JP2004344798A - Non-washing rice manufacturing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a non-washing rice manufacturing apparatus capable of reducing the equipment cost of washing and drying processes performed after non-washing rice processing work is completed and capable of easily performing maintenance. <P>SOLUTION: The non-washing rice manufacturing apparatus is equipped with a milling part 4 having a feeder for raw material cleaned rice and performing the stirring and milling of cleaned rice, which is supplied by the feeder, and water by the feed screw and stirring blades provided in a cylindrical body, a centrifugal dehydration part 7 for dehydrating grains of rice and water supplied from the milling part 7 by the dehydration screw provided in a dehydration cylinder, a tempering part 8 for tempering grains of rice supplied from the centrifugal dehydration part 7 by dehumidified drying air to finish non-washing rice and a dehumidifying and drying part 9 for feeding the dehumidified drying air to the tempering part 8. A manual clamping type connection means is provided to the joining part for connecting the milling part 4 and the centrifugal dehydration part 7 not only to form the milling part 4 and the centrifugal dehydration part 7 in an easily separable state but also to connect the supply part of the centrifugal dehydration part 7 separated from the milling part 4 to the drying duct 52 branched from the air discharge passage of the tempering part 8. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a non-washed rice manufacturing apparatus of the type in which polished rice is milled in water using water, and in particular, a non-washed rice that can reduce the equipment cost of a washing and drying process performed after the completion of a non-washed rice processing operation. It relates to a manufacturing device.
[0002]
[Prior art]
Conventionally, the applicant has provided a supply section of milled rice at one end of a cylindrical body and a rice discharge section at the other end, and transported the milled rice and water underwater while transporting the milled rice and water by a transport screw provided on a supply side in the cylindrical body. There has been proposed a non-washing rice manufacturing apparatus in which rice is polished and the rice discharging portion side of a cylinder is formed in a centrifugal dewatering section to centrifugally dehydrate rice (for example, see Patent Document 1).
[0003]
[Patent Document 1] JP-A-11-42056
In the non-washing rice manufacturing apparatus provided with the conveying screw in the above-described cylinder, there is a risk that rice or bran may stick to the inner wall of the cylinder of the submerged milling unit or the centrifugal dewatering unit. It is necessary to wash the underwater milling section and the centrifugal dewatering section with water at the end of the work, and then dry. This washing / drying step will be described with reference to FIG.
[0005]
FIG. 7 is a schematic diagram illustrating the internal configuration of the rice-free rice production apparatus. The non-washed rice production apparatus 100 includes a milling unit 101 for mixing and stirring milled rice with water and milling in water, a rice grain supply device 102 for supplying rice grains to the milling unit 101, and a supply for charging milled rice as a raw material. A hopper 103, a centrifugal dewatering unit 104 for centrifugally dewatering the polished rice discharged from the milling unit 101, a finishing machine 105 for conditioning rice grains discharged from the centrifugal dewatering unit 104, and a refining machine 105 for the finishing machine 105 A finishing fan 106 for supplying air, a heat exchanger 107 and a heater 108 for adjusting the temperature of the conditioned air, and a sorting machine for removing fine particles mixed in the refined product (non-washed rice) discharged from the finishing machine 105. And a device 109. Reference numeral 110 denotes a blower fan used in the washing / drying process at the end of the washing-free rice processing operation, and reference numeral 111 denotes a heater for heating the air supplied to the blower fan 110.
[0006]
In the washing / drying process after the end of the non-washing rice processing, first, the rice grain supply device 102, the milling unit 101, and the centrifugal dewatering unit 104 are driven. Supplies water at a rate of 5 liters / min and supplies, for example, water at a flow rate of 1 liter / min into the centrifugal dewatering unit 104, performs washing for about 5 minutes, and then drains the wash water. . When the washing is completed, water is supplied to the milling unit 101 and the centrifugal dewatering unit 104 again, and the inside of the machine is rinsed for about 10 minutes. When the rinsing is completed, the heater 111 and the blowing fan 110 are turned on, and the inside of the apparatus is dried for about 40 minutes. When the drying is completed, the driving of the rice grain supply device 102, the milling unit 101, and the centrifugal dewatering unit 104 is stopped, and the washing / drying process is completed.
