JP3332789B2 - Grain far-infrared 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 ray drying apparatus for radiating and drying far-infrared rays while circulating and flowing grains in a machine.

[0002]

2. Description of the Related Art In order to dry grains, a circulating grain drying apparatus which sends drying air while drying the grains while circulating and flowing the grains in the machine is provided with a far-infrared ray generator and emits far-infrared rays to the grains. There is known a grain far-infrared dryer that dries and dries (for example, Japanese Patent Publication No. 5-22834).

In this type of grain far-infrared drying apparatus, a ventilation path and an exhaust path are formed by a gas-permeable partition wall. Has become. The air guide path is connected to the burner, and the exhaust path is connected to the suction exhaust fan. Further, a far-infrared ray generator is arranged in the air duct, and is connected to the burner.

[0004] When drying cereals, drying air is sent from a draft channel to a cereal logistics lower passage, and the cereals are dried by being subjected to drying air and far-infrared rays while flowing down the cereal logistics lower passage. Is a configuration that is discharged from the exhaust path.

In the grain far-infrared ray drying apparatus disclosed in the above publication, the far-infrared ray generator is disposed in the air guide path as described above. The mouth is provided at a position close to a substantially central portion of the outside air introduction port of the air guide path, in a direction along the introduction direction of the outside air from the outside air introduction port (a direction toward the inside of the air guide path) or downward. I was

For this reason, the exhaust gas (hot air) discharged from the distal exhaust port of the far-infrared radiator (flame cylinder) tends to flow only in the opening direction of the distal exhaust port (ie, inside the air guide path), There is a drawback that the mixing with the outside air introduced from the outside air introduction port is locally performed at a biased portion in the air guide passage. If the mixing of the exhaust air (hot air) emitted from the exhaust port of the far-infrared radiator and the outside air introduced from the outside air introduction port is locally performed in a biased portion, the mixing is performed over the entire area in the air guide path. As a result, hot air (dry air) having a uniform temperature is not generated, and as a result, the grains dried in the grain distribution lower passage are not uniformly dried. In particular, in the vicinity of the outside air inlet of the air duct, the exhaust air (hot air) emitted from the exhaust port of the far-infrared radiator (flame cylinder) is not mixed at all. Is difficult to supply a moderate amount of warm air, resulting in so-called spot dryness.

As described above, the conventional grain far-infrared drying apparatus provided with the far-infrared ray generator has room for improvement in generating uniform hot air (dry air).

[0008]

SUMMARY OF THE INVENTION In consideration of the above facts, the present invention can generate hot air (dry air) having a uniform temperature over the entire area of an air guide path to uniformly dry grains. The purpose is to obtain a grain far infrared drying device.

[0009]

According to the present invention, there is provided a far-infrared grain drying apparatus according to the present invention, comprising: An air introduction port is provided, through which outside air is introduced from the outside of the machine, and an air guide path communicated with the drying air generation means, and exhaust air provided on the other side of the grain distribution lower path and communicated with the air exhaust means. And a far-infrared radiator that is disposed in the air guide path and is connected to the drying air generation means, and emits far-infrared rays, and sends dry air from the air guide path to the grain distribution lower path. In the grain far-infrared drying device that discharges from the exhaust path after being supplied, the exhaust port of the far-infrared radiator is located at a position close to a substantially central portion of the external air inlet of the air guide path, and the external air inlet is provided. In the direction opposite to the direction of outside air Was, it is characterized in that.

In the grain drying apparatus having the above-described structure, the drying air generated by the drying air generating means is sucked by the air discharging means, is sent from the air guiding path to the grain distribution lower path, and is discharged from the discharging air path. At the same time, far-infrared rays from the far-infrared radiator are radiated to the grain distribution lower road. The cereal is dried by being subjected to a drying wind and far-infrared rays while flowing down a cereal distribution route.

Here, the far-infrared radiator disposed in the air guide path has an exhaust port located at a position substantially close to the center of the external air inlet port of the air guide path, and has a function of introducing outside air from the external air inlet port. The exhaust (hot air) discharged from this exhaust port is arranged in the direction opposite to the direction (that is, the outside air introduction port), so that the outside air flowing from the outside air introduction port into the air guide passage and the outside air introduction port The air is well mixed in the vicinity, and hot air (dry air) having a uniform temperature is generated over the entire area in the air guide path. Therefore,
Dry air having a uniform temperature is uniformly supplied from the air guide passage to the grain distribution lower passage, and the grains dried in the grain distribution lower passage are uniformly dried.

As described above, the grain far-infrared ray drying device according to the present invention can generate warm air (dry air) having a uniform temperature over the entire area of the air guide path and uniformly dry the grain. .

