JP2000218175A - Grain treatment apparatus and its agitation tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an agitation tool for a rice milling machine which can prevent the breakage of blades associated with the agitation of brown rice. SOLUTION: An agitation tool 41 for a rice milling machine which is fitted to a rotary shaft 27 installed in the middle of a separation basket 31 of an upper end opening which forms a bran chamber in the container 21 of the upper end opening between it and the inner surface and can go in and out and agitates brown rice in the basket 31 to separate bran into the bran chamber is provided. The tool 41 is equipped with an agitation tool main body 42 which is fitted to the shaft 27 and blades 44 which have vertical material-extruding surfaces, are cantilever-supported by a main body 42 and formed so that the distance between the surface and the inside surface of the basket 31 is narrowed toward a free end F. The breadths of the upper and lower surfaces (reinforcing rib) 44b are narrowed toward the free end F, and the cross section of the blade 44 is made smaller than that of the root part E of the blade 44 supported by the connection part 46 of the main body 42 toward the free end F.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to brown rice, white rice, wheat,
The bran of the grain of buckwheat or the like (a germ, a bran layer and a starch layer peeled off from the grain, or a fine powder mixed with a seed coat or the like, and is hereinafter abbreviated as "bran") is a dry structure. And a grain processing device such as a household rice mill.

[0002]

2. Description of the Related Art In a domestic rice mill, an apparatus main body having a built-in drive mechanism for rotating a rotating shaft, a container integrally provided with the apparatus main body and having an open upper end, and a large number of separation machines are provided. With a hole, a separation basket is formed between the inner surface of the container and the inside of the container so as to be removably inserted into and removed from the container, and is detachably attached to a rotating shaft disposed at a central portion in the container. An agitator mounted and rotated within the separating cage. The milling device of this rice milling machine is formed of a synthetic resin stirring device main body which is fitted and attached to a rotating shaft, and two rice milling rods protruding in a radial direction of the main body. Each of the splashes is twisted at its base and is oblique.

[0003] According to this rice milling machine, brown rice accommodated in the separating basket is stirred in the separating basket by rotation of the stirring tool, and the rice bran is rubbed together with the rice to pass through the separating holes of the separating basket. To the bran room,
You can mill brown rice.

However, as described above, the polished rice protruding in the radial direction of the stirring tool does not have a surface for extruding brown rice toward the inner peripheral surface of the separating basket, so that the polished rice does The effect of rubbing brown rice with each other while restricting the movement to some extent is low, and since the polished rice extends in the radial direction of the stirring tool body, the impact given to the brown rice with the stirring is large, and the brown rice is easily damaged. Due to the tendency of the milled rice to be twisted, the brown rice is easily flipped upward when the amount of milled rice is small. Therefore, when the milled rice has a low degree of milling (less than 7 minutes),
Easily causes uneven whitening.

[0005] In order to solve such a problem, the present inventor has provided a stirring tool main body attached to a rotating shaft, one or more blades cantilevered on the main body, and the blades are separated cages. A vertical material extruding surface facing the inner peripheral surface of the blade, and a scraper that is provided so that the distance between the material extruding surface and the inner peripheral surface of the separating cage becomes narrower toward the free end of the blade. And Japanese Patent Application No. 10-327997.

[0006] According to the rice milling machine provided with this stirring tool,
Since the brown rice can be pressed against the inner peripheral surface of the separating basket with the material extruded surface of the blade, the rubbing between the brown rice becomes stronger and the rubbing between the brown rice and the inner peripheral surface of the separating basket and the blade also becomes stronger, The rice milling action can be improved, and the impact on the brown rice can be reduced to reduce the breakage of the brown rice. In addition, since there is no slope for flipping up the brown rice, uneven whitening can be reduced even when the amount of brown rice is small.

[0007]

However, the stirring tool is rotated at high speed (for example, 2400 rpm to 300
0 rpm), the centrifugal force accompanying the high-speed rotation acts on the cantilevered blade having the material pushing surface as described above. In particular, when the amount of brown rice is small, the effect of the centrifugal force is large. In addition, the density of brown rice being stirred in the separating basket by this stirring tool is not uniform, there is a density that follows the stirring, and the density of brown rice sandwiched between the material extrusion surface of the blade and the separating basket is low. When it is high, the blade is pushed toward its rear surface under the reaction corresponding to its density.

[0008] Therefore, the blade supported cantilevered by the agitator body repeatedly receives a force that constantly varies in the front and back (thickness) directions due to the above-described variation in the density of brown rice and the centrifugal force. Therefore, it is necessary to take care not to damage the blade regardless of such a repeated load.

The first problem to be solved by the present invention is as follows.
An object of the present invention is to provide a stirring tool for a grain processing device that can prevent breakage of a blade due to stirring of a grain.

A second object of the present invention is to provide a grain processing apparatus which can solve the first problem.

[0011]

According to the first aspect of the present invention, a bran chamber is formed between a container having an opening at an upper end and a rotating shaft disposed at a central portion thereof and an inner surface of the container so as to be removably accommodated. A rotating tool main body which is disposed in a separating cage having an upper end opening having a large number of separating holes, and is attached to the rotating shaft; and a cantilever supported on the rotating tool body having a vertical material pushing surface. It is provided with one or more blades provided so that the distance between the material extruding surface and the inner peripheral surface of the separation basket is narrowed toward the free end, and the kernel contained in the separation cage is provided. It is assumed that a stirring tool for a grain processing apparatus that separates bran from the grain into the bran chamber by stirring.

[0012] In order to solve the first problem, the invention according to claim 1 is configured such that a cross-sectional area of the blade is larger than a root portion of the blade supported by a blade connecting portion of the stirring tool main body. It is characterized in that it is smaller on the free end side.

[0013] In the invention according to the first aspect, at the root portion of the blade of the stirring tool that is rotated at a high speed in the separating cage,
The centrifugal force and the force in the direction of the back surface of the blade act the most along with the stirring of the grain, but since the cross-sectional area of this root is larger than other parts, the strength of the root can be increased. In addition, since the cross-sectional area of the cantilevered blade is smaller at the free end side than at its root, the mass at the free end is reduced, and the centrifugal force acting on the root of the blade can be reduced accordingly. In addition, the blade is more likely to bend toward the free end in accordance with the change in the cross-sectional area, so that the blade applies a load toward the back surface in accordance with the density of the grains sandwiched between the material extruding surface of the blade and the separating cage. When receiving, the free end side of the blade flexes easily,
The load can be prevented from being concentrated on the root of the blade.

