JP2004321001A - Method for producing wash-free rice and apparatus therefor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for producing wash-free rice by which the stable high-quality wash-free rice can be produced with the degree of debraning equal to that of a water-washing method without requiring a wastewater treatment and to provide an apparatus therefor. <P>SOLUTION: The method for production is to strike polished rice against a hard material, make residual bran remaining on the polished rice stick to the hard material, peel the residual bran from the hard material so as to rub the residual skin sticking to the hard material against polished rice groups, repeat the operation and debran the polished rice. The apparatus for production is equipped with a stirring apparatus 1 in which a screw 5 in the transporting direction, a succeeding resistance blade 50 twisted in the direction opposite thereto, high protruding ridges 51 extending in the nearly axial direction and provided at the top thereof and low protruding ridges 52 fixed to the side opposite to the high protruding ridges 51 in the peripheral direction at the farthest end of a stirring roll 3b freely rotatably supported in a cylindrical body 53. Thereby, the residual bran is peeled from the polished rice with the stirring apparatus 1 and the polished rice and the residual bran are then separated with a separating apparatus 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method and an apparatus for producing non-washed rice.
[0002]
[Prior art]
"Non-washed rice" refers to the bran remaining in the polished rice (hereinafter referred to as "skin bran") to such an extent that the polished rice finished by a rice mill or a polishing machine is not smelled of rice bran even if cooked without washing the rice. Is the rice that has been almost completely removed. However, as a method of producing unwashed rice, the only practical method disclosed is the “water-washing type” developed by the present inventors. (For example, there is Patent Document 1).
[0003]
However, in the above method, since the polished rice is washed with water, the bran removed from the rice bran is discharged as “tomato juice”, and enormous cost and space are required for the wastewater treatment. In addition, since soup juice is a high nutrient component, it tends to decay, and the sludge collected by wastewater treatment emits a strong odor, and even if the industrial waste trader pays a high price to collect it, such odorous sludge is used. The generation and removal of foods are extremely inconvenient for a food (flush-free rice) manufacturing plant that pursues a clean environment.
[0004]
Therefore, in the water washing method, the amount of water is reduced as much as possible, and at that time, the water in the juice is evaporated to perform drainage treatment. Not only requires a boiler and dryer, but also consumes a huge amount of ₂ Is generated, which is extremely inconvenient in the air environment. In addition, with the addition of about 5% of the amount of rice and stirring, the thick sap of the muddy sticking to the rice grains is wiped off with a heat-adhering material, and the heat-adhering material to which the sap juice has been transferred is sometimes dried and treated. The above disadvantages are not eliminated.
[0005]
As described above, the water-washing method is the only method of producing a practical non-washed rice as a publicly known technique, but has the above-mentioned disadvantages. In addition, since the juice has adhered to the washing-free rice production apparatus by the same method after the operation, the apparatus itself gives off a bad smell unless the apparatus is disassembled and washed with water every time the operation is completed. In addition, germs grow quickly and become filthy. Therefore, cleaning time and labor are very long to prevent this.
[0006]
For this reason, there is a so-called "dry-type non-washed rice production method" without using water, or a "wet-type non-washed rice production method" in which water is added to slightly wet the surface of rice grains.
[0007]
However, they are only names, and the substance is the method of making polished rice itself from the Taisho era, and the rice produced by that method is almost the same as ordinary polished rice, and it is just a degree that consumers can reduce the number of times of washing rice a little It is simply not worth the name of rice without washing. Although the method for producing unwashed rice has the above-mentioned problems, technical methods for stabilizing the quality of unwashed rice have not been disclosed. You can see things that vary.
[0008]
[Patent Document 1]
Japanese Patent No. 2602090
[0009]
[Problems to be solved by the invention]
In view of the above, the present invention provides a method and an apparatus for producing unwashed rice, which does not require wastewater treatment, has the same degree of bran removal as that of the "washing type", and can produce stable, high-quality unwashed rice. Make it an issue.
[0010]
[Means for Solving the Problems]
(Invention of claim 1)
The method for producing non-washed rice of the present invention is such that polished rice is beaten to a hard material so that skin bran remaining in the polished rice is adhered to the hard material, and the polished rice bran adhered to the hard material is rubbed against a group of polished rice. By repeatedly peeling off the hard material, the rice bran is removed.
[0011]
(Invention of claim 2)
In the method for producing unwashed rice according to the present invention, the method for producing unwashed rice according to the first aspect of the present invention is performed in a state in which polished rice is heated.
