Method for producing wash-free rice and apparatus therefor
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Accused Products
Abstract
The present invention provides a method for producing wash-free rice which does not require washing before cooking. The method comprises the following steps: preparing polished rice from brown rice polished by a built-in rice polishing machine and sifted by a built-in sifting machine and/or polished rice from outside sources; preparing rice polishing bran (parched bran) used as an abrasive; preparing a mixture consisting of the polished rice and the abrasive in a desired ratio; stirring the mixture in a tank by revolving stirring blades such that the polished rice and the abrasive are mutually rubbed in order to strip sticking bran including skin bran and foreign debris from the surfaces of the rice grains; sifting the stirred mixture in order to separate bran from the rice; separating residual sticking bran and foreign debris from rice grains in order to obtain finished wash-free rice; and recovering the separated bran for recycling as the abrasive.
6 Citations
12 Claims
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1. (canceled)
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2. A method for producing wash-free rice which does not require washing before cooking, comprising steps of:
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preparing polished rice from brown rice polished by a built-in rice polishing machine and sifted by a built-in sifting machine and/or polished rice from outside sources;
preparing rice polishing bran (parched bran) used as an abrasive;
preparing a mixture consisting of said polished rice and said abrasive in a desired ratio;
stirring said mixture in a tank by revolving stirring blades such that said polished rice and said abrasive are mutually rubbed in order to strip sticking bran including skin bran and foreign debris from the surfaces of rice grains;
sifting said stirred mixture in order to separate bran from the rice grains;
separating residual sticking bran and foreign debris from the sifted rice grains in order to obtain finished wash-free rice; and
recovering the separated bran for recycling the bran as the abrasive, wherein;
in said stirring step, a revolving rate of said stirring blades is raised, if a surface level of said mixture in said tank is lower than a predetermined level either (1) at the end of the wash-free rice producing operation or (2) said mixture is not filled to capacity of said tank. - View Dependent Claims (3, 4, 5)
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6. (canceled)
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7. An apparatus for producing wash-free rice which does not require washing before cooking, comprising:
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a polished rice tank for accommodating polished rice from brown rice polished by a built-in raw rice polishing machine and sifted by a built-in sifting machine or polished rice from outside sources;
a stirring means for mixing a mixture consisting of the polished rice and an abrasive in a desired ratio by revolving stirring blades;
a transportation means for transporting said stirred mixture consisting of policed rice and bran;
a sifting means for sifting bran from the polished rice;
a separating means comprising cylindrical rotary brushing means for stripping residual foreign powders such as fine powders and the like from the surfaces of rice grains in order to obtain finished wash-free rice grains; and
a separated bran recovering means for recycling the bran as the abrasive, wherein;
said stirring means comprises;
a vertical revolving axis equipped in a vertical rotary housing;
a plurality of revolving blades arranged radially around said vertical revolving in a plurality of stages;
a shut-off valve arranged at the bottom of said vertical rotary housing; and
a control means for controlling a revolving rate of said revolving blades in accordance with a level of the mixture in said vertical rotary housing and for controlling a supply amount of the stirred mixture to the next step. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification