JPH0468985B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a rice grain moisture conditioning method for adding moisture to rice grains and conditioning the moisture content to an arbitrary moisture content in the range of 14 to 16% to improve the taste. Regarding the device.

[Conventional technology]

The taste of cooked rice also depends on the moisture content of the white rice before cooking. White rice with a moisture content of 14 to 16% will cook as perfect grains without cracking even if it is soaked in water during cooking, but white rice with a moisture content of 14% or less will crack when soaked in water during cooking. When the rice is cooked, the rice grains break and become sticky. For this purpose, over-dried rice that lacks moisture (moisture content) is subjected to humidity conditioning treatment. There are two types of humidity conditioning treatments: brown rice and white rice.

Rice grains have a unique safe humidification rate, and if water is added above this rate, the surface layer of the rice grain will rapidly absorb water and expand, causing cracks due to the strain caused by the sudden change in moisture content with the inner layer of the rice grain. There are restrictions on the rate of humidification.

As a method of humidifying brown rice in the former case, there is a rice grain moisture addition method disclosed in Japanese Patent Publication No. 53-20429.
In this method, the rice grains are circulated three times or more per hour, and the water content of the rice grains is increased to 0.67% or less per hour by adding water using a water adding device. Therefore, a large amount of moisture is temporarily applied to the surface of the rice grain within 10 seconds at the moisture applying portion, and if the applied moisture becomes even slightly excessive, cracks will occur in the rice grain. During the milling process, humidified brown rice is usually
0.5-1.0% moisture is scattered. Therefore, in order to ensure a moisture content of around 15%, which improves the taste, it is necessary to
It is necessary to humidify around %. However, such high-moisture humidifiers have disadvantages such as increasing the size of the equipment, requiring a long time for humidification, and weakening the fracture rigidity of brown rice, which increases the occurrence of broken grains during the polishing process. There is. In addition, devices that intermittently add moisture in short periods of time are not suitable for polished rice that exposes the starch layer and has high water absorption.
It is unsuitable for use because it quickly absorbs the applied moisture and causes cracks.

Japanese Patent Laid-Open Publication No. 13659/1983 discloses the latter method in which polished rice is subjected to humidification treatment.
This product circulates the raw material, white rice, in a tank and maintains the temperature
A fine mist with a humidity of 90% or more at 18-25℃ is sprayed into the empty space inside the tank, and the fine mist is applied to each grain of white rice that is circulated for 12 minutes.
The moisture content of the raw white rice was reduced to 13
It is intended to provide humidity within ~17%. In this method, there is a large difference in volume between the fine mist spraying section and the circulation tempering section in the tank, so it is necessary to provide a large amount of moisture to the polished rice in the fine mist spraying section. If it is given to white rice, there is a risk that the white rice will crack. Therefore, if mild and modest humidification is performed, the humidification process takes a long time, and this also has the problem of increasing the size of the device and increasing the equipment cost.

In addition, humid air is continuously passed through the polished rice layer flowing down from the polished rice supply part to the discharge part of the humidification tank so that the water addition rate increases slightly, and at a predetermined time, the humidity reaches 0.2% per hour. A milled rice humidifier equipped with a humidification control device such as a moisture sensor, a time setting device, a storage device, an adder, and a comparison device was published in 1983-
It is known as Publication No. 84749. This thing is
Measure the milled rice at regular intervals during humidification to ensure that the increase in water content of the polished rice over a certain period of time, for example 60 minutes, is a certain value, for example 0.2% or more, and that the milled rice does not undergo rapid moisture expansion. , the highest level of technology that automatically controls the amount of humidification by emitting a signal when the amount of humidification exceeds a certain value, making it possible to humidify white rice, which was previously considered impossible, without causing cracks in the white rice. belongs to. However, in order to humidify rice within an acceptable and safe range without causing cracks in the rice, humidifying rice with a moisture content of 13% to a moisture content of around 15% requires a large-sized device and high equipment costs. Along with this, there were other problems such as the long time required for operation.