In carrying out the invention of claim 1,
As in the second aspect of the present invention, the change in the cross-sectional area of the blade may be dependent on the change in the thickness of the blade in the front and back directions. As in the invention of the third aspect, it is preferable that the change in the cross-sectional area of the blade depends on the change in the width of the reinforcing rib integrally projecting from the back surface of the blade.

In carrying out the invention of claim 3,
As in the invention according to claim 4, which is dependent on the present invention, a metal plate having the reinforcing ribs that bend in the rear direction on both upper and lower edges of the material extruding surface and having a U-shaped cross section orthogonal to the longitudinal direction. The blades may be provided. In this way, the ribs and the material extruded surface are connected in a rounded shape with the bending of the reinforcing ribs, and no steep edge is provided at the boundary between these surfaces. In the extrusion of the grain by the blade, the unnecessary grain can be prevented from being scraped off as in the case where the edge and the grain are in contact with each other.

In order to solve the second problem, the invention according to claim 5 is directed to an apparatus main body in which a drive mechanism for rotating a rotating shaft is built, and the apparatus main body is provided integrally with the apparatus main body or the apparatus main body. A container which is separate from the main body and which is detachably attached to the apparatus main body and has an open upper end; a plurality of separation holes; and a bran chamber formed between the inner surface of the container and the container. 5. The separation basket which is removably accommodated in the container, and which is detachably attached to a rotating shaft disposed at a central portion in the container and is rotated in the separation basket. Or the stirring tool according to item 1.

According to the fifth aspect of the present invention, the separating basket is set in the container, a bran chamber is formed between the separating basket and the container, and the separating basket is located at the center of the set separating basket. A stirring tool is attached to the rotating shaft. When the container is integral with the apparatus main body, the grain processing apparatus of the present invention puts an appropriate amount of grains such as brown rice into the separation basket, and then operates the drive mechanism of the apparatus main body. If the container is used and the container is separate from the apparatus main body, attach the container to the apparatus main body, and put an appropriate amount of grains such as brown rice into a separating basket before and after the container, The drive mechanism is operated for use.

By the operation of the drive mechanism, the rotating shaft disposed at the center of the separating car and the wheeling tool attached to the shaft rotate in the stationary separating car and are already thrown into the separating car. Stir grains such as brown rice. In this agitation, the blade pushes toward the inner peripheral surface of the separating basket while allowing the grains to escape along the material extruding surface. With such agitation of the grain, the bran of the grain passes through a number of separation holes opened in the separating basket and is accumulated in the bran chamber between the container and the separating basket. Grains such as rice from which the bran has been removed are left. And since a stirring tool is based on the invention in any one of said Claims 1-4, it can prevent that the blade of this stirring tool breaks in the said stirring as mentioned above.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a rice mill according to a first embodiment of the present invention will be described with reference to FIGS. This rice milling machine is composed of an apparatus main body and a grain processing attachment that is attached to and detached from the apparatus main body.

In FIG. 1 to FIG. 3, reference numeral 1 denotes an apparatus main body made of synthetic resin. The apparatus main body 1 is assembled by connecting a body case 1a, a bottom case 1b, and a top cover 1c. As shown in FIG. 3, a metal support plate 2 is disposed in a horizontal position in the apparatus main body 1. The apparatus main body 1 has a container mounting portion 3 having a trapezoidal shape, and a drive motor 4 which is covered from above with a top cover 1c is provided at a position separated from the mounting portion 3, and the motor 4 is a support plate 2 Mounted on

As shown in FIG. 3, a bearing 7 is attached to the support plate 2 via a bearing holder 6 connected thereto.
An output shaft 8 penetrating the bearing 7 is rotatably supported in a vertical posture. The upper end of the output shaft 8 protrudes from the center of the concave portion 3a of the container mounting portion 3 whose upper surface is open,
The drive side coupling 9 is attached to this upper end.

The lower end of the motor shaft 4a of the drive motor 4 penetrates the support plate 2 downward, and the motor shaft 4a and the output shaft 8 are connected via transmission means. Device body 1
The drive motor 4, output shaft 8, and transmission means incorporated in the device constitute a drive mechanism 10. The transmission means includes, for example, a drive pulley 11 fixed to the motor shaft 4 a, a deceleration driven pulley 12 fixed to the lower end of the output shaft 8, and a belt 13 wound around these pulleys 11 and 12.
And is formed from

As shown in FIGS. 1 and 2, the top wall of the top cover 1c is used as an operation panel, and a timer switch 14 and a rice washing switch 15 are mounted on this wall. A timer switch 14 for setting a rice milling time according to the amount of brown rice to be milled is dial-operated. When the switch 14 is operated, the output shaft 8 is driven through the drive mechanism 10 to, for example, 2400 rpm to 300 mm.
It is rotated at 0 rpm. 1 and 2 is a switch setting table showing the standard of the amount of brown rice and the rice polishing time and the standard of the white rice amount and the rice washing time. The timer switch 14 is calibrated according to the table 16. Along with
The number of times the rice washing switch 15 is pressed is designated. The rice washing switch 15 is a push button type flash switch for operating the drive motor 4 only during the pressed time. When the switch is pressed, the energizing circuit for the drive motor 4 is switched and the output shaft is switched. Numeral 8 is rotated at, for example, 3500 rpm via the driving mechanism 10.

On the upper wall of the top cover 1c, a hollow switch convex portion 17 is formed integrally with the container mounting portion 3 so as to protrude upward toward the container mounting portion 3 side.
The opening 17a shown in FIG. A switch interlocking member (not shown) is housed in the switch projection 17 facing the opening 17a.
The switch is pushed and moved by a later-described switch operation projection inserted into a, and accordingly, a normally open safety switch (not shown) built in the apparatus main body 1 is turned on. Only when the safety switch is turned on, both the switches 14, 15
Is effective, that is, energization of the drive motor 4 is realized. In addition, 18 in FIG.
4A shows a motor cooling fan connected to the upper end of FIG.

Next, the grain processing attachment will be described. As shown in FIG. 4 and the like, this attachment includes a container 21, a separation basket 31, a stirring tool 41, a lid 5
1 is provided.

