JP3904974B2 - Household rice milling machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rice mill for home use, and more particularly to a non-washed rice mill.
[0002]
[Prior art]
In a rice mill for household use, with a rice milling mechanism that inserts a rice mill roll into the milling room and performs rice milling by friction between the rice grains accompanying the rotation of the milling roll, in a circulation path consisting of a hopper, a rice milling room, and a return passage A circulation method for performing rice milling while circulating rice grains (see, for example, JP-A-8-19745), and rice milling by passing rice grains from a hopper through a rice milling room provided with a resistance plate on the outlet side 1 There is a circulation system (see, for example, Japanese Patent Laid-Open No. 2000-301090). In either method, the rice milling screen is provided with a number of slits for discharging rice bran, and the rice milling roll is provided with a progressive portion formed of a fine pitch spiral at the root portion, and at the tip portion is pitched. A reverse feed portion comprising a rough opposite spiral is provided.
[0003]
In the above rice milling mechanism, the rice grains in the rice milling screen are fed to the exit side of the rice milling screen by the action of the forward feeding section of the rice milling roll, and are subjected to resistance in the pushing back direction by the reverse feeding section. This causes strong friction between the rice grains and rice milling is performed, and the rice bran generated by the rice milling action is discharged from the slit of the rice milling screen to the bran receiving container.
[0004]
[Problems to be solved by the invention]
When cooking white rice that has been polished as described above, rice toning is performed to wash away the rice bran adhering to the rice grains in advance. The so-called washed rice that has been removed is now in circulation.
[0005]
In order to make wash-free rice in commercially available rice mills on the market, a rice mill with a built-in rotating brush is installed separately from the rice mill, and the rice after milling is transferred to the rice mill without using water. Means are known for removing bran adhering to the rice grains by wiping the rotating brush. In addition, in a rotary type rice mill, a rice milling process using centrifugal force is performed after the rice milling process.
[0006]
However, using a rice grinder different from the rice milling machine has the inconvenience of using two devices. In addition, the operation of making no-wash rice requires a rice polishing process after the rice milling work, which is troublesome and has a problem that the brush of the rice polishing machine is easily worn. In addition, when rice polishing using centrifugal force is performed in a rotating rice mill, there is a disadvantage that many cracks occur in the rice grains after the rice polishing.
[0007]
Therefore, the present invention is a household rice milling machine having a rice milling mechanism comprising a combination of a rice milling screen and a rice milling roll, wherein the rice milling is performed simultaneously with the rice milling, and the washing-free rice is obtained simultaneously with the completion of the rice milling. It is an issue to provide.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention inserts a rice mill roll into a cylindrical rice milling screen provided in a rice milling chamber, and drives the rice milling roll to discharge rice grains fed from the inlet end of the rice milling screen. In the domestic rice milling machine which discharges from the end and sucks and discharges the bran produced by the rice mill by applying an intake force to the outer periphery of the rice milling screen, an external air suction hole is provided near the outlet end of the rice milling screen. Is adopted.
[0009]
According to the above configuration, the polishing is performed by sucking and discharging the bran remaining in the vicinity of the exit end of the rice milling screen by the flow of external air sucked from the suction holes. It is done.
[0010]
A recirculating rice mill that performs rice milling while circulating rice grains discharged from the outlet end of the rice milling screen through a return passage and a hopper through a hopper and returning to the inlet end, wherein the suction hole is a part of the return passage. The structure provided in can be adopted. In the case of this type, while continuing the circulation, as in the case described above, the rice that is adhering to the rice grains near the outlet end of the rice milling screen is sucked and discharged by the flow of external air sucked from the suction holes, and the polishing is performed. Is called.
[0011]
Also, a resistance plate is provided at the outlet end of the rice milling screen, and the rice milled rice grain is discharged once through the gap between the resistance plate and the outlet end. It is possible to adopt a configuration in which a suction passage is provided between the suction hole and a part of the outer peripheral surface of the rice milling screen while being provided in the rice milling chamber. In the case of this type, the flow of external air acts on the rice grains immediately before being discharged from the rice milling screen, and the nudity adhering to the rice grains is sucked and discharged to conduct the rice polishing.
