JP3755531B2 - Kazuri Rice Mill Facility - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a rice milling facility that can make rice bran and brown rice into rice milled rice or brown rice.

  Conventionally, when rice bran / brown rice, etc. is introduced and the type of grain and the degree of milling are selected with the selection buttons such as “籾”, “brown rice”, etc., the rice milling / brown rice milling work or brown rice milling work is started, The rice milling facility that is discharged in this way is known. In addition, regarding the sensor for discriminating the type of grain, an optical sensor that irradiates the grain with light and discriminates the type of grain based on the amount of light reflected or transmitted from the grain is mainly used. Used in machines and color sorters.

  Some workers are not accustomed to using the facility. When such people use the facility, there is an erroneous operation such as selecting the “籾” button regardless of whether the input grain is brown rice or selecting the “brown rice” button regardless of whether the input grain is rice cake. appear. Then, in the former case, the brown rice that has been thrown in is crushed and broken rice may be generated. In the latter case, since the introduced rice bran is supplied to the rice milling apparatus without going through the rice straw process, unmilled rice is generated or clogging occurs due to a large amount of rice husk generated in the milling chamber.

Therefore, a grain supply unit provided with a discriminating sensor for discriminating between the rice hull portion, the cereal portion, and the rice bran / brown rice is provided in the cereal indoors, and when the discriminating sensor determines that the supplied grain is cocoon, It was set as the grain refiner comprised so that a grain might be conveyed to a cereal part, without carrying out a rice mash, when a grain was conveyed to a cereal part after it was crushed in a sliding part and it was judged to be brown rice (patent document 1).
Japanese Utility Model Publication No. 62-31939

  However, in the configuration of the above-mentioned Patent Document 1, it is not clear whether or not the rice bran / brown rice discrimination is entered at that time, and discrimination may occur when there is no grain, and it is easy to fall into discrimination.

  On the other hand, when the optical sensor as described above is used for discriminating grains in the rice milling apparatus, dust and the like from the grains adhere to the glass surface of the sensor, so that the discrimination accuracy is lowered in a short period of time. In the present invention, it is possible to provide a rice milling rice facility that can prevent troubles caused by erroneous operation of the selection buttons for rice bran and brown rice in the above, and can prevent the discrimination accuracy of rice bran and brown rice from being lowered in a short period of time. Objective.

  The following technical measures were taken to solve the conventional problems. That is, a rice huller equipped with a pair of rice hull rolls, a rice milling device, a grain sensor provided in the grain input unit, and the presence / absence of grains based on the amount of change in capacitance in the grain sensor A discrimination means for discriminating brown rice, and a rice mill rice mill facility provided with a control means for performing rice bran polishing work when the discrimination means discriminates rice, and when brown rice is discriminated. When the control means discriminates the rice bran roll, the gap between the hulling rolls is adjusted and set to a predetermined initial gap, and when the control means discriminates the brown rice, the hulling roll is opened and the hulling work is performed. It is set as the structure of the rice-milling rice mill structure set as the structure which controls the roll clearance adjustment motor adjusted and set to pass without performing.

  If comprised as mentioned above, when a grain is thrown into a rice milling rice plant | facility, an electrostatic capacitance will change within a grain sensor. Then, based on the amount of change in the electrostatic capacity, the discriminating unit discriminates the presence / absence of grain and the rice bran / brown rice. Then, when the discriminating means discriminates the rice bran, drive control is performed so that the rice milling operation is performed, and when the brown rice is discriminated, the brown rice milling operation is performed.

  According to the present invention, it is possible to perform the rice milling work or brown rice polishing work after automatically determining whether the input grain is rice bran or brown rice, thus preventing troubles caused by the operator's erroneous operation. be able to. Further, the so-called proximity sensor of the capacitance type is more resistant to grain dust than the optical sensor, and the discrimination accuracy is not lowered in a short period of time.

  The overall structure of the rice milling facility in the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a building where a rice milling rice plant is installed, and the interior is divided into an operation room Y and a machine room Z by a partition wall 1. On the operation chamber Y side, a raw material charging hopper 2, an operation panel 3, a white rice tank 4 and the like are provided, and on the machine chamber Z side, a feed trough 5, a rice straw elevator 6, a rice mill device A, a rice mill elevator 7, a rice mill An apparatus C, a wrinkle processing unit D, and the like are provided.