That is, as shown in FIGS. 1 to 3, on the container mounting portion 3, a bottomed cylindrical container 21 made of synthetic resin or transparent glass having an open upper surface is connected to the lower surface thereof. The container base 22 is detachably fitted to and attached to the recess 3a. The container 21 has, for example, a handle 23 projecting integrally from the outer peripheral surface of the peripheral wall 21b, and has a spout 24 protruding radially outward at an opening edge 180 ° away from the handle 23. ing. The handle 23 has, for example, a U-shape in a side view, but is not limited thereto. As shown in FIG. 3, the lower surface of the tip of the spout 24 is formed in a plane.

As shown in FIGS. 3 to 5, a bearing holder 25 is inserted through the center of the bottom wall 21a of the container 21.
Is attached to the lower end of the holder 25.
Are connected. Bearing 2 built in bearing holder 25
6, a rotating shaft 27 is supported in a vertical posture through a central portion thereof in the vertical direction. The rotating shaft 27 is disposed at the center of the container 21, and the lower end thereof has a driven side cup which is detachably engaged with the coupling 9 as the container 21 is attached to and detached from the container mounting portion 3. A ring 28 is mounted. A portion of the rotary shaft 27 above the bearing 26 forms a drive shaft 27a.

The bearing holder 25 has a holder fitting portion 25a located in the container 21. The fitting portion 25a is formed of a circular annular flange concentric with the rotation shaft 27.
Further, in the present embodiment, the container 21 has a watertight structure from the viewpoint of washing rice. For this purpose, an annular waterproof packing 29 is sandwiched between the bottom wall 21a and the bearing holder 25 as shown in FIG.
An annular waterproof packing 30 with which the rotating shaft 27 is in sliding contact is provided between the inner surface of the upper end portion and the bearing 26 and the rotating shaft 27.

Separation basket 31 which can be taken in and out of container 21
As shown in FIG. 5, FIG. 6, etc., is formed of a metal cage body 32 having an open upper surface, and a synthetic resin center cylinder 33. When the car main body 32 is made of synthetic resin, the central tubular body 33 can be formed integrally.

The car body 32 has a cylindrical cage peripheral wall 32.
The car bottom wall 32b is integrally provided at the lower end of the car peripheral wall 32a, and an annular projecting flange 34 is formed integrally with the upper peripheral edge of the car peripheral wall 32a so as to be continuous in the circumferential direction and project horizontally outward. Have been. The cage main portion of the cage body 32 excluding the projecting flange 34 has a smaller diameter than the container 21 and has a bottomed cylindrical shape shorter than the depth of the container 21. The outer peripheral portion 34a of the overhanging flange 34 projecting horizontally to the outside has an upper end opening edge 2 of the container 21.
1c is formed so as to be hooked from above. The projecting flange 34 has a lid engaging projection 34b as a detent part in a part, and this projection 34b is configured to cover the spout 24 in the present embodiment.
The outer peripheral portion 34a of the projecting flange 34 has a continuous fold over the entire periphery thereof bent toward the lower surface side, so that the outer peripheral portion 34a is prevented from touching the edge of the sheet metal with a finger.
Has a rounded end.

As shown representatively in FIG.
A large number of separation holes 35 are formed in substantially the entire area of the car peripheral wall 32a, and a large number of separation holes are formed in the car bottom wall 32b of the separation car 31 as shown in FIG. A hole 36 is provided. Each of the separation holes 35 and 36 is formed of a small hole having a size that prevents passage of polished grains, for example, white rice, contained in the separation basket 31.

As shown in FIG. 5, the central cylindrical body 33 penetrates through the center of the car bottom wall 32b of the separation car 31 and is fixed to the car bottom wall 32b with rivets 37. Both the upper and lower ends of the central cylindrical body 33 are open, but the height of the cylindrical body 33 is projected upward from the upper surface formed by the brown rice group when the maximum specified volume of brown rice is accommodated in the separation basket 31. Height. Thereby, even when the separating basket 31 is tilted and the brown rice inside flows out during and after the rice polishing, the upper part of the central cylindrical body 33 protrudes upward from the upper surface formed by the rice group, and the rice is in the central cylindrical body 33. I try not to get inside. A lower end portion of the central cylindrical body 33 protruding below the car bottom wall 32b is used as a car fitting portion 33a detachably fitted to the holder fitting portion 25a. The inner diameter A of the fitting portion 33a and the holder fitting portion 25a
Has a relation of A ≒ B.

As shown in FIG. 3, a rotating tool 41 is removably fitted to the rotating shaft 27 in the container 21 from above and is rotated together with the rotating shaft 27 according to the rotation of the output shaft 8. Have been.

As shown in FIGS. 3, 6, and 9 to 12, the stirring tool 41 includes a stirring tool main body 42 made of an integrally molded synthetic resin and a synthetic resin or light metal built in the main body 42. And a pair of blades 44, for example.

The agitator main body 42 has a cylindrical shape with an upper end closed and a lower end opened, and a shaft engaging member 43 is attached to the lower end of a central cylindrical portion 42a integrally projecting from the inner surface of the central portion of the upper end wall. Are connected. The member 43 is detachably fitted in the drive shaft portion 27a of the rotating shaft 27 in the axial direction, and is engaged so as not to rotate relatively in the circumferential direction (in other words, together with the rotating shaft 27). Caught to rotate). Therefore, the stirring tool 41 is attached to the rotating shaft 27 disposed at the center of the separation basket 31 and is rotated together with the rotating shaft 27. In this mounted state, the outer peripheral wall of the stirring tool main body 42 is The central cylindrical body 33 enters the annular gap 45 between the central cylindrical body 42a and the central cylindrical body 42a, so that the inner and outer peripheral walls of the agitator main body 42 do not come into contact with the central cylindrical body 33.

At the lower end of the outer peripheral surface of the agitator main body 42, the same number of blade connecting portions 46 as the blades 44 are provided so as to extend integrally. These connecting portions 46 are formed by integrally providing a vertical connecting end portion 48 at the edge of the overhang portion 47 as shown in FIG. 9 and the like. The connecting end portion 48 has a substantially arc shape in a plan view, and has connecting holes 48a penetrating vertically at a plurality of locations.