[0013]

FIG. 1 is a longitudinal sectional view of a grain far-infrared drying apparatus 10 according to the present invention, and FIG. 2 is a longitudinal sectional view taken along line 2-2 of FIG. Have been. Also,
FIG. 3 is a cross-sectional view taken along line 3-3 in FIG.

The body 12 has a pair of left and right side walls 14 and a front wall 1.
6. The outer frame of the grain far-infrared ray drying device 10 constituted by the rear wall 18, the ceiling wall 20, and the bottom wall 22, and has a box shape that is vertically high and long.

The upper internal cavity of the body 12 is a grain tank 24. A drying section 26 is provided below. In the drying section 26, a pair of air-permeable exhaust path partition walls 28 that descend from the inner surface of the left and right machine walls 14 at a substantially central portion in the vertical direction toward the central portion in the horizontal direction are funnel-shaped in a front view (FIG. 2). And is bridged in the longitudinal direction of the fuselage (between the front wall 16 and the rear wall 18). This exhaust passage partition wall 28 and side wall 1
An exhaust path 32 is formed between the air outlet 4 and the air outlet 4.

A pair of air-permeable air-guiding wall partitions 34 parallel to the air-path partition wall 28, that is, inclined with respect to the side walls 14, are provided on the inner side of the air-path partition wall 28. Is suspended in the front-rear direction of the body 12. Wind guide bulkhead 3
The upper part of 4 is bent toward the inside of the machine, and the upper ends are continuously connected to each other. For this reason, a portion surrounded by the opposed air guide path partition walls 34 is a rhombus-shaped air guide path 38 in a front view.

Between the upper part of the exhaust path partition 28 and the upper part of the air guide path partition 34, similarly to the air guide path 38, a permeable partition 40 having a diamond shape in a front view is arranged. The air guide path 42 is configured.

The space between the wind guide path 38 and the auxiliary wind guide path 42, the distance between the auxiliary wind guide path 42 and the exhaust wind path 32, and the space between the air guide path 38 and the exhaust wind path 32 are within the grain tank 24. A grain distribution lower route 46 through which grains flow down is provided.

One end of the exhaust passage partition wall 28 and one end of the air guide passage partition wall 34 are connected to the front wall 16 as shown in FIG. On the front wall 16, an outside air inlet 30 is formed, a wind guide duct 36 is attached, and a wind guide passage 64 communicating with the wind guide path 38 is provided. This air duct 36
The lower end is opened, and a slit-shaped air inflow hole 44 is formed in the front surface so that outside air can flow in. For this reason, the outside air is configured to be sent from the outside air introduction port 30 to the wind guide passage 38 through the wind guide passage 64.

A burner 66 as drying air generating means is provided inside the air duct 36 (at the lower end of the air passage 64). The burner 66 is arranged with its combustion tube 74 protruding into the air guide passage 38, and its main body is covered with a windproof cover 76. The windproof cover 76 has an open lower part, and faces the lower end opening of the air guide duct 36. Thereby, the air guide duct 3
Numeral 6 blocks air from flowing into the burner 66 from the air inlet 44 and supplies air to the burner 66 from the lower end opening of the air duct 36.

A far-infrared radiator 78 is arranged in the air guide path 38. The far-infrared radiator 78 is formed in a cylindrical shape and bent as a whole in a U-shape.
And is connected to the main body of the burner 66. Further, the other end of the far-infrared radiator 78 is open and serves as an exhaust port 80. The exhaust port 80 is connected to the front wall 1
6 is arranged at a position close to a substantially central portion of the outside air inlet 30 and in a direction opposite to the outside air introduction direction from the outside air inlet 30 (that is, toward the outside air inlet 30). ing. Thus, the hot air generated by the burner 66 is discharged from the exhaust port 80 into the air guide passage 38 while heating the far-infrared radiator 78.

On the other hand, the exhaust path partition wall 28 and the air guide path partition 34
Is connected to the rear wall 18 so that the wind guide path 38 and the grain distribution lower path 46 are shielded at the rear end of the fuselage. Therefore, the drying air sent to the air guide passage 38 is sent to the grain distribution lower passage 46 and then discharged to the exhaust air passage 32. At this time, the grains in the grain distribution lower passage 46 are dried by flowing down below the grain distribution lower passage 46 while receiving the drying wind sent from the air guide passage 38.

As shown in FIG. 3, an opening 84 is formed in the rear wall 18 corresponding to the exhaust passage 32, and the exhaust duct 8
6 is attached, and the exhaust path 3 is
An exhaust air communication passage 68 communicating with the second air passage 2 is formed.

