JP3043572B2 - Far-infrared grain dryer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a far-infrared grain dryer capable of rapidly obtaining high-quality dried grains by uniformly irradiating far-infrared radiation heat and hot air to circulating grains.

[0002]

2. Description of the Related Art Heretofore, far-infrared radiation heat and hot air are simultaneously applied to a grain circulating and flowing along a drying passage from a lateral direction, so that the grain can be efficiently treated in a short time without causing a body cracking phenomenon. Grain drying equipment that can be dried
Prior to the present application, they are known, for example, as described in Japanese Patent Publication No. 5-22834 and Japanese Patent Laid-Open Publication No. Hei 6-3052, respectively.

[0003]

Problems to be Solved by the Invention
In the grain drying apparatus described in Japanese Patent Application Laid-Open No. 22834 and Japanese Patent Application Laid-Open No. 6-3052, a far-infrared ray generating chamber is independently disposed below the storage chamber to emit far-infrared ray generated in the far-infrared ray generating chamber. Heat and dry hot air are radiated and ejected simultaneously across the grains flowing down the drying passageway from the storage chamber to the take-out chamber, so that the grains are dried in a short time.

[0004] Therefore, in this conventional seed drying apparatus, the grains flowing down in the drying passage under a full state are radiated by far-infrared radiation whose inner surface facing the far-infrared ray generating chamber has a higher radiant heat temperature than the outside. There is a problem that since drying is performed quickly by immersing in a lot of heat and hot air, drying unevenness is caused and it is impossible to finish dry uniformly and with good quality.

According to the present invention, a far-infrared radiator is disposed in a take-out tank for taking out grains, and far-infrared radiation is applied to the grains discharged from the delivery section in the take-out tank in a dispersed state. It is an object of the present invention to provide a far-infrared grain dryer capable of uniformly and uniformly drying heat, radiant heat, and dry hot air without causing unevenness in drying to quickly dry all grains with good quality. .

[0006]

In order to achieve the above-mentioned object, in the far-infrared grain dryer according to the present invention, the configuration of the first item is realized by adding a storage tank and an arrangement in a dryer body that is long in the front-rear direction. A plurality of rows of ventilation drying sections having a horizontal direction or a front-rear direction, a delivery section, and a delivery tank are superposed so that they can communicate with each other. And a far-infrared radiator that emits far-infrared radiation heat to the grain discharged by the method.

In the second aspect of the present invention, the base end side is provided with a reflector around the upper half of the far-infrared radiator connected to the combustion device, and provided in a ventilation drying section above the reflector. A plurality of rows of hot air chambers are provided with hot air generating chambers respectively connected to the hot air chambers, and the exhaust hot air discharged from the far-infrared radiator is sucked into the hot air generating chambers together with the outside air.

[0008]

As shown in FIGS. 1 to 3, grains are filled and stored in the storage tank, the ventilation drying section and the feeding section by the circulating dryer, and then the suction and exhaust device, the hot air generator, the feeding roll, and the unloading are carried out. As soon as the screw is started, the combustion flame of the combustion device is ejected into the far-infrared radiator.

Then, the dry hot air generated in the hot air generator by the negative pressure action of the suction and exhaust device is sucked into a plurality of rows of hot air chambers from the hot air blowing chamber, and then exhausted across the drying passage. After entering the chamber, the air is exhausted out of the main body by the suction exhaust fan through the dust exhaust air chamber.

On the other hand, the far-infrared radiant heat obtained by the far-infrared radiator and the radiant heat reflected by the reflected heat are both radiated into the take-out tank and simultaneously jetted directly from the far-infrared radiator into the take-out tank. Combustion hot air is mixed with the outside air sucked through the intake window into the extraction tank, becomes dry hot air at an appropriate temperature, circulates in the extraction tank, and is sucked into the hot air generating chamber through the gap around the reflector. After being mixed with the dry hot air generated in the hot air generating chamber, the air is sucked into a plurality of rows of hot air chambers, then enters a plurality of rows of exhaust air chambers through a drying passage, and further passes through a dust air chamber. Performs a distribution function that is exhausted outside.