  As shown in the operation process diagram of FIG. 2, a grain bag holder 8 and a raw material charging hopper 2 are respectively arranged on the operation chamber Y side toward the machine room Z side. A grain sensor M is provided on the grain input surface, and a supply basket 5 in which a supply spiral 9 is provided is provided below the raw material input hopper 2. In addition, as shown in FIG. 2, the transfer terminal side of the supply basket 5 communicates with the hopper 6a of the hulling elevator, and the upper part of the hulling elevator 6 faces the storage tank 10 of the hulling section.

  In the hulling device A, the storage tank 10 and hulling rolls 11a and 11b are arranged from above, and further, under the hulling device A, a wind selection unit B and a stone remover E are arranged. (See FIG. 3). The hulling rolls 11a and 11b are configured as a pair and are respectively driven to rotate in the reverse direction, and one hulling roll 11b is closer to the other hulling roll 11a. It is movable. That is, the hulling roll 11b is supported by the derivative 13 as shown in FIG. 4, and the roll lacan 14 screwed into the tip end side of the derivative 13 is connected to the roll clearance control motor 15. By reverse rotation, it is possible to move to and from the fixed side hull roller 11a and adjust the roll gap (see FIG. 4).

  Wind selection section B falls from wind culm 16 and wind-rolling rolls 11a and 11b, the first passage 17 through which wind and brown rice in the wind-sorted crushed rice passes, It is comprised from the cocoon 18, the dust exhaust cylinder 19 etc. which fly the wind-sorted rice husk to the rice husk tank F (refer FIG. 2). The stone remover E is composed of a swing sorting plate 20 disposed at an inclination, a blower fan (not shown) disposed below the swing sorting plate 20, and a discharge port 20a on the swing side of the swing sorting plate 20. Is communicated with the hopper portion 7a of the rice lift 7. And the upper part of the rice lifting machine 7 is made to face the brown rice tank 22 of the rice polishing apparatus C (refer FIG. 2).

  The rice milling device C is provided with a brown rice tank 22 and a milled portion F from above, and the milled portion F is a well-known form in which a milled roll 24 is provided in a milled platinum net 23. The exit side of the milling section F communicates with the white rice tank 4 so that white rice can be taken out from the operation room side Y. In addition, the rice bran generated in the rice milling operation is conveyed to the rice bran processing unit G by the rice bran conveying fan 25 (see FIG. 5).

  The soot processing unit G includes a cyclone 26, a soot transport spiral 27 for horizontally transporting soot that has fallen from the cyclone 26, a soot transporter 29 that houses the soot transport spiral 27, and soot bags 30 and 30 (FIG. 1). (See FIG. 2). By the way, as shown in FIG. 6, the operation panel 3 on the operation room side has a coin amount indicator light 41, a coin mech 42, a mochi button 43, whiteness selection buttons 44, 44 and 44 (this embodiment). Now, you can choose from three levels: white, standard, and 8 parts). A fee table 45 and the like are provided. The coin mech 42 includes an inserted coin identifying unit (not shown), a coin sensor 47 that operates for each inserted coin, and the like. The operation panel 3 is provided with a control unit V based on a sequence for controlling the driving of each unit driving motor.

  As shown in FIG. 7, the CPU 46 of the control unit V has detection information from the coin sensor 47, whiteness selection information from the whiteness selection buttons 44, 44, 44, input information from the glutinous button 43, hulling A load current signal or the like by the load current detection sensor 48 of the apparatus driving motor 50 is input through the input interface 46a. On the other hand, the output includes a control signal to the supply spiral drive motor 49, a drive signal to the hulling device drive motor 50, a roll opening / closing command signal to the roll clearance adjusting motor 15, and a rice milling device. A control signal to the drive motor 53, a control signal to the whiteness adjustment motor 54, a coin withdrawal actuator 47a, and the like are output via the output interface 46b.

