JPS63294739A - Humidifying apparatus for rice grain - Google Patents

Abstract

PURPOSE:To enable the installation of a humidifier on a lower floor, by erecting a grain elevator composed of a screw conveyor, opening an inlet port of the conveyor under the bottom part of a humidifying chamber furnished with a moisturizing apparatus and a rice-grain feeding port and opening a discharging port above the bottom of the humidifying chamber. CONSTITUTION:For example, a screw conveyor 8 acting as a grain elevator is erected at the lower end of a humidifying chamber 3. The shaft of the conveyor is directly connected with a motor 9 fixed to an outer wall. An inlet port 10 for humidified rice grains is opened at the lower end of the conveyor 8 and an outlet port 11 is opened at the top of the conveyor. A discharging port 12 is opened at a position slightly lower than the outlet port 11 and is connected with a discharging trough 13 extending through the wall of the humidifying chamber 3 and slantly protruding to the outside of the chamber. A level sensor 17 is attached at the level of the outlet port 11. When rice grains humidified to a prescribed water content with a humidifier 20 reach the level of the sensor 17, the motor 15 is energized to rotate a rotary valve 14 and the rice is discharged from the humidifying chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rice grain humidifying device for correcting the moisture content of rice grains.

[Prior art]

Conventionally, after harvesting, overly dried rice grains are subjected to humidification treatment in order to achieve a high yield and smooth grinding, or to improve taste.

For example, as shown in Japanese Patent Publication No. 56-53333 (see Fig. 3), a grain frying device 102 is attached to a tank 101 to circulate and move the rice grains in the tank 101, and a moisture adding device 103 is used to add moisture. There is a known rice grain moisture addition device that replenishes rice grains and repeats grain-to-grain friction between rice grains to promote water absorption and finish the rice grains at an appropriate content (approximately 15%). Furthermore, in Japanese Patent Application Laid-Open No. 61-174949, air-blocking on-off valves are provided in the rice grain supply section and the discharge section of a humidification chamber that accommodates rice grains with water added to the surface of the rice grains.
A rice grain humidifying method and a rice grain humidifying device that connect a gas pressurizing device to the humidifying chamber to allow moisture on the surface of the rice grains to permeate into the inner part of the rice grains under a pressure higher than atmospheric pressure, thereby moistening the rice grains rapidly and uniformly. is disclosed.

[Problem that the invention seeks to solve]

By the way, in the above-mentioned "rice grain moisture addition device" and "rice grain humidification method and rice grain humidification device," the rice grains supplied by a grain frying device such as a packet elevator are discharged from the tank 101 or the lower end of the humidification chamber after moisture is added. Since the grains are transported to the next stage by the grain lifting device, space is required below the tank 101 and the humidifying chamber to provide a discharge valve and a discharge chute.
1), it is unavoidable to install the tank 101 and the humidifying chamber at a certain height (see Japanese Patent Publication No. 58-56433), which has become a bottleneck when installing this type of rice grain humidifying device.

In view of the above, the technical object of the present invention is to provide a rice grain humidifying device having the same capacity and ability, and having a lower height.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides a rice grain humidifying device consisting of a humidifying tank equipped with a water addition device and a rice grain supply port. A technical measure was taken in which the grain device was erected and a discharge path leading from the discharge port to the outside of the humidifying tank was formed.

[For production]

As a result, the rice grains that are introduced into the humidifying tank from the rice grain supply port and moistened by the moisture addition device flow into the grain frying device through the inlet and are fried, and then are sent from a high place to the outside of the machine via the discharge port and the discharge path. be discharged.

[Embodiments of the invention]

A preferred embodiment of the present invention will be described based on the drawings.

A rotary valve 2 serving as an air cutoff valve provided below the adjustment tongue 61 is connected to a supply gutter 6 connected to the rice grain supply port 4 on the upper part of the humidifying tank 3, and is also operatively connected to the variable speed electric motor 5. The supply vA5 may be provided with a rice grain detection sensor 7. Further, the adjustment tank 1 is equipped with a rice grain moisture detector 45 and a rice temperature detector 46.

On the other hand, a screw conveyor 8 serving as a grain lifting device is installed upright at the lower end of the airtight humidifying tank 3. The shaft of the screw conveyor 8 is directly connected to a variable speed electric motor 9 fixed to the outer wall of the humidifying tank 3, and the screw conveyor 8 has an inlet 10 at its lower end and an outlet 11 at its upper end. Further, a discharge port 12 is opened slightly below the discharge port 11, and a discharge port 113 is connected to the discharge port 12, which penetrates the tank wall of the humidifying tank 3 and protrudes outward from the humidifying tank 3 in an inclined manner. A discharge path leading to the outside of the humidifying tank 3 is formed. Furthermore, a rotary valve 14 as a feeding device and an air cutoff valve is interposed in the discharge gutter 13, and a variable speed electric motor 15 for driving the rotary valve 14 is installed near the rotary valve 14.