[0007]
However, in the apparatus for manufacturing rice without washing as described above, it is necessary to provide a dedicated blower fan 110 and a heater 111 for use in the washing and drying steps, and the facility cost of the washing and drying steps becomes high. there were. Further, the connection between the discharge side of the rice grain supply device 102 and the supply side of the milling unit 101, and the connection between the discharge side of the milling unit 101 and the supply side of the centrifugal dewatering unit 104 are performed by the flange 112 and the flange 113. Is fastened by bolts 114 and nuts 115 (see FIG. 8), and if a tool such as a spanner or a ratchet wrench is not used, it is difficult to disassemble and maintenance is difficult.
[0008]
[Problems to be solved by the invention]
In view of the above problems, the present invention reduces the equipment cost of the washing / drying process performed after the completion of the operation of the rice-free washing process, and provides a rice-free rice manufacturing apparatus capable of easily performing maintenance. I do.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, the invention of claim 1 has a supply device for raw rice, and the milled rice and water supplied by the supply device are stirred by a transport screw and a stirring blade provided in a cylinder, A milling unit for milling, a centrifugal dewatering unit for dewatering the rice grains and water supplied from the milling unit by a dewatering screw provided in a dewatering cylinder, and rice-free washing of the rice grains supplied from the centrifugal dewatering unit by dehumidifying and drying air. And a dehumidifying and drying unit for supplying dehumidified and dried air to the refining unit, wherein the milling unit and the centrifugal dewatering unit are joined. In the part, the grinding unit and the centrifugal dewatering unit are provided so as to be easily separable by providing a hand-tight coupling means, a supply unit of the centrifugal dewatering unit separated from the grinding unit, and the refining unit. Can be connected to a drying duct that branches from the exhaust path That, took the technical means that.
[0010]
Thereby, in the washing / drying step after the end of the washing-free rice processing, the loosening unit and the centrifugal dewatering unit can be easily separated by loosening the hand-tight coupling means by hand, and the supply side of the centrifugal dewatering unit By connecting the drying duct, it becomes possible to supply the dehumidifying and drying air used in the refining unit to the inside of the centrifugal dewatering unit, and it is not necessary to provide a dedicated blower fan and a heater, thereby reducing equipment costs. be able to.
[0011]
Further, in the invention of claim 2, a joint between the milling unit and the centrifugal dewatering unit is formed by a milling cylinder covering the stirring blades of the milling unit and a receiving cylinder serving as a supply unit of the centrifugal dewatering unit. Therefore, the milling unit and the centrifugal dewatering unit can be separated only by removing simple parts such as the milling cylinder and the receiving cylinder. In addition, it is also possible to expose and inspect the stirring blades by disassembling the milling cylinder of the milling unit.
[0012]
Furthermore, in the invention of claim 3, since the connecting means is a three-division type clamp band capable of giving an even tightening force, troubles such as water leakage due to poor connection between the milling cylinder and the receiving cylinder can be prevented. Can be prevented.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a schematic perspective view of an apparatus for producing non-washed rice according to an embodiment of the present invention, FIG. 2 is a front view in which a part of the apparatus for producing non-washed rice is cut away, and FIG. FIG. 2 is a schematic vertical sectional view showing the internal configuration of the device.
[0014]
1 to 3, a rice-free rice manufacturing apparatus 1 of the present invention has an outer shell formed by placing an upper machine frame 3 containing a control unit and the like on a substantially closed lower machine frame 2. The upper machine frame 3 includes a milling unit 4 for mixing and stirring the milled rice with water and milling in water, a rice grain supply device 5 for supplying rice grains to the milling unit 4, and a supply hopper for feeding milled rice as a raw material. A centrifugal dewatering unit 7 for centrifugally dewatering the milled rice discharged from the milling unit 4 is mounted on the lower machine frame 2, and a refinement of the milled rice from the centrifugal dewatering unit 7 is performed. A dehumidifying / drying unit 9 for feeding dehumidifying / drying air to the tempering unit 8 and the tempering unit 8 is accommodated in the lower machine frame 2. Reference numeral 10 denotes an intake box that takes in outside air into the dehumidifying and drying unit 9.
