JP2790068B2 - Rice-free rice processing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates does not require rice washing and soaking prior to cooking, relates to a so-called no-bran rice, more particularly pressurized KoSo location of the non-bran rice.

[0002]

2. Description of the Related Art In order to process unwashed rice, rice grain (milled rice) must be agitated in water to remove the aleurone layer (bran) remaining on the rice grain surface. (See Japanese Patent Publication No. 1-16134).

[0003]

By the way, it is known that cracking occurs when rice grains having a water content of less than 15% are immersed in water. % In some cases, the water content may exceed 0.1%, and there are problems in storage stability and distribution problems due to variations in the water content. In view of these points, an object of the present invention is to provide a processing apparatus for non-washed rice treated to a moisture content of about 15%.

[0004]

Apparatus of the present invention for achieving the above object, according to an aspect of the rice grains temperature discharged from rice mill rises
Receiving device for receiving the polished rice in a washed state, a washing device for immediately cleaning the polished rice, and immediately draining the washed polished rice.
Washing and draining means provided with a draining device, and a moisture conditioning device for conditioning the moisture content of the polished rice after draining to 14 to 16%.
A drying device or a humidifying device is provided. Further, a means for measuring and bagging the milled rice is provided in a subsequent step of the drying means or the humidifying means.

[0005]

[Action and effect] The polished rice immediately after polished rice, that is, polished rice whose surface temperature rises due to polished rice and water in the rice grains is radiating to the outside is received by the receiving unit,
It is led to the cleaning device. The washing device immediately rinses the polished rice with relatively low temperature water of 15 ° C. or less to remove the aleurone layer remaining on the surface. As described above, when the water in the rice grains is in a divergent state, the water does not quickly penetrate to the inner layer of the rice grains by washing for a short time , and thus the washing can be performed without cracks in the water. Then washed
The polished rice is drained by a drainer, and then humidified.
Tempered to a fractional content of 14-16%.

As a result, there are no cracks and
Washed polished rice having an optimum water content, that is, unwashed rice can be obtained. The water content of the polished rice after draining
Rate is added <br/> Therefore moisture humidifying device of lower if humidity means than 14-16%, is dried by feeding <br/> wind etc. higher if drying apparatus than that. And unwashed rice as a product
Are packaged and put on the market by the weighing and bagging means provided in the subsequent step of the drying means or the humidifying means. At the time of cooking rice, the rice can be cooked immediately without washing and immersing the rice simply by putting the non-washed rice into a rice cooker together with water.

[0007]

Next, a preferred embodiment of the present invention will be described with reference to the drawings. The drawing is a front view showing the entire processing apparatus for washing rice without washing, which will be described below along the flow of rice grains. The rice milling means 100 includes a so-called grinding type rice mill 101 and a friction type rice mill 102 which are linked together.
A grinding trochanter 104 is installed in a perforated wall removing rice bran polishing cylinder 103,
A bran collecting hopper 105 is provided below the whitening cylinder 103, and a bran removing fan 106 is connected to the bran collecting hopper 105. The friction type rice mill 102 includes a friction milling trochanter 108 in a perforated wall milling cylinder 107 and the grinding type rice milling machine 10.
1, the bran collecting hopper 109 and the bran removing fan 110
, And both rice mills 101 and 102 are communicated by a bucket elevator 111.

The washing / draining means 200 is a washing device 200
A and a drainer 200B. , Cleaning means 200A
A screw conveyor 204 for stirring and upwardly feeding rice grains is provided in an upright cylinder 203 provided with a rice grain supply port 201 at a lower end portion and a rice grain discharge port 202 at an upper end portion. The screw conveyor 204 is driven by a motor 205, and its blades are provided with a large number of stirring bars 206. A supply gutter 207 is connected to the rice grain supply port 201 as a receiving unit , a discharge gutter 208 is connected to the rice grain discharge port 202, and a rotary valve 209 and a grain temperature are connected to the rice grain supply port 201. Attach the sensor T. Further, a washing water supply port 210 is provided at the lower end of the cylinder 203, and a washing water discharge port 211 is provided slightly below the rice grain discharge port 202, and the washing water supply port 210 and the washing water discharge port 21 are provided.
A net is set up on 1 to the extent that rice grains do not leak. A cleaning water circulation path 212 is formed between the cleaning water discharge port 211 and the cleaning water supply port 210, and the cleaning water circulation path 21
A pump 213 for circulation, a filter 214 and a cooler are appropriately interposed in the pump 2, a water supply pipe 216 connected to a water tank (not shown) is connected to the pump 213, and a drainage A pipe 217 is provided in a branched manner.

The draining device 200B includes a cleaning device 200A.
Supply gutter 219 and discharge gutter 220 connected to the discharge gutter 208
In the casing 218 provided with
1 is laid horizontally on the discharge gutter 220 side slightly lower, and is formed to be rotatable by a motor 222. The end of the blower tube 224 of the blower 223 faces the inside of the casing 218. A drain port 225 is provided at the bottom of the casing 218.
Is provided.