[Problem to be solved by the invention]

In order to solve the above-mentioned problems, the present invention is capable of humidifying rice grains at a rate higher than the established water absorption rate (0.2% per hour), shortening the humidification processing time as much as possible, and miniaturizing the device. The technical problem is to provide a rice grain humidity control method and device that can reduce equipment costs.

[Means to solve the problem]

In order to achieve the above technical problem, the rice grain humidity control method of the present invention adds moisture to stationary rice grains or flowing rice grains (spraying a mist from a nozzle, spraying a mist into an air path, etc.). The rice grains are humidified by air supply (including blowing air, etc.) in a moisture infiltration device under pressure, and the moisture that has been humidified on the surface layer of the rice grains is infiltrated into the inner layer of the rice grains.

In addition, the rice grain humidity control device of the present invention can heat the air,
It consists of a humidifier equipped with a water addition device connected to an air conditioner that regulates cooling, and a pressurized tank equipped with a pressurizing device such as a compressor or high-pressure blower, with air cutoff valves installed at the rice grain supply and discharge sections. It is characterized by a configuration in which the rice grain circulation process is formed by connecting the water infiltration device with the water infiltration device through a flow path such as a conveyor and a downflow gutter.

[Effect]

The rice grains, which have been added with water within the allowable range that does not cause cracks in the rice grains, are kept confidential by the air cutoff valves installed in the supply and discharge parts of the pressurized tank, and are not pressurized by compressors, etc. It is fed into a moisture infiltration device which is maintained under pressure by the device. The rice grains fed into the device are pressurized and the moisture that has been humidified on the surface layer penetrates into the inner layer, eliminating the moisture difference between the surface layer and the rice grain, resulting in rice grains that are almost uniformly humidified over the entire surface of the rice grain. After any predetermined time has elapsed,
It is discharged into normal pressure air through an air cutoff valve provided at the discharge part of the moisture infiltration device, and only the pressurized air that has entered the inner layer of the rice grain along with the moisture is degassed.

〔Example〕

A first embodiment of the present invention will be described based on FIG. Reference numeral 7 denotes a humidifying air passage, in which a spray device 4 connected to a water tank 2 via a water pipe 3 is installed, and an air conditioner 5 and a blower 6 are installed, each having an air warmer and a cooler installed therein. The moisture adding device 1 is configured by connecting the two through the humidifying air passage 7. Inside the humidifying tank 10, a plurality of chevron-vein moisture supply gutter 13 and a chevron-vein-stripe exhaust gutter 14 are arranged alternately in parallel in multiple stages, and an air exhaust chamber 16 is provided on one side wall 15 of the humidifying tank 10. The exhaust gutter 14
On the other side wall 11, the moisture addition device 1 is connected to a humidification chamber 12 via a humidification air passage 8 to form a humidification device 9. A rice grain dispersion plate 17 is rotatably mounted on the rice grain supply part 18 of the humidification tank 10, and an umbrella-shaped adjustment board 20 for uniform flow of rice grains is provided in the flow path part 19 at the bottom of the humidification tank 10. A road 21 is provided.

22 is a humidity sensor attached to the ventilation chamber 16;
23 is a moisture detection sensor, 24 is a temperature sensor, and each of the sensors 22, 23, 24, and the plurality of nebulizers and air conditioner 5 built into the spray device 4 are electrically connected to a control device 47. ing. The control device 47 includes display units such as a temperature display 48 , a moisture display 49 , and a humidity display 50 , a switch 51 for the warmer or cooler of the air conditioner 5 , and a plurality of display units in the spray device 4 . Nebulizer control switch 52... and electric motor 26,
39 operating switches 53, 54, etc. will be installed. Further, the temperature sensor 22 is provided with a control circuit including a comparator that controls the humidification amount of the spray device 4 based on the detected value of the humidity sensor 22, and a reference temperature value.
A switching circuit is provided internally for switching between the warmer and the cooler of the air conditioner 5 depending on the detected value. 5
5 is a changeover switch for switching the operation of the device to autorotation or manual operation.