[0012]
Further, in order to solve the above problems, a rice mill roll is inserted into a cylindrical rice milling screen provided in a rice milling chamber, and the rice grain fed from the inlet end of the rice milling screen is driven from the outlet end by driving the rice milling roll. In a circulating household rice mill that circulates the discharged rice grains through a return path and a circulation path that returns to the inlet end via a hopper, a brush portion is attached to and detached from a part of the return path. A freely provided configuration can also be employed.
[0013]
In this case, in the return path in the middle of the circulation of the rice cereal discharged from the exit of the rice milling screen, the rice cereal comes into contact with the brush portion and is removed by wiping. The bran removed by wiping is discharged to the outside when passing through the inside of the rice milling screen. The bran adhering to the brush portion is removed by removing the brush portion and cleaning it.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 and 2 is a slant circulation type rice mill, and a rice milling motor 3 is mounted on the machine base 2 with a certain gradient inside the casing 1, The rice mill roll 4 attached to the motor shaft also extends obliquely upward with the gradient. A hopper 5 having an open top surface is provided at the upper portion of the casing 1, and a discharge port 6 at the lower end thereof communicates with the inside of the rice milling chamber 7. The hopper 5 is provided with a lid 9.
[0015]
The rice milling chamber 7 is provided in an inclined state along the lower portion of the hopper 5, and an outlet at the upper end thereof is opened to a vertical return passage 8. The upper end of the return passage 8 is opened to the hopper 5. Thereby, as shown by the arrow in FIG. 1, a circulation passage is formed in which rice grains circulate in the order of the hopper 5, the discharge port 6, the rice milling chamber 7, the return passage 8, and the hopper 5.
[0016]
A rice guide member 11 is provided below the discharge port 6 via a shutter 10 (see FIG. 2A), and the rice guide member 11 is opened on the rice receiving container 12.
[0017]
The lower part of the rice milling chamber 7 is opened in the length direction, and is communicated with the cyclone device 14 via the bran guide member 13. The bran separated by the cyclone device 14 is discharged to the bran receiving container 15 installed below the air, and the air is sucked into the suction device 17 through the hose 16 and discharged to the outside.
[0018]
The rice milling screen 18 accommodated in the rice milling chamber 7 is a cylindrical body formed by aligning semi-cylindrical bodies with collars 19 and 19 facing each other, and a large number of slits 21 are provided in the cylindrical part. The nudity is discharged from the slit 21. In the rice milling screen 18, the end portion on the discharge port 6 side of the hopper 5 serves as the rice grain inlet 22, and the end portion on the return passage 8 side serves as the outlet 23.
[0019]
The rice milling roll 4 inserted through the rice milling screen 18 is provided with a forward feed portion 4a formed of a spiral with a fine pitch at the base portion, and a guide portion 4b is formed by a required number of ridges parallel to the shaft at the intermediate portion. . At the tip, the ridge is formed in a reverse spiral with a rough pitch to form a reverse feed portion 4c.
[0020]
Incidentally, in the return passage 8, a mesh-like suction hole 24 is provided in the vicinity of the outlet 23 of the rice milling screen 18 (see FIGS. 2A and 2B). This suction hole 24 is a set of meshes of a size that does not allow rice grains to leak out, one at a position facing the outlet 23, or one on each side (see 24 ′ in FIG. 2 (b)). Provided.
[0021]
The household rice milling machine of the first embodiment is as described above. When a predetermined amount of brown rice is put into the hopper 5 and a start key (not shown) is turned on, the microcomputer executes the rice milling process, The motor 3 is driven and rice milling is started. The brown rice that has entered the rice milling chamber 7 from the discharge port 6 of the hopper 5 is fed by the action of the forward feed portion 4a of the rice mill roll 4, while the rice milling screen is moved by the reverse feeding action of the reverse feeding portion 4c and the gravity due to the inclination of the rice milling chamber 7. The friction between the brown rice is generated inside 18, and rice milling is gradually performed by the friction, and the rice cereal from the outlet 23 circulates back to the hopper 5 through the return passage 8.
