JP3781989B2 - 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 processing of the bran.
[0002]
[Prior art]
In a small rice mill used for home use, a method has been adopted in which the rice bran generated with the rice milling is naturally dropped through a rice milling screen into a bran receiving container (for example, see JP-A-8-19745). .
[0003]
On the other hand, in a large rice mill for commercial use, the bran sucked by the blower is sent to the cyclone from the bran collecting part below the rice milling screen, and the bran separated by rotating the pressure with a positive pressure in the cyclone is placed in the bran receiving container. The method of dropping was taken (for example, refer Unexamined-Japanese-Patent No. 11-57506).
[0004]
[Problems to be solved by the invention]
However, as in the case of the above-mentioned domestic rice milling machine, the type that allows the bran to fall naturally below the milling screen is not easily dropped from the milled rice that is sandwiched between the grains of rice grains or adhered to the grains. In some cases, rice grains after milling are easily mixed with rice bran.
[0005]
On the other hand, the type of rice bran that uses a cyclone to separate the bran like the above-mentioned commercial rice mill can remove the bran sandwiched between the grains of rice grains and the bran attached to the particles. There is an advantage that rice bran is not easily mixed with rice grains after the completion of the rice polishing, and a clean rice finish is obtained. However, since the bran processing unit consisting of a cyclone and bran receiving container is installed outside the rice mill, even if such a structure is simply downsized and applied to a domestic rice mill, Since the processing unit is attached, there is a problem of lack of compactness. In addition, since the bran collecting unit sends air-blown bran to the cyclone with a blower, the inside of the cyclone becomes positive pressure, and moisture is dissipated into the external space from the gap between the cyclone and the bran receiving container below it. There are also inconveniences. This is a problem when used in a home kitchen or the like.
[0006]
Then, this invention makes it a subject to provide the domestic rice mill which can obtain the clean rice finishing which is hard to mix with rice bran, satisfy | filling the request | requirement of compactness etc. which are requested | required as a domestic rice mill.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention comprises a circulation passage that communicates the discharge port of a rice hopper with a rice milling chamber and returns from the exit of the rice milling chamber to the rice hopper through a return passage. Rice milling was performed while circulating the introduced rice grains in the circulation path, and the rice grains after the completion of the rice milling were opened in the take- out port below the discharge port and received in the rice receiving container, and generated in the rice milling room. In a circulating household rice mill that passes rice bran through a rice milling screen and discharges it to the rice bran collecting unit, and receives the rice bran in the rice bran receiving container attached to the rice receiving container, a cyclone is placed on the rice bran receiving container. A configuration in which the bran discharged from the bran collecting part is introduced into the cyclone, and the bran separated from the air in the cyclone is received by the bran receiving container. And use.
[0008]
According to the above configuration, the rice bran generated by the rice milling action is sucked and removed to the cyclone side, so that a rice milling finish with little mixing of rice bran can be obtained. Further, since the cyclone is provided on the upper part of the bran receiving container, it is possible to adopt the bran separating function by the cyclone while maintaining the basic structure and compactness of the domestic rice milling machine.
[0009]
Also, a bran introduction port is provided in the peripheral wall of the cylindrical portion of the cyclone, an air discharge port is provided in the central portion of the upper wall of the cylindrical portion, a suction fan is connected to the air discharge port, and a bran discharge port is provided in the lower portion of the cylindrical portion. A configuration in which a tapered portion is provided and the tapered portion is inserted into the bran receiving container can be employed. According to this structure, there is a degree of freedom in selecting the installation position of the suction fan, and the height of the cyclone head can be lowered by the amount of insertion of the tapered portion into the bran receiving container. Furthermore, since the inside of the cyclone has a negative pressure, it is possible to prevent the internal bran mixed air from being discharged from between the cyclone and the bran receiving container to the outside of the rice mill.
[0010]
By adopting a structure in which a filter for removing bran is provided between the air outlet of the cyclone and the suction fan, it is possible to more reliably prevent air from being mixed into the outside of the rice milling machine.
[0011]
In addition, if the structure which provided the notch for preventing interference with the taper part of the said cyclone in the rear end wall of the said bran receptacle container, when pulling out the bran container, it will interfere with a taper part at the notch part. It can be freely put in and out.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIG. 1 and FIG. 2, the rice milling machine according to the embodiment has a rice milling motor 3 mounted on the bracket 2 of the machine base 1 with a certain gradient and a rice milling roll 4 mounted on the motor shaft. It extends obliquely upward with the gradient. Rice hoppers 6 of the upper surface opening in the casing 5 in the upper part is provided, the inlet 9 of rice milling chamber 8 is communicated with the one side of the discharge port 7 of the lower end portion.
