JP2002048474A - Grain drier - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate incorporation into a small-sized grain drier without the need for providing a hot air path with a large capacity and allow grain to be dried by effectively using energy by far infrared rays so as to enhance energy-saving effects. SOLUTION: The inside of a drier main body is provided with the upper-stage storage part, the middle-stage drying part and the lower-stage grain collecting part, and the inside of the drying part is provided with two grain flow paths that are partitioned by a ventilating member to provide communication between the storage part and the grain collecting part. A hot air path is provided between two grain flow paths, and there is provided a partitioning member partitioning the inside of the storage part in the tip side of the hot air path. The front side of the drier main body of the drying part is provided with a burner, and the rear side of the drier main body is provided with an exhauster. There is provided a combustion chamber part forming a tubular combustion chamber communicating with the burner and opening into the direction from the front side of the drier main body to the rear side of the drier main body, and the outer periphery location in the open side of the combustion chamber part is provided with a far infrared radiator extending from the front side of the drier main body to the rear side of the drier main body in the hot air path. The far infrared radiator is additionally provided with a return pipe function returning the hot air supplied from the front side of the drier main body to the rear side of the drier main body to the front side of the drier main body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain dryer, and more particularly, to reducing the size of the dryer itself, increasing the far-infrared radiation area, increasing the energy saving effect, and reducing combustion noise. It relates to a grain dryer that can be reduced.

[0002]

2. Description of the Related Art Grain dryers for drying grains such as rice and wheat are used for drying grains such as rice and barley in a paddy state before milling, and there are circulation type and flat type grain dryers. .

The circulation type grain dryer is provided with a storage section into which the grains are sequentially fed from the top, a drying section for drying the grains, and a grain collecting section for collecting the dried grains in the body of the dryer. After being guided from the storage section to the lower section through the middle drying section to the lower collection section, the grain is dried by hot air or far infrared rays in the drying section while being returned to the upper storage section and circulated.

[0004] Such a grain dryer is disclosed in Japanese Unexamined Patent Publication No.
There is one disclosed in Japanese Patent Application Laid-Open No. 61055. The gazette disclosed in this publication is provided with a grain flow passage communicating with a dry grain storage chamber on the upper half side of the machine in a lower half of the machine with a pair of air-permeable partitions, and a machine body is provided on one side of the grain flow path. A hot-air chamber connected to the burner on the front side is provided, and an exhaust chamber connected to the blower on the rear side of the gas is provided on the other side of the grain flow path, and a far-infrared radiator that emits far-infrared light and this far-infrared radiation An exhaust pipe having a proximal end connected to the distal end of the body and an opening at the distal end opened near the outside air introducing portion is provided in the hot air path.

[0005]

In the grain dryer provided with the far-infrared radiator disclosed in the above publication, a far-infrared radiator that emits far-infrared rays is provided in a hot air passage, and the far-infrared ray radiator is provided. An exhaust pipe is provided to return the hot air in the body to the vicinity of the outside air introduction part.

However, a grain dryer for drying grains by far-infrared rays has a complicated structure because the far-infrared ray radiator and the exhaust pipe are incorporated in a hot air path.

[0007] As a result, it is necessary to provide a large-volume hot air path, which results in an increase in the size of the grain dryer, and there is a problem that it is difficult to incorporate the far-infrared radiator and the exhaust pipe into a medium or small grain dryer. .

Further, when a far-infrared ray radiator and an exhaust pipe are incorporated in the hot air passage of a small grain dryer, the far-infrared ray radiator must have a small diameter. There is a disadvantage that the effect is reduced.

[0009]

In order to eliminate the above-mentioned disadvantages, the present invention provides an upper storage unit, a middle drying unit, and a lower collecting unit in a dryer body that is long in the front-rear direction. Two flow passages are provided in the drying section, which are separated by a ventilation member and communicate with the storage section and the grain collecting section and extend in the front-rear direction. The two flow passages are partitioned by the ventilation member. Providing a hot air path extending in the front-rear direction, providing a partition member for partitioning the inside of the storage section above the hot air path, providing a burner on the front side of the dryer main body of the drying section, and providing an exhaust fan on the rear side of the dryer main body, A combustion chamber portion is provided to form a cylindrical combustion chamber that communicates with the burner and opens from the front side of the dryer body toward the rear side of the dryer body. Dryer book from the front side of the dryer body A far-infrared radiator extending to the rear side is provided, and the far-infrared radiator is provided with a return pipe function for returning hot air sent from the front side of the dryer body to the rear side of the dryer body to the front side of the dryer body. Features.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION
The circulation type dryer needs to provide a return pipe function for returning the hot air sent from the front side of the dryer body to the rear side of the dryer body to the front side of the dryer body, in addition to the far-infrared radiator, and to provide a large volume hot air path. In addition, the far-infrared radiator can be made large in diameter, and the energy by far-infrared rays is effectively used to enhance the energy saving effect.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 6 show an embodiment of the present invention. 5 and 6, reference numeral 2 denotes a circulation type grain dryer, and reference numeral 4 denotes a dryer main body. The dryer body 4 includes an upper section 6.
And the lower part 8. The upper section 6 is formed by an upper front plate 10, an upper rear plate 12, an upper side plate 14, and an upper top plate 16 into a closed bottomed rectangular box shape that is long in the front-rear direction. The lower portion 8 includes a lower front plate 18, a lower rear plate 20, and a lower side plate 22.
The lower bottom plate 24 is formed in a rectangular box shape with an open bottom and a long length in the front-rear direction.