[0022]
The bran generated inside the rice milling screen 18 during the circulation is sucked by the suction force of the suction device 17, exits from the slit 21, falls to the guide member 13, and enters the cyclone device 14. In the cyclone device 14, the bran and air are separated, and the separated bran is discharged into the bran receiving container 15. Air is sucked into the suction device 17 through the hose 16 and released to the outside.
[0023]
Simultaneously with the suction, external air is sucked from the suction holes 24 or 24 ′ of the return passage 8. The sucked air entrains the bran remaining in the vicinity of the exit of the rice milling screen 18 and is sucked into the cyclone device 14 from the bran guide member 13 and separated from the air. That is, if there is no suction hole 24 or 24 ', the rice bran coming out from the outlet 23 of the rice milling screen 18 is returned to the hopper 5 together with the rice grains, but is sucked out and polished by the presence of the suction hole 24 or 24'. The As a result, when rice milling is completed, polished rice grains from which rice bran has been sufficiently removed, that is, washing-free rice, are obtained.
[0024]
Next, the household rice milling machine of the second embodiment shown in FIGS. 3 and 4 is a one-time-type rice milling machine, and in this case, the rice milling roll 4, the rice milling screen 18, and the rice milling chamber 7 are arranged in a horizontal state. Is done. Although the point that the inlet 22 of the rice milling screen 18 communicates with the outlet 6 of the hopper 5 is the same as that described above, the outlet 23 is inserted into the end plate 25 of the rice milling chamber 7 and opened to the outside. As shown in FIG. 4, the end plate 25 is detachably engaged with the engaging portions 27, 27 of the rice milling chamber 7 by snap fastening pieces 26, 26 provided on the left and right sides.
[0025]
A resistance plate 28 is pressed against the outlet 23 of the rice milling screen 18 with a required pressing force. The resistance plate 28 is supported by a pressure adjusting arm 31 of a pressure adjusting device 29 provided in the upper part of the rice milling chamber 7 via an interlocking plate 32. The pressing force of the resistance plate 28 is adjusted through the pressure adjusting device 29. A discharge chute 33 is attached to the end plate 25 around the outlet 23 of the rice milling screen 18.
[0026]
The lower end of the rice milling chamber 7 is open, and a bran guide member 13 is attached to the open portion. Although not shown, the bran guide member 13 is connected to the suction device 17 via the cyclone device 14 (see FIG. 1) and the hose 16 as in the case of the first embodiment.
[0027]
In the rice milling chamber 7, mesh-like suction holes 34, 34 are provided on the left and right side surfaces in the vicinity of the outlet 23 of the rice milling screen 18. In this case, the meshes of the suction holes 34 and 34 are also set to a size that prevents the rice grains from leaking out.
[0028]
Inside the suction holes 34, 34, there are provided an upper partition 41 and a lower partition 42 that reach the rice milling screen 18 from the inner surface of the rice milling chamber 7 with the upper and lower sides of the suction holes 34, 34 interposed therebetween. A back wall 43 is provided between the inner ends of 41 and 42. The partition walls 41 and 42 and the back wall 43 constitute a suction passage 44 that reaches the outer peripheral surface of the rice milling screen 18 from the suction holes 34 and 34.
[0029]
The second embodiment is as described above, and, like a normal one-time type rice milling machine, by driving the rice mill roll 4, a large friction is applied to the rice grains inside the rice milling screen 18 closed by the resistance plate 28. Then, the polished rice grains are discharged from the discharge chute 33 to a rice receiving container (not shown) while pushing the resistance plate 28 open with a certain pressing force.