The rice grain supply section 27 of the pressurized tank 29 and the humidifier 9
A supply section air cutoff valve 25 is installed in a flow path connected to the discharge path 21 of the air supply section. The valve 25 is driven by an electric motor 26, and a discharge part air cutoff valve 38 driven by the electric motor 39 is provided in the discharge part 37 of the pressurized tank 29 to ensure airtightness of the pressurized tank 29. Compressor 30
An overpressure device 35 is formed by interposing a pressure regulating valve 31, a pressure gauge 32, and an air filter 33 in an air pipe 34 connected to the pressurizing tank 29.
The water infiltration device 28 is configured by being connected to the water infiltration device 28. 3
6 is a pressure gauge that displays the air pressure inside the pressurized tank 29. The transmission motors 26 and 39 that drive both air cutoff valves 25 and 38 are connected to the moisture detection sensor 23 via a motor operating circuit installed in a control device 47.
The motor operating circuit is equipped with several types of timers, and a moisture reference value is set in stages so that the rotational speed or operation/stop of the electric motors 26 and 39 is automatically controlled based on the detection value of the moisture detection sensor 23. It has been formed.

A switching valve 40 is provided in the flow path connected to the discharge section air cutoff valve 38 of the moisture infiltration device 28. Switching valve 40
shows the circulation process of rice grains formed by the rice lifter 43 and the downflow gutter 45 connected to the flow path 41, and the flow of the rice grains through the flow path 4.
The flow of rice grains is switched to one of the channels of the rice lifting machine 46 connected to the rice pump 2. A supply hopper 44 is fixed to the rice grain supply section of the rice lifter 43.

Next, the operation of the above embodiment will be explained.

The rice grains supplied from the supply hopper 44 to the rice lifter 43 and lifted are supplied to the humidification tank 10 from the downflow gutter 45, and are spread and packed into the humidification tank 10 in a substantially even shape by the diffusion plate 17. The rice temperature detected by the temperature sensor 24 is sent to the control device 47, and a signal from the switching circuit operates either the warmer or the cooler in the air conditioner 5 of the moisture addition device 1 to automatically adjust the temperature to the appropriate temperature for humidification. While being adjusted, the detected value of the rice temperature is displayed on the temperature display 48. The spray device 4 generates mist in the humidifying air passage 7, and the humid air is supplied from the humidifying air passage 8 to the humidifying chamber 12 by the blower 6. Humidification room 1
The moist air blown from 2 to the humidification gutter 13 humidifies the rice grains in the process of passing through the rice grain layer and exiting to the air exhaust gutter 14. The humidity of the exhaust air collected from the exhaust gutter 14 into the exhaust chamber 16 and discharged outside the machine is detected by the humidity sensor 22, and the detected value is communicated to a control circuit in the control device 47. Based on the output signal from the comparator, the number of operations of the plurality of nebulizers in the spray device 4 is appropriately controlled to increase or decrease the amount of humidification of the rice grains. The detected value of the humidity sensor 22 is
It is displayed on the humidity display 50.

For a certain period of time after the humidifying device 9 starts operating, a timer of the motor control circuit installed in the control device 47 stops the operation of the electric motor 26, and after a predetermined period of time has elapsed, the electric motor 26 is activated to supply air to the supply section. Shutoff valve 2
Drive 5. Downstream section 19 at the bottom of the humidifier 9
The unhumidified rice grains stored in the humidifying tank 10 that have not been subjected to humidifying action are uniformly flowed down in the humidifying tank 10 by the adjustment panel 20, and the rice grains are discharged from the air cutoff valve 25 through the discharge path 21.
The water is supplied to the moisture infiltration device 28 via the water infiltration device 28. When the moisture detection sensor 23 detects a moisture value different from the previous one, the discharge section air cutoff valve 38 is driven by the electric motor 39 without operating the pressurizing device 35 while the timer is operating for an arbitrarily determined time. Then, the non-humidified rice grains are discharged from the infiltration tank 29. The non-humidified rice grains are discharged into the circulation process by the switching valve 40 and re-supplied to the humidification tank 10. When the moisture detection sensor 23 detects different moisture values and a certain period of time has elapsed, the operation of the electric motor 39 is stopped, and the pressurizing device 35 is activated to pressurize the inside of the pressurizing tank 29.