The grain dryer 2 has a storage section 26 in the upper section 6 and a drying section 28 and a grain collecting section 30 in the lower section 8. The grain dryer 2 forms the dryer main body 4 long in the front-rear direction by joining the upper part 6 with a closed bottomed square box and the lower part 8 with the open bottomed square box to communicate the inside. ing. Thereby, the grain dryer 2 includes, in the dryer body 4, a storage section 26 into which grains are sequentially input from the top,
A drying unit 28 for drying cereals and a grain collecting unit 30 for collecting dried cereals are provided.

The grain dryer 2 is provided with a grain-lifting machine 32 on the upper front plate 10 and the lower front plate 18 side of the main body 4 of the dryer, and has a storage unit 2.
6, an upper conveying means 34 connected to the upper part of the graining machine 32 is provided on the upper top plate 16, and a lower conveying means 36 connected to the lower part of the graining machine 32 is provided below the grain collecting section 30. A filling port 38 communicating with the grain collecting section 30 is provided on the lower side plate 22 on the side, and a filling hopper 40 for opening and closing the filling port 38 is provided.

The grain dryer 2 lifts up the grain inserted from the insertion port 38 by the graining machine 32, drops the grain uniformly into the storage section 26 by the upper conveying means 34, and after drying in the drying section 28, It is collected in the grain collecting section 30, and the lower conveying means 3
The drying of the grain is performed by repeating the circulation of transferring to the lower part of the graining machine 32 and lifting it up again by 6.

As shown in FIG. 4, the grain dryer 2 is provided with a storage chamber 42 for storing grains that are equally dropped by the upper transport means 34 in the storage section 26. In addition, grain dryer 2
Is separated by a gas-permeable ventilation member 44 formed of a perforated plate, a mesh member, or the like in the drying unit 28 to connect the storage unit 26 and the grain collection unit 30 and extend in the front-rear direction of the dryer main body 2. There are two running paths 46.

The ventilation member 44 comprises two outer ventilation members 44a and two inner ventilation members 44b. The two outer ventilation members 44 a are disposed so as to be narrowed toward the upper part of the center of the grain collecting unit 30 from the upper end side of the drying unit 28. The two inner ventilation members 44b are connected to the drying section 28.
Are bent so as to expand laterally from the vicinity of the center of the upper end, and are bent so as to narrow down toward the center at an intermediate position, and are disposed so as to be joined at the lower center of the drying unit 28.

Thus, the upper end of the drying section 28 is located between the one outer ventilation member 44a and the inner ventilation member 44b and the other outer ventilation member 44a and the inner ventilation member 44b. Two flow channels 46 are provided symmetrically and open at 26 and open at the lower end at the grain collecting section 30.

At the opening at the lower end of each flow path 46, a grain collecting section 3 is provided.
A guide member 48 extending in the front-rear direction of the dryer main body 4 is provided in the inside 0, and a rotary valve 50 for feeding is provided. Further, the grain collecting part 32 is provided with two grain collecting plates 52 disposed so as to be narrowed toward the center downward from each other from the upper end side, and the two grain collecting plates 52 are joined and collected. A collecting portion 54 extending in the front-rear direction of the dryer main body 4 is provided at a central lower end of the grain portion 32.
Is provided.

The drying section 28 is provided with a hot air path 56 which is partitioned by the two inner ventilation members 44b and extends in the front-rear direction of the dryer body 4 between the two flow paths 46. In addition, the drying unit 28 is provided with the exhaust passage 58 extending in the front-rear direction between the outer ventilation member 44a, the lower side plate 22 and the grain collection plate 52, outside the two flow passages 46, respectively.

The grain dryer 2 includes a partition member 60 for forming the upper portion of the hot air passage 56 in the storage section 26 above the hot air passage 56.
Is provided. The partition member 60 has a substantially triangular cylindrical cross section inside the upper portion of the hot air passage 56. In addition, reference numeral 62
Is a guide member for cereal flowing down to the opening at the upper end of each flow path 46.

The grain dryer 2 is provided with a burner 64 which is a combustor for burning liquid fuel to generate hot air in the hot air passage 56 in front of the dryer main body 4 of the drying section 26.
An exhaust fan 66 for sucking and discharging the hot air in the exhaust air passage 58 is provided at the rear side of the dryer main body 4. Also, the burner 64
It is attached to the lower front plate 18. The exhaust fan 66 is attached to the lower rear plate 20.

The graining machine 32, the upper conveying means 34, the lower conveying means 36, the burner 64 and the blower 66 are controlled by a control section 68 attached to the lower front plate 18. The control unit 68 controls the operations of the grain raising machine 32, the upper conveying means 34, and the lower conveying means 36 to circulate the cereals,
