Rice processing technique
Technical field
The present invention relates to rice processing technique field, be specifically related to rice processing technique.
Background technology
Rice, is one of the most edible staple food of people.The rice processing of broad sense refers to that paddy husking arrives the comprehensive process course of processing of polished rice product.The work flow of rice includes remove impurity, husk rice, polishing, color choosing, classification and packaging substantially.
In actual production process, rice processing technique obtains broken rice rate in rice and accounts for 15~30%, due to following both sides reason, broken rice rate can be caused to increase: first be before paddy processing the various process of process, state when gathering in including Oryza glutinosa, threshing, ted, during charging crane transport etc., Oryza glutinosa is made it be crashed to pieces by mechanical impact;Second is rice processing mechanical apparatus processing performance and operation management water product etc..During sale, rice granulate is higher than the economic worth cracked rice, so for obtaining good economic benefit, rice processing enterprises is striven improving rice processing technique, made broken rice rate be preferably minimized.
Summary of the invention
The present invention is directed to the technical problem of above-mentioned existence, it is provided that a kind of broken rice rate rice processing technique less than 8%.
In order to solve above-mentioned technical problem, the present invention provides following technical scheme: rice processing technique, comprises the following steps:
Step one, remove impurity: the Oryza glutinosa gathered is put into impurity removing machine and goes the removal of impurity;
Step 2, dry: use air drying methods to be spread by Oryza glutinosa and be dried in drying shed, described hot blast temperature is 35~45 DEG C, intermittently drying mode is used to carry out, take out after being often dried 50~60min and stir, and be dried again after cooling down 10min, it is 12~14% to Rice Kernel Moisture Content, Oryza glutinosa is cooled to room temperature;
Step 3, a husk rice: the rice that will be cooled to room temperature puts into removing rice husk in rice mill, makes husking yield reach 60~80%, it is thus achieved that semi-finished product;
Step 4, moistening: use atomizing type to make surface of semi-finished enclose water smoke;Cage on the semi-finished product of atomization moistening is steamed, takes out after steaming 10~15min;
Step 5, it is dried: utilizing 20~30 DEG C of cold air drying step 4 gained semi-finished product, making semi-finished product moisture content is to cool down after 12~14%;
Step 6, secondary husk rice: dried semi-finished product put in rice mill and again roll, be cooled to room temperature after making to shell completely, or rice semi-finished product;
Step 7, polishing: the rice semi-finished product being cooled to room temperature are placed in polishing in buffing machine, it is thus achieved that rice;
The choosing of step 8, color, classification: rice is placed in apparatus of selecting rice color and carries out color choosing, be subsequently placed in sieving and grading in grader.
The present invention uses the mode of intermittently drying, utilize hot blast that Oryza glutinosa is dried, hot blast temperature is arranged on 25~45 DEG C, take out after being often dried 50~60min and stir, and be dried again after cooling down 10min, be 12~14% to Rice Kernel Moisture Content, moisture in the grain of rice wrapped up in can taking away rice husk and rice husk the most evenly, it is suitable that temperature controls, it is to avoid temperature is too high causes that grain of rice surface becomes fragile rapidly and internal moisture still retains too much, and grain of rice surface will not become fragile, and decreases the probability of the phenomenon that occurs cracking rice.Employing hot blast brushes, and stirred by step, Oryza glutinosa is made to be heated evenly, ensure that every Oryza glutinosa each position moisture loss convergence is consistent, under this state, being conducive to controlling the frequency used by husk rice time and husk rice, every Oryza glutinosa moisture is close, controlled by identical husk rice effect, this also reduces generation and crack rice link.
The situation of rice fragmentation is caused for reducing mechanism, after Oryza glutinosa goes wet process, husk rice makes husking yield reach 60~80%, this operation is for traditional handicraft once completes to shell completely, the mechanism that Oryza glutinosa is subject to weakens, and at this under more weak effect, still there is unhulled Oryza glutinosa, then rice husk and the rice of this part Oryza glutinosa adheres to closely, so being just difficult to shell, the joint operation being dried after have employed first moistening the most subsequently, moistening makes rice husk expand, then it is dried and then there is contraction, such one one contracting, contribute to the adhesive attraction reducing rice husk with rice, through secondary husk rice after, the most easily the unhulled Oryza glutinosa of husk rice is thoroughly shelled.
It is cooled to room temperature carry out husk rice again and remove rice husk, also avoids Oryza glutinosa to cross and be dried and stress is frangible.After completing due to husk rice, grain of rice temperature is higher, and traditional handicraft directly polishes, and the most easily causes the quick-fried waist of the grain of rice, occurs cracking rice in a large number, and therefore, this has been also carried out improving by the present invention, before polishing the grain of rice is cooled to room temperature, greatly reduces broken rice rate.
The each link of the present invention Oryza glutinosa will by mechanism before cool down;Compared with technique of drying Oryza glutinosa is dried with tradition dry in the sun and the most disposable high temperature, the effect taking away Oryza glutinosa internal moisture relaxes, and is heated evenly;In conjunction with moistening and drying process, through secondary husk rice, compared with traditional handicraft, adding the drying steps after moistening and moistening, greatly reduce broken rice rate, same a batch of Oryza glutinosa of the inventive method processing, broken rice rate has reached less than 8%.