[0012]
(Invention of claim 3)
The method for producing non-washed rice according to the present invention relates to the invention of claim 1 or 2, wherein the skin bran of the polished rice is peeled off by a stirring device, and the polished rice and the skin bran are separated by a separation device.
[0013]
(Invention of Claim 4)
The method for producing non-washed rice according to the present invention relates to the invention as set forth in any one of claims 1 to 3 above, wherein the milled rice is rotated by a low ridge of a rotating roll loaded in the cylindrical body to cause the inner peripheral surface of the cylindrical body to rotate. On the inner peripheral surface of the cylindrical body, and furthermore, the milled rice group is rotated on the inner circumference of the cylindrical body by the rotating action of the high ridge on the opposite side of the low ridge in the circumferential direction. The rice bran is removed by repeating the process of rotating while rubbing the surface to scrape off the skin bran adhering to the inner peripheral surface of the cylinder.
[0014]
(Invention of claim 5)
The method for producing non-washed rice according to the present invention relates to the invention according to claim 4, wherein a screw blade formed to transport a conveyed object to a stirring roll, and a resistance blade twisted in a direction opposite to the screw blade. By the action of the above, the rice is heated before the rice is hit with the low protrusion.
[0015]
(Invention of claim 6)
The method for producing non-washed rice according to the present invention relates to the invention as set forth in claim 4 or 5, wherein a plurality of pairs of a low ridge of the stirring roll and a high ridge on the opposite side of the low ridge and the circumferential direction are provided. It is.
[0016]
(Invention of claim 7)
The method for producing non-washed rice according to the present invention relates to the invention according to claim 4, wherein cooling and heating of the intake air of the dehumidifier can be separately performed, and the intake air of the dehumidifier according to the atmospheric humidity. After cooling, the air whose humidity has been adjusted by changing the humidity of the cooling air is supplied to the separation device.
[0017]
(Invention of claim 8)
The method for producing unwashed rice according to the present invention is directed to the invention according to any one of the first to seventh aspects, wherein hot air is sent to a rice grain passage path in the machine after the operation is completed.
[0018]
(Invention of claim 9)
The apparatus for producing non-washed rice according to the present invention includes a screw in a transport direction, a resistance blade subsequently twisted in a reverse direction to the screw, and a tip of the screw in the back end of a stirring roll rotatably supported in a cylindrical body. A high ridge extending substantially in the axial direction and a stirrer having a low ridge fixed to the side opposite to the high ridge in the circumferential direction are provided, and the skin bran is separated from the polished rice by this stirrer, and then separated. The apparatus separates polished rice and skin bran.
[0019]
(Invention of claim 10)
In the apparatus for producing non-washed rice according to the ninth aspect, the low ridge and the high ridge of the stirring roll are paired, and the pairs are alternately formed to form a plurality of pairs.
[0020]
(Invention according to claim 11)
The apparatus for producing non-washed rice according to the present invention is directed to the ninth aspect of the present invention, wherein the separating apparatus is of a turntable type comprising a plate having a large number of holes. Is to be performed.
[0021]
(Invention of Claim 12)
The apparatus for producing non-washed rice according to the ninth and tenth aspects of the present invention relates to the invention according to the ninth and tenth aspects, wherein the rice grain density in the cylinder of the stirrer is determined by a current value of an electric motor driving the stirrer and a sensor provided in the cylinder. The opening degree of the shutter provided at the outlet of the cylindrical body is adjusted based on information on the rice temperature, moisture content, and other rice grains in the body.
[0022]
(Invention of Claim 13)
The apparatus for producing non-washed rice according to the present invention relates to the invention according to the twelfth aspect, wherein compressed air is injected from an air tube to a sensor provided in the cylinder.
[0023]
(Invention according to claim 14)
The apparatus for producing non-washed rice according to the present invention is directed to the invention according to any one of the ninth to thirteenth aspects, wherein hot air is sent to a passage of rice grains in the machine after the operation is completed.
[0024]
The operation and effect of the method and apparatus for producing unwashed rice according to the present invention will be clarified in the section of the embodiment of the present invention.
[0025]
BEST MODE FOR CARRYING OUT THE INVENTION
A method and an apparatus for producing unwashed rice according to an embodiment of the present invention will be described.
[0026]
FIG. 1 is a front view (partially in section) of an apparatus for producing unwashed rice using the method for producing unwashed rice of the present invention, and FIGS. 2 and 3 show a stirring device 1 and the like constituting the apparatus for producing unwashed rice. FIG. 4 shows a plan view of a separating device 6 which constitutes the device for producing non-washed rice.
[0027]
(About the basic structure of this washing-free rice production equipment)
As shown in FIG. 1 and FIG. 2, in this apparatus for producing unwashed rice, a stirrer 1, a separator 6, and components associated therewith are provided in a rectangular machine frame 26. The outer wall is surrounded by a panel, and the upper and lower sections partitioned by the upper floor 32 are each kept substantially sealed.
[0028]
As shown in FIG. 1, the stirrer 1 is disposed in the upper stage of the machine frame 26 in such a manner that the left (front end) discharge port 4 is lowered. Are positioned with respect to the machine frame 26 by the support frame 33, and the middle and rear ends thereof are supported by the support frame 34, respectively.
[0029]
The stirrer 1 is for removing the skin bran from the polished rice, and as shown in FIG. 2, a main shaft 3a rotatably supported by bearings 2 and 2 ', and coaxially and integrally with the main shaft 3a. The stirring roll 3 includes a rotating body 3b, and the body 3b of the stirring roll 3 is configured to be inserted into the cylindrical body 53. Here, as shown in FIGS. 2 and 3, a screw blade 5 for transferring an object to be transferred from right to left, and a resistance blade twisted in the opposite direction to the screw blade 5 are provided on the peripheral surface of the body 3b. 50, high ridges 51 and low ridges 52 (a plurality of high ridges 51 and low ridges 52 are alternately arranged in the axial direction) arranged at 180 ° intervals in the circumferential direction are fixed in order. In addition, in the stirring device 1, as shown in FIG. 2, the rotating force of the motor 18 is applied to the main shaft 3a to rotate the body 3b.
[0030]
As shown in FIG. 2, the cylindrical body 53 is connected to the supply port 10 at the upper rear end and the discharge port 4 to the lower distal end. The measuring ring 12 connected to the lower end of the hopper 11 is connected by a supply pipe 13.
[0031]
As shown in FIGS. 1 and 2, the hopper 11 is provided with an upper limit sensor 35 and a lower limit sensor 36. The upper limit sensor 35 and the lower limit sensor 36 are each a control mechanism of a conveyor for supplying milled rice to the hopper 11. (Neither shown) with an electric wire.
[0032]
As shown in FIG. 2, the measuring 12 is configured to supply the polished rice to the supply port 10 at a constant flow rate by the rotating blades 14, and is driven to rotate by a motor (not shown).
[0033]
As shown in FIGS. 1 and 2, hot air from a hot air blower 27 having a heater 27 a therein is sent into the supply pipe 13 through a blower pipe 15.
[0034]
As shown in FIGS. 1 and 2, a shutter 16 is provided at the discharge port 4, and the opening of the shutter 16 is adjusted by four sensors (not shown) provided in the cylinder 53. A control mechanism 17 is provided. As shown in FIG. 1, a discharge pipe 19 that extends through the upper floor 32 of the machine frame 26 and reaches the turntable type separation device 6 extends from the discharge port 4. The lower end portion is an enlarged diffusion portion 19a.
[0035]
On the other hand, in the lower stage of the machine casing 26, as shown in FIG. 1, there is provided a separation device 6 for separating a large number of polished rice and skin bran adhering to or mixed with it. The polished rice and skin bran that have entered the portion 19a fall to a falling position 19b (hatched portion) on the conveyor 60 of the separating device 6, which will be described later.
[0036]
As shown in FIGS. 1 and 4, the separation device 6 includes a conveyor 60 having a number of holes 60b smaller than polished rice and larger than skin bran in a transfer path 60a, and air on the upper surface side of the transfer path 60a. Suction means 61 for sucking air from the hole 60b, blows air from the lower surface of the transfer path 60a toward the upper surface via the hole 60b at a predetermined position on the upper surface side of the transfer path 60a, and blows up the polished rice during transfer. The apparatus includes an air blowing means 62 for applying and a discharging means 63 for drawing out the bran-removed polished rice to the product discharging port 21 side.