As the operating method in the above embodiment, there are two operating methods shown below.

a The rice grains filled in the humidifying device 9 and the moisture infiltrating device 28 are humidified and pressure infiltrated by driving both the air cutoff valves 25 and 38 continuously or intermittently at intervals of several seconds in synchronization.

b The rice grains filled in the humidifying device 9 and the moisture infiltration device 28 are each kept for several tens of minutes, and the discharge and supply are alternately discharged and supplied with a time difference between the discharge section air cutoff valve 38 and the supply section air cutoff valve 25, and the rice grains are kept at a constant rate. Rice grains are humidified and pressure-infiltrated by volume.

In the former case, the rice grains are humidified to a constant value while the rice grains flow down from the supply rear part 18 of the humidifier 9 to the downstream stroke part 19. If the moisture detection sensor 23 detects that the humidification rate is insufficient than a certain level and informs the motor drive circuit, the electric motor 26 is controlled by the output signal from the moisture reference value of the circuit, and the supply unit air is The rate of humidification of the rice grains is adjusted by appropriately changing the rotation speed of the shutoff valve 25.
Then, until the moisture detection sensor 23 detects the target humidity control rate (moisture content), the rice grains flow down the moisture infiltration device 28, are discharged into the circulation process, and are returned to the humidification device 9 again.

In the latter operation in which humidification and pressurized infiltration are carried out for each fixed volume, the discharge part air cutoff valve 38 and the supply part air cutoff valve 2 are activated by an arbitrarily determined predetermined timer or a detection signal from the moisture detection sensor 23.
5 and are driven with a time difference. Since the rice grains are processed to a predetermined humidification rate by alternately switching between the humidifying tank 10 and the pressurizing tank 29, it is convenient when carrying out humidifying processing of small lots. When the target humidity control rate (moisture content) is reached, the rice grains whose humidity has been controlled by the switching valve 40 flow out from the outflow path 42 to the rice lifter 46 and are supplied to the next process.

Furthermore, the operation of the present invention in which the humidifying device 9 and the moisture permeation device 28 are connected will be explained in detail. Conventionally, when water is added to rice grains at a rate higher than the water absorption rate of the rice grains, the surface layer of the rice grain absorbs excess water and expands rapidly, causing distortion in the inner layer of the rice grain, which causes cracks in the rice grain. . In the present invention, the humidifier 9
Even if the amount of water added to the rice grains exceeds the water absorption rate, it is supplied to the water infiltration device 28 before the surface layer of the rice grains absorbs water and rapidly expands.
Inside the rice grain, moisture that has made the surface layer of the rice grain highly humid is pressurized and permeated into the inner layer of the rice grain in a short time by the pressurizing action of the pressurizing device 35. Then, the moisture difference between the surface layer and the inner layer of the rice grain is adjusted to a moisture difference within the safe range of the water absorption rate, and during the downstream process or residence time until the rice grain is discharged from the moisture infiltration device 28, the moisture difference between the surface layer and the inner layer of the rice grain is further adjusted. The moisture difference between the two parts is tempered to a minute difference and then discharged. Further, the pressurized air is degassed before being supplied to the circulation process, and is humidified and processed in a manner that does not cause damage to the re-humidification or processing in the next process. This makes it possible to add moisture at a rate higher than the water absorption rate of rice grains, which was previously considered impossible, and achieves several times the humidity control performance compared to conventional devices, while also making the device more compact and reducing equipment costs. It can be done inexpensively.

Note that the humidity sensor 22 provided in the humidifier 9,
The locations at which the moisture detection sensor 23 and the temperature sensor 24 are attached are not limited to the locations shown in the drawings, but can be attached at any arbitrary positions. Further, the operation of the device can be arbitrarily selected between automatic and manual by means of a switch 55.