A conditioning unit 300 is provided via a bucket elevator 301 connected to the discharge gutter 220. Here, the refining includes humidification and drying, that is, adjusting the polished rice to an appropriate moisture content. That is, cylindrical heat treatment tubes 303 and 304 are erected close to each other in the machine wall 302, and screw conveyors 305 and 306 each having a hollow shaft are provided in the heat treatment tubes 303 and 304, respectively.
Pivotally pivoted by Screw conveyor 3
A large number of ventilation holes 308 are opened in the hollow shafts 05 and 306, and a net is stretched into the ventilation holes 308 so that rice grains do not enter. The configuration including the humidity control cylinders 303 and 304 performs drying.
If humidifying, use a humidifier.
You .

A supply port 309 is provided at a lower portion of one of the heat treatment tubes 303, and the supply port 309 is connected to the supply hopper 3 via a rotary valve 310 as an air cutoff valve.
The supply hopper 311 is connected to the bucket elevator 301. A moisture sensor S for measuring the moisture content of rice grains is provided in the supply hopper 311. An outlet 312 provided near the upper end of the tempering cylinder 303
And a supply port 313 provided at the lower part of the heat treatment tube 304 through a communication path 314. A discharge port 315 is provided near the upper end of the heat treatment tube 304, and a discharge gutter 316 is connected to the discharge port 315. Then, a rotary valve 317 is attached to the discharge gutter 316. A communication pipe 327 communicating the upper wall of each of the heat treatment tubes 303 and 304 is provided.
An opening and a shutter (not shown) for discharging residual grain rice are provided on the bottom wall of 304, and a discharge hopper 318 and a rotary valve 319 are provided.

Further, a high-pressure blower 320 is disposed below the heat treatment tubes 303 and 304, and a discharge pipe 3 of the high-pressure blower 320 is provided.
Numeral 21 is connected via a heater 322 to a discharge portion of a rotary valve 319 for discharging residual rice, rises upward, and communicates with a discharge port 315 via a discharge gutter 316. The lower ends of the hollow shafts of the screw conveyors 305 and 306 are connected to a suction port of the high-pressure blower 320 by a suction pipe 323. In addition, the tempering cylinder 303 near the supply port 309
A water supply pipe 324 provided with a nozzle is exposed. Water pipe 3
24 is connected to a pump 325 and a water tank 326.

In the subsequent step of the refining means 300, a weighing / bagging means 400 is provided. The weighing / bagging means 400 includes a bag-making section, a weighing / filling section, and a wrapping section (not shown) for forming the roll-shaped tube film 401 having gas barrier properties into a bag shape.

After the rice grains (brown rice) put into the grinding rice mill 101 are partially scraped off by the grinding action of the grinding trochanter 104, a part of the bran layer on the surface is scraped off. The rice bran layer on the surface of the rice grain is almost removed by grain friction and the like under a relatively high pressure.
The rice bran flour generated in this rice milling process is
2 collecting bran hoppers 105 and 109 and bran removal fan 10
6, 110 to a cyclone collector (not shown).

The rice grain (milled rice) thus milled has a considerably higher temperature than that of the raw material (brown rice).
Although the water content is also reduced, the water in the rice grains is still diverging to the outside. The rice grains in this state are transferred to the receiving device
As soon as it can be received in the water supply gutter 207), it is put into the cleaning device 200A, for example, within 30 minutes.

That is, the temperature of the rice grains passing through the supply gutter 207 is detected by the grain temperature sensor T, and is sequentially sent into the cylinder 203 by the rotary valve 209. The inside of the cylinder 203 is filled with washing water, and the rice grains are washed while being transported upward while being stirred by the screw conveyer 204 and the stirring bar 206, and the glue layer remaining on the surface of the rice grains is washed away. Then, for example, when the detection value X of the grain temperature sensor T is 35 ° C., the temperature of the washing water is determined to be 10 ° C. or less from the formula of Y = (X−15) / 2, and supplied from the water supply pipe 216. When the temperature of the water is higher than 10 ° C., the water is cooled to 10 ° C. by the cooler 215 and circulated. At this time, a part of the sewage is discharged from the discharge pipe 217, replenished by the water supply pipe 216, and filtered by the filter 214.

The time required for the rice grains to pass through the cylinder 203 is preferably a short time during which the washing water does not penetrate into the rice grains.
Within minutes. Within this time, the water in the rice grains is still in a divergent state, and there is no possibility that the washing water will permeate rapidly, and so-called underwater cracks do not occur. In addition, since water is washed at a considerably lower temperature than the grain temperature, it is difficult for water to penetrate.

The thus washed rice grains are immediately conveyed to the draining device 200B, and roll in the rotating perforated wall draining cylinder 221 while being exposed to the wind from the blower 223.
Removes moisture adhering to the surface. The removed water leaks from the perforated wall drainer 221, falls from the drain port 225 to a container or the like outside the machine, and the rice grains are thrown into the supply hopper 311 of the conditioning unit 300 by the bucket elevator 226.