[0015]
The milling unit 4 (see FIG. 2) includes a milling cylinder 13 formed with a rice grain supply port 11 at an upper part and a rice grain discharge port 12 at a lower end, a rice grain supply device 5 for supplying rice grains to the milling cylinder 13, A milling shaft 14 rotatably supported in a cylinder 13, a stirring unit 17 in which a screw 74, a first stirring blade 15 and a second stirring blade 16 are mounted on the milling shaft 14, and water is poured into the milling cylinder 13. The main configuration is a water supply device 18 connected to a water supply pipe 75 (see FIG. 4) for supplying.
[0016]
The rice grain supply device 5 that supplies the rice grains to the milling cylinder 13 includes a horizontal-axis transport screw 19 that feeds the rice grains to the milling cylinder 13, a conveyor case 20 that covers an outer periphery of the horizontal axis transport screw 19, and a rotation of the transport screw 19. And a driving motor 21. Opening and closing means such as a shutter may be appropriately provided between the conveyor case 20 and the supply hopper 6.
[0017]
The centrifugal dewatering unit 7 has a rotatable dewatering cylinder 23 partially formed in the porous wall 22, a dewatering shaft 24 rotatably supported in the dewatering cylinder 23, and is mounted on the dewatering shaft 24. The dewatering screw 25 is a main component, and the centrifugal force generated by the rotation of the dewatering screw 25 and the centrifugal force generated by the rotation of the dewatering cylinder 23 cause the washing drainage to be discharged from the porous wall 22 provided in the dewatering cylinder 23. Become.
[0018]
The refining unit 8 and the dehumidifying / drying unit 9 (see FIG. 3) are housed in the substantially closed lower machine frame 2. The lower machine frame 2 is provided with an intake box 10 for taking in outside air and a rice grain. An exhaust box 26 is provided for discharging the conditioned wet air out of the machine. The refining unit 8 housed on the exhaust box 26 side of the lower machine frame 2 includes a net 28 formed rotatably by a motor 27, a suction fan 29 for generating a suction wind downward on the entire surface of the net 28, A main part is constituted by a supply cylinder 30 for supplying the refined rice from the centrifugal dewatering unit 7 onto the net 28 and a discharge gutter 31 for discharging the conditioned product (non-washed rice). Reference numeral 32 denotes a motor for driving the suction fan 29. When the motor 32 and the suction fan 29 are connected via a V-belt 33, the suction fan 29 can be driven.
[0019]
Above the net 28 of the refining unit 8 is open, the dehumidified air from the dehumidifying and drying unit 9 is taken in to refinish the rice grains, and the reconditioned moist air is passed through a funnel-shaped suction duct. The air is exhausted outside the machine via the suction fan 29, the exhaust duct 35 and the exhaust box 26. The discharge duct 35 is provided with an in-machine drying duct 52 for branching the drying air used in the washing / drying process, and the in-machine drying duct 52 extending on the lower machine frame 2 is provided. An on-off valve 53 is provided. Further, an in-machine drying duct 52 is connected to a bellows tube 54 which can be expanded and contracted, and a joint 55 is provided for connecting to a supply side of the centrifugal dewatering unit 7.
[0020]
The exhaust box 26 is provided with an exhaust hole 49 on a rear surface thereof, a filter 50 for collecting crushed rice and rice flour therein, and a receiving box 51 for collecting crushed rice and rice flour. .
[0021]
On the other hand, the dehumidifying and drying unit 9 housed on the side of the intake box 10 in the lower machine frame 2 is entirely covered with an outer shell 36, and a compressor 37 and a drain tank 38 are housed inside the outer shell 36. ing. The drain tank 38 is configured to be able to be taken out from the outer shell 36. A cooler 39 and a condenser 40 serving as a refrigerating cycle are provided above the drain tank 38. At the same time, and flows down to the drain tank 38. The present invention is not limited to this, and it is also possible to provide a drain pipe for directly discharging the dew condensation water dropped on the tray 41 to the outside without providing the drain tank 38. Reference numeral 42 denotes a small fan that supplies dehumidified dry air, reference numeral 43 denotes an air suction port to the dehumidifying / drying unit 9, and reference numeral 44 denotes an air discharge port for the dehumidified dry air.
[0022]
Next, the intake box 10 will be described. The intake box 10 has a front surface provided with an intake hole 45 for taking in outside air, and an intake filter 46 for preventing dust and foreign matter from being mixed therein. , And a thermistor 48 for detecting the temperature of the intake air.
[0023]
The intake box 10 includes, for example, twelve rod-shaped electric heaters 47. The electric heaters 47 lie horizontally in the width direction of the intake box 10 (see FIG. 2). When viewed in a vertical cross-section of No. 10, they are arranged in a zigzag manner back and forth (see FIG. 3).
[0024]
The connection between the discharge side of the milling unit 4 and the supply side of the centrifugal dewatering unit 7 according to the present embodiment is to fix the flange part removably by a connecting means, which will be described in detail with reference to FIG. . FIG. 4 is a partially broken view showing the internal structure of the milling unit 4 and the centrifugal dewatering unit 7. The milling cylinder 13 of the milling unit 4 includes a first milling cylinder 13A covering the screw 74, a second milling cylinder 13B covering the first stirring blade 15, and a third milling cylinder 13C covering the second stirring blade 16 in the vertical direction. The flange 56 at the lower end of the first milling cylinder 13A and the flange 57 at the upper end of the second milling cylinder 13B are detachably fixed by connecting means 58. The flange 60 at the upper end of the cylinder 13C is detachably fixed by the connecting means 61, and the flange 62 at the lower end of the third milling cylinder 13C and the flange 64 at the upper end of the receiving cylinder 63 are detachably fixed by the connecting means 65.
[0025]
As the connecting means, any means can be used as long as it can prevent poor connection with the milling cylinders 13A, 13B, 13C and the receiving cylinder 63, but in the present embodiment, a commercially available three-part type manual tightening as shown in FIG. A type clamp band was used (trade name TSG-BS3 manufactured by Toyo Stainless Steel Co., Ltd.). The clamp band is formed into three divided band portions 68, 69, 70 by two fulcrums 66, 67. When the handle 71 is twisted, the male screw portion 72 is screwed into the female screw portion 73 to provide an even tightening force. Can be given.
[0026]
Next, the operation of the rice-free rice manufacturing apparatus having the above configuration will be described. The milled rice supplied from the supply hopper 6 is transported by the transport screw 19 from the rice grain supply port 11 into the milling cylinder 13. The water from the water supply device 18 is added into the milling cylinder 13 by a water supply pipe 75 (see FIG. 4), for example, 10 to 30% by weight based on the milled rice. Then, the polished rice is stirred and polished by the screw 75, the first stirring blade 15 and the second stirring blade 16 in the milling cylinder 13. In the polished rice, the bran generated by the milling is diffused in water, and the milled rice is polished by friction in the water. At this time, the milling precision advances by 0.5 to 2.0% with respect to the polished rice, so that the aleurone layer of the polished rice comes off. The rice grains having been stirred and milled are supplied to the centrifugal dewatering unit 7 from the rice grain discharge port 12 without staying.
[0027]
In the centrifugal dewatering unit 7, the rice grains and water are transported in the horizontal direction by the rotation of the dewatering screw 25 (for example, 2000 rpm). At this time, while the rice grains and water are transported in the horizontal direction, the rotation of the dewatering cylinder 23 (for example, 1700 rpm) The centrifugal force acts on the porous wall portion 22 of the dewatering cylinder 23 to separate the rice grains into water containing bran and aleurone. Then, the dehydrated rice grains are transferred from the supply cylinder 30 to the refining unit 8, and the separated water is transferred to a wastewater treatment facility (not shown) outside the machine to perform wastewater treatment.
[0028]
In the refining unit 7, rice grains are supplied onto the net 28, and the inside of the suction duct 34 becomes negative pressure by suction by the suction fan 29, so that the dehumidifying air from the dehumidifying and drying unit 9 is taken in and refining is performed. Is Then, the refining is completed before the rice grains are guided to the discharge gutter 31 by the rotation of the net 28, and, for example, unwashed rice having a water content of about 15% is discharged from the discharge gutter 31.