[0037]
Here, in this embodiment, as shown in FIG. 1 and FIG. 4, the conveyor 60 is constituted by a turntable having a circular shape in a plan view, which is rotationally driven by an electric motor. It is arranged. As shown in FIG. 1 and FIG. 4, the suction means 61 forms an air chamber 61a having a turntable constituting the conveyor 60 as an upper plate, and the air in the air chamber 61a is supplied with a bran discharge duct 61c (shown in the middle). (A dust collector not connected) is sucked by the suction blower 61b. As shown in FIGS. 1 and 4, the air jetting means 62 is configured by connecting an air jetting part 62a having substantially the same width as the transfer path 60a and a blow-up blower 62c with a pipe 62b. The upper end surface of 62a is slidably contacted with the turntable. The air jetting means 62 is arranged at 90 ° intervals as shown above (shown in FIG. 4). In FIG. 1, one set of the air jetting part 62a, the pipe 62b and the blow-up blower 62c is provided. Although only the air ejection means 62 is shown, all the air ejection means 62 have an air ejection portion 62a, a pipe 62b, and a blow-up blower 62c.
[0038]
As shown in FIG. 1, an air supply duct 28 connected to a dehumidifier 38 capable of separately performing cooling and heating of air is disposed above the separation device 6, and a discharge pipe is provided. An exhaust duct 30 connected to an exhaust blower 29 is provided at a diffusion portion 19 a at a lower end of the exhaust pipe 19.
[0039]
Reference numeral 39 denotes a dust hose connected to the exhaust duct 30 through an opening 40 formed at a corner at the back end of the cylindrical body 53. In other words, the exhaust blower 29 is sucking air from two places: the diffusion part 19 a at the lower end of the discharge pipe 19 and the rear end opening 40 of the cylindrical body 53. As shown in FIG. 1, reference numeral 24 denotes a line for sending compressed air from outside the cylinder 53 to the sensor provided near the supply port 10 in the cylinder 53 so that bran does not adhere to the sensor. There are four air tubes (not shown, but two on the opposite side), and reference numeral 25 denotes four electric wires (not shown but on the opposite side) for transmitting signals sent from the sensors to an amplifier (not shown). Are also two).
[0040]
(About the actual operation of this washing-free rice production equipment)
When the electrical equipment of each device other than the measuring device 12 and the hot air blower 27 is energized and the measuring device 12 is rotated at a constant speed while driving each device, the milled rice contained in the hopper 11 is supplied to the supply pipe 13 in a fixed amount. The polished rice continuously flowing down and entering the supply port 10 is sent to the left by the screw blade 5 and is discharged from the discharge port 4 at the left end. The opening of the outlet 4 is adjusted to some extent by a control mechanism 17 adjusted in accordance with the load current and a shutter 16 linked therewith. Furthermore, since rice is an agricultural product, the milled rice supplied to the non-washing rice equipment varies widely due to differences in rice fields, weather conditions, varieties, moisture content, storage conditions, milling degree, rice temperature, and the like. In order to keep it at a constant quality that consumers do not care about, it is indispensable to adjust various requirements for finishing unwashed rice. Therefore, each of the four sensors provided in the cylinder 53 controls the substance of the rice grains (rice temperature, moisture content, other information of the rice grains) in the cylinder 53 with the computer via the electric wire 25 in order to perform the sensor. Since the shutter 16 is automatically operated by transmitting to the mechanism 17, the rice pressure in the cylinder 53 is optimally adjusted to the rice grains. Then, in the cylindrical body 53, the milled rice sent by the screw blades 5 is first pushed back by the counter-twisting resistance blades 50, so that the milled rice groups are rubbed by increasing the intergranular pressure, and the rice grain surface is increased. Temperature rises sharply. However, due to the heat generated by rapid rubbing, the temperature rises only at the surface of the rice grains, and the depth is almost the same as the original temperature, and the surface is not made higher than the rice temperature at the rice mill, It does not affect the taste. In this way, the skin bran remaining on the surface of the polished rice grain has increased in viscosity (skin bran is different from normal bran in that it has a high viscosity and becomes more viscous as the temperature rises). When the polished rice is hit on the inner peripheral surface of the cylindrical body 53 (corresponding to the hard material described in Means for Solving the Problems) by the rotating action of the ridges 52, the skin bran remains on the polished rice and It adheres to the inner peripheral surface of the cylinder 53 and removes bran from the polished rice. Of course, for this purpose, (a) optimize the height and shape of the low ridges 52 for striking the inner peripheral surface of the cylindrical body 53, (b) the striking angle, and (c) the rotational speed of the stirring roll 3. It is necessary. Further, they are not uniform depending on the inner diameter of the cylindrical body 53 whose size changes according to the processing capacity. Therefore, in order to optimize the above (a), (b), and (c), it is necessary to conduct