The moisture sensor S in the supply hopper 311
The rice grain whose water content is measured by the rotary valve 310 is rotated from the supply port 326 by the rotation of the rotary valve 310.
, Is fed upward by the screw conveyor 305, flows into the supply port 313 of the other heat treatment tube 304 via the discharge port 312 and the connecting gutter 314, and is fed again by the screw conveyor 306. And each tempering cylinder 30
In 3,304, rice grains are refined.

That is, the target moisture content of the product is 15%
When the detection value of the moisture sensor S is higher than this, the high-pressure air warmed by the heater 322 is discharged to the discharge pipe 321.
To the discharge gutter 316 through the discharge port 315.
From the air conditioning tube 304. The hot air in the heat treatment tube 304 passes through the communication pipe 327 and the communication passage 314, and the other heat treatment tube 3
03 and screw conveyors 305, 306
The rice grains come into contact with the stirred and fluidized rice grains to remove moisture from the rice grains. The temperature of the hot air may be formed by controlling and adjusting the temperature of the heater 322 in accordance with the detection value of the moisture sensor S.

On the other hand, when the detection value of the moisture sensor S is lower than 15%, in addition to the supply of the hot air heated by the heater 322 (the temperature may be constant), water is added from the water supply pipe 324. The water easily penetrates into the grain of rice, which is warmed by hot air and the cell interval is wide. The amount of water added may be determined according to the detection value of the moisture sensor S. The hot air that has come into contact with the rice grains is exhausted from the ventilation holes 308 and is discharged from the high-pressure blower 32.
Reflux to 0.

It should be noted that humidification can be performed more quickly by providing a flow control valve in the suction pipe 323 and pressurizing the inside of each of the heat treatment tubes 303 and 304. After the refining, each refining cylinder 303, 3
When the shutter on the bottom wall of the 04 is opened and the rotary valve 319 is driven, the remaining rice is conveyed to the discharge pipe 321 and reaches the discharge gutter 316. In addition, by producing an aqueous solution of glucono delta lactone in the water tank 326 and adding it to rice grains at about 30 ppm, α-formation during rice cooking is promoted, and the taste is improved.

The rice grains adjusted to the optimum moisture content of 14 to 16% as a product are sequentially supplied to the weighing and bagging means 400, and are weighed and filled in a bag formed of a film having gas barrier properties. It is effective to remove the oxygen in the bag with a gas suction pipe and to inject nitrogen gas or the like through an inert gas injection pipe to hermetically seal and package.

According to the present invention, it is possible to obtain unwashed rice having no cracks and an optimal water content of 14 to 16% for market distribution. Unwashed rice does not require rice washing or time-consuming immersion as in the past when cooking rice.

[Brief description of the drawings]

FIG. 1 is a front view showing the whole.

FIG. 2 is a front view of the rice polishing means.

FIG. 3 is a front view of the washing / draining means.

FIG. 4 is a front view of the conditioning means and the weighing / bagging means.

[Explanation of symbols]

DESCRIPTION OF REFERENCE NUMERALS 100 Rice milling means 101 Grinding rice mill 102 Friction rice milling machine 103 Perforated wall removing rice bran polishing cylinder 104 Grinding trowel 105 Harvesting hopper 106 Removing rice bran fan 107 Perforated wall polishing cylinder 108 Friction polishing trochanter 109 Purifying rice hopper 110 Removing rice bran fan 111 Bucket elevator 200 Cleaning / draining means 200A Cleaning device 200B Draining device 201 Rice grain supply port 202 Rice grain discharge port 203 Cylindrical 204 Screw conveyor 205 Motor 206 Stir bar 207 Supply gutter ( receiving unit) 208 Drain gutter 209 Rotary valve 210 Cleaning water supply Mouth 211 Wash water outlet 212 Wash water circulation path 213 Pump 214 Filter 215 Cooler 216 Water supply pipe 217 Drain pipe 218 Casing 219 Supply gutter 220 Drain gutter 221 Perforated wall drain pipe 222 Motor 223 224 blower tube 225 drain port 300 temper unit 301 bucket elevator 302 aircraft walls 303,304 refining cylinder (drying device, humidifier) 305, 306 screw conveyer 307 motor 308 air vents 309 supply port 310 the rotary valve 311 feed hopper 312 Discharge port 313 Supply port 314 Communication path 315 Discharge port 316 Discharge gutter 317 Rotary valve 318 Discharge hopper 319 Rotary valve 320 High-pressure blower 321 Discharge pipe 322 Heater 323 Suction pipe 324 Water supply pipe 325 Pump 326 Water tank 327 Communication pipe Temperature sensor T Temperature sensor 400 Metering / bagging means 401 Rolled tube film

Claims (2)

(57) [Claims] Claims: 1. A rice mill and a milled rice discharged from a rice mill of the milling means are in a state in which the rice grain temperature is increased by the milling action.
Receiving device to receive when and cleaning to wash it immediately
A washing / draining means provided with an apparatus and a draining apparatus for immediately draining after washing, and a drying apparatus or a humidifying means for adjusting the moisture content of the polished rice after draining to 14 to 16%. processing equipment non-bran rice formed by providing a device. 2. The processing apparatus for unwashed rice according to claim 1, further comprising means for measuring and bagging the polished rice after the humidity control means .