JPH0218138B2 - - Google Patents

Description

[Detailed description of the invention] Industrial applications The present invention relates to a grinding rice polishing device.

Conventional technology In general, grinding rice milling machines mill rice grains by rotating the grinding rotor at high speed, so the rotational speed of the grinding rotor has very excellent characteristics, especially for polishing long-grain rice grains such as Indica varieties. We are equipped with
It has characteristics that make it suitable for both germ rice and sake-brewing rice.

However, as the temperature of rice grains increases, the properties of the rice grains become brittle, making them more likely to break into pieces during milling.Additionally, rising the temperature of rice grains during milling increases the viscosity of the bran, which also causes a decline in rice milling performance. Ta.

For this reason, conventional measures have been taken to mill long-grain rice grains such as Indica in high-temperature regions, such as at night when the rice temperature is lower in relation to the outside temperature. Measures were taken such as storing rice grains in a tank during rice milling and using the natural heat dissipation.

In addition, a grain cooling device is installed in the front stage of the rice milling machine,
A temperature control device for a grain cooling device is disclosed in Japanese Patent Application Laid-Open No. 1983-1972, which connects the outlet of the grain cooling device to the supply section of a rice milling machine and provides a temperature detection device in the discharge path of the grain cooling device.
It is proposed as Publication No. 5147.

Problems to be Solved by the Invention However, countermeasures such as milling rice at night when the rice temperature is lower, or storing rice grains in a tank during milling and using the natural heat dissipation, cannot be achieved due to the surrounding natural conditions. However, this method largely depends on the level of skill of the operator and the level of skill of the operator, and was not sufficient to prevent the occurrence of broken rice and reduction in rice milling efficiency as described above.

Furthermore, in the method described in Japanese Patent Application Laid-open No. 56-5147, it was difficult to cool the grains in a way that was compatible with changing rice milling temperatures.

It is an object of the present invention to address the above-mentioned problems and to
By detecting the temperature of the rice grains at the rice grain outlet of the rice grain grinding machine, a temperature as close as possible to the rice polishing temperature inside the rice grain grinding machine is detected, and this temperature is used to control the control device of the cold air supply device of the rice grain cooling device. Rice grains can be supplied to the grinding rice milling machine so that the rice grains are always at the most suitable temperature for grinding rice milling, which changes the rice milling temperature. It is an object of the present invention to provide a grinding rice milling device that can more reliably prevent the occurrence of broken rice and a decrease in rice milling efficiency due to rice rise.

Means for Solving the Problems The grinding rice polishing device of the present invention is equipped with a rice grain cooling device consisting of a container for storing rice grains and a cold air supply device for supplying cold air into the container in the front stage of the grinding rice polishing machine. , a rice grain outlet of the rice grain cooling device is connected to a rice grain supply port of the grinding rice polishing machine, a temperature sensor is provided at the rice grain discharge port of the grinding rice polishing machine, and the temperature sensor detects the rice grains by the detection signal thereof. The cooling device is characterized in that the cooling device is connected to a control device of the cold air supply device to control the cooling device.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

In Fig. 1, 1 is a grinding rice polishing machine, and a rice grain cooling device 2 is located above the grinding rice milling machine 1 in its previous stage.
The rice grain outlet 3 of the rice grain cooling device 2 is connected to the rice grain supply port 4 of the rice grinding machine 1, and the rice grain cooling device 2 includes a container 5 in which the rice grains are placed and a cold air supply device 6 that supplies cold air into the container 5. It consists of.

Inside the container 5 of the rice grain cooling device 2, a plurality of ventilation porous walls 7 are installed at appropriate intervals, and a plurality of cooling chambers 8 are formed by the ventilation porous walls 7, so that the rice grains and the cold air are directly connected to each other. A cold air supply section 9 is provided on one side wall of the container 5, and
An exhaust section 10 is provided on the other side wall of the container 5.

The cold air supply device 6 includes an air cooling section 12 and a blower 1
3. It consists of a heat exchanger 14, a compressor 15 and a control device 16, and a pipe 17 of the cold air supply device 6 passing through the heat exchanger 14 is connected to the cold air supply section 9 of the container 5.

Rice grain outlet 3 of rice grain cooling device 2 and grinding rice polishing machine 1
A first temperature sensor 11 is connected between the rice grain supply port 4 and the rice grain supply port 4.
The first temperature sensor 11 controls the rice grain cooling device 2 based on the detection signal from the first temperature sensor 11.
It is connected to the control device 16 of the cold air supply device 6, which controls the cold air supply device 6.

Inside the grinding rice polishing machine 1, a grinding trochanter 18 is horizontally suspended so as to be freely rotatable, and around the grinding trochanter 18, a porous-walled bran removing and polishing tube 19 is provided. A whitening chamber 20 is formed between the grinding rice milling machine 1 and the rice grain discharge port 21 of the whitening chamber 20 of the grinding rice milling machine 1.
A resistance plate 23 is provided on the side.

A second temperature sensor 22 is provided at the rice grain discharge port 21 of the grinding rice polishing machine 1, and the second temperature sensor 22 generates cold air that controls the rice grain cooling device 2 based on a detection signal from the second temperature sensor 22. It is connected to the control device 16 of the supply device 6 .

Next, the operation of this embodiment will be explained.

The rice grains placed in the container 5 of the rice grain cooling device 2 are cooled by direct contact with the cold air sent from the cold air supply device 6 through the pipe 17 and the cold air supply section 9 while passing through the cooling chamber 8. The rice grains are sent to the rice grain supply port 4 of the grinding rice mill 1 through the rice grain discharge port 3 of the container 2.

At this time, the first temperature sensor 11 between the rice grain discharge port 3 of the container 2 and the rice grain supply port 4 of the grinding rice milling machine 1
The temperature of the rice grains is detected by

Since the temperature of the rice grains increases in the rice grinding machine 1, the temperature of the rice grains rises in the rice grinding machine 1, so the standard temperature (for example, 25°C) is set so that there is no problem even if the temperature of the rice grains increases in the rice grinding machine 1.
In the following cases, rice grains are directly fed into the grinding rice mill 1 from the rice grain supply port 4 of the grinding rice mill 1.

At this time, if the temperature of the rice grains detected by the first temperature sensor 11 is higher than the predetermined reference temperature, the control device 16 sends a detection signal to
The cold air supply device 6 is appropriately controlled, and colder air is sent from the cold air supply device 6 through the pipe 17 and the cold air supply section 9 into the container 5, and while passing through the cooling chamber 8 in the container 5, the rice grains are cooled down.

Here, the cold air supply device 6 may be controlled by a conventionally well-known method such as on/off control using a thermostat.

The surface of the rice grains entering the grinding rice polishing machine 1 comes into contact with the rotating grinding rotor 18 and is gradually ground.The rice grains are removed from the holes of the porous-walled bran removing and polishing cylinder 19, and the polished rice grains are ground and polished. The rice grains are discharged to the outside of the grinding rice milling machine 1 through the rice grain discharge port 21 of the machine 1.

At this time, the second temperature sensor 22 of the rice grain discharge port 21 of the grinding rice polishing machine 1 detects the temperature of the rice grains, and if the temperature of the rice grains is below a temperature that does not interfere with normal rice milling, the rice grains are discharged as is. .

If the temperature of the rice grains is higher than that temperature, a detection signal is sent to the control device 16 of the cold air supply device 6, and as in the case of the first temperature sensor 11, the control device 1
The cold air supply device 6 is controlled by the detection signal from the cold air supply device 6, and colder air is supplied from the cold air supply device 6 to the pipe 1.
7. The rice grains that are sent into the container 5 through the cold air supply section 9 and pass through the cooling chamber 8 in the container 5 are cooled to a lower temperature.

FIG. 2 shows another embodiment of the present invention, in which a plurality of grinding rice milling machines each equipped with a rice grain cooling device are installed in the front stage of the grinding rice milling machine, and rice milling is performed a plurality of times.

As shown in FIG. 2, a first rice grain cooling device 2A is provided in the front stage of the first grinding rice polishing machine 1A, and the rice grain outlet 3A of the first rice grain cooling device 2A is connected to the first grinding rice grain cooling device 2A. The rice grain supply port of machine 1A was contacted.
The first rice grain cooling device 2A is a container 5A in which rice grains are placed.
and a first cold air supply device 6A that supplies cold air into the container 5A.

Between the rice grain outlet 3A of the first rice grain cooling device 2A and the rice grain supply port of the first grinding rice mill 1A,
A temperature sensor 11A is provided, and the first temperature sensor 11A controls the first rice grain cooling device 2A based on the detection signal from the first temperature sensor 11A.
A second temperature sensor 22A is connected to the control device 16A of the cold air supply device 6A, and a second temperature sensor 22A is provided at the rice grain outlet 21A of the first grinding rice polishing machine 1A. It is connected to the control device 16A of the first cold air supply device 6A, which controls the first rice grain cooling device 2A based on the detection signal from the sensor 22A.

In addition, in the previous process of the second grinding rice polishing machine 1B, a second
A rice grain cooling device 2B is provided, and a rice grain discharge port 3B of the second rice grain cooling device 2B is connected to a second grinding rice polishing machine 1.
The second rice grain cooling device 2B is connected to the rice grain supply port B and consists of a container 5B for storing rice grains and a second cold air supply device 6B for supplying cold air into the container 5B.

There is a first
temperature sensor 11B is provided, and the first temperature sensor 11B controls the second rice grain cooling device 2B based on the detection signal from the first temperature sensor 11B.
A second temperature sensor 22B is connected to the control device 16B of the cold air supply device 6B, and a second temperature sensor 22B is provided at the rice grain outlet 21B of the second grinding rice polishing machine 1B. It is connected to the control device 16B of the second cold air supply device 6B which controls the second rice grain cooling device 2B based on the detection signal from the sensor 22B.

The rice grain discharge port 21A of the first grinding rice mill 1A and the rice grain supply port on the upper part of the container 5B of the second rice grain cooling device 2B are connected by a grain lifting machine 24.

This embodiment is often used when the rice grains pass through a grinding rice mill multiple times, such as in brewing rice milling, and the rice grains passing through the second temperature sensor 22A of the rice grain outlet 21A of the first grinding rice mill 1A are As the next step, the rice grains are put into the container 5B of the second rice grain cooling device 2B by the grain lifting machine 24.

The reference temperature T ₁ of the second temperature sensor 22A of the rice grain outlet 21A of the first grinding rice polishing machine 1A is the same as that of the rice grain outlet 3B of the second rice grain cooling device 2B and the rice grain supply of the second grinding rice mill 1B. It is set to a certain degree higher than the reference temperature _T2 of the first temperature sensor 11B between the mouth and each temperature sensor 11A, 11B, 22.
When A, 22B sense a temperature higher than their reference temperature, each temperature sensor 11A, 11B, 22
The detection signals from A and 22B are sent to each rice grain cooling device 2.
The cooling capacity of each related cold air supply device 6A, 6B is increased by the detection signal from each control device 16A, 16B. ,
This prevents the occurrence of broken rice and a decrease in rice milling efficiency.

Effects of the Invention As described above, according to the grinding rice polishing device of the present invention, a rice grain cooling device consisting of a container for storing rice grains and a cold air supply device for supplying cold air into the container is installed in the front stage of the grinding rice polishing machine. The rice grain outlet of the rice grain cooling device is connected to the rice grain supply port of the grinding rice mill, and a temperature sensor is installed at the rice grain outlet of the grinding rice mill. By connecting to the control device of the cold air supply device that controls the device, the temperature of the rice grains at the rice grain outlet of the grinding rice milling machine is detected, and the temperature as close as possible to the rice polishing temperature inside the grinding rice milling machine is detected. Based on this temperature, the control device of the cold air supply device of the rice grain cooling device is controlled so that the rice grains can be supplied to the grinding rice milling machine so that the rice grains are always at the most suitable temperature for grinding rice milling where the rice milling temperature changes. By milling rice grains at an appropriate temperature, it is possible to more reliably prevent the occurrence of broken rice and a decrease in rice milling efficiency due to the rise in rice temperature caused by grinding and milling.

It goes without saying that the rice grain cooling device installed in the front stage of the grinding rice milling machine may be of any type, and the grinding rice milling machine may be either horizontal or vertical.

[Brief explanation of drawings]

FIG. 1 is a cutaway front view of essential parts of a grinding and rice polishing apparatus according to an embodiment of the present invention, and FIG. 2 is a schematic diagram of a grinding and rice polishing apparatus according to another embodiment of the present invention. 1... Grinding rice polishing machine, 1A... First grinding rice milling machine, 1B... Second grinding rice milling machine, 2... Rice grain cooling device, 2A... First rice grain cooling device, 2B... Second rice grain cooling device. Rice grain cooling device, 3, 3A, 3B... Rice grain discharge port, 4... Rice grain supply port, 5, 5A, 5B... Container, 6, 6A, 6B... Cold air supply device, 7... Ventilation porous wall, 8 ...Cooling room, 9...Cold air supply section, 1
0...Exhaust section, 11, 11A, 11B...First temperature sensor, 12...Air cooling section, 13...Blower, 14...Heat exchanger, 15...Compressor, 16, 16A, 16B... ...control device, 17...
...Pipe, 18... Grinding trochanter, 19... Porous wall bran removal polishing cylinder, 20... Refining room, 21, 21A, 21B...
...Rice grain outlet, 22, 22A, 22B...Second temperature sensor, 23...Resistance plate, 24...Grain frying machine.

Claims (1)

[Claims] 1 A rice grain cooling device consisting of a container for storing rice grains and a cold air supply device for supplying cold air into the container is installed in the front stage of the grinding rice milling machine, and the rice grain outlet of the rice grain cooling device is connected to the grinding rice milling machine. A temperature sensor is connected to the rice grain supply port of the grinding rice milling machine, and a temperature sensor is provided at the rice grain discharge port of the grinding rice polishing machine, and the control device of the cold air supply device is configured to control the rice grain cooling device based on a detection signal from the temperature sensor. A grinding rice polishing device characterized by contacting.