  The grain sensor M is a capacitive proximity sensor that changes its capacitance when an object is present near the sensor detection surface. When the capacitance changes, the change amount is input to the discrimination circuits P and Q, and the contact points p and q with contact or non-contact are turned on based on the change amount in the discrimination circuit P and Q. And the result of ON of these contact points p and q is input into CPU46 via the input interface 46a, and the presence or absence of grain and the discrimination | determination of rice bran and brown rice are made. Moreover, in this Embodiment, although it has comprised so that the presence or absence of a grain and the rice bran and brown rice may be discriminate | determined by one detection surface M1, the detection surface which detects the presence or absence of a grain and a grain are discriminate | determined. A plurality of detection surfaces may be provided separately from the detection surface.

  Next, the operation of the embodiment will be described with reference to FIGS. First, coins or the like to be charged are inserted into the insertion slot of the coin mech 42 (S100), and then the grain is introduced into the raw material introduction hopper 2 (S101). Finally, one of the whiteness selection buttons 44, 44 and 44 is selected (S102), and the whiteness is set.

  During this time, the grain put into the raw material feeding hopper 2 is accumulated in the vicinity of the detection surface M1 of the grain sensor M, and the capacitance of the detection surface M1 in the grain sensor M changes. Then, the amount of change in the capacitance of the detection surface M1 is input to the discrimination circuits P and Q, respectively. Therefore, in the discrimination circuit P, the contact point p is turned on when a change amount equal to or greater than the predetermined value R in FIGS. 8 and 9 is detected, and in the discrimination circuit Q, the contact point q is turned on when a change amount greater than the predetermined value S is detected. It is supposed to be. Then, the signals when these contacts are turned on are input to the CPU 46 via the input interface 46a, and the presence / absence of grains and the determination of rice bran / brown rice are made according to the table of FIG. That is, when the contact point p of the determination circuit P is turned on, it is determined that there is a grain (S103), and when the contact point q of the determination circuit Q is also turned on, it is determined as brown rice. Further, when the contact point p of the determination circuit P is turned ON and the contact point q of the determination circuit Q is OFF, it is determined that the contact point is 籾. In addition, it has been found through experiments that brown rice has a larger amount of capacitance change than rice bran.

  As shown in FIG. 8, when the change amount of the electrostatic capacitance is detected between R and S, it is determined as 籾 (S104). When the discriminating circuit N detects that there is a grain and it is a cocoon at the same time, the coin sensor 47 reads the number of coins inserted into the coin mech 42 and calculates the operation time, and the supplied spiral drive motor 49 over the calculation time. A drive signal is output to each part of the device in the facility such as the hulling device 50.

  As a main driving sequence, first, the roll gap initial setting control means is operated to set the gap between the hulling rolls 11a and 11b to a gap where the hulling work is possible (S105). Next, the rice huller A and the stone remover E (S106), and then, after a predetermined time has elapsed, the rice huller elevator 6 and the rice milling elevator 7 (S107), the supply spiral 9 (S108), and the rice milling device C (S109) are sequentially activated. As a result, the rice milling operation starts (S110). Here, the control contents of the roll gap initial setting control means of the hulling rolls 11a and 11b will be described. First, the roll gap adjusting motor 15 is driven, and the hulling rolls 11a and 11b are driven. When the roll clearance of 11b is adjusted to open and the load current detection sensor 48 no longer detects a change in the load current value, it is determined that the hulling rolls 11a and 11b are in a non-contact state, and the opening adjustment is stopped. . Next, the roll clearance is adjusted to close, and when the load current detection sensor 48 detects an increase in the load current value and determines that the pallet rolls 11a and 11b are in slight contact, the close adjustment is stopped. Next, the roll gap is adjusted to open over a predetermined time, and the roll gap is adjusted to a predetermined initial gap (for example, 7 mm). When initial gap setting control of the hulling rolls 11a and 11b is performed, hulling work is performed in the gap.