FIG. 2 shows a second embodiment of the invention. A water adding device 58 in which a water tank 55 and a compressor 57 are connected to a two-fluid nozzle is arranged to face a rice grain supplying rear part 60 of a rotating drum 59. bearing 61,
Rubber wheels 67, 68, 69, 70 are mounted on rotating shafts 65, 66 mounted on shafts 62, 63, 64, so that the rotating drum 59 is rotatably mounted horizontally. A humidifying device 72 is formed by loosely inserting a wind cylinder connected to an air conditioner 71 into the supply rear portion 60 of the rotating drum 59. A downflow gutter of a rice grain feeding machine 73 is connected to the supply side of the humidifying device 72, a receiving gutter 74 is provided on the discharge side of the humidifying device 72 and connected to a relaying grain frying machine 75, and the discharge path is connected to an adjustment tank. Connect to 76.

A grain feeding section air cutoff valve 7 is installed in the rice grain supplying section of the pressurized tank 77.
8, a grain discharge section air cutoff valve 79 is provided in the rice grain discharge section. An air pressure adjustment device 81 is interposed in the compressor 80 to form a pressurizing device 82, and the pressurizing device 82 is connected to the pressurizing tank 77 to form a moisture permeation device 83. A switching valve 84 is provided in the flow path connected to the grain threshing section air cutoff valve 79. The discharge flow path between the take-out grain fryer 86 that transports the rice grains to the next process and the circulation grain fryer 85 that forms a circulation process that returns the rice grains subjected to pressure infiltration processing to re-humidification is connected to the rice grain supply fryer 86. The supply department of grain machine 73 has been contacted.

The operation of the second embodiment will be explained below. The connection between the humidifying device 72 and the moisture permeation device 83 is formed by a flow path of a grain frying machine, etc., and the humidifying device 72
Since the rice grains are installed horizontally, the device can be configured at a low level, and the rice grains to which water has been added are rolled in an avalanche shape by the rotation of the rotating drum 59, and the rice grains are reversed to eliminate spots of water addition, resulting in uniform grains all over the country. Humidity is controlled. Other functions are the same as those in the first embodiment, so explanations will be omitted.

FIG. 3 shows a third embodiment of the present invention. A spray device 89 disposed in a humidifying air path 96 is connected to a water tank 87 , and a moisture adding device 91 formed by connecting an air conditioner 88 to a blower 90 is connected to a humidifying tank 92 . A humidification gutter 93 and an exhaust gutter 94 are provided in the humidification tank 29.
is provided to form a humidifying device 95. Pressure device 1
01 is connected to a pressurized tank 99, and a grain feeding section air cutoff valve 97 is provided in a flow path connecting the pressurized tank 99 and the humidifying tank 92. A water infiltration device 100 is constituted by the cutoff valve 97 and a grain threshing section air cutoff valve 98 provided in the discharge path of the pressurized tank 99. A flow path connected to the grain threshing section air cutoff valve 98 is connected to the relay grain lifting machine 102.
A switching valve 103 is provided in the grain removal section of the grain lifting machine 102, one of which is connected to the supply section of the supplying grain lifting machine 104 that supplies rice grains to the humidifying device 95, and the other is connected to the supply port of the rice milling device 107. adjustment tank 10 connected to
Connect to 6. The discharge part of the rice milling device 107 and the polished rice grain frying machine 108 are connected through a flow path.

The operation of the third embodiment will be explained. The brown rice that has been humidified by the humidifying device 95 is subjected to a moisture infiltration device 100 in which the moisture that has been humidified on the surface layer of the rice grain is infiltrated into the inner layer of the rice grain. Then, the rice grains are processed by one or more cycles of humidification and pressurized infiltration, and then supplied to the adjustment tank 106 by operating the switching valve 103. The tank 106
The brown rice sent to the plant is processed to the right temperature and humidity in a short time that cannot be expected with conventional equipment. Furthermore, the rice is not temporarily stored in a tempering tank, but is supplied to the rice milling device 107 continuously during the humidification process. Therefore, the rice milling efficiency is improved without reducing the fracture rigidity of rice grains, which is a defect of conventional equipment, and a high yield can be obtained without generating broken grains.

4 to 6 show another embodiment of the humidifying device.