At the center of the exhaust passage 68, a suction exhaust 70 is provided as an exhaust means. Therefore, when the suction exhaust fan 70 is operated, the drying air generated by the burner 66 is sent from the air guide passage 38 to the exhaust air passage 32, and is discharged to the outside of the machine body 12 through the exhaust air communication passage 68. is there.

Each lower end of the grain distribution lower passage 46 is connected to a shutter drum 50 via an outlet 48 formed between the lower end inclined portion of the exhaust passage partition 28 and the lower end of the air guide passage partition 34.

The shutter drum 50 has a hollow cylindrical shape whose axis is horizontal, and a slit-shaped notch having a predetermined width and extending along the axial direction is formed in a part of the outer periphery. The shutter drum 50 is rotated about the axis, and the notch and the outlet 48 are rotated.
Face through the notch, through the notch 46
The grains inside the shutter drum 50 flow into the inside of the shutter drum 50, and the shutter grains 50 are further rotated so that the cutouts are positioned downward, whereby the grain that has flowed in is discharged.

Below the shutter drum 50, the machine wall 14 is provided.
A pair of sinking flow plates 52 tapered downward toward a central portion therebetween is disposed. In addition, a setting hopper 53 is provided at a lower portion of the machine wall 14 so that grains can be set in the machine body 12. For this reason, the grains discharged from the shutter drum 50 and the grains loaded from the loading hopper 53 are conveyed to a substantially central portion between the machine walls 14 by the loading flow plate 52.

A lower screw conveyor 54 for conveying grains is provided at each lower end of the sinking plate 52. The lower screw conveyor 54 is arranged in the longitudinal direction of the grain far-infrared drying device 10 so as to send out the grain entering between the outer spiral blades to the front wall 16 side.

An elevator 56 is provided outside the front wall 16 so as to receive the grain conveyed by being connected to the lower screw conveyor 54. In the elevator 56, a grain transport bucket 57 is attached to the endless belt at regular intervals, and the grain delivered from the lower screw conveyor 54 and deposited at the lower end is lifted and transported to the top of the grain far-infrared drying device 10. I can do it.

One end of an upper screw conveyor 58 corresponds to the upper end of the elevator 56, and can receive the grain transported by lifting. Screw conveyor 5
The other end of 8 extends to the longitudinal center of the grain far-infrared dryer 10, and a rotary equalizer 60 having a vertical axis is disposed immediately below the other end of the upper screw conveyor 58. Therefore, the grain conveyed by the upper screw conveyor 58 to the upper central part of the grain far-infrared drying device 10 falls onto the rotary equalizer 60, and the rotary equalizer 6
When the rotation is zero, the centrifugal force causes the particles to be evenly distributed and distributed to the grain tank 24 in the body 12.

A grain outlet 72 is provided below one end of the upper screw conveyor 58 so that the grain after the drying process can be taken out of the machine body 12.

Next, the grain far-infrared drying apparatus 10 having the above-described structure is used.
The operation of will be described. Circulation system (lower screw conveyor 54, elevator 56, upper screw conveyor 58, rotary equator 6)
0) is driven. Then, the stuffing hopper 53 on the lower side of the grain far-infrared ray drying device 10 is opened, and
2 The loaded grain is guided by the loading sink 52 and transported to the position where the lower screw conveyor 54 is provided. The transported grain is sequentially transported to the elevator 56 side by the lower screw conveyor 54, and further scooped up and transported by the bucket 57 of the rotating elevator 56.

The grain lifted and conveyed above the machine body 12 by the elevator 56 is sent to the upper central portion of the machine body 12 by the upper screw conveyor 58, and stored in the grain tank 24 in the machine body by the rotary equalizer 60.

Further, here, after completion of the setting, the shutter drum 50 is rotated to feed out the grain. With this,
When the burner 66 connected to the machine body 12 is ignited and the suction exhaust fan 70 is driven, outside air is sent from the outside air inlet 30 to the air guide passage 38 through the wind guide passage 64.

The outside air sent into the air guide passage 38 is heated by the far-infrared radiator 78 heated by the burner 66 and is heated by the burner 66 and discharged from the exhaust port 80 of the far-infrared radiator 78. And dry air (warm air) at a predetermined temperature is generated. The drying air generated in the air guide path 38 is supplied to the air guide path partition 34.
And is supplied directly to the cereals in the cereal logistics lower passage 46.
The drying air after absorbing the moisture of the grain passes through the exhaust air path partition 28, reaches the exhaust air communication path 68 via the exhaust air path 32, and is discharged out of the grain far-infrared ray drying device 10. A part of the drying air sent into the air guide passage 38 passes through the air guide passage partition 34 and is supplied to the grains in the grain distribution lower passage 46 to absorb the moisture of the grains, and then passes through the partition 40. It reaches the auxiliary wind guideway 42,
The air is discharged from the air discharge passage 68.