experiments to add a suitable size to a group of high-temperature polished rice discharged and dropped from the rice mill in the previous process. When the metal plate is applied obliquely at an angle of 30 ° to 70 ° with respect to the falling direction of the rice grains, depending on its position and angle, the skin bran remaining in the polished rice immediately adheres to the metal plate, and after a while It attaches to the extent that skin bran is deposited. Thereby, the optimum condition of the angle, speed, and density at which the polished rice hits the metal plate is obtained, whereby the height of the low ridges 52 such as (a), (b), and (c) according to the size of the cylinder 53 is determined. The sheath angle and the number of rotations can be selected. Anyway, the skin bran removed from the polished rice adheres to the inner peripheral surface of the cylindrical body 53 in this way, but when the stirring roll 3 rotates half a turn, the high bump that rotates close to the inner peripheral surface of the cylindrical body 53 The rotating action of the ridges 51 causes the milled rice group to rotate while rubbing the place where the clearance with the cylindrical body 53 is narrowed, so that the skin bran adhering to the inner peripheral surface of the cylindrical body 53 is scraped off. It is. This is the same as rubbing the skin bran adhering to the metal plate (preferably smooth stainless steel) with a finger in the above-mentioned experiment with a finger. Of course, in this case, the shape of the high ridge 51 and the clearance with the cylindrical body 53 can be known from the above experiment. Therefore, even within the cylindrical body 53, the skin bran adhered to the inner peripheral surface is scraped off by the rotating action of the high ridges 51 and the movement of the rice grain group thereby, and is mixed with the polished rice group. The skin bran does not adhere to the polished rice again. The reason is that skin bran is not simply attached to the surface of rice grains. Strictly speaking, the surface of polished rice has countless extremely fine depressions that are invisible to the naked eye. Because the skin bran enters the part, no matter how much the rice grain surface is rubbed like a conventional polishing machine, the skin bran entering the depression of micron size cannot be removed. Since the skin bran is attached to the inner peripheral surface of the cylindrical body 53 and is extracted from the depression of the rice skin, and because the skin bran is joined together with the skin bran extracted from the individual depression. However, when peeled from the inner peripheral surface of the cylinder 53, it becomes larger than the original, and even if mixed with the polished rice again, it cannot enter the original depression and adheres to the polished rice, At best it is only lightly attached.
[0041]
Accordingly, in the polished rice moving to the left while being stirred in the cylindrical body 53, the rice bran of the polished rice is attached to the inner peripheral surface of the cylindrical body 53 by the low ridges 52, and The condition in which the rice bran is scraped off is repeated many times, and the rice bran mixed with the rice grains is combined with the adsorption of the rice skin rice bran. The remaining bran is almost completely removed from the rice bran, and is weakly adhered to or mixed with the rice grains. In the meantime, a load imbalance and a rotation imbalance occur due to a difference in height between the high ridges 51 and the low ridges 52, but since these are alternately replaced and a plurality of pairs are combined, the balance is maintained. No vibration occurs. In addition, the four types of sensors provided in the cylinder 53 come into contact with the flowing rice grains and skin bran, so that they may adhere to the sensors. Since the air is supplied from the tube 24 and cleaned, no trouble is caused.
[0042]
The mixture of the rice grains discharged from the discharge port 4 and the debranched skin bran passes through the discharge pipe 19 and is diffused in the right and left directions in FIG. It falls on the table type separation device 6. Although rice bran still adheres or mixes with the rice grains immediately after falling, both are completely separated by the separation device 6 as described later, and become unwashed rice, which is discharged from the product discharge port 21. Further, the separated skin bran is sent to the dust collector (not shown) from the bran discharge duct 61c by air transport, and is separated from the air. The skin bran is immediately subjected to secondary processing and is beneficially commercialized as feed and fertilizer.
[0043]
Here, the milled rice and the skin bran are completely separated by the separating device 6 as follows.
[0044]
What adheres to or is mixed with the polished rice falls from the diffusion portion 19a to a falling point 19b (hatched portion) shown in FIG. When the turntable type conveyor 60 rotates about one turn, it reaches the discharge means 63, is drawn out of the conveyor 60, and is discharged from the product discharge port 21. In the meantime, the mixture on the conveyor 60 is caused by the suction force of the suction blower 61b connected to the bran discharge duct 61c, and at the same time, not only the mixture but also the skin bran attached to the polished rice passes between the polished rice at high speed. It is peeled off by a strong air flow and is sucked together with air from a hole 60b formed in the conveyor 60.