In this state, if the grains are taken out from the feeding section and sequentially discharged into the tank in this state, the grains flowing down from the storage tank along the ventilation and drying section due to the discharge operation are arranged in a horizontal direction. In the drying section, it is quickly dried by bathing in a large amount of dry hot air while being divided in the front-rear direction, and when flowing down the delivery section, it successively disperses into the take-out tank while flowing in a so-called cross-flow state where the flow changes in the left and right direction. It is discharged while exhibiting a granular state.

By the way, since far-infrared radiation heat, radiant heat and dry hot air are radiated and ejected in the take-out tank, all of the grains in the dispersed state are uniformly exposed to far-infrared radiation heat, radiant heat and dry hot air. Drying uniformly without drying unevenness.

Therefore, if the drying operation as described above is repeated a plurality of times, uniformly dried high-quality dried grains can be obtained in a short time.

[0014]

An embodiment will be described with reference to the drawings.

1 to 3, reference numeral 1 denotes a dryer main body having a horizontally long rectangular tube shape that is long in the front-rear direction. Hot air blowing chamber 2 and dust blowing chamber 3 of similar shape with increased length
And are arranged symmetrically.

At a position above the space between the hot air blowing chamber 2 and the dust exhausting chamber 3, one end is connected to the hot air blowing chamber 2 via the blowing window 5 in a direction orthogonal to the horizontal direction. The hot air chamber 4 composed of a plurality of stoppers and the exhaust chamber 6 composed of a plurality of stoppers connected on one side through the exhaust air chamber 3 and the exhaust air chamber 7 are combined with the hot air chamber 4 and the exhaust air chamber 6. A ventilation drying section 10 is formed by being alternately provided so as to form a drying passage 8 therebetween, and the upper end of the ventilation drying section 10 is connected to the storage tank 9, and the lower end thereof is connected to the hot air chamber 4 and the exhaust air. A mountain-shaped partition wall 12 disposed in a plurality of rows along the horizontal direction just below the chamber 6
Is connected to the feeding portion 11 formed by the above.

The hot air chamber 4 and the exhaust air chamber 6 are connected to a drying passage 8.
Are formed as ventilating surfaces, the lower portions are opened, and the inside of the hot air chamber 4 and the inside of the exhaust air chamber 6 are connected to the feeding portion 11. Therefore, as described above, the hot air chamber 4 By opening the lower portion of the exhaust chamber 6, even if some of the dust mixed in the grains flowing down the drying passage 8 enters the hot air chamber 6 from the ventilation surface, the dust and the like are removed from the hot air chamber 4. In addition, without being deposited on the bottom of the exhaust chamber 6, it is allowed to smoothly flow down to the lower feeding section 11, thereby preventing a fire accident of the grain dryer by igniting and burning the accumulated dust and the like.

In addition, since the feeding portion 11 is formed by a plurality of chevron partitions 12 immediately below the hot air chamber 4 and the exhaust air chamber 6, the flow of the grain divided in the front-back direction in the drying passage 8 is dried. After passing through the passage 8, the flow will be deflected in the left-right direction and cross-flowed in the future, and the grains having different initial moisture contents will be efficiently stirred and mixed, and at the same time, the fluidity of the grains will be improved. Uniform drying can be achieved without flowing down unevenness. A feeding port 13 is opened in each valley of the chevron partition wall 12 along the horizontal direction, and a feeding roll 14 that is intermittently rotated is rotatably mounted at the position of the feeding port 13.

The lower part of the feeding part 11 formed as described above is surrounded by a hot air blowing chamber 2, a dust exhausting chamber 3, and a feeding part 1.
1 and a take-out tank 15 surrounded by the front and rear wall plates of the dryer main body 1, and a hot-air blowing chamber 2 and a dust-blowing chamber 3.
A discharge gutter 16 is provided along the horizontal direction during the lower interval of
This takes out the discharge gutter 16 and connects it to the extraction tank 15. A discharge screw 17 is rotatably mounted on the inside of the discharge gutter 16, and one end of the discharge gutter 16 is connected to a lower part of a circulation lift 18 provided on one side of the dryer body 1. The upper part of the circulation elevator 18 is connected to the starting end of a carry-in gutter 19 provided horizontally along the top of the dryer main body 1 in the horizontal direction.

