operated on condition of detection other than rice bran. Features. The rice milling machine operates only when the grain in the input hopper is not rice cake.

  According to the first aspect of the present invention, when brown rice is put into the feeding hopper, the rice milling machine operates only when there is a detection by the lower limit sensor. It is possible to avoid improper sperm processing that is less than the degree of milling.

  According to the invention of claim 2, in combination with the effect of claim 1, the rice milling machine operates only when the grain in the input hopper is not rice cake, so troubles such as clogging of the rice milling machine when rice cake is introduced It can be avoided.

Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings.
As shown in FIG. 1, a system configuration diagram of one example of the rice milling facility 1 includes an input hopper 2 that receives the input grains, a stone remover 3 that removes and sorts foreign matters such as stones in the brown rice, and brown rice The rice mill 4 is configured by a rice mill 4 for polishing the milled rice, a white rice tank 5 for discharging the milled rice, and a transfer mechanism such as a first elevator 6 and a second elevator 7 that connect the rice mill.

  More specifically, the charging hopper 2 has a rotary valve 2a for quantitatively feeding the input brown rice as a transfer mechanism and is connected to the first elevator 6 and detects the presence of input grains on the side wall of the input hopper. And a lower limit sensor 2c that detects a necessary lower limit amount set as a minimum limit in the fine processing. The input sensor 2b is disposed in the vicinity of the bottom of the input hopper 2 to detect the input residual grains, and the lower limit sensor 2c is provided at a position higher than the input sensor 2b. In addition, the input sensor 2b uses a sensor capable of distinguishing rice bran and brown rice.

  The stone remover 3 prepares for the post-process of the first elevator 6 by a bucket conveyor or the like that discharges the brown rice of the input hopper 2 to the upper side, and the grain received from the first elevator 6 as shown in the configuration explanatory diagram of FIG. It is provided with an inclined perforated plate 3a for selecting grains by vibration wind selection and a recovery part 3b for recovering residual rice at the upper part of the inclination, and the selected brown rice is sent to the rice mill 4, and a stone punching part integrated with the recovery part 3b Foreign matter such as stones separated from 3c is stored in a storage part 3d provided at the lower part of the fuselage.

  The collection unit 3b and the stone extraction unit 3c receive the separated foreign matter in the sorting operation state shown in FIG. 2B, and discharge the foreign matter from the stone removal unit 3c in the sorting end state shown in FIG. 2C. The residual grain is recovered from the recovery unit 3b.

  The rice milling machine 4 is provided for the subsequent processes of the second elevator 7 and the brown rice tank 7a for discharging the grains selected by the stone remover 3 to the upper level, and is configured to be capable of changing the rice whiteness by adjusting the milling pressure. A polished rice discharge passage 4e is provided on the discharge side of the rice milling machine 4 to communicate with the white rice tank 5, a switching valve 4b is provided in the middle of the polished rice discharge passage 4e, and the polished rice is charged into the charge tank 4a by switching the switching valve 4b. It is set as k structure stored in. The charge tank 4a is provided with a rotary feed valve 4c for constant feed, and the milled rice is fed to the second elevator 7.

(Equipment layout)
The internal structure of the rice milling facility 1 is divided into a guest room 1a and a machine room 1b as shown in FIGS. 3 and 4, respectively. 1a is provided with an operation unit 8 to be described later including a charge input unit, and the input hopper 2 and the white rice tank 5 are arranged facing the cabin 1a so that brown rice can be input and white rice can be taken out, respectively. In the machine room 1b, the stone cutter 3 and the white rice tank 5 are connected and arranged in this order from the charging hopper 2 through the first elevator 6 and the stone elevator 3 through the second elevator 7, and further provided with a rice bran storage portion 4s.

(Operation section)
As shown in the sketch diagram of FIG. 5, the operation unit 8 is formed of a charge input unit 8a and a rice mill selection unit 8b. The rice mill selection unit 8b includes “upper white”, “standard”, “eight”, and the like. Whiteness selection buttons 8c to 8e, a “no-wash rice” selection button 8f, and a “take-away” operation button 8g are arranged.

  The milling pressure of the milling machine 4 is controlled in accordance with the whiteness by the whiteness selection buttons 8c to 8e of the milled rice selection unit 8b, and the switching valve 4b is switched by the selection button 8f of “no washing rice” to switch the milling machine 4 Control is made to make two rounds, and the untreated input rice of the input hopper 2 is discharged into the white rice tank 5 including the remaining rice in the process of the stone removing machine 3 and the rice milling machine 4 by the operation button 8g of “take home”.

(Operation control)
In the rice milling facility 1 having the above-described configuration, the remaining rice is zero-operated fully automatically by cooperative control so that the brown rice fed into the feeding hopper 2 is sent to the rice milling machine 4 and the entire amount thereof is milled. In this case, the control is configured so that the rice milling machine 4 operates only when the lower limit sensor 2c of the feeding hopper 2 is detected at the start of the rice milling operation, and when the lower limit sensor 2c is not detected, the operation of the take-out button In order to urge you, please give guidance such as “Please bring home rice that cannot be polished”. In addition, the input sensor 2b is configured to be able to discriminate between rice bran and brown rice, and is configured to control the rice mill 4 so that it can operate on the condition of detection other than rice cake.

  By controlling the operation of each device as described above, the rice milling machine 4 operates only when brown rice is introduced into the introduction hopper 2 and detected by the lower limit sensor 2c. With the simple configuration of 2c, it is possible to avoid a situation in which the amount of introduced brown rice becomes half-finished, resulting in poor polishing. Further, the rice milling machine 4 operates only when the grain in the feeding hopper 2 is not rice bran by the feeding sensor 2b capable of discriminating and detecting rice bran and brown rice, so the rice milling machine 4 is clogged when rice bran is introduced. Such troubles can be avoided.