The pair of blades 44 are formed by bending a metal plate, for example, a stainless steel plate having excellent wear resistance, so that a cross section orthogonal to the longitudinal direction has a U-shape. Therefore, the blade 44 can be used to move the basket peripheral wall 32 without brown rice.
a, and upper and lower surfaces 44b, 44c as reinforcing ribs vertically connected to each other. The boundary between the material extruding surface 44a and the upper and lower surfaces 44b, 44c is not a sharp edge but a rounded one. Is carried. The width of the material pushing surface 44a is larger than the width of the upper and lower surfaces 44b and 44c, so that the material pushing surface 44a occupies the largest area in the blade 44. In each of the surfaces 44a to 44c, a small protrusion protruding to the front side is formed over substantially the entire area.

These blades 44 have one ends fitted over the upper and lower surfaces and the outer surface of the connecting end 48 of the blade connecting portion 46, and the upper and lower surfaces 44b, 44c.
And is connected to the connection end 48 via a plurality of rivets 49a and 49b caulked through the connection hole 48a. With this connection, both blades 44 are cantilevered by the agitator body 42, respectively. The rivet 49
A screw may be used as a fixing tool instead of the a and 49b, but the use of the rivets 49a and 49b is excellent in that there is no fear that the cantilevered state of the blade 44 is loosened. As shown in FIG. 3, the pair of blades 44 are provided such that the lower surfaces 44c are close to the car bottom wall 32b in a state where the stirring tool main body 42 is fitted and mounted on the rotating shaft 27. .

The pair of blades 44 connected to the agitator main body 42 are arranged in the separation car 31 as shown in FIG. 6, and viewed from above, from the center of the separation car 31 to the side of the car peripheral wall 32a. , Is gradually approached to the inner peripheral surface of the car peripheral wall 32a. In other words, the distance between the inner peripheral surface of the car peripheral wall 32a and the material pushing surface 44a from one end on the blade connecting portion 46 side, that is, from the root E to the free end F at the other end ( The separation cage 31 is formed, for example, in an arc shape so as to gradually reduce the distance along the radial direction of the separation cage 31). FIG.
And P in FIG. 12 is a material pushing surface 44a of the blade 44.
It shows the center of the arc formed by. Further, in the present invention, the blade 44 may be a linear one as long as the distance between the inner peripheral surface of the car peripheral wall 32a and the material pushing surface 44a is gradually reduced as described above, It may have one or more bent portions that bend in the direction.

A reinforcing rib integral with the blade 44, that is,
Each of the pair of upper and lower surfaces 44b and 44c extends over substantially the entire length of the blade 44, and the protruding width of the material pushing surface 44a toward the back surface is determined by the blade connected to the blade connecting portion 46. The root E of the 44, more precisely, the root through which the rivet 49 b has passed, is the widest, and is narrowed continuously or stepwise from the root to the free end F of the blade 44. Thereby, the cross-sectional area of each part of the blade 44 having a U-shaped cross section is set to be smaller toward the free end F than the root E of the blade 44.

As shown in FIG. 1 to FIG.
A lid 51 for opening and closing the upper end opening is detachably attached. The lid 51 made of a transparent synthetic resin is formed in a substantially circular shape and fits outside the upper edge of the upper end of the container 21. The outer periphery of the lid 51 is 180 ° apart from the handle hook 52 and the spout. Each of the hook portions 53 is provided, and an L-shaped switch operation convex portion 54 is integrally protruded toward the spout hook portion 53 side.

As shown in FIGS. 3, 7 and 8, the handle hook 52 is a molded article of an elastic synthetic resin material molded separately from the lid 51. It is fitted and attached to a member attachment portion 51a formed integrally. The hook portion 52 has a pair of opposing elastic holding pieces 52a which are detachably elastically engaged with the upper portion of the handle 23. The spout catching portion 53 serving as a detent for the separating basket 31 is formed integrally with the lid 51, and has a U-shape in plan view as shown in FIG. As shown in the figure, a hooking portion 53a having an L-shaped cross section is formed, and the back side of this portion 53a (the center side of the lid 51).
Is open.

In order to attach the lid 51 to the container 21, first, the spout hooking portion 53 is tilted forward with respect to the container 21 in which the stirring tool 41 and the separating basket 31 are accommodated. After the hook portion 53a is hooked on the lower surface of the spout 24 of the container 21, the handle hook 52 may be pushed down and pivoted with the spout 24 as a fulcrum. As a result, with the elastic deformation of the elastic holding piece 52a of the handle hooking portion 52, the lower end side of the handle
At the end of the passage, the elastic holding pieces 52a elastically return so as to approach each other, and elastically hold the upper part of the handle 23 while giving a force to draw the lid 51 downward. Container 21 and basket 3
A cover 51 is attached so as to cover 1. By attaching the lid 51 to the container 21, the upper edge 21 of the container 21 is opened.
c and the projecting flange 34
Is sandwiched. Conversely, the lid 51 can be removed from the container 21 by pushing up the handle hook 52 and removing it from the handle 23, and then removing the spout hook 53 from the spout 24. it can.

In FIGS. 1 to 3, 7 and 8,
Reference numeral 55 denotes a cover protrusion integrally formed on the lid 51 and protruding in the vicinity of the upper side of the handle hook 52, and is provided at a position suitable for pushing up the handle 23 with the thumb of one hand. Therefore, the provision of the cover convex portion 55 is equivalent to that of the cover 51.
It is excellent in that the push-up operation when opening can be easily performed with the thumb. The lid 51 is provided with a large number of ventilation holes 56 over the entire area excluding the peripheral portion thereof, and has a downwardly projecting stopper projection 57 integrally formed on the rear surface of the central portion. Providing a small air hole 56 that does not allow rice to pass through is effective in releasing the heat generated with the polished rice to the outside, lowering the temperature of the polished rice and preventing the polished rice from drying too much. is there. In addition, the stopper projection 57 hits the upper surface of the stirring tool 41 and prevents the lid 51 from being attached when the stirring tool 41 is not properly attached to the rotating shaft 27, thereby allowing the stirring tool 41 to be set properly. This is effective in that it can be forced to do this. Further, an annular rib 58 is provided on the inner surface of the peripheral portion of the lid 51, and the tip thereof is provided close to the upper surface of the base of the overhanging flange 34 with a gap equal to or less than the size of rice,
This prevents rice from accumulating on the upper surface of the overhang flange 34.

Next, a case where a cereal grain such as brown rice is polished will be described. First, the separation basket 31 is inserted into the container 21 of the grain processing attachment placed on the apparatus main body 1 or separated from the apparatus main body 1 through the opening at the upper end thereof. 21 is housed in the upper opening edge 21c until it is hooked from above. Thereby, the car main body 32 of the separation car 31 is housed in a state of being suspended in the container 21.

In this storage, the separating basket 31 is positioned with respect to the container 21 so that the lid engaging projection 34b of the overhang flange 34 covers the spout 24 of the container 21 (see FIG. 6). In addition, at the time of the accommodation, the separation basket 3
The cage fitting portion 33a of the central cylindrical body 33 of the
Since the fitting is performed on the outer periphery of the holder fitting portion 25a on the first side, the fitting allows the separation cage 31 to be centered in the radial direction with respect to the container 21 and the holder fitting portion is provided in the central cylindrical body 33. The drive shaft portion 27a side of the rotating shaft 27 that penetrates the bearing holder 25 having the shaft 25a in the axial direction is inserted.

FIG. 5 shows the storage state of the separation basket 31. In this storage state, the car peripheral wall 32a of the car main body 32 is arranged away from the inner peripheral surface of the peripheral wall 21b of the container 21, and the car bottom wall 32b of the car main body 32 is also separated from the inner surface of the bottom wall 21a of the container 21. Since it is arranged, between the car body 32 and the container 21, the car body 32
An air gap which is continuous over the sides and below and communicates with the inside of the car body 32 through the respective separation holes 35 and 36, that is, a bran chamber C for storing bran separated from brown rice is formed. The upper end opening of the bran chamber C is closed by the overhang flange 34 of the separation basket 31 hooked on the upper end opening edge 21c of the container 21.

Next, the stirring tool 41 is accommodated in the separating basket 31 through the upper end opening thereof, and the central cylindrical portion 42a is fitted to the driving shaft portion 27a of the rotating shaft 27, and the shaft engaging member 43 is driven. It is attached by engaging with the shaft 27a. FIG. 6 shows a state in which the stirring tool 41 is attached to the rotating shaft 27 in this manner. In this mounting state, the separation basket 31 is centered on the container 21 as described above,
The blade 4 of the stirring tool 41 attached to the rotating shaft 27
4 does not interfere with the car peripheral wall 32a of the separation car 31.

Thereafter, a desired amount of brown rice is stored in the separating basket 31, and then the lid 51 is attached to the upper end opening of the container 21 by using the handle 23 and the spout 24 according to the above-described mounting procedure. The lid 51 is attached to the upper end of the container 21 to cover the upper opening of the separating cage 31, and the projecting flange 34 of the cage 31 is sandwiched between the upper edge 21 c and the periphery of the lid 51. The separation basket 31 is held so as not to move in the vertical direction. The spout port 24 of the lid 51 is hooked on the spout 24 of the container 21 covered with the lid engaging projection 34b of the overhang flange 34, and the hook portion 53a of the hook portion 53 is hooked. Are positioned so as to contact the base portion D (see FIG. 6) of the lid engaging projection 34b from both sides in the width direction, so that the separation cage 31 is prevented from rotating in the circumferential direction by these engagements. Is done. Therefore, it is possible to prevent the separation basket 31 from inadvertently shaking during the rice polishing described below. The state of the grain processing attachment assembled as described above is shown in FIG.

Next, this attachment is attached to the apparatus main body 1.
Attach to In this case, the container mounting portion 3
Even when the container 21 is placed on the container 21 or when the attachment is assembled in a state where the container 21 is detached from the apparatus main body 1, first, as shown in FIGS.
After the handle 23 is placed on the container mounting portion 3 in a position opposite to the top cover 1c of the apparatus body 1, the handle 23 is moved toward the top cover 1c in the direction of the arrow in FIG. The attachment to the apparatus main body 1 is performed by rotating the entire attachment. FIG. 2 shows a state in which the mounting is completed. In this mounting state,
As shown in FIG. 3, the drive-side coupling 9 and the driven-side coupling 28 are engaged with each other, and
Connected to a state where power can be transmitted to the stirring tool 41 from the side, and the inner peripheral surface of the concave portion 3a and the container table 2 are connected.
The container 21 is prevented from slipping out of the container mounting portion 3 by the not-shown hooking with the outer peripheral surface of the container 2.
Further, the switch operation convex portion 54 of the lid 51 enters the opening 17a of the switch convex portion 17 of the apparatus main body 1 as shown in FIG. 2, and the safety switch (not shown) is held in the ON state.

After the above setting is completed, the rice milling switch, that is, the timer time of the timer switch 14 is set in accordance with the amount of brown rice put into the separating basket 31, so that the bran having a dry structure as described below is obtained. , Ie, milled rice (milled) or polished rice (milled).

That is, the drive mechanism 10 in the apparatus main body 1 is operated, and the rotation of the output shaft 8 is controlled by the couplings 9, 28.
Is transmitted to the rotation shaft 27 via the shaft 27, and the stirring tool 41 is rotated in the separation car 31 together with the shaft 27. The arrow in FIG. 6 indicates the rotation direction. Therefore, this stirring tool 41
By the material pushing surfaces 44a of the pair of blades 44, the rice in the separation basket 31 is extruded toward the cage peripheral wall 32a while receiving the rotational force. The brown rice in the separating basket 31 is stirred by the high-speed rotation of the stirring tool 41 in the separating basket 31, so that the brown rice in the separating basket 31 cannot pass through due to the centrifugal force caused by the rotating motion of the rice. Car peripheral wall 32 having a large number of separation holes 35
It rotates while being pressed against the inner peripheral surface of a.

In this case, the blade 44 is
1 has a shape, for example, an arc shape, which retreats in the rotation direction so as to gradually approach the inner peripheral surface of the car peripheral wall 32a of the separating cage 31 from the central portion to the outer peripheral portion. The rice can easily escape along the arcuate outer surface of the rice. Therefore, while the rice is in contact with the material extruding surface 44a of the blade 44 facing the car peripheral wall 32a of the separating car 31 to reduce the impact force of the rice and reduce the damage of the rice, the blade 44 causes the rice to be moved to the inner periphery of the car peripheral wall 32a. The rice is smoothly extruded toward the surface, whereby the rice can be stirred in the separating basket 31 while pressing the rice against the inner peripheral surface of the car peripheral wall 32a.