The humidifying device 117 shown in FIG.
A plurality of ventilation porous walls 110 are erected inside with appropriate distances. A humidification air cylinder 118 provided on one side wall of the humidification tank 109 is connected to a moisture addition device 111 including a spray device, an air conditioner, a blower device, etc., and communicates with the humidification chamber 112 . A rice grain humidifying chamber 115 is formed between an air exhaust chamber 113 communicating with an air exhaust cylinder 114 provided on the other side wall and the humidity chamber 112. A rotary valve 116 for controlling the outflow of rice grains is rotatably mounted on the bottom of the humidifying chamber 115. The humid air generated by the moisture addition device 111 is transferred to the humidity chamber 1.
12 to the rice grain layer in the humidification chamber 115 to humidify the rice grains. The exhaust air is discharged from the exhaust chamber 113 to the outside of the machine via the exhaust shell 114.

A humidifying device 127 shown in FIG. 5 is provided with a front wall 120 that forms a flow path 119 for rice grains, and a rear wall 121 whose lower part is bent in an inclined shape. Front wall 1
An on-off valve 122 connected to 20 and bent in an F-shape...
A moisture adding device 124 is connected to a wind cylinder 125 which is rotatably mounted on a shaft and communicates with the rice grain flow path 119. Moist air generated by the moisture addition device 124 is ventilated through the opening of the on-off valve 122 from the wind barrel 125 to humidify the rice grains, and the exhausted air is passed through the rear side wall 121.
The air is discharged to the outside of the machine from an air exhaust cylinder 126 that communicates with the air. The humidified rice grains are discharged by the rotary valve 123 and supplied to the moisture infiltration device.

The humidifying device 138 shown in FIG.
A rice lifting device 129 formed of a spiral body and a cylinder with an open top and bottom is erected inside the rice cooker. As a water addition device 134, a water pipe 132 is connected to an electromagnetic pump 131 installed in a water tank 130. A nozzle 133 is attached to the tip of the water pipe 132 so as to face into the humidifying tank 128. An intake ring body 135 is installed on the lower peripheral wall of the humidifying tank 128 and connected to an exhaust fan 136, and an opening/closing plate 137 is slidably provided at the bottom of the humidifying tank 128. To describe its function, the electric motor 13
9 to discharge the rice grains from the upper part of the rice lifting device 129 in the form of scattered granules, and the water adding device 1 to the flowing rice grains.
34 to spray water from the nozzle 133.
The rice grains that have been humidified by adding water flow down inside the humidifying tank 128 and are recirculated or discharged from the bottom of the humidifying tank 128 by the opening/closing plate 137 .

〔Effect of the invention〕

As described above, in the rice grain humidity control method of the present invention, the rice grains are humidified by adding moisture to the rice grains, and then the rice grains are infiltrated into the surface layer of the rice grains in a moisture infiltration device under pressure, thereby reducing the moisture difference between the surface layer and the inner layer of the rice grains. Since it is possible to adjust the humidity to the same moisture level in a short time, which is faster than the safe water absorption rate of rice grains under normal pressure, it has the remarkable effect of significantly increasing the conventional humidification rate and shortening the humidification time. .

Further, according to the rice grain humidity control device of the present invention, since the humidification device and the moisture infiltration device are connected, the rice grains whose surface layer has been humidified with high moisture content by adding moisture to the rice grains are transferred to the moisture infiltration device. Moisture in the surface layer is transferred to the inner layer of the rice grain in a short time by pressurization, and the humidity is adjusted to the same moisture level, and the air that has entered the inner layer of the rice grain is deaerated at the same time as it is discharged from the moisture infiltration device.
It is now possible to add water at a rate that exceeds the safe water absorption rate of rice grains under normal pressure, which was previously considered impossible, and greatly improves humidification rate and humidification efficiency, making the device as compact as possible and reducing equipment costs. It has a great effect on

[Brief explanation of the drawing]

