CN1227067A - Technology for producing instant rice and its producing device - Google Patents
Technology for producing instant rice and its producing device Download PDFInfo
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- CN1227067A CN1227067A CN99100426A CN99100426A CN1227067A CN 1227067 A CN1227067 A CN 1227067A CN 99100426 A CN99100426 A CN 99100426A CN 99100426 A CN99100426 A CN 99100426A CN 1227067 A CN1227067 A CN 1227067A
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Abstract
Material rice after soaking is steamed in continuous steamer while water is sprayed on to rice layer and steamed rice is dispersed by fine water stream, then dried by side blown layered air flow, and finally packaged into instant rice product. When re-mixed with water, the instant rice can maintain integrity and is like newly cooked rice. The present invention also provides the device for producing the instant rice for industriolization.
Description
The present invention relates to food processing field, the particularly production of instant food relates in particular to a kind of production technology and process units thereof of instant-rice.
Instant-rice as its name suggests, is exactly that the prior processed system of rice material is ripe, and drying dehydration and be convenient to preserve, when edible with an amount of hot-water soak, dry rice rehydration and become rice.Its most outstanding characteristics are exactly convenient, clean soon.Instant-rice in the market mainly is to adopt puffing technique and the rice material boiling is formed through dehydrating after ripe again, the product endoplasm is loose, the toughness mouthfeel that does not have the rice that daily boiling goes out after the rehydration, the salted cake fried in sesame oil flavor that does not also have daily rice, people eat instant-rice also only for fast, are a kind of selections that is not able to, and that is to say, people also are difficult to from the quality approval the instant-rice goods on the market, and its reason is the very unreasonable of production technology design.
The objective of the invention is to study the production technology that a kind of instant-rice is provided, prior art processes is improved, produce high-quality instant-rice product.
The present invention also aims to provide a kind of process units of rice convenient for production, realize the suitability for industrialized production of instant-rice.
Instant-rice production technology provided by the invention comprises rice material is made dehydrated cooked rice through boiling, dry run, and it is characterized in that, this production technology is finished by following steps:
(1) soak rice material with demineralized water, this softening hardness of water (in CaO)≤100 mg/litre, soak time is decided because of water temperature, during 40～60 ℃ of water temperatures, soak time 30～50 minutes, room temperature water is 1.5～2.5 hours in the soak time in winter;
(2) soaked rice material drains away the water to be placed on and sends into steam box on the guipure and steam, the thickness of rice layer is 1～35mm on the guipure, the interior temperature of steam box remains on 60～100 ℃ when steaming rice, steaming time is 25～50 minutes, and in whole process, spray water to the rice layer equably, make the rice water content that steams 75～85%;
(3) steam good rice with thin water impact and make it separated and scatter, water flow pressure is 1.5～2.5Mpa;
(4) even being layered on of the rice after separating sent into drying device and carried out heated-air drying on the net dish, the rice layer average thickness that rice is laid on the net dish is 1～15mm, dry run divides three warm areas to finish, wind pushing temperature is 110～125 ℃, 80～100 ℃ and 60～80 ℃ in regular turn, and adopt side-blown layer flow mode drying, allow hot blast blow over crosswind wind speed 1～3.5 meter per second from the side level of carrying the rice net dish direction of motion, 1.5～2.5 hours whole heated-air drying time, make that water content is 3.5～9% in the dry good rice;
(5) dry good rice is after the flexibility pulverizing and the sorting of sieving, and quantitative filling also adds flavour enhancer for rice and adsorbent simultaneously.
The rice material that the present invention uses need be selected, eluriate clean earlier, if select the rinsing-free polished rice for use, then can make the quality of final products better.From the suitability for industrialized production angle, the present invention is not particularly limited the kind and the specification of rice material, and selecting with elutriation apparatus and operation of rice all belongs to ordinary skill, so will not describe in detail.
In the immersion process of rice material, can in the demineralized water that uses, add an amount of edible organic monoacid, addition is: 100 kilograms of rice materials of every immersion add 50～200 grams, and its effect one is to improve to soak effect, shortens the time of soaking, the 2nd, play neutralization, keep the neutrality of soak.Described edible organic monoacid preferably uses citric acid, malic acid, butanedioic acid etc.The demineralized water that soaks usefulness can have multiple processing mode to obtain, as ion-exchange, ultrafiltration, distillation and other demineralized water processing mode.