Further, in step 2, Oryza glutinosa spreads thickness is 0.8~1.2cm.Under this thickness, both can guarantee that hot blast temperature was efficiently utilized, the efficiency of link of drying can have been improved again, and shortened and dry the time.
Detailed description of the invention
Below in conjunction with embodiment, technical solution of the present invention is further illustrated:
Embodiment 1: rice processing technique, comprises the following steps:
Step one, remove impurity: the Oryza glutinosa gathered is put into impurity removing machine and goes the removal of impurity, remove the impurity that the light weights such as Caulis et Folium Oryzae fragment are large stretch of, then Oryza glutinosa is spread in drying shed;
Step 2, dry: use the hot blast of 40 DEG C that the Oryza glutinosa spreading in drying shed is repeatedly dried, spreading thickness is 1.2cm, takes out and stirs, and be dried after cooling down 10min again after being often dried 60min, it is 12~14% to Rice Kernel Moisture Content, Oryza glutinosa is cooled to room temperature;
Step 3, a husk rice: the Oryza glutinosa that will be cooled to room temperature puts into removing rice husk in rice mill, makes husking yield between 60~80%, it is thus achieved that semi-finished product;
Step 4, moistening: be atomized semi-finished product, make surface of semi-finished adhere to water smoke;The semi-finished product of atomization moistening are put into and takes out after the steam of 300 DEG C heats 2~5S;
Step 5, it is dried: being dried through the dry wind of-5 DEG C by the semi-finished product in step 4, making semi-finished product moisture content is 12~14%;
Step 6, secondary husk rice: dried semi-finished product put in rice mill and again roll, and are cooled to room temperature after making to shell completely, it is thus achieved that rice just finished product;
Step 7, polishing: the rice semi-finished product being cooled to room temperature are placed in polishing in buffing machine, it is thus achieved that rice finished product;
The choosing of step 8, color, classification: rice is placed in apparatus of selecting rice color and carries out color choosing, be subsequently placed in sieving and grading in grader.
Embodiment 2: rice processing technique, comprises the following steps:
Step one, remove impurity: the Oryza glutinosa gathered is put into impurity removing machine and goes the removal of impurity, remove the impurity that the light weights such as Caulis et Folium Oryzae fragment are large stretch of, then Oryza glutinosa is spread in drying shed;
Step 2, dry: use the hot blast of 35 DEG C that the Oryza glutinosa spreading in drying shed is repeatedly dried, spreading thickness is 0.8cm, takes out and stirs, and be dried after cooling down 10min again after being often dried 50min, it is 12~14% to Rice Kernel Moisture Content, Oryza glutinosa is cooled to room temperature;
Step 3, a husk rice: the Oryza glutinosa that will be cooled to room temperature puts into removing rice husk in rice mill, makes husking yield between 60~80%, it is thus achieved that semi-finished product;
Step 4, moistening: be atomized semi-finished product, make surface of semi-finished adhere to water smoke;The semi-finished product of atomization moistening are put into and takes out after the steam of 300 DEG C heats 2~5S;
Step 5, be dried: being dried through the dry wind of 3 DEG C by the semi-finished product in step 4, making semi-finished product moisture content is 12~14%;
Step 6, secondary husk rice: dried semi-finished product put in rice mill and again roll, and are cooled to room temperature after making to shell completely, it is thus achieved that rice just finished product;
Step 7, polishing: the rice semi-finished product being cooled to room temperature are placed in polishing in buffing machine, it is thus achieved that rice finished product;
The choosing of step 8, color, classification: rice is placed in apparatus of selecting rice color and carries out color choosing, be subsequently placed in sieving and grading in grader.
Embodiment 3: rice processing technique, comprises the following steps:
Step one, remove impurity: the Oryza glutinosa gathered is put into impurity removing machine and goes the removal of impurity, remove the impurity that the light weights such as Caulis et Folium Oryzae fragment are large stretch of, then Oryza glutinosa is spread in drying shed;
Step 2, dry: use the hot blast of 40 DEG C that the Oryza glutinosa spreading in drying shed is repeatedly dried, spreading thickness is 1.0cm, takes out and stirs, and be dried after cooling down 10min again after being often dried 55min, it is 12~14% to Rice Kernel Moisture Content, Oryza glutinosa is cooled to room temperature;
Step 3, a husk rice: the Oryza glutinosa that will be cooled to room temperature puts into removing rice husk in rice mill, makes husking yield between 60~80%, it is thus achieved that semi-finished product;
Step 4, moistening: be atomized semi-finished product, make surface of semi-finished adhere to water smoke;The semi-finished product of atomization moistening are put into and takes out after the steam of 300 DEG C heats 2~5S;
Step 5, it is dried: being dried through the dry wind of-10 DEG C by the semi-finished product in step 4, making semi-finished product moisture content is 12~14%;
Step 6, secondary husk rice: dried semi-finished product put in rice mill and again roll, and are cooled to room temperature after making to shell completely, it is thus achieved that rice just finished product;
Step 7, polishing: the rice semi-finished product being cooled to room temperature are placed in polishing in buffing machine, it is thus achieved that rice finished product;
The choosing of step 8, color, classification: rice is placed in apparatus of selecting rice color and carries out color choosing, be subsequently placed in sieving and grading in grader.
For a person skilled in the art, on the premise of without departing from present configuration, it is also possible to make some deformation and improvement, these also should be considered as protection scope of the present invention, and these are all without affecting effect and the practical applicability that the present invention implements.