Further, the area of the material extruding surface 44a is larger than the area of the upper and lower surfaces 44b and 44c and is the largest among the blades 44, and rice is extruded toward the basket peripheral wall 32a by such a large extruding area. Agitator 4
The pushing of the rice by the blade 41 in the direction of the car peripheral wall 32a with the rotation of 1 is more easily performed, and therefore, the stirring performance of the rice in the separating car 31 is good. Moreover, there is no sharp edge at the boundary between the material pushing surface 44a of the blade 44 and the upper and lower surfaces 44b, 44c connected thereto, and the boundary is rounded. It can be prevented from being scraped off. If the boundary has a steep edge, the rice that is to be extruded in the direction of the car peripheral wall 32a with the rotation of the blade 44 is scraped more than necessary due to contact with the edge.

As described above, the rice that is rotated at a high speed with the rotation of the stirring tool 41 rotates while being pressed against the inner peripheral surface of the car peripheral wall 32a of the stationary separating car 31 by the action of the centrifugal force. After moving toward the upper side of the inner peripheral surface of the car peripheral wall 32a, the rice is moved toward the car bottom wall 32b at the center of the separation car 31 by gravity, so that the rice in the separation car 31 is vertically convected ( (Indicated by an arrow in FIG. 3).

Therefore, the rubbing of the brown rice with the stirring and the rubbing of the brown rice with the separating basket 31 and the stirring tool 41 are performed so that the bran layer of the brown rice is removed first, followed by polishing. The bran removal (polished rice) is performed on the polished rice (white rice). At the same time, the centrifugal action on the produced bran is
2b, the bran passes through the separation hole 35 and reaches the bran chamber C between the car peripheral wall 32a and the container 21. From this portion, the bran chamber C at the bottom of the container 21 is formed.
Stored in parts. Similarly, the car bottom wall 3 is
Regarding the brown rice pushed and moved along 2b, a large number of separation holes 36 provided in the basket bottom wall 32b for preventing passage of rice are provided.
Can be separated from the rice, and the bran separated through the separation holes 36 is stored in the bran chamber C at the bottom of the container 21. Then, with the separation of the rice bran, the rice from which the bran has been removed remains in the separation basket 31. In this case, in the rubbing between the brown rice and the respective surfaces 44a to 44c of the blade 44, the skin layer of the brown rice can be efficiently rubbed by the small projections provided on the respective surfaces 44a to 44c.
The time required for milling, and thus the time required for dry processing of grains from milling to polishing can be shortened.

Moreover, the arc-shaped blade 44 of the stirring tool 41 of the present embodiment is connected only to the end of the stirring tool main body 42 side (the front side in the rotation direction) to the stirring tool main body 42, and The blade 44 is free-standing at the rear side in the rotation direction of the blade 44 and is not connected to the agitator main body 42. Therefore, unlike the case where both ends and the intermediate portion of the blade 44 are supported by the stirring tool main body 42 with a plurality of ribs, the portion where the bran separated from the rice adheres (the ribs) is small, so that the stirring tool 41 is used.
It is possible to reduce the adhesion of the bran to the rice cake, so that the cleaning of the stirring tool 41 after use can be facilitated.

In addition, since the blade 44 is cantilevered, a space indicated by reference symbol S in FIG. 6 can be secured between the free end side of the blade 44 and the agitator main body 42. Therefore, the number of the separation holes 36 in the car bottom wall 32b covered by the blade connection portion 46 decreases, and accordingly,
Separation hole 3 in rice and basket bottom wall 32b located in space S
Since the chance of contact with the paddle 6 increases, the separation performance of the bran in the separation hole 36 can be improved.

In the above-described rice milling operation, the blade 44 of the stirring tool 41 rotated at a high speed in the separating basket 31 exerts a centrifugal force as the brown rice is stirred. Material extrusion surface 44
The blade 44 receives a force in the direction of the back surface of the blade 44 in accordance with the density of brown rice sandwiched between a and the inner peripheral surface of the separating basket 31.
Since the directions of action of these centrifugal force and the force in the direction of the back surface are opposite to each other, the load is repeatedly applied to the root portion E of the blade 44 cantilevered by the agitator 41 in the front and back direction. .

However, since the durability of the blade 44 is excellent for the following reasons, it is possible to reliably prevent the blade 44 from being damaged at the root E regardless of the repetitive load.

That is, the width of the upper and lower surfaces 44b and 44c as reinforcing ribs for reinforcing the strength of the blade 44 itself is gradually narrowed toward the free end F side from the root portion E of the blade 44, so that, in the end, , The cross-sectional area of the root E along a direction perpendicular to the longitudinal direction of the blade 44,
The strength of the root portion E can be increased by securing it larger than other portions. In addition, since the cross-sectional area of the cantilever blade 44 is smaller on the free end F side than the root E,
The mass on the free end F side is reduced, and the centrifugal force acting on the root E can be reduced accordingly. In addition, the blade 44 becomes more flexible toward its free end F in accordance with the change in the cross-sectional area. Therefore, when the free end F of the blade 44 receives a load in the direction of its back surface, the free end F is easily bent. By bending, the load can be prevented from being concentrated on the root E of the blade 44.

As described above, in combination with the fact that the strength of the root portion E of the blade 44 is high, it is possible to reduce the repetitive load that fluctuates in the front and back directions of the blade 44 acting on the root portion E with the turning of the brown rice. The durability of the root E of the blade 44 is improved, and the blade 44 can be reliably prevented from being damaged at the root E.

Unlike the configuration of the blade 44, a blade having a large material thickness and a uniform width of the upper and lower surfaces, in other words, a blade having the same cross-sectional area in each part of the blade is used. As a result, the mass of the free end side increases, and the centrifugal force increases accordingly, and the rigidity of the free end side becomes high, making it difficult to bend. As a result, the repetitive load on the root of the blade eventually increases, and although the strength of the root of the blade is increased, the blade may be damaged there, and the durability as in the present embodiment is obtained. It is difficult.

The blade 44 of the agitator 41 in this embodiment is made of stainless steel in order to obtain the necessary abrasion resistance, but has the required strength in a U-shaped cross section. Can be made of a thin stainless steel plate, and accordingly, the stirring tool 41 can be reduced in weight. Therefore, the load on the drive mechanism 10 can be reduced, and the vibration and noise due to the imbalance of the agitator 41 can be suppressed low.