[0013]
The rice milling chamber 8 is provided in an inclined state along the lower part of the rice milling hopper 6 with the same gradient as that of the rice milling roll 4, and an outlet 10 at the upper end thereof is opened to a vertical return passage 11. The upper end portion of the return passage 11 communicates with the return port 12 of the rice hopper 6. Thereby, the circulation channel | path through which rice grains circulate in order of the rice milling hopper 6, the discharge port 7, the rice milling chamber 8, the return channel | path 11, and the return port 12 is comprised.
[0014]
A take-out port 13 is provided below the discharge port 7, and a shutter 14 is provided in the take-out port 13. The lower part of the shutter 14 leads to a rice receiving container 15 for storing the polished rice grains. The lower part of the rice milling chamber 8 is open in the length direction and faces the bran collecting part 16.
[0015]
As shown in FIG. 4, the shutter 14 is formed in a bowl shape so as to surround the lower half of the rice mill roll 4 between the discharge port 7 and the extraction port 13 of the rice hopper 6. A hinge shaft 18 provided in the chamber 8 is rotatably supported. The hinge shaft 18 is manually operated by bending a handle 19 on the front surface of the rice milling chamber 8, but it may be automatically operated.
[0016]
A cylindrical rice milling screen 21 is inserted into the rice milling chamber 8 so as to be freely inserted and removed. One end of the rice milling screen 21 becomes the inlet 9 of the rice milling chamber 8 and the other end becomes the outlet 10. The rice milling screen 21 is formed by abutting and integrating a flanged semi-cylindrical body, and positioning collars 22 and 22 'are formed vertically. A large number of slits are formed in the cylindrical portion, and the bran is discharged from the slits.
[0017]
The side of the bran collecting part 16 communicates with the cyclone 24 via a horizontal communication path 23 (see FIG. 3). The cyclone 24 is fixed to the casing 5 by a bracket 25. The cyclone 24 includes a cylindrical portion 26, a tapered portion 27 provided below the cylindrical portion 26, and a cylindrical air discharge port 29 provided in the central portion of the partition wall 28 on the upper surface of the cylindrical portion 26. The air outlet 29 is an outlet for air separated from bran. The communication passage 23 is connected to an introduction port 30 provided on the peripheral wall of the cylindrical portion 26. A bran receiving container 31 is provided below the tapered portion 27 so as to be slidable in the front-rear direction along with the rice receiving container 15 (see FIG. 3). The bran receptacle 31 is provided with a notch 32 (see FIG. 2) on its rear end wall that can pass without interfering with the taper portion 27.
[0018]
A filter chamber 33 is provided on the partition wall 28, and a filter 34 is interposed therein. One end of a suction hose 36 as a suction passage is connected to a joint portion 35 provided on the upper wall of the filter chamber 33. The other end of the suction hose 36 is connected to a suction fan 37.
[0019]
As shown in FIG. 1, the suction fan 37 is fixed to the machine base 1 with a bracket 38 with the same mounting angle at a position close to the rice milling motor 3 described above, and between the pulley 39 of the rice milling motor 3. It is driven by the belt 41 that is stretched.
[0020]
In addition, the code | symbol 42 of FIG. 1 shows the whiteness degree sensor provided in the middle of the return channel | path 11. As shown in FIG.
[0021]
The household rice milling machine of the embodiment is configured as described above, and rice grains (brown rice) are put into the hopper 6 and the rice milling motor 3 is driven to perform the rice milling. Rice grains in the hopper 6 are introduced into the milled rice chamber 8 through the discharge port 7. In the rice milling chamber 8, the rice grains are fed between the rice milling roll 4 and the rice milling screen 21 by applying the force in the reverse feeding direction while feeding the rice grains by the rice milling roll 4 and further applying the gravity due to the rise of the return passage 11. The rice milling action is performed by causing friction.
[0022]
Simultaneously with the above-described rice milling operation, the suction fan 37 is driven by the rice milling motor 3. Thereby, a negative pressure acts on the bran collecting part 16 through the cyclone 24, and the bran mixed in the bran collecting part 16 is sucked together with the bran in the bran collecting part 16 through the slit of the rice milling screen 21. The sucked bran is introduced into the cyclone 24 together with the air, and rotates along the inner peripheral wall at the cylindrical portion 26. Under the centrifugal force accompanying the rotation, the bran is separated and gathers on the inner peripheral wall side, and air gathers in the center. The separated air is sucked into the suction fan 37 through the air discharge port 29, the filter 34, and the suction hose 36, and released to the outside of the casing 5.
[0023]
When it is automatically or artificially recognized that the predetermined milling degree has been reached, the milling action is stopped, the shutter 14 is opened, and the milled rice grains are discharged into the rice receiving container 15 to complete the milling.
[0024]
The filter 34 is provided to prevent the nudity from being discharged to the outside of the casing 5 when the noodle separation is insufficient. It is desirable to replace the filter 34 for care.
[0025]
In addition, the bran generated in the rice milling chamber 8 due to the above-described rice milling action is not only dropped naturally but also actively sucked, so that the rice bran sandwiched between the grains of rice grains in the rice milling chamber 8 The bran adhering to the rice bran or the bran adhering to the rice milling screen 21 is removed by suction.
[0026]
From a structural aspect, since the suction fan 37 is provided on the exhaust side of the cyclone 24 via the suction hose 36, the rice receiving container 15 and the bran receiving container 31 are arranged below the rice milling chamber 8. The basic structure of a home-grown rice mill can be maintained. Furthermore, since the cyclone 24 is provided on the upper portion of the bran receiving container 31 and the tapered portion 27 is inserted into the bran receiving container 31, an increase in substantial volume due to the provision of the cyclone 24 can be prevented. . Further, the suction fan 36 can be freely selected and attached at an appropriate position in the rear part in the casing 5.
[0027]
【The invention's effect】
As described above, according to the present invention, it is possible to obtain a polished rice finish with little mixing of bran and a cyclone is provided on the upper part of the bran receiving container, so that the basic structure and compactness of a domestic rice mill can be maintained. be able to.
[0028]
In addition, by adopting a configuration in which the air outlet of the cyclone is connected to a suction fan, it is possible to select the installation position of the suction fan, and the configuration in which the tapered portion of the cyclone is inserted into the bran receiving container is adopted. As a result, the height of the cyclone head can be lowered by the amount of insertion, and a compact design becomes possible. Further, since the inside of the cyclone has a negative pressure, air mixed with bran is not released to the outside from between the cyclone and the bran receiving container.
[0029]
Note that by providing a bran removing filter between the air outlet of the cyclone and the suction fan, it is possible to more reliably prevent the release of air mixed with bran to the outside. In addition, by providing a notch for preventing interference with the tapered portion of the cyclone on the rear end wall of the bran receiving container, it becomes possible to pull out and insert the bran receiving container while maintaining the overall compactness. .
[Brief description of the drawings]
FIG. 1 is a longitudinal side view of the embodiment. FIG. 2 is a longitudinal front view of the same. FIG. 3 is a partially omitted perspective view of the same. FIG. 4 is a partially cutaway perspective view of the same.
DESCRIPTION OF SYMBOLS 1 Machine stand 2 Bracket 3 Rice polishing motor 5 Casing 6 Rice hopper 7 Discharge port 8 Rice milling chamber 9 Inlet 10 Outlet 11 Return passage 12 Return port 13 Extraction port 14 Shutter 15 Rice receiving container 16 Bran collecting part 18 Hinge shaft 19 Handle 21 Polishing Screen 22, 22 'Brim 23 Communication path 24 Cyclone 25 Bracket 26 Cylindrical part 27 Tapered part 28 Bulkhead 29 Air outlet 30 Inlet 31 Braid receptacle 32 Notch 33 Filter chamber 34 Filter 35 Joint part 36 Suction hose 37 Suction fan 38 Bracket 39 Pulley 41 Belt 42 Whiteness sensor

Claims (4)

A rice hopper discharge port is connected to the rice mill, and a circulation passage is formed from the exit of the rice mill to the rice hopper through the return passage, and the rice grains introduced into the rice hopper are circulated in the circulation passage. The rice grains after the completion of the rice milling are received in the rice receiving container by opening the shutter provided at the outlet below the above outlet, and the rice bran generated in the rice milling room is passed through the rice milling screen and discharged to the rice bran collecting part. In a circulating household rice mill that receives the bran in the bran receiving container attached to the rice receiving container, a cyclone is installed on the bran receiving container and the bran discharged into the bran collecting part. Is introduced into the cyclone, and the bran separated from the air in the cyclone is received by the bran receiving container. A taper part having a bran inlet in the peripheral wall of the cylindrical part of the cyclone, an air outlet in the center of the upper wall of the cylindrical part, a suction fan connected to the air outlet, and a bran outlet in the lower part of the cylindrical part And the tapered portion is inserted into the bran receiving container. 3. The domestic rice milling machine according to claim 2, wherein a bran removal filter is interposed between the air outlet of the cyclone and the suction fan. 4. The domestic rice milling machine according to claim 2, wherein a notch for preventing interference with the tapered portion of the cyclone is provided in a rear end wall of the bran receiving container.

Images