FIG. 1 is a partially sectional side view showing a first embodiment of the invention, FIG. 2 is a side view showing a second embodiment of the invention, and FIG. 3 is a side view showing a third embodiment of the invention. The side view, FIG. 4, FIG. 5, and FIG. 6 showing the embodiment are views of another embodiment of the humidifying device of the present invention. 1... Moisture addition device, 2... Water tank, 3... Water pipe, 4... Spraying device, 5... Air conditioner, 6... Air blower, 7... Humidifying air path, 8... Humidifying air path, 9 ……
Humidification device, 10... Humidification tank, 11... Side wall, 12
...humidity room, 13...humidity gutter, 14...exhaust gutter,
15... Side wall, 16... Exhaust chamber, 17... Rice grain stirring plate, 18... Supply port section, 19... Downstream stroke section,
20... Equal flow adjustment panel, 21... Discharge path, 2
2... Humidity sensor, 23... Moisture detection sensor, 24... Humidity sensor, 25... Supply section air cutoff valve, 26... Electric motor, 27... Rice grain supply section,
28... Moisture penetration device, 29... Pressure tank, 30...
...Compressor, 31...Pressure control valve, 32...
...Pressure gauge, 33...Air filter, 34...
Air pipe, 35...pressure device, 36...pressure gauge, 3
7... Discharge section, 38... Discharge section air cutoff valve, 39
...Electric motor, 40...Switching valve, 41...Flow path,
42... Outflow channel, 43... Rice lifter, 44... Supply hopper, 45... Downflow gutter, 46... Rice lifter, 4
7...Control device, 48...Temperature display, 49...
Moisture indicator, 50... Humidity indicator, 51... Changeover switch, 52... Control switch, 53, 54...
...Switch for operating switch, 56...Water tank, 57...
... Compressor, 58 ... Moisture addition device, 59
...Rotating drum, 60...Rice grain supply port, 61,
62, 63, 64... Bearing, 65, 66... Rotating shaft, 67, 68, 69, 70... Rubber wheel, 71
... Air conditioner, 72 ... Humidification device, 73 ... Grain frying machine for supplying rice grains, 74 ... Grain receiving gutter, 75 ... Relay grain frying machine, 76 ... Adjustment tank, 77 ... Pressure tank, 7
8... Grain feeding section air cutoff valve, 79... Grain removal section air cutoff valve, 80... Compressor, 81... Air pressure adjustment device, 82... Pressurization device, 83... Moisture penetration device, 84... Switching valve, 85... Circulating grain frying machine, 8
6...Grain removal machine, 87...Water tank, 88...Air conditioner, 89...Spraying device, 90...Blower, 9
1... Moisture addition device, 92... Humidification tank, 93...
Humidification gutter, 94... Exhaust gutter, 95... Humidification device, 9
6... Humidification air path, 97... Grain feeding section air cutoff valve, 9
8... Grain removal section air cutoff valve, 99... Pressurized tank, 10
0... Moisture penetration device, 101... Pressure device, 10
2...Relay grain frying machine, 103...Switching valve, 104
... Grain frying machine for supply, 105 ... Humidification device, 106
...Adjustment tank, 107...Rice polishing device, 108...
...Grain frying machine for polished rice, 109... Humidification tank, 110...
Porous wall for ventilation, 111... Moisture addition device, 112
... Humidification chamber, 113 ... Exhaust chamber, 114 ... Exhaust cylinder, 115 ... Humidification chamber, 116 ... Rotary valve, 11
7... Humidification device, 118... Humidification air cylinder, 119...
...Flow process, 120...Front side wall, 121...Rear side wall, 122...Opening/closing valve, 123...Rotary valve, 12
4...Moisture addition device, 125...Opening/closing valve, 126
... Exhaust cylinder, 127 ... Humidification device, 128 ... Humidification tank, 129 ... Rice lifting device, 130 ... Water tank, 1
31...Electromagnetic pump, 132...Water pipe, 133...
... Nozzle, 134 ... Moisture addition device, 135 ...
Intake ring body, 136...exhaust fan, 137...opening/closing plate, 138...humidifying device, 139...electric motor.

Claims (1)

[Scope of Claims] 1. The rice grains are humidified by passing a mist-like moisture-containing gas through the rice grain layer, and then the moisture adhering to the surface layer of the rice grains is infiltrated into the interior of the rice grains using a pressurized moisture infiltration device. A rice grain humidity control method characterized by: 2. A humidifying device equipped with a mist moisture generating device and a moisture penetrating device comprising an air cutoff valve in the supply section and discharge section of a pressurized tank connected to an air compressor are connected via a flow path. Characteristic rice grain humidity control device.