The humidifying tank 3 is erected by supporting legs 16, and on the wall of the humidifying tank 3, a level sensor 17 is installed at the height of the outlet 11 of the screw conveyor 8, and a rice grain moisture detector 18 is installed below the level sensor 17. are attached to each. 19
is an atmospheric pressure detector that measures the atmospheric pressure inside the humidifying tank 3.

Next, the moisture adding device 2° attached to the humidifying tank 3 will be explained. An air supply port 21 is provided at the bottom of the humidifying tank 3, and an exhaust port 22 is provided at the top thereof, and an air supply pipe 23 is inserted into the humidifying tank 3 from the air supply port 22, and an exhaust pipe 24 is provided at the exhaust port 22.
Connect. A thermometer 25 for blowing air is attached to the air supply pipe 23, and the other end of the air supply pipe 23 is connected to the high pressure turbo blower 2.
It is connected to the exhaust port No. 6. In addition, high pressure turbo blower 26
The air intake port and the exhaust pipe 24 are connected through a connecting pipe 27,
This forms an air circulation path. 28 is a variable speed electric motor that drives the high pressure turbo blower 26.

The exhaust pipe 24 is provided with an air on-off valve 29 for shutting off the air circulation path, and a branch pipe 30 is also provided.
0 is provided with an air on-off valve 31, and an air on-off valve 29.
Servo motors 32, 33 are provided for rotating the 31, respectively. Furthermore, an injector device 34 formed with different pipe diameters is provided at the connection between the communication pipe 27 and the exhaust pipe 24 in order to take in fresh air.

A heater 35 and a cooler 36 for controlling the temperature of air supplied to the high-pressure turbo blower 26 are attached to the communication pipe 27, and a mist generator 38 comprising an ultrasonic vibration element 37 is connected thereto. 57 is a water tank that supplies water to the fog generator 38.

The control section of this embodiment will be described below with reference to FIG. 2. Input/output circuit 39°Central processing unit (CP)
U)40. Storage device (ROM, RAM) 41. On the input side of the microcomputer 43 consisting of the arithmetic unit 42, there is an operation panel 44 with a display, a rice grain moisture detector 18 attached to the humidifier 1ff3, a rice grain moisture detector 45 attached to the adjustment tank 1, and a rice temperature detector. 46, a thermometer 25 that measures the temperature of the air blown into the humidifying tank 3, an air pressure detector 19 that measures the air pressure inside the humidifying tank 3, a rice grain detection sensor 7 attached to the supply gutter 5, and a The provided level sensor 17,
Connect them to each other. On the other hand, on the output side of the microcomputer 43, there are variable speed electric motors 6.
15, the ultrasonic vibration element 37 of the fog generator 38, the heater 35, the cooler 36, the variable speed electric motor 28 that rotates the high pressure turbo blower 26, and the servo motor 32 that opens and closes the air on/off valves 29 and 31. 33 and a variable speed electric motor 9 that drives the screw conveyor 8 are connected to each other.

In the above configuration, the operation will be explained below.

When you press the start button on the operation panel 44, the variable speed electric R6
is activated to rotate the rotary valve 2, and the rice grains supplied into the adjustment tank 1 through the chute pipe or the like are successively introduced into the humidification tank 3 via the supply gutter 5. At this time, when a "rice grain present" signal is input from the rice grain detection sensor 7 of the supply gutter 5, a command from the microcomputer 43 is output to the drive circuit 55, the variable speed electric motor 9 is started, and the screw conveyor 8 rotates at a predetermined speed. As a result, the rice grains inputted from the rice grain supply port 4 flow through the inflow port 10 of the screw conveyor 8, are lifted, and are transported to the discharge port 1.
2 and flows down the discharge gutter 13. However, since the rotary valve 14 is not rotating, the rice grains are discharged into the discharge gutter 13.
It is discharged from the discharge port 11 to the bottom of the humidifying tank 3 without flowing out from the end, flows into the screw conveyor 8 again from the inflow port 10, is pumped, and is discharged from the discharge port 11. This circulation (mixing) of rice grains is repeated until a certain amount of rice grains accumulates, that is, until the level sensor 17 is activated.

On the other hand, the high-pressure turbo blower 26 and fog generator 38 are started by the "rice grain present" signal from the rice grain detection sensor 7.
Moist air is supplied into the humidifying tank 3, but prior to this, the rice grain moisture detector 45. The rice grain detector 46 measures the moisture content and rice temperature of the raw rice, and these detected values are input to the microcomputer 43 and averaged, and this average value is preset in the storage device 41. The target moisture content and the maximum humidification rate are calculated, and the frequency (amount of moisture added) of the ultrasonic vibration element 37 is determined. Then, if necessary, the heater 35
Alternatively, the cooler 36 operates to supply the moist air at a controlled temperature.

In this way, when the humid air from the moisture addition device 20 is supplied into the humidifying tank 3, the atmospheric pressure inside the humidifying tank 3 increases, and when the atmospheric pressure detector 19 detects a predetermined atmospheric pressure, the servo motor 32 is started and the air is The on-off valve 29 is gradually opened and exhaust is performed through the exhaust pipe 24, and the humidifying tank 3 is maintained at a constant high pressure.

Now, the rice grains that are circulated and flowed by the squirt conveyor 8 are exposed to humid air and are placed under high pressure while flowing, so that the water in the form of a mist of ultra-fine particles penetrates into the inner layer of the rice grains without condensing on the surface of the rice grains. The moisturizing effect progresses at a high rate higher than the natural water absorption rate of rice grains (approximately 1.2%/Hr) and reaches the target moisture content.

When the rice grains input from the rice grain supply port 4 accumulate and actuate the level sensor 17, the variable speed electric motor 15 is activated by the signal from the level sensor 17, the rotary valve 14 is rotated, and the rice grains are transported by the screw conveyor 8. The rice grains flow down a discharge v113 from a discharge port provided at a high place, are discharged to a supply section such as a packet elevator, and are conveyed to the next process.

During this time, raw rice is being fed from the rice grain supply port 4, and the rice grains that have fallen to approximately the level of the level sensor 17 in the humidifying tank 3 are flowing downward toward the inlet 10 at the bottom of the humidifying tank 3. It is subjected to a humidifying action, finished to a predetermined moisture content, and then transported by a screw conveyor 8 and sequentially discharged into a discharge gutter 1.
It flows out from 3. In this way, by circulating the rice grains in the humidification tank in the early stage before they reach the level sensor, it is possible to evenly reach the target moisture content of the rice grains, which is particularly effective in single-pass type humidifiers. It is.

Although this embodiment has been described with reference to a so-called pressurized humidifying device, the rice grain humidifying device of the present invention is not limited to one that uses pressurizing.

Further, the height of the outlet of the grain lifting device is arbitrary (see the imaginary line in FIG. 1), and is designed to be an appropriate height.

〔Effect of the invention〕

As described above, according to the present invention, a grain frying device having an inlet at the bottom and a discharge port at the top is installed at the bottom of the humidification tank, and a discharge path is formed from the discharge port to the outside of the humidification tank. So,
The humidified rice grains are not discharged from the bottom of the humidification tank, but are fried by an m-membrane device and discharged through a discharge channel from a discharge port opened at a high place. The tank can be installed low. Therefore, it can be easily installed in a relatively small storefront rice mill (rice store), etc., without significantly remodeling the inside of the store.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a control block diagram thereof, and FIG. 3 is a longitudinal sectional front view of a conventional example. 1...Adjustment tank, 2...Rotary valve, 3.
... Humidification tank, 4 ... Rice grain supply port, 5 ... Supply gutter, 6
... Variable speed electric motor, 7... Rice grain detection sensor, 8.
...Screw conveyor, 9...Variable speed electric motor, 1
0...Inflow port, 11...Discharge port, 12...Discharge port, 13...Discharge gutter, 14...Rotary valve, 1
5... Variable speed electric motor, 16... Support leg, 17... Level sensor, 18... Rice grain moisture detector, 19...
Air pressure detector, 20... Moisture addition device, 21... Air supply port, 22... Exhaust port, 23... Air supply pipe, 24...
Exhaust pipe, 25... Thermometer, 26... High pressure turbo blower, 27... Connecting pipe, 28... Variable speed electric motor, 29
... Air on-off valve, 30... Branch pipe, 31... Electric on-off valve, 32.33... Servo motor, 34...
Injector device, 35... Heater, 36... Cooler, 37... Ultrasonic sensor, 38... Fog generator, 3
9... Input/output circuit, 40... Central processing unit, 41.
...Storage device, 42...Arithmetic unit, 43...Microcomputer-144...Operation panel with display,
45...Rice grain moisture detector, 46...Rice temperature detector, 4
7-56... Drive circuit, 57... Water tank.

Claims (3)

[Claims] (1) In a rice grain humidifying device consisting of a humidifying tank equipped with a water addition device and a rice grain supply port, a grain frying device having an inlet at the bottom and an outlet at the top is installed at the bottom of the humidifying tank, A rice grain humidifying device characterized in that a discharge path leading from the discharge port to the outside of the humidifying tank is formed. (2) A discharge port is opened above the discharge port of the grain frying device, and a level sensor is provided at approximately the height of the discharge port, and a level sensor is installed in the discharge path to indicate if there are rice grains. The rice grain humidifying device according to claim (1), further comprising a feeding device that operates only when detection is made. (3) The rice grain humidifying device according to claim (1) or (2), wherein the grain frying device comprises a screw conveyor.