Further, the rice is polished or polished and separated into baskets 31.
The removal of the bran in the rice bran chamber C left inside may be performed by the following procedure. First, in a state where the lid 51 is removed from the upper end of the container 21 in the above-described procedure, the separating basket 31 is removed from the container 21 upward, and then the stirring tool 41 in the basket 31 is removed. An operation such as inverting 31 can be easily performed in a state independent of the container 21 and the apparatus main body 1 without being restricted by the container 21 and the apparatus main body 1, whereby the white rice in the separation basket 31 can be removed. . As described above, the separation basket 3 from the container 21
1 is taken out in a state in which the stirring tool 41 is accommodated in the separation basket 31. Therefore, the stirring tool 41 is removed.
The central cylinder 33 of the separating basket 31 is covered by the above, so that even in a large amount of rice, the rice in the separating basket 31 does not leak through the cylindrical portion 33. In addition, the bran stored in the container 21 can be easily taken out of the container 21 without being disturbed by the separation cage 31 due to the removal of the separation cage 31 described above.

Further, in this embodiment, since the container 21 can be detached from the apparatus main body 1, the container 21 can be carried to the sink alone without being restricted by the apparatus main body 1 to take out bran and clean the inside of the container 21. Can be easily performed.

In the rice mill of this embodiment, the rice can be washed after the above-described removal of the bran after the rice polishing with the removal of the bran. In this rice washing, after the white rice in the separating basket 31 removed outside the container 21 is lightly wetted with water and drained, the separating basket 31 is set in the container 21 again, and the grain is prepared by the assembling procedure described above. This is performed by assembling the processing attachment and setting it in the apparatus main body 1. In the operation in this case, the timer switch 14 is not used,
The rice washing switch 15 is momentarily pressed several times in accordance with the amount of white rice in the separation basket 31, and the drive motor 4 is intermittently operated. Thereby, the stirring tool 41 is stirred without excessively shaving the white rice, and the rice is washed. Then, after this, according to the removal procedure described above, the separation basket 31 is taken out together with the white rice, and the stirring basket 41 is removed from the inside of the separation basket 31 while the separation basket 31 is immersed in water in the sink, and the white rice is gently lightened. The rice washing operation is completed by rinsing.

According to the rice treatment as described above, the bran is separated from the rice in the polished or polished rice. Therefore, even when the rice is washed manually without using the rice washing operation using the rice mill, Also, when performing the rice washing operation using the rice milling machine, since the amount of bran contained in the rinsing water is extremely small, the rice absorbs the water containing the bran dissolved in the rice washing so that the rice becomes a rice bran odor. Can be suppressed. Therefore, rice can be cooked deliciously by the subsequent rice cooking.

FIGS. 13A and 13B show a second embodiment of the present invention. In the second embodiment, the blade 44 having an arc shape in a plan view is a synthetic resin stirring tool main body 4.
It is integrally molded and cantilevered at the tip of the second blade connecting portion 46. This blade 44 is shown in FIG.
And upper and lower surfaces 44b and 44c as reinforcing ribs protruding so as to be bent in the direction of the back surface of the material pushing surface 44a are formed integrally on both upper and lower edges of the vertical material pushing surface 44a, as shown in FIG. Material extrusion surface 4
4a, it is provided integrally and continuously with the blade connecting portion 46 on the back surface of one end. As shown in FIG. 13A, the width of each of the upper and lower surfaces 44b and 44c is formed so as to gradually decrease toward the free end F side from the root E of the blade 44. Therefore, the cross-sectional area in the direction perpendicular to the longitudinal direction of the blade 44 is
4 becomes smaller gradually toward the free end F side than the root portion E. In the second embodiment, a metal plating layer may be provided on the surface of each surface 44a to 44c of the blade 44. In this case, since the surface of the synthetic resin blade 44 has a hard and dense structure, wear of the surface of the blade 44 due to contact with brown rice can be prevented, and the appearance of the stirring tool 41 can be improved. Excellent in point. The configuration of the rice polishing machine and the milling tool 41 other than the points described above is the same as that of the first embodiment, including the parts not shown in FIGS. 13A and 13B. The same reference numerals are given to the corresponding parts in the embodiment.

Also in the second embodiment, the blade 4
Due to the change of the cross-sectional area from the root E to the free end F of 4,
The same effect as in the first embodiment can be obtained to solve the problem of the present invention. Moreover, in the second embodiment, since the blade 44 is formed integrally with the agitator main body 42, there is also an advantage that the fixing component for connecting and supporting the blade 44 to the agitator main body 42 and the work of attaching the same are omitted. .

FIGS. 14A and 14B show a third embodiment of the present invention. In the third embodiment, the blade 44 having an arc shape in a plan view is provided with a synthetic resin stirring tool main body 4.
It is integrally molded and cantilevered at the tip of the second blade connecting portion 46. The thickness of the blade 44 along the front and back directions is gradually reduced toward the free end F side from the root E of the blade 44. Therefore, the blade 44
The cross-sectional area in the direction orthogonal to the longitudinal direction of the blade 44 gradually decreases toward the free end F side from the root E of the blade 44. Therefore, the blade 44 has an arc-shaped outer surface, that is, a material pushing surface 44a, and has upper and lower surfaces 44b and 44c connected to upper and lower edges of the surface 44a. In the third embodiment, a metal plating layer may be provided on the surface of each surface 44a to 44c of the blade 44. Also, as shown in FIG. 14, a cover member 50 made of a metal thin plate having a U-shaped cross section may be provided. Each of the surfaces 44a to 44c
The blade 44 may have a double-layered structure of a synthetic resin blade main body exhibiting the above-mentioned thickness change and a metal thin plate cover member 50. The two-piece structure is excellent in that the cover member 50 can prevent the blade main body from being worn due to contact with brown rice and can improve the appearance of the stirring tool 41. The configurations of the rice milling machine and the milling tool 41 other than those described above are the same as those of the first embodiment, including portions not shown in FIGS. 14A and 14B. The same reference numerals are given to the corresponding parts in the embodiment.

In the third embodiment, the blade 4
Due to the change of the cross-sectional area from the root E to the free end F of 4,
The same effect as in the first embodiment can be obtained to solve the problem of the present invention.