[0045]
Here, the place where the polished rice is stuck is not ventilated and does not produce the above-mentioned operation and effect. However, in this separation device 6, the position is determined by the ejection power from the air ejection portion 62 a arranged on the lower surface side of the conveyor 60. Only when it comes to the milled rice is blown up. The polished rice will fall immediately, but the positional relationship between the polished rice has changed completely from before, so there will be gaps in the places where the polished rice was stuck together until then. The attached skin bran is peeled off and sucked by the strong air flow passing at high speed.
[0046]
As described above, in the separation device 6, during the period from the time when the milled rice falls on the conveyor 60 having the holes 60b to the time when the milled rice is discharged, the suction power and the ejection power act on the milled rice, Since the positional relationship of the polished rice is switched each time it passes through the air bleeding point, even the rice bran on the entire surface of each polished rice is separated. In addition, when the polished rice is replaced, that is, when the rice comes over the air ejection part 62a, the rice is released from the sucking state that has been in the form of a whip, and is only blown up by the air from the air ejection part 62a. The polished rice does not rub against each other and the surface of the polished rice does not become rough. Further, when the processed polished rice is discharged from the transfer path 60a, the portion where the polished rice rises from the transfer path 60a due to the jetting power of the air from the air ejection portion 62a located directly below the discharge means 63 is used as the discharge means 63. Is sent in the circumferential direction by the rotating action of the screw constituting the above, no particles remain, and the whole amount is discharged from the product discharge port 21.
[0047]
The separating device 6 may be a known device as long as it has a function of separating the mixture into rice grains and bran. However, the separation device 6 should not be simply a sieve for separating rice grains and bran. This is because not only the rice bran does not adhere to the rice grains but is mixed in a separate state, and a considerable amount of peeled skin bran is not firm but re-adheses to the rice grain surface. This is because they cannot be separated by a simple sieve. Therefore, the separation device used in the present invention must be a separation device having a function of separating and separating not only foreign substances that are mixed but also those that are reattached to rice grains. For example, in the case of known materials, it is desired to separate the particles while removing those adhering to the surface of the granules as disclosed in JP-A-64-85063. However, in the known example, it is necessary to mix an abrasive cleaner in order to remove foreign substances adhering to the granules. However, it is desirable that the non-washed rice can serve the purpose without the use of additives as in this embodiment, only for the consumer who cooks and eats the rice without washing the rice.
[0048]
In this embodiment, air is supplied from the dehumidifier 38 to the upper space of the separation device 6 through the air supply duct 28 during the separation operation. The reason is that the air supplied to the separation device 6 from the dehumidifier 38 passes through the place where the cooling radiator in the dehumidifier 38 has condensed and wets, and at that time, the dust contained in the air is condensed with dew condensation water. And is discharged as a drain, so that the air is sanitary, and when the air is dry, the air in the dehumidifier 38 is not heated by a humidity sensor (not shown) so that the air is not heated. In the case of high humidity, conversely, when the humidity is high, such as during the rainy season or at night, the humidity sensor is transmitted, and the dehumidifier 38 automatically heats the air after cooling and automatically supplies appropriate low-humidity air. The air supplied from the air supply duct 28 to the separation device 6 is to automatically control the humidity of the supplied air so that the rice grains do not absorb moisture or release moisture to cause a change in moisture. is there. As described later, the dehumidifier 38 supplies the dehumidified air even after the operation is completed. Further, since the diffusion portion 19a at the lower end of the discharge pipe 19 is suctioned by the exhaust blower 29 through the discharge duct 30, the pressure is negative, so that the product is discharged from the product discharge port 21 and discharged. No dust will be discharged.
[0049]
As described above, the milled rice in the hopper 11 is continuously processed, and when the stored milled rice in the hopper 11 decreases and is detected by the lower limit sensor 36, it is transmitted to the control mechanism of the transporter, When the polished rice is supplied from the transfer device to the hopper 11 at a flow rate equal to or higher than the processing flow rate of the stirring device 1 and the hopper 11 is full, it is detected by the upper limit sensor 35 and the supply is stopped, so that continuous operation is possible. In this way, when the raw materials are no longer supplied and the work is completed, it may be left as it is, but non-washed rice is only used by consumers who do not wash rice and cook and eat it as it is, in order to increase the sanitary level In the present embodiment, since the remaining amount of the polished rice in the hopper 11 is low and the lower limit sensor 36 does not detect the signal after the lower limit sensor 36 has transmitted for a certain period of time or more, the end of work is detected. Immediately, the hot air blower 27 is automatically energized through a timer for a certain period of time, and hot air is blown into the stirring device 1 from the blower tube 15 via the supply tube 13 to the inside of the stirring device 1 and the discharge pipe 19. Is to dry the passage of the rice grains such as the separating device 6 to prevent the propagation of various bacteria. At the same time, it is also electrically connected to the dehumidifier 38, and the air that has been most dehumidified is automatically supplied to the separation device 6 by the air supply duct 28 for a certain period of time. After the device is in a dry state, the device is stopped. Thereby, even when the factory is in the rainy season when the humidity is high or when the humidity is high at night due to the temperature drop, the cabin is stopped in a dry state so that there is no room for bacteria to grow. In addition, because the stirrer 1 is tilted, and furthermore, the wind is blown from the supply pipe 13 at the end of the work as described above, no rice grains or skin bran remain in the stirrer 1 at all. is there. Of course, there is no residual in the separation device 6 as described above. Also, since the dust at the rear end of the cylindrical body 53 where dust easily accumulates is sucked into the opening 40 formed there from the exhaust blower 29 by the exhaust hose 39, there is no concern. Further, also in the agitating device 1 and the discharge pipe 19 communicating therewith, and further in the separating device 6, etc., dust is not left because the air is blown from the hot air blower 27 and the air is sucked. As described above, since the inside of the unwashed rice washing apparatus of this embodiment is automatically cleaned, there is no need to operate the equipment by humans, nor to clean the equipment at all. Can be realized. Furthermore, the method for producing rice without washing according to the present invention does not use a single drop of water, so that drying measures in the machine after the work is not so much necessary, but rice without washing is what consumers eat without washing. As a matter of fact, in order to raise the hygiene level, each device is housed in a substantially sealed machine frame 26 to prevent foreign substances from being mixed in with other devices, and to control humidity during operation inside the machine frame 26, At the end of the operation, the inside of the machine is dried and the temperature is reduced.
[0050]
(About the excellent effect of this washing-free rice production equipment)
A. Since no water is used in the production method of the present invention, it is apparent that the following effects can be obtained.
▲ 1 ▼. There is no need for wastewater treatment, the capital investment is small, and the running cost is low.
▲ 2 ▼. No space for wastewater treatment is required.
(3). Good quality rice-free rice is obtained, which is almost completely removed and whose quality is stable.
▲ 4 ▼. The manufacturing plant is clean and hygienic.
▲ 5 ▼. There is no need to disassemble and clean the apparatus at the end of each work, greatly reducing labor and time, and reducing running costs.
▲ 6 ▼. Energy is not required to dry the washed rice grains, so energy is saved and running costs are reduced. Running costs are reduced because water costs are unnecessary.
▲ 7 ▼. After the work is completed, the inside of the machine is dried, which is sanitary.
<8>. Since the removed skin bran is fresh, it can be effectively used for feed, fertilizers, etc., and by-product profit can be obtained as opposed to the flushing type.
▲ 9 ▼. Since it has completely zero emissions, it has a low environmental load in both air and water quality.
[0051]
B. After the work is completed, hot air is passed through the passage of rice, so that the propagation of various germs is sealed off and sanitary. In addition, this embodiment can be used for a flush type. In such a case, there is no need to disassemble the device after the work and to perform cleaning.
[0052]
C. Other
▲ 1 ▼. Since the entire device is extremely simple, the device can be produced at low cost.
▲ 2 ▼. Since the opening of the shutter 16 of the discharge port 4 is controlled based on the current value of the drive motor of the stirring device 1 and the rice temperature in the cylinder 53, etc., it is possible to always produce non-washed rice with constant moisture.
(3). Low running cost for production of unwashed rice.
▲ 4 ▼. No rice grains remain in the apparatus and no skin bran remains, thus preventing contamination.
▲ 5 ▼. Since the air supply to the separation device 6 controls the humidity, the moisture of the rice grains does not change due to moisture absorption or moisture release.
▲ 6 ▼. After the operation is completed, high-temperature dehumidified air is fed into the passage of rice grains and the like, so that the inside of the machine can be maintained in a sanitary manner.
▲ 7 ▼. It is safe because nothing is added.
<8>. Completely unmanned driving is possible.
[0053]
【The invention's effect】
The present invention has the following effects.
[0054]
From the contents described in the section of the embodiment of the invention, a method and an apparatus for producing unwashed rice capable of producing high-quality unwashed rice having a degree of bran removal equivalent to that of a "washing type" without wastewater treatment are provided. did it.
[Brief description of the drawings]
FIG. 1 is a front (partially cross-sectional) view of an apparatus for producing non-washed rice using the method for producing non-washed rice of the present invention.
FIG. 2 is a partial cross-sectional view of a stirrer constituting the washing-free rice manufacturing apparatus.
FIG. 3 is a sectional view taken along line XX of FIG. 2;
FIG. 4 is a partial cross-sectional view of a separation device included in the washing-free rice manufacturing device.
[Explanation of symbols]
1 stirrer
2 Bearing
2 'bearing
3 Stirring roll
4 outlet
5 Screw blade
6 Separation device
24 air tube
39 perforated plate
50 resistance blade
51 High ridge
52 Low protrusion
53 cylinder

Claims (14)

Repeat the process of hitting the polished rice on a hard material to adhere the skin bran remaining in the polished rice to the hard material, and peeling the skin bran attached to the hard material from the hard material by rubbing a group of polished rice. And removing the bran from the polished rice. 2. The method for producing unwashed rice according to claim 1, wherein the method is performed while heating the polished rice. 3. The method for producing unwashed rice according to claim 1 or 2, wherein the rice bran of the polished rice is peeled off by a stirrer, and the rice bran is separated by a separator. By rotating the low ridge of the rotating roll loaded in the cylinder, the milled rice is hit on the inner peripheral surface of the cylinder, and the skin bran that has adhered to the polished rice adheres to the inner peripheral surface of the cylinder, and further, By repeatedly rotating the milled rice group while rubbing against the inner peripheral surface of the cylinder by the rotating action of the high ridge on the opposite side of the low ridge in the circumferential direction, repeatedly scraping off the skin bran attached to the inner peripheral surface of the cylinder The method for producing unwashed rice according to any one of claims 1 to 3, wherein rice bran is removed. Agitating rolls, screw blades formed to transport the conveyed objects, and the action of the resistance blades twisted in the opposite direction to the screw blades, before the polishing of the milled rice with low protrusions, milled rice 5. The method for producing unwashed rice according to claim 4, wherein heat is generated. The method for producing non-washed rice according to claim 4 or 5, wherein a plurality of pairs of a low ridge of the stirring roll and a high ridge on the side opposite to the low ridge are provided. It is possible to separately perform cooling and heating of the intake air of the dehumidifier, and after cooling the intake air of the dehumidifier according to the atmospheric humidity, change the humidity of the cooling air to adjust the humidity. The method according to claim 4, wherein the rice is supplied to a separation device. 8. The method for producing unwashed rice according to claim 1, wherein hot air is sent to a passage of rice grains in the machine after the operation is completed. At the back end of the stirring roll rotatably supported in the cylinder, a screw in the transport direction, followed by a resistance blade twisted in the opposite direction, and a high ridge extending substantially in the axial direction at the tip. A stirrer having a low ridge fixed to the high ridge and the opposite side in the circumferential direction is provided, and the stirrer separates the skin bran from the polished rice. Thereafter, the separation device separates the polished rice and the skin bran. An apparatus for producing rice without washing. 10. The apparatus for producing non-washed rice according to claim 9, wherein the low ridge and the high ridge of the stirring roll are paired, and the pairs are alternately replaced to form a plurality of pairs. 10. The separator according to claim 9, wherein the separation device is of a turntable type comprising a plate having a large number of holes, and the suction and the air supply are performed from the lower surface side. Rice washing equipment. The rice grain density in the cylinder of the stirrer is provided at the outlet of the cylinder based on the current value of the electric motor that drives the stirrer and the information on the rice temperature, water content, and other rice grains in the cylinder by sensors provided in the cylinder. 11. The apparatus for producing non-washed rice according to claim 9, wherein the opening of the shutter is adjusted. The apparatus according to claim 12, wherein compressed air is injected from an air tube to a sensor provided in the cylinder. 14. The apparatus for producing unwashed rice according to claim 9, wherein hot air is sent to a passage of rice grains in the machine after the operation is completed.

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