[0029]
The non-washed rice is manufactured as described above. Next, the washing and drying steps after the completion of the non-washed rice processing will be described. In the washing / drying step, the rice grain supply device 5, the screw 74 in the milling unit 4, the first stirring blade 15 and the second stirring blade 16, the dewatering screw 25 in the centrifugal dewatering unit 7, and the dewatering cylinder 23 are driven. For example, while supplying water at a flow rate of 5 L / min from the water supply pipe 75 to the milling unit 4, for example, supplying water at a flow rate of 1 L / min to the centrifugal dewatering unit 7 for about 5 minutes. After washing, the washing water is drained. When the washing is completed, water is supplied again to the milling unit 4 and the centrifugal dewatering unit 7, and the inside of the machine is rinsed for about 10 minutes.
[0030]
When the rinsing is completed, the in-machine drying is performed. Prior to drying in the machine, the driving of the rice grain supply device 5, the milling unit 4, and the centrifugal dewatering unit 7 is stopped, and the first milling cylinder 13A, the second milling cylinder 13B, and the second milling unit that connect the milling unit 4 and the centrifugal dewatering unit 7 are connected. The 3C milling cylinder 13C and the receiving cylinder 63 are removed. At this time, since the flanges are fastened by manually tightening the clamp bands 58, 61, 65, if the grip 71 of the clamp band is twisted open by hand, it can be easily disassembled and removed without using a tool. Can be.
[0031]
As shown in FIG. 6, when the first milling cylinder 13A, the second milling cylinder 13B, the third milling cylinder 13C, and the receiving cylinder 63 are removed, the milling unit 4 and the centrifugal dewatering unit 7 can be separated. Further, the milling unit 4 can be disassembled to expose the first stirring blade 15 and the second stirring blade 16. Next, the joint 55 of the in-machine drying duct 52 is connected to the supply port 76 of the centrifugal dewatering unit 7 and the on-off valve 53 is opened. As a result, the dehumidifying and drying air sent from the dehumidifying and drying unit 9 is supplied to the centrifugal dewatering unit 7 via the heat treatment unit 8, the suction fan 29, the in-machine drying duct 52, the bellows pipe 54, and the joint 55, and the in-machine drying is performed. Is performed. In the in-machine drying, the dehumidifying and drying air used in the refining unit 8 can also be used for the in-machine drying, so that it is not necessary to provide a heater and a fan dedicated to the in-machine drying as in the related art, thereby reducing equipment costs. it can.
[0032]
Then, dehumidified dry air is supplied to the centrifugal dewatering unit 7 for about 40 minutes to dry the inside of the apparatus. When the drying is completed, the joint 55 of the in-machine drying duct 52 is removed from the supply port 76 of the centrifugal dewatering unit 7 and the first milling cylinder 13A, the second milling cylinder 13B, and the second milling cylinder 13 are manually tightened by the clamp bands 58, 61, and 65. The washing / drying process is completed by assembling the 3 milling cylinder 13C and the receiving cylinder 63.
[0033]
【The invention's effect】
As described above, according to the present invention, the joining portion that connects the milling unit and the centrifugal dewatering unit is provided with a hand-tight coupling means, so that the milling unit and the centrifugal dewatering unit can be easily separated. And the supply section of the centrifugal dewatering section separated from the milling section, and the drying duct branched from the exhaust air path of the tempering section can be connected, so that the washing and drying step after the completion of the washing-free rice processing In, the loosening unit and the centrifugal dewatering unit can be easily separated by loosening the hand-tight coupling means by hand, and by connecting a drying duct to the supply unit of the centrifugal dewatering unit, the centrifugal dewatering unit It is possible to supply dehumidifying and drying air used in the refining section to the inside, and it is not necessary to provide a blowing fan and a heater dedicated to the washing / drying step, and it is possible to reduce equipment costs.
