JPS6336293B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to improvements in grain conditioning equipment.

Generally, it is said that the standard moisture content of polished rice is an important factor in the taste of cooked rice, and the moisture content is, for example, about 14.5 to 15%. However, in the past, rice has been over-dried to a level of 1 to 1.5% to ensure safety against inspection failures during the paddy drying process. And regular brown rice for milling is
Most rice has a moisture content of 13 to 14.5%, and the moisture content of polished rice is
It is normal for it to decrease by about 0.6 to 0.8%. Therefore, the polished rice is humidified to a standard moisture content that is good in taste, and a mist of an aqueous solution containing food additives is passed through the polished rice to simultaneously have a humidifying effect and an absorbing effect of the additives. However, the temperature of the polished rice immediately after coming out of the rice milling machine is approximately 35°C to 38°C, and the polished rice is fed to the conditioning chamber of the grain conditioning device and heated with room temperature humid air. When humidified, the temperature of the moist air increases as it passes through the milled rice, causing dew condensation on the inner surface of the surrounding wall that is in direct contact with the outside temperature of the conditioning chamber, and the milled rice flowing down the inner surface of the surrounding wall It has the disadvantage that the starch layer rapidly expands when it absorbs dew condensation water, causing cracks on the grain surface (split grains, crushed grains, etc.), which significantly reduces the quality of polished rice.

Therefore, in view of the above-mentioned points, the present invention provides a tempering chamber having a grain supply port in the upper part and a grain outlet in the lower part, by forming the circumferential wall of the tempering chamber into a double-walled structure to reduce the space. The air passage is divided into an air supply room and an air exhaust room, and the air supply room is connected to an air conditioning device, and the air exhaust room is returned to the air conditioning device. By communicating through the air passage, the surrounding wall of the double wall structure of the conditioning chamber is filled with hot and humid air above room temperature, and the inner wall surface is kept warm to prevent the above-mentioned condensation water. The purpose of the present invention is to develop and provide an apparatus that achieves effective use of the exhaust energy and reliably mass-produces high-quality polished rice with a standard moisture content without grain surface cracks (split grains).

The present invention will be explained with reference to embodiment figures. In FIGS. 1 to 3, the cross-sectional area is A large number of shaped air supply vein umbrellas 6 and wind exhaust vein umbrellas 7 are hung horizontally in parallel between the inner walls on both sides, and the air supply vein umbrella 6 is provided with a large number of through holes 8 on one side wall thereof. With,
The other end is closed to form a ventilation path for damp air, and the ventilation striped umbrella 7 has a large number of ventilation holes 9 on the other side wall, and the other end is closed to form a ventilation path for damp air. None, each can be mixed and arranged as appropriate. The double-walled space of the peripheral wall 2 of the tempering chamber 1 is formed into a ventilation air passage 10, and one side of the air passage 10 is connected to a ventilation chamber 10 by partition walls 13, 13.
In addition, the three sides are divided into ventilation chambers 12, and the ventilation chamber 11 has ventilation holes 8 on the ventilation side, and the ventilation chamber 12 has ventilation holes 9 on the ventilation side. The air supply chamber 11 is connected to an air conditioning device 15 equipped with a sprayer, a warmer, etc. through a duct 14.
The ventilation chamber 12 is connected to the ventilation opening 17 of the blower 16 through the ventilation opening 17 provided at the lower part of the ventilation chamber 12.
8 is connected to the air supply port 20 of the blower 16 through a return air path 19 to integrally form a circulating air path. In addition, a mixing control valve 2 is provided in the return air passage 19.
1, and an exhaust valve 22 and an air intake valve 28 are respectively provided in the branch pipes thereof, and a water tank 24 for conditioning water is connected to the air conditioning device 15 by a water pipe 26 with a pump 25 interposed therebetween. There is. In this way, a humidifying section 27 including the vein umbrellas 6..., 7... is formed in the tempering chamber 1, and a chamber 28 is provided below the humidifying section 27, and a discharge port 29 is provided at the bottom of the humidifying section 27.
... have rotor wheel discharge valves 30A, 30B, 30C.
is hung horizontally parallel to the striated umbrellas 6 and 7, and the outlet 29...
The grains flowing down are supplied to the grain supply port 33 of the tempering chamber 1 by a grain lifting machine 32 via a screw conveyor 31. A scattering machine 34 is installed in the upper chamber 5 of the tempering chamber 1.
is provided to collect grains flowing down from the grain supply port 33 into chamber 1.
It is formed so that it flows uniformly into the inside.