One of difference of technology of the present invention and prior art is to be placed in after rice material drains the water in the digestion process sends into steam box on the guipure, spray water equably to the rice layer when steaming, make rice in steaming process, progressively absorb moisture, the rice suction that steams like this is abundant, and water content reaches 75～85%, and rice is cooked but is mashed, the mouthfeel of tasting has the muscle degree, once do not add whole institutes water requirement and do not resemble prior art in rice, rice is under water all the time to cooking, and is easy to be steamed mashed like this.The present invention when steaming rice material more preferably mode be, rice is placed on the continuous foraminous conveyer and enters steam box with guipure, the steaming temperature in the steam box is by upwards spraying vapours control and keeping evenly distributing from the guipure bottom.
Steam good ripe rice and normally be bonded to piece; before dry, need be separated earlier and be broken up; the present invention adopts the mode of thin water impact to realize; water flow pressure should reach 1.5～2.5Mpa; in separatory water, can add an amount of surfactant; as sucrose fatty acid ester; to accelerate separating rate; improve separating effect; and can form layer protecting film on the surface of rice; general use amount is that per 100 kilograms of rice materials use 20～50 grams, and this separation water can be realized recycling by pump in the production.
In the actual production, can Mi Jun after the separation be layered in the net dish on the conveyer belt by continuous conveyor, send into drying device then, usually use drying alley, when carrying out heated-air drying, can put carrying a meter net dish multilayer stack, send steaming good rice into drying alley, carry rice net dish when stack is put to same direction 10～15 degree that tilt, be beneficial in the dry run circulation of air moisture taken away, the stack of net dish highly is 1.2～1.8 meters.In drying alley, the control dry run is divided into three warm areas to be finished, and because of the rice high humidity, wind pushing temperature is 110～125 ℃ in first warm area, rice surface drying when entering second warm area, keep 80～100 ℃ of wind pushing temperatures, enter the 3rd warm area, rice has been sloughed most of water, substantially dry, stick with paste for preventing that the surface is burnt, should control 60～80 ℃ of wind pushing temperatures, make rice further be dried to water content and reach 3.5～9%.
The drying mode main feature of process using of the present invention is to have adopted side-blown laminar flow dried forms, make hot blast blow over from the side level of carrying the rice net dish direction of motion, because of the certain inclination angle of being placed with of net dish, certain intersecting angle when being contacted with material, hot blast is arranged, hot blast contacts with material that to carry out heat exchange more abundant, has improved drying effect; In addition, during heated-air drying, preferred operation is the arrival end that air exhausting device is located at drying alley, and moist hot blast and material are gone against the stream, and hot blast temperature is consistent with moist gradient change direction in the tunnel, and the drying that can help meter has also made full use of the energy.
By the above as can be seen, production technology of the present invention is more scientific and reasonable than prior art, and this technological requirement uses current production devices to improve a little and can realize.
The production technology of above-mentioned instant-rice disclosed in this invention, more can realize: mainly include and soak part, boiling part, separator, drying device, fragmentation and filling apparatus by a kind of supporting instant-rice process units, wherein, boiling is continuous steam box partly, is provided with the steam nozzle that number row spray water tap and number row can upwards be sprayed vapour from the guipure bottom in the steam box; Separator is built in continuous steam box end, and being one has the shower of cecum, and pipe is provided with linear distributing spray-hole, aperture 2～3mm, and pitch-row 3～5mm, this shower inserts circulating water chennel; Drying device is side-blown laminar flow drying alley, wherein the hothouse both sides are respectively air intake passage and return air channel, be provided with heater between air intake passage and the hothouse, terminal air intake passage one side in tunnel is provided with new ventilating regulator, top, tunnel return air channel one side then is provided with air exhausting device, and the tunnel top setting can be to the axial flow blower of air intake passage air feed and the steam valve of control wind pushing temperature.
In plant designing and equipment are installed, can feed pipe be set and steam pipe leads to corresponding device thereof according to technological requirement, and corresponding auxiliary body is set, as lift, conveyer etc., can realize that the industrialization of instant-rice is produced continuously.
The operation principle of process units provided by the invention can describe in detail in conjunction with the accompanying drawings.
The explanation of accompanying drawing drawing
Fig. 1 is an instant-rice production-line technique schematic flow sheet of the present invention.
Fig. 2 is a separator work schematic diagram of the present invention.
Fig. 3 is the side schematic view of separator spray header of the present invention.
Fig. 4 is the present invention's laminar flow drying device schematic diagram that blows side.