  When the rice milling work is started, the rice cake put into the raw material charging hopper 2 is conveyed to the rice cake elevator 6 by the supply spiral 9 in the supply basket 5, cerealed by the rice cake elevator 6, and the rice cake in the storage tank 10 is left as it is. It is dropped into the hulling rolls 11a and 11b and is hulled by the hulling rolls 11a and 11b which are already driven in a state where the hulling work is possible. The rice cakes crushed by the rice cake rolls 11a and 11b are subjected to wind sorting by the tang rice cake 15 and the rice cake and brown rice fall into the first receiving rice cake 17 and supplied to the stone remover E. The hail falls to the second receiving hanger 18, is returned to the reducing port of the hull lift 6b, and is again subjected to hulling / winding action.

  The sliding rice supplied to the stone remover E is oscillated and sorted by the oscillating sorting plate 20. Therefore, stones or the like mixed in the sliding rice moves to the upper side of the sorting plate, is discharged from the stone removal discharge unit 60, and is stored in the storage chamber 61. On the other hand, the crushed rice flows down to the swaying side of the swing sorting plate 20 and is supplied to the rice lifting machine 7 from the grain outlet 20a. The crushed rice that has been cerealed by the rice lifting machine 7 is supplied to the rice milling device C, and the rice husk and the surface cocoon layer are peeled off so as to achieve a milling degree set between the milling roll 24 and the milled platinum net 23. . Then, the polished white rice is conveyed to the white rice tank 4 and can be collected in the operation chamber Y as appropriate. The soot generated during the whitening action is conveyed by air to the soot processing unit S, passed through the cyclone 26, transported in the soot transporting bowl 29 by the soot spiral 27, and collected in the soot bags 30 and 30.

  When the milled rice milling operation of the fed rice bran is finished (S111), the supply spiral 9 is stopped first (S112), the rice hull elevator 6 and the rice mill elevator 7 are delayed for a predetermined time (S113), and then the rice bran is delayed for a predetermined time. The sliding device A and the stone remover E (S114), and the rice milling device C are sequentially stopped (S115), and other parts of the apparatus in the facility are also stopped. As a result of the rice milling work, if the work time does not reach the input amount, the coin withdrawal actuator 47a is operated, and change is returned from the return port (not shown).

  When the change amount of the electrostatic capacitance exceeds a predetermined value S as shown in FIG. 9, the discrimination circuit N detects that the grain is present and brown rice (S116). Then, the opening between the hulling rolls 11a and 11b is adjusted (S117), and the brown rice passes between the hulling rolls 11a and 11b without carrying out the hulling work, and is sent to the wind selector B and the stone remover E. Supplied. Thereafter, the conveyance / milling action to reach the milling machine 7, the milling machine C, and the milled rice tank 4 is the same as that of the rice bran.

  The predetermined values R and S can be set so as to correspond to the varieties and grain shapes of grains by making them variable by the volumes H and I in the operation panel 3. By adopting such a configuration, it is possible to carry out rice milling work or brown rice polishing work after automatically determining whether the input grain is rice bran or brown rice. There is no need to provide a button. Therefore, it is possible to prevent troubles caused by the operator's erroneous operation, that is, generation of unmilled rice and broken rice. In addition, the capacitance type sensor is more resistant to grain dust and the like than the optical sensor, and even when continuously used, the discrimination accuracy does not decrease, and malfunction does not occur in a short period of time.

Overall plan view of the rice milling facility Work process diagram of the rice milling facility The perspective view showing the principal part of invention Cross section of hulling roll Cross section of rice mill Operation panel Block Diagram The figure which shows the amount of change of the electrostatic capacity of the cocoon Diagram showing the amount of change in brown rice capacitance Discrimination table by discrimination means Flow chart

Explanation of symbols

A ... rice milling device, C ... rice milling device, M ... grain sensor, 46 ... CPU

Claims (1)

A rice huller provided with a pair of rice hull rolls, a rice milling device, a grain sensor provided in the grain input unit, the presence / absence of grain based on the amount of change in capacitance in the grain sensor, and rice bran / brown rice And a rice milling machine facility provided with a control means for performing rice mash polishing work when the determination means determines glutinous rice, and when brown rice is determined, When the control means discriminates the rice bran roll, the gap of the hulling roll is adjusted and set to a predetermined initial gap. When the control means discriminates the brown rice, the hulling roll is opened and the hulling work is performed. A rice milling mill facility configured to control a roll gap adjustment motor that is adjusted to pass without performing.

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