With the above-described configuration, raw polished rice is supplied to the supply hopper, and the grain frying machine 32 is rotated to supply it into the tempering chamber 1, and a grain layer is provided above the humidifying section 27 to serve as a canopy to prevent air leakage. It is stored to the position shown in the figure so as to form a . Next, a water tank 24 in which tempered water was stored.
When the driving part of the device is started together with the pump 25, the tempered water in the water tank 24 becomes a mist of ultrafine particles in the air conditioning device 15, and becomes moist air by the wind force flowing in from the blower 16. It is supplied to the air supply chamber 11 of the conditioning chamber 1. The mist-like humid air of ultrafine particles in the air supply chamber 11 is passed from the air supply vein umbrella 6 to the wind exhaust vein umbrella 7.
... and is discharged to the ventilation chamber 12, during which time the polished rice in the grain layer in the humidifying section 27 is humidified almost uniformly and in an even amount by the hot and humid air, and the polished rice is For white rice, use the discharge valves 30A and 30 at the bottom.
Due to the rotation of rotary impellers B and 30C, the grain is sequentially discharged to the lower flow tank, and the screw conveyor 31,
The polished rice is returned to the upper chamber 5 via the grain frying machine 32, the grain supply port 33, and the scatterer 34, and is circulated through the flow process a predetermined number of times to be tempered to a predetermined moisture content, and then the polished rice is discharged outside the machine. Ru.

In the peripheral wall 2 of the conditioning chamber 1, a space with a double wall structure is formed into an air supply chamber 11 and an air exhaust chamber 12, and the room temperature warm and humid air generated in the air conditioning device 15, or Since the discharged air is filled with the heat and kept warm, no condensation water is formed on the inner surface of the inner wall 3 of the peripheral wall 2 due to the warm and humid air from the humidifying section 27, so that the polished rice flowing down the inner wall 3 is not heated. The occurrence of split grains, broken grains, etc. due to adsorption of condensed water can be completely prevented.
Furthermore, since the exhaust air circulates in the circulation air path, leakage of exhaust air to the outside of the machine is prevented, and the exhaust air energy can be used effectively.

4 and 5 show another embodiment of the present invention, in which several rows of grain flow passages 35 having porous walls on both sides are arranged in series at appropriate intervals inside the tempering chamber 1A. The air supply passages 36 and the exhaust air passages 37 are arranged alternately on both sides of the flow passages 35, and each air supply passage 36 is placed in the air supply chamber 11A within the peripheral wall 2A having a double wall structure. Since this is a grain tempering device that connects each air exhaust passage 37 to each of the air exhaust chambers 12A in the peripheral wall 2A and has a return air path, the air supply chamber 11A and the exhaust air chamber 12A in the peripheral wall 2A are It is filled with warm and humid air at room temperature or its exhaust air, and the inner wall 3A is always kept warm and no condensation water is generated, so it is possible to completely prevent grain splitting, crushing, etc. due to adsorption of condensed water as described above. It has the following effects.

[Brief explanation of the drawing]

The drawings are illustrations of embodiments of the present invention. Fig. 1 is a partially cut-away side view of this device, Fig. 2 is a front sectional view thereof, Fig. 3 is a plan sectional view thereof, Fig. 4 is a partially cut-away side view of another embodiment, and Fig. 5 is a front sectional view thereof. 1, 1A... Temperature chamber, 2, 2A... Peripheral wall, 3,
3A...Inner wall, 4...Outer wall, 5...Upper chamber,
6...Striated umbrella for air supply, 7...Striated umbrella for wind exhaust, 8...
...Through hole, 9...Through hole, 10...Ventilation air path, 1
1, 11A... Air supply room, 12, 12A... Air exhaust room, 13... Farm wall, 14... Duct, 15... Air conditioner, 16... Air blower, 17... Air outlet,
18...Exhaust port, 19...Return air path, 20...
Air supply port, 21... Mixing control valve, 22... Exhaust valve, 23... Air intake valve, 24... Water tank, 25...
...Pump, 26...Water pipe, 27...Humidifying section, 28
...Chamber, 29...Exhaust port, 30A, 30B, 30
C...Discharge valve, 31...Screw conveyor, 3
2...Grain lifting machine, 33...Grain supply port, 34...Scatterer, 35...Grain flow path, 36...Air supply path, 3
7...Exhaust duct.

Claims (1)

[Claims] 1. In a tempering chamber equipped with a grain supply port at the top and a grain discharge port at the bottom, the peripheral wall of the tempering chamber is formed into a double wall structure consisting of an inner wall and an outer wall. A grain conditioning device characterized in that the space is used as a ventilation air path, the air path is divided into an air supply chamber and an air exhaust chamber, and the air supply chamber is connected to an air conditioning device. . 2. The grain conditioning device according to claim 1, wherein the exhaust chamber is connected to the air conditioning device through a return air path.