The present invention is not limited to the above embodiments. For example, even if the grain processing attachment of the above-described configuration is attached to an existing food processor or a new food processor having a switch capable of switching the rotation speed of a drive motor between cooking and rice polishing, the above-described rice polishing and bran removal are performed. In this case, the versatility of the food processor can be improved.

The present invention is not only applied to milled rice, but it is possible to carry out milling or grain grinding on grains other than rice in the same manner as milled rice.
In the present invention, the rice washing switch employed in the first embodiment may be omitted. When the cross-sectional area of the blade is changed by the reinforcing ribs, the reinforcing ribs may be different from the upper and lower surfaces of the blade.

Further, the present invention can be applied to the following. That is, on the upper side of the container that is removably mounted on the container mounting portion of the apparatus main body, a rotation shaft that is rotated by the drive mechanism of the apparatus main body and that can move up and down is provided downward,
A stirring device is connected to this shaft, and a rotating shaft and a stirring device are inserted from above into a separating basket housed in a container so as to be freely taken in and out, and the container and the device main body are connected, and the driving mechanism is operated in this state. By doing so, the present invention can be applied to a grain processing apparatus that simultaneously removes grain and bran such as brown rice. In this case, it is not necessary to provide a rotating shaft in the container, and a structure in which the rotating shaft passes through the bottom wall of the separating cage is not required.

Further, in each of the above embodiments, the rotation of the separating car with respect to the container is prevented by the lid attached to the container. However, the means for preventing the separating car from rotating with respect to the container can be provided separately from the lid. Also, providing a lid is effective to prevent the grains repelled by the blade of the stirring tool from jumping out of the separating basket, but when the basket body of the separating basket is deep, the lid is used. May be omitted. Further, in the present invention, the container is not separate from the apparatus main body as in the first embodiment, and may be provided integrally so as not to be detachable from the apparatus main body.

[0077]

The present invention is embodied in the form described above and has the following effects.

According to the agitator for a grain processing apparatus according to the first to fourth aspects of the present invention, the strength of the root portion of the cantilever blade is high, and the agitation is accompanied by the agitation of the grain. Since the repetitive load acting on the root in the front and back directions of the blade is small, breakage of the blade due to agitation of the grain can be reliably prevented.

According to a grain processing apparatus according to the fifth aspect of the present invention, the grain processing apparatus according to the first to fourth aspects of the present invention is provided with a stirring tool for a grain processing apparatus. The first problem can be solved by performing processing such as graining or grain washing.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire rice mill according to a first embodiment of the present invention.

FIG. 2 is a plan view of the rice mill shown in FIG.

FIG. 3 is a sectional view of the rice mill shown in FIG. 1;

FIG. 4 is an exploded sectional view showing the grain processing attachment of the rice mill shown in FIG. 1;

5 is a cross-sectional view of a state in which a separation basket is accommodated in a container provided in the grain processing attachment shown in FIG.

FIG. 6 is a plan view showing a state in which a separating basket and a stirring tool are accommodated in a container provided in the grain processing attachment shown in FIG. 4;

FIG. 7 is a perspective view of the grain processing attachment shown in FIG.

FIG. 8 is a view showing a combined state of a container and a lid included in the grain processing attachment shown in FIG. 4;

9 is an exploded perspective view showing a part of the stirring tool provided in the grain processing attachment shown in FIG. 4;

FIG. 10 is a bottom view of the scraper shown in FIG. 9;

FIG. 11 is a side view showing a partly sectional view of the scraper shown in FIG. 9;

FIG. 12 is a plan view of the stirring tool shown in FIG. 9;

FIG. 13A is a plan view showing a stirring tool provided in a grain processing device according to a second embodiment of the present invention. (B) is a side view which shows the stirring tool shown in FIG. 13 (A) in partial cross section.

FIG. 14A is a plan view showing a stirring tool provided in a grain processing device according to a third embodiment of the present invention. (B) is a side view which shows the stirring tool shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Device main body, 3 ... Container mounting part, 10 ... Drive mechanism, 21 ... Container, 27 ... Rotating shaft, 31 ... Separation basket, 35, 36 ... Separation hole, 41 ... Stirring tool 42 ... Stirring tool main body, 44 ... 44a: Upper surface of the blade (reinforcement rib), 44c: Lower surface of the blade (reinforcement rib), 46: Blade connection portion, C: Nuka chamber, E: Root portion of the blade, F: Free end of blade.

Claims (5)

[Claims] An upper end opening having a plurality of separation holes, wherein a bran chamber is formed between the container and an inner surface of the upper end opening having a rotating shaft disposed in a central portion thereof and which is removably accommodated therein. A stirring tool main body disposed in the separation basket and attached to the rotating shaft; and a material pushing-out surface having a vertical material pushing surface and being cantilevered by the stirring tool body toward the free end. And one or more blades provided so as to reduce the distance between the separation basket and the inner peripheral surface of the separation basket, wherein the grains contained in the separation basket are stirred and the bran is transferred from the grains to the bran chamber. A graining device for a grain processing device that separates the blade, wherein the cross-sectional area of the blade is smaller toward the free end side than the root portion of the blade supported by the blade coupling portion of the bladed tool body. Features for grain processing equipment A scraper. 2. The stirring tool for a grain processing device according to claim 1, wherein a change in the cross-sectional area of the blade depends on a change in the thickness of the blade in the front and back directions. 3. The grain processing apparatus according to claim 1, wherein a change in a cross-sectional area of the blade is dependent on a change in a width of a reinforcing rib integrally projecting from a back surface of the blade. A scraper. 4. The method according to claim 1, wherein the reinforcing ribs are bent on the upper and lower edges of the material extruding surface in the rear direction, and the blade made of a metal plate has a U-shaped cross section orthogonal to the longitudinal direction. The stirring tool for a grain processing device according to claim 3, wherein: 5. An apparatus main body in which a drive mechanism for rotating a rotating shaft is incorporated, and provided integrally with the apparatus main body or separately from the apparatus main body and detachably attached to the apparatus main body; A container having an open upper end, a separation basket having a number of separation holes, and a bran chamber formed between the container and an inner surface of the container so as to be removably accommodated in the container; 2. The method according to claim 1, wherein the rotating shaft is detachably attached to a rotating shaft disposed in the separating car and is rotated in the separating cage.
A grain processing device comprising: the stirring tool according to any one of 4 to 4.