On the front side of the hot-air blower chamber 2 and on the rear side of the dust-exhaust air chamber 3, a hot-air generator 20 containing a burner 21 is provided.
And a suction air exhaust device 22 in which a suction air exhaust device 23 is rotatably stored, respectively, and the hot air generator 20 and the hot air blowing chamber 2 are provided.
And the hot air generator 20 and the suction air exhaust device 22 are exchangeable so that the device positions can be freely exchanged back and forth, and the exhaust air direction of the exhaust air is directed to the work place. It is configured so that it can be selected on the front side or the rear side with respect to the dryer main body 1 according to the installation conditions.

Reference numeral 24 denotes a hollow far-infrared radiator disposed substantially in the center of the take-out tank 15 along the front-rear direction. The discharge side is connected to the discharge tank 15 through the bent flame tube 26.
The opening is connected to an open-ended suction cylinder 27 inserted from one side, and the combustion hot air spouted from the curved flame tube 26 and the intake outside air are agitated and mixed, and the dry hot air is circulated in the extraction tank 15.

The periphery of the upper half of the far-infrared radiator 24, which is obtained by spraying alumina, titania or ceramic on a stainless steel pipe, is covered with a reflecting plate 28 whose lower part is opened at an appropriate interval so as to be connected to the extraction tank 15. Further, between the reflection plate 28 and the chevron-shaped partition wall 12 constituting the feeding portion 11, a hot air generating chamber 29 having an intake window 30 on one side is formed.
9 are communicated with a plurality of hot air chambers 4 whose lower ends are opened through a communication port 31 opened at the top of the mountain-shaped partition wall 12. Fifteen
And the dried hot air generated in the hot air generating chamber 29 is transferred to the hot air chamber 4.
···· Inhale into the inside, and let the ventilation drying unit 10 be bathed in the vertically flowing grain and dried by ventilation.

[0023]

Since the present invention is configured as described above, it has the following effects.

According to the first aspect of the present invention, far-infrared radiant heat and radiant heat are uniformly applied to one grain of the grain discharged in a dispersing state from the feeding portion into the take-out tank, and the grain temperature is increased. As a result, the cereals can be dried uniformly, without causing unevenness in water content, and the dried cereals can be efficiently obtained in a short time.

According to the second aspect of the present invention, since far-infrared radiation heat, radiant heat and dry hot air can be radiated and circulated into the discharge tank, the particles are discharged into the discharge tank in a dispersed state. Is it possible to dry the grain in a short time while raising the grain temperature, or suck the dry hot air generated in the extraction tank together with the dry hot air in the hot air generating chamber into multiple hot air chambers, Grains flowing down the part can be quickly dried by a large amount of dry hot air.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of a far-infrared grain dryer according to the present invention.

FIG. 2 is a side view in which a part of a main part is cut away.

FIG. 3 is a partially cut-away side sectional view of a far-infrared radiator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Dryer main body 4 Hot air chamber 9 Storage tank 10 Ventilation drying part 11 Feeding part 15 Extraction tank 24 Far infrared radiator 25 Combustion device 27 Intake window 28 Reflector 29 Hot air generator

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Masaru Kashiwazaki 1-40-2 Nisshincho, Omiya City, Saitama Prefecture Examiner, Katsuhiko Kubo, National Institute for Biological Sciences (56) References JP-A-8- 14746 (JP, A) JP-A-62-141486 (JP, A) JP-A-5-100401 (JP, A) JP-A-6-3052 (JP, A) Japanese Utility Model Publication No. 64-41087 (JP, U) JP-A-4-125186 (JP, U) JP-A 5-22037 (JP, U) JP-B 5-22834 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) F26B 17/14 F26B 3/30 F26B 23/04

Claims (2)

(57) [Claims] 1. A storage tank and a plurality of rows of ventilation drying units, delivery units, and extraction tanks arranged in the left-right direction or the front-rear direction are superposed in a dryer body that is long in the front-rear direction so that they can communicate with each other. Wherein the far-infrared radiator, which radiates far-infrared radiation heat to the grains discharged in a dispersing state from the unwinding section into the take-out tank, is provided in the take-out tank. Grain dryer. 2. A base plate having an upper half portion of a far-infrared radiator connected to a combustion device and covered with a reflector, and connected to a plurality of rows of hot air chambers provided in a ventilation drying section above the reflector. 2. The far-infrared grain dryer according to claim 1, further comprising a hot-air generating chamber, wherein the exhausted hot air discharged from the far-infrared radiator is sucked into the hot-air generating chamber together with the intake outside air.