Fig. 5 is the present invention's laminar flow drier schematic diagram that blows side.
As shown in Figure 1, instant-rice process units provided by the invention mainly includes and soaks part, boiling part, separator, rice drying device, fragmentation and filling apparatus according to the production process branch, now describes in detail in conjunction with the production operation process.During production, rice material is raised machine 1 and sends into soaking compartment 2 and soak, and by elevated tank 3 supply soaking compartments 2 hot water, after immersion is finished, rice material is introduced into hopper 4, by deadweight and water lubrication effect, drop on the foraminous conveyer 51 of steam box 5, regulate the valve of hopper 4 simultaneously, can make rice by certain rice layer thickness, certain width drops on the guipure 51, be brought into steam box 5 under the effect of guipure drive part, according to the design of technological requirement, rice material is controlled to be 25～50 minutes by the time of steam box 5, being provided with the spray water tap in this continuous steam box 5 can evenly spray water to the rice layer, and the steam nozzle of guipure bottom below guipure continuously to rice layer spraying steam, the Mi Suoxu moisture and keep temperature in the steam box of supplying raw materials, rice material is ripe rice when coming out from steam box 5; End at steam box 5 sets up separator 6, be one the shower of cecum to be arranged, pipe is provided with linear distributing spray-hole 61, the thin current that certain pressure is arranged by the shower ejection when ripe rice is brought to guipure 51 other ends, rice broken up with guipure separate, and evenly drop in the abortive haul dish on the following empty tray conveyor 7, by adjusting the speed of conveyer, can make in each net dish the rice layer thickness evenly and meet the requirements.The net dish that ripe rice is housed can push drying alley 8 with dolly by manually stacking, and dry good rice is sent into bottle placer 11 cans through elevator 10 again through disintegrating machine 9 fragmentations, finishes last packing by sealing machine 12 then.
As Fig. 2,3 are depicted as separator schematic diagram of the present invention, shower 6 is arranged at the end of steam box 5, this shower 6 is for there being the water pipe of cecum, linear distributing spray-hole 61 is arranged on the pipe, water is ejected into steam box 5 terminal guipure upsets place by spray-hole 61, because pitch-row and aperture are all very little, and hydraulic pressure reaches 1.5～2.5Mpa, when steaming good rice and being transferred guipure and delivering to this upset place, under thin water impact, separate down to carrying in the rice net dish with guipure, also disperseed simultaneously, used water can be realized recycling by tank and pump, and the screen pack (not shown) is set in tank, makes unlikely get back in the shower 6 of the rice that spills when separating and stops up spout, in addition, also can be provided with new water supplementary device and blowdown apparatus in the circulating water chennel.Water that uses in the whole process and steam obtain by feed pipe S and the steam pipe Q that is provided with.
The present invention is that drying device uses side-blown laminar flow drying alley than another improvements of prior art, as Fig. 4, shown in Figure 5, rice to be dried places and is admitted to hothouse 80 on the net dish, hothouse 80 both sides are respectively air intake passage 83 and return air channel 84, between air intake passage 83 and the hothouse 80 heater 82 is set, tunnel 8 terminal air intake passage 83 1 sides are provided with new ventilating regulator 85, top, tunnel return air channel 84 1 sides then are provided with air exhausting device 86, the tunnel top setting can be to the axial flow blower 87 of air intake passage 83 air feeds and the steam valve of control wind pushing temperature, and the outside in tunnel is a heat-insulation layer 81.Dry rice W enters the tunnel in regular turn by I, II, III warm area, the wind pushing temperature of each warm area can be by the steam valve control that is provided with, the direction of motion of hot blast is to enter hothouse 80 after being heated by air intake passage 83 heater vias, fully contact with material and to carry out heat exchange, and in the tunnel, repeatedly recycled, make the variation tendency unanimity of hot blast temperature, moist gradient, discharge through return air channel 84 then, moisture is taken away, be 10～15 degree inclination alpha with horizontal wind direction on request and stack and carry rice net dish, more help heat exchange fully.
Crumbling method of the present invention can adopt the rubber roll squash type, can carry out can through the screening choosing again, and its equipment is mature technology, will not describe in detail.