[0030]
In addition, the bran produced during the milling process is sucked through the bran guide member 13 and discharged to an external bran receiving container (not shown). At the same time, external air is sucked from the suction holes 34. In the vicinity of the outlet 23, there is rice grain that has substantially finished milling, but if there is no suction hole 34, the bran is discharged without being sufficiently removed. However, since the suction hole 34 is provided, the external air sucked from here enters the inside through the suction passage 44 through the slit 21 on the outer peripheral surface near the outlet 23 of the rice milling screen 18. While the air flow moves from the center portion of the rice milling screen 18 to the bran receiving member 13 side (see arrow a in FIG. 3A), the bran stuck to the rice grains is caught and discharged to the outside. As a result, the polished rice grains that have been polished and the rice bran has been sufficiently removed, that is, wash-free rice, are discharged from the outlet 23.
[0031]
Next, the third embodiment shown in FIG. 5 is applied to the same inclined circulation type rice milling machine as the first embodiment, and instead of the configuration in which the suction holes 24, 24 ′ are provided, a return is provided. A brush portion 35 is provided in the passage 8. The brush portion 35 is fitted into the window hole 36 provided in the return passage 8 from the outside, and is detachably attached by engaging the snap stopper pieces 37, 37 with the engagement holes 38, 38. In this case, the bristles of the brush portion 35 are required to have a length and rigidity enough to contact the rice grains passing through the return passage 8 and wipe off the bran attached thereto.
[0032]
When rice milling is performed by providing the brush portion 35 as described above, the nudity attached to the rice grains discharged from the outlet 23 of the rice milling screen 18 is wiped and polished by the brush portion 35 while passing through the return passage 8. . The wiped bran adheres to the brush portion 35 or circulates together with the rice grains and is discharged from the rice milling screen 18. This gives wash-free rice.
[0033]
Note that the brush portion 35 is desirably removed and cleaned periodically.
[0034]
【The invention's effect】
As described above, according to the present invention, the rice bran remaining in the vicinity of the exit of the rice milling screen is polished by sucking external air or wiping with a brush, so that unwashed rice can be obtained simultaneously with the completion of the rice milling. In addition, the polished rice by air suction can be adopted for either a circulation type or a single-pass type.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a first embodiment. FIG. 2A is a partially enlarged cross-sectional view of the same. FIG. 1B is a partial perspective view of FIG. Sectional view of chamber portion (b) Sectional view of line bb in FIG. 4 (a) FIG. 4 is an exploded perspective view of the same. FIG. 5 (a) Partial sectional view of the third embodiment (b) (a ) Cross-sectional view taken along line bb in the figure (c) Exploded perspective view of the figure (a)
DESCRIPTION OF SYMBOLS 1 Casing 2 Machine stand 3 Rice milling motor 4 Rice mill roll 4a Forward feed part 4b Guide part 4c Reverse feed part 5 Hopper 6 Discharge port 7 Rice milling chamber 8 Return passage 9 Lid 10 Shutter 11 Rice guide member 12 Rice receiving container 13 Bran guide member 14 Cyclone device 15 Bran receiving container 16 Hose 17 Suction device 18 Rice milling screen 19 Brim 21 Slit 22 Inlet 23 Outlet 24, 24 'Suction hole 25 End plate 26 Snap piece 27 Engaging portion 28 Resistance plate 29 Pressure adjusting device 31 Pressure adjusting arm 32 Interlocking plate 33 Discharge chute 34 Suction hole 35 Brush portion 36 Window hole 37 Snap stop piece 38 Engagement hole 41 Upper partition wall 42 Lower partition wall 43 Back wall 44 Suction passage

Claims (2)

Rice roll in a cylindrical milled screen provided on the rice chamber was inserted, by driving the said purified rice roll is discharged from the outlet end of the rice which was fed from the inlet end of the rice screen, return the exhaust out the Rice In a circulation type domestic rice milling machine that performs rice milling while circulating through a circulation path that returns to the inlet end through a passage and a hopper , a brush portion is detachably provided in a part of the return passage. A rice mill for home use. The rice milling chamber, the rice milling screen, and the rice milling roll have an inclined shape in which the exit end side of the rice milling screen is raised, and the outlet at the upper end of the rice milling chamber is opened to the vertical return passage. A rice mill for household use as described in 1 .

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