[0034]
Also, since the joining part between the milling unit and the centrifugal dewatering unit is formed by a milling cylinder covering the stirring blades of the milling unit and a receiving cylinder serving as a supply unit of the centrifugal dewatering unit, The milling unit and centrifugal dewatering unit can be separated by simply removing simple parts such as cylinders. In addition, it is also possible to expose and inspect the stirring blades by disassembling the milling cylinder of the milling unit.
[0035]
Further, since the connecting means is a three-divided clamp band capable of giving an even tightening force, it is possible to prevent problems such as water leakage due to poor connection between the milling cylinder and the receiving cylinder.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view of a rice-free rice production apparatus according to an embodiment of the present invention.
FIG. 2 is a front view in which a part of the washing-free rice production apparatus is partially broken.
FIG. 3 is a schematic longitudinal sectional view showing an internal configuration of a tempering unit and a dehumidifying / drying unit.
FIG. 4 is a partially cutaway view showing the internal structure of the milling unit and the centrifugal dewatering unit.
FIG. 5 is a plan view of a clamp band.
FIG. 6 is an explanatory diagram when in-machine drying is performed in a state where a milling cylinder is removed from a milling unit.
FIG. 7 is a schematic diagram illustrating the internal configuration of a conventional rice-free rice production apparatus.
FIG. 8 is a schematic view showing a milling unit and a centrifugal dewatering unit of a conventional rice-free rice production apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Non-washing rice manufacturing apparatus 2 Lower machine frame 3 Upper machine frame 4 Milling part 5 Rice grain supply device 6 Supply hopper 7 Centrifugal dewatering part 8 Tempering part 9 Dehumidification drying part 10 Intake box 11 Rice grain supply port 12 Rice grain discharge port 13 Milling cylinder 14 Milling shaft 15 First stirring blade 16 Second stirring blade 17 Stirring unit 18 Water supply device 19 Conveyor screw 20 Conveyor case 21 Motor 22 Porous wall 23 Dewatering cylinder 24 Dewatering shaft 25 Dewatering screw 26 Exhaust box 27 Motor 28 Net 29 Suction fan 30 Supply cylinder 31 Discharge gutter 32 Motor 33 V-belt 34 Suction duct 35 Discharge duct 36 Outer shell 37 Compressor 38 Drain tank 39 Cooler 40 Condenser 41 Receiving tray 42 Small fan 43 Air suction port 44 Air discharge port 45 Intake hole 46 Intake filter 47 Electric heater 48 Thermistor 49 Exhaust hole 50 Filter 51 Receiving box 52 Dry inside machine Drying duct 53 Opening / closing valve 54 Bellows pipe 55 Joint 56 Flange 57 Flange 58 Connection means 59 Flange 60 Flange 61 Connection means 62 Flange 63 Receiving cylinder 64 Flange 65 Connection means 66 Support point 67 Support point 68 Band section 69 Band section 70 Band section 71 Handle 72 Male screw part 73 Female screw part 74 Screw 75 Water supply pipe 76 Supply port

Claims (3)

A milling unit that has a supply device for the raw rice and agitates the milled rice and water supplied by the supply device with a conveying screw and a stirring blade provided in the cylinder, and mills the rice.
A centrifugal dewatering unit that dewaters rice grains and water supplied from the milling unit by a dewatering screw provided in a dewatering cylinder,
A refining unit that finishes the rice grains supplied from the centrifugal dewatering unit into non-washed rice by dehumidifying and drying air,
A dehumidifying and drying unit that supplies dehumidified and dried air to the refining unit,
The joining part connecting the milling unit and the centrifugal dewatering unit is provided with a hand-tight connection means to form the milling unit and the centrifugal dewatering unit easily separable,
A non-washing rice production apparatus, wherein a supply unit of a centrifugal dewatering unit separated from the milling unit and a drying duct branched from an exhaust path of the conditioning unit are connectable. 2. The non-washed rice production according to claim 1, wherein a joint between the milling unit and the centrifugal dewatering unit is formed by a milling cylinder that covers the stirring blades of the milling unit and a receiving cylinder serving as a supply unit of the centrifugal dewatering unit. 3. apparatus. The rice-free rice production apparatus according to claim 1 or 2, wherein the connecting means is a three-part clamp band capable of giving an even tightening force.

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