Instant-rice production technology provided by the invention is compared with domestic and international similar technology with device, characteristics are: do not add water when 1, rice material enters steam box, but the mode with spraying keeps the skin wet in the process of steaming, and makes rice material absorb moisture gradually and is cooked, and mouthfeel is good; 2, break up separation by spray equipment after the rice that cooks comes out from steam box, do not use in bulk the putting of rake that the rice rake is loose, help keeping the complete of the grain of rice; Rice layer thickness when 3, rice material enters steam box requires evenly and is certain, helps stable operation; Adopt when 4, dry and push the multilayer rice dish laminar flow formula drying that blows side simultaneously in hothouse, the rice layer is laid on directly that to carry out individual layer series flow drying on the guipure more reasonable, helps making full use of heat energy and improves production output.5, the grain of rice is complete after the dry rice rehydration, and the mouthfeel chewiness can match in excellence or beauty with daily family cooking rice, and by in packing, adding the requirement that adsorbent satisfies the preservation of following long period of normal temperature.
Involved in the present invention only is the production technology of instant-rice, in the final packing of product, can cooperate the good fast food dish of processing and packing as required, the consumer is when edible like this, only need add water makes the dry rice rehydration, and the heating of will garnishing food again can enjoy the good to eat Chinese fast food of an end.
Claims (8)
1, a kind of production technology of instant-rice comprises rice material is made dehydrated cooked rice through boiling, dry run, and it is characterized in that, this production technology is finished by following steps:
(1) soak rice material with demineralized water, this softening hardness of water (in CaO)≤100 mg/litre, soak time is decided because of water temperature, during 40～60 ℃ of water temperatures, soak time 30～50 minutes, room temperature water is 1.5～2.5 hours in the soak time in winter;
(2) soaked rice material drains away the water to be placed on and sends into steam box on the guipure and steam, the thickness of rice layer is 1～35mm on the guipure, the interior temperature of steam box remains on 60～100 ℃ when steaming rice, steaming time is 25～50 minutes, and in whole process, spray water to the rice layer equably, make the rice water content that steams 75～85%;
(3) steam good rice with thin water impact and make it separated and scatter, water flow pressure is 1.5～2.5Mpa;
(4) even being layered on of the rice after separating sent into drying device and carried out heated-air drying on the net dish, the rice layer average thickness that rice is laid on the net dish is 1～15mm, dry run divides three warm areas to finish, wind pushing temperature is 110～125 ℃, 80～100 ℃ and 60～80 ℃ in regular turn, and adopt side-blown layer flow mode drying, allow hot blast blow over crosswind wind speed 1～3.5 meter per second from the side level of carrying the rice net dish direction of motion, 1.5～2.5 hours whole heated-air drying time, make that water content is 3.5～9% in the dry good rice;
(5) dry good rice is after the flexibility pulverizing and the sorting of sieving, and quantitative filling also adds flavour enhancer for rice and adsorbent simultaneously.
2, the production technology of a kind of instant-rice according to claim 1 is characterized in that, adds an amount of edible organic monoacid when soaking rice material, and addition is: 100 kilograms of rice materials of every immersion add 50～200 grams.
3, the production technology of a kind of instant-rice according to claim 2 is characterized in that, described edible organic monoacid preferably uses citric acid, malic acid or butanedioic acid.
4, the production technology of a kind of instant-rice according to claim 1, it is characterized in that, more preferably mode is when steaming rice material, rice is placed on the continuous foraminous conveyer and enters steam box with guipure, and the steaming temperature in the steam box is by upwards spraying vapours control and keeping evenly distributing from the guipure bottom.
5, the production technology of a kind of instant-rice according to claim 1 is characterized in that, can add the suitable amount of sucrose fatty acid ester in carrying out the separatory water of rice, and use amount is per 100 kilograms of rice materials, 20～50 grams, and this separation water recycles.
6, the production technology of a kind of instant-rice according to claim 1, it is characterized in that, when carrying out heated-air drying, can put carrying a meter net dish multilayer stack, to same direction inclination 10～15 degree, the stack of net dish highly is 1.2～1.8 meters to the net dish when stack is put.
7, the production technology of a kind of instant-rice according to claim 1 is characterized in that, during heated-air drying, preferred operation is the arrival end that air exhausting device is located at drying device.