(Control at the end of milling)
In the case of a rice milling operation that selects the upper white, the standard, and the eighth milling degree, the brown rice in the input hopper is subjected to a whitening process with a rice milling machine after the stone removal process and discharged to the white rice tank. When rice milling progresses and the feed sensor 2b in the feed hopper detects that there is no grain, the rice first elevator, the stone remover, and the second elevator are sequentially stopped, and the brown rice detection sensor 7b detects that there is no grain. After a set time, the rice milling machine is stopped and the rice milling operation is completed.

In addition, when washing-free rice treatment is selected, the milled rice once milled by the rice mill is switched by the switching valve and temporarily stored in the charge tank.
After all the brown rice in the charging hopper has been whitened and stored in the charge tank, the rotary valve of the charge tank starts to be driven and supplied to the second elevator. Washed rice is discharged into the white rice tank.

  In addition, each part of the equipment of the rice milling facility stops when the time for the input fee has elapsed, but when the input sensor is off, the set time is extended to drive and the final brown rice is processed. By stopping, untreated brown rice can be prevented from remaining in the rice milling facility.

(Decoration processing)
When the input sensor 2b discriminates the input grain, the operation pattern is switched to washing-free rice processing, that is, the operation is performed by switching the rice mill 4 by the switching valve 4b so as to make two rounds. It is possible to handle rice bran in a brown rice system that does not have a machine.

  In the present embodiment, the configuration is such that driving of the rice milling operation is started when something other than rice bran is detected, but the configuration may be such that driving of the rice milling operation is started only when brown rice is determined.

(Rinse-free rice treatment)
In order to control the washing-free rice course, the brown rice tank 7a is provided with a full amount detection sensor 7c in addition to the brown rice detection sensor 7b at the exit position. The feed speed of the rotary valve 4c of the charge tank 4a for returning the white rice to the second elevator 7 is set faster than the feed speed of the rotary valve 2a of the charging hopper 2, and if the full amount detection sensor 7c is turned on in the brown rice tank 7a, the By controlling the rotary valve 4c to stop with the lock, the entire amount in the charge tank 4a can be processed.

  Further, the white rice after the polishing has heat and skin wrinkles, so that the wrinkles and white rice easily adhere to the flow path, which blocks the outlet of the rotary valve 4c and makes the flow of the white rice worse. In the conventional control in which the rotary valve 4c is stopped when the minimum operation time + the detection sensor 7b is turned off, there is a problem that the charge tank 4a remains in such a situation.

  In order to solve this problem, when the detection sensor 7b of the brown rice tank 7a is not turned on in the second round of the washing-free rice course, rice cake or white rice is placed in the flow path between the rotary valve 4c of the charge tank 4a and the second elevator 7. Therefore, it is determined that the efficiency is lowered due to the adhesion, so that it is driven longer than the operation time timer of the rotary valve 4c of the conventional charge tank 4a. Further, in the case of the above conditions, a warning is given by a control process for printing as a M signal or displaying a fault on the data printer after the washing-free rice process is completed. In this way, the above problem can be solved.

(Remaining rice treatment)
In a system in which the remaining rice in the process is set to zero to eliminate the contamination of the previous user's remaining rice and only the brown rice that the user has put into the milled rice for the whole amount, the untreated rice in the input hopper 2 is removed. When the user abandons, etc., if the milled rice is stopped halfway, residual rice is generated in all the processes in the machine room. Therefore, the handling of the remaining rice in the process after the stop, such as discharge and disposal, becomes a problem.

In order to solve this problem, the grain in the input hopper 2 is supplied to the first elevator 6 to the rice mill 4 by the operation of the minimum charge input and the take-out button 8g, and the rice mill 4 is a pressure plate for adjusting the whitening pressure. (Not shown) is fully opened, passed through brown rice without applying whitening pressure, and discharged into the white rice tank 5. Thereafter, the control is configured to return the input fee.
With such a control configuration, it is possible to eliminate handling problems such as discharge and disposal of residual rice with a simple configuration without requiring addition of a switching valve for take-out processing.

It is a system configuration diagram showing an example of a rice milling facility. It is the structure explanatory drawing (a) of a stone punching machine, and the operation | movement explanatory drawing (b) (c) of a stone punching part. FIG. It is an internal structure side view. It is a sketch of an operation part.

Explanation of symbols

1 Rice milling facilities 1a Guest room 1b Machine room 2 Input hopper 2a Rotary valve (transfer mechanism)
2b Input sensor 2c Lower limit sensor 3 Stone removal machine 4 Rice milling machine 4a Charge tank 4b Switching valve 5 White rice tank 6 First elevator (transfer mechanism)
7 Second elevator (transfer mechanism)
7a Brown rice tank 7b Brown rice detection sensor 8 Operation part 8c-8e Whiteness selection button

Claims (2)

An input hopper (2) that receives input of grain such as brown rice, a transfer mechanism (6, 7) that takes in and transfers the grain from the input hopper (2), and an input through this transfer mechanism (6, 7) In a rice milling facility equipped with a rice milling machine (4) for scouring fresh grain
The charging hopper (2) includes a charging sensor (2b) for detecting the presence or absence of the input grain, and a lower limit sensor (2c) for detecting a charging lower limit amount set as a minimum level in the milling process, A rice milling facility characterized in that the rice milling machine (4) is controlled to be operable on the condition that the grains are detected by the input sensor (2b) and the lower limit sensor (2c).   The rice milling machine according to claim 1, wherein the input sensor (2b) is configured to be able to distinguish between rice bran and brown rice, and is configured to control the rice milling machine (4) so that the rice milling machine (4) can be operated on condition of detection other than rice bran. Facilities.

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