At the same time, far-infrared rays are radiated from the far-infrared radiator 78 in the air guide path 38 to the grain distribution lower path 46. Therefore, the cereal is dried under the drying air and far-infrared rays while flowing down the cereal distribution channel 46.

On the other hand, the grains in the grain distribution lower passage 46 pass through the outlet 48 due to the rotation of the shutter drum 50 and are guided and conveyed again by the filling plate 52. The transported cereal is used for airframe 1 until the desired moisture content is reached.
The above-described circulation action is repeated in 2, and is lifted and conveyed again by the elevator 56, and then taken out from the grain discharge port 72.

Here, the far-infrared radiator 78 disposed in the air guide passage 38 has an exhaust port 80 at a position close to a substantially central portion of the outside air inlet 30 of the air guide passage 38 and the outside air introduction port. The direction facing the outside air introduction direction from the port 30 (ie,
The exhaust (hot air) discharged from the exhaust port 80 is arranged toward the outside air inlet 30).
The hot air (dry wind) is uniformly mixed with the outside air flowing into the air guide passage 38 from the outside and near the outside air inlet 30, and has a uniform temperature over the entire area of the air guide passage 38. Therefore, drying air having a uniform temperature is uniformly supplied from the air guide passage 38 to the grain distribution lower passage 46, and the grains dried in the grain distribution lower passage 46 are uniformly dried.

As described above, in the grain far-infrared ray drying apparatus 10, warm air (dry air) having a uniform temperature can be generated over the entire area in the air guide path 38 to uniformly dry the grain.

[0040]

As described above, the grain far-infrared ray drying apparatus according to the present invention generates warm air (dry air) having a uniform temperature over the entire area of the air guide path to uniformly dry the grain. It has an excellent effect that it can be produced.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a grain far-infrared ray drying device according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the grain far-infrared ray drying device taken along line 2-2 of FIG.

FIG. 3 is a cross-sectional view of the grain far-infrared ray drying apparatus taken along line 3-3 in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Grain far-infrared drying apparatus 12 Airframe 28 Exhaust path bulkhead 30 External air inlet 32 Exhaust path 34 Air guide path partition 38 Air guide path 46 Grain distribution lower path 64 Air guide communication path 66 Burner (dry air generation means) 70 Suction exhaust fan (Exhaust air means) 78 Far-infrared radiator 80 Exhaust port

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuyuki Hidaka 1-40-2 Nisshin-cho, Omiya-shi, Saitama In-house Research Institute for Specified Industrial Technology (72) Inventor Tomohiko Ichikawa 1 Nisshin-cho, Omiya-shi, Saitama 40-chome-2 Biotechnology-Specific Industrial Technology Research Promotion Organization (72) Inventor Nobuhiko Onuma 404 Oinomori Mori, Tendo City, Yamagata Pref.Yamamoto Seisakusho Co., Ltd. (72) Inventor Hiroyuki Tashiro 4-1, Yamana-cho, Fukuroi-shi, Shizuoka Prefecture Inside Shizuoka Machinery Co., Ltd. (72) Inventor Koji Okumura 2-30 Saijo Nishihoncho, Higashi-Hiroshima City, Hiroshima Prefecture Satake Co., Ltd. In-house (72) Inventor Katsushi Sugimoto 2-30 Saijo Nishihonmachi, Higashihiroshima City, Hiroshima Prefecture Examiner, Satake Manufacturing Co., Ltd.Takeshi Shinkai (56) Reference JP-A-9-61055 (JP, A) JP-A-8-14745 (JP, A) JP-A-6-3052 (JP, A) JP-B 5-22834 (JP, B2) (58) Fields investigated (Int.Cl. ⁷ , DB name) F26B 3 / 30,9 / 06,17 / 14 F26B 23 / 02,23 / 04

Claims (1)

(57) [Claims] 1. A cereal distribution lower passage, which is constituted by air-permeable partition walls arranged opposite to each other, through which cereal flows, and an outside air inlet provided on one side of the cereal distribution lower passage, through which outside air is introduced from outside the machine, is formed. A wind guide path communicated with the drying air generating means, and an exhaust path provided on the other side of the grain distribution lower path and communicated with the air discharging means. A far-infrared radiator that is connected to the wind generation means and emits far-infrared rays, comprising: a grain far-infrared ray drying device that sends dry air from the air guide path to the grain distribution lower path and then discharges the same from the exhaust air path. In the exhaust port of the far-infrared radiator, at a position close to the approximate center of the outside air introduction port of the air guide path, and arranged in a direction facing the outside air introduction direction from the outside air introduction port, A far-infrared dryer for grain.