8, a kind of instant-rice process units, it is characterized in that mainly including immersion part, boiling part, separator, drying device, fragmentation and filling apparatus, wherein, boiling is continuous steam box partly, is provided with the steam nozzle that number row spray water tap and number row can upwards be sprayed vapour from the guipure bottom in the steam box; Separator is built in continuous steam box end, and being one has the shower of cecum, and pipe is provided with linear distributing spray-hole, aperture 2～3mm, and pitch-row 3～5mm, this shower inserts circulating water chennel; Drying device is side-blown laminar flow drying alley, wherein the hothouse both sides are respectively air intake passage and return air channel, be provided with heater between air intake passage and the hothouse, terminal air intake passage one side in tunnel is provided with new ventilating regulator, top, tunnel return air channel one side then is provided with air exhausting device, and the tunnel top setting can be to the axial flow blower of air intake passage air feed and the steam valve of control wind pushing temperature.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99100426A CN1072454C (en) | 1999-02-11 | 1999-02-11 | Technology for producing instant rice and its producing device |
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| CN99100426A CN1072454C (en) | 1999-02-11 | 1999-02-11 | Technology for producing instant rice and its producing device |
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| CN1227067A true CN1227067A (en) | 1999-09-01 |
| CN1072454C CN1072454C (en) | 2001-10-10 |
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| CN99100426A Expired - Fee Related CN1072454C (en) | 1999-02-11 | 1999-02-11 | Technology for producing instant rice and its producing device |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101326974B (en) * | 2008-08-05 | 2012-03-21 | 南京市扬子粮油食品机械有限公司 | Fresh-keeping wet noodle steaming and cooking technique and processing equipment thereof |
| CN101731520B (en) * | 2009-12-25 | 2012-05-23 | 合肥工业大学 | Preparation process of convenient rice |
| CN101822335B (en) * | 2009-03-05 | 2012-07-11 | 长沙施科威机器制造有限公司 | Steam boiling and drying integrated equipment for producing preboiled rice |
| CN102550925A (en) * | 2010-12-20 | 2012-07-11 | 李志红 | Preparation method of yellow rice |
| CN104686939A (en) * | 2015-03-17 | 2015-06-10 | 贵州薏米阳光产业开发有限责任公司 | Full-nutritional instant pearl barley and preparation method thereof |
| CN105309869A (en) * | 2014-07-25 | 2016-02-10 | 铁三角有限公司 | Rice stirring device |
| CN105338830A (en) * | 2013-06-06 | 2016-02-17 | 日清食品控股株式会社 | Cooked rice de-clumping method and de-clumping device |
| CN105380506A (en) * | 2010-07-02 | 2016-03-09 | 廉光锡 | Apparatus and method of manufacturing completely cooked rice which is completely cooked in sterilized condition |
| CN109907204A (en) * | 2019-03-14 | 2019-06-21 | 中恩（天津）医药科技有限公司 | A kind of processing method of low albumen instant-rice |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069173A (en) * | 1991-08-03 | 1993-02-24 | 王润蛟 | The production technology of New-type instant rice |
| CN1128630A (en) * | 1995-02-12 | 1996-08-14 | 肖辉刚 | Instant cooked rice |
-
1999
- 1999-02-11 CN CN99100426A patent/CN1072454C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101326974B (en) * | 2008-08-05 | 2012-03-21 | 南京市扬子粮油食品机械有限公司 | Fresh-keeping wet noodle steaming and cooking technique and processing equipment thereof |
| CN101822335B (en) * | 2009-03-05 | 2012-07-11 | 长沙施科威机器制造有限公司 | Steam boiling and drying integrated equipment for producing preboiled rice |
| CN101731520B (en) * | 2009-12-25 | 2012-05-23 | 合肥工业大学 | Preparation process of convenient rice |
| CN105380506A (en) * | 2010-07-02 | 2016-03-09 | 廉光锡 | Apparatus and method of manufacturing completely cooked rice which is completely cooked in sterilized condition |
| CN102550925A (en) * | 2010-12-20 | 2012-07-11 | 李志红 | Preparation method of yellow rice |
| CN105338830A (en) * | 2013-06-06 | 2016-02-17 | 日清食品控股株式会社 | Cooked rice de-clumping method and de-clumping device |
| CN105309869A (en) * | 2014-07-25 | 2016-02-10 | 铁三角有限公司 | Rice stirring device |
| CN104686939A (en) * | 2015-03-17 | 2015-06-10 | 贵州薏米阳光产业开发有限责任公司 | Full-nutritional instant pearl barley and preparation method thereof |
| CN109907204A (en) * | 2019-03-14 | 2019-06-21 | 中恩（天津）医药科技有限公司 | A kind of processing method of low albumen instant-rice |
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| CN1072454C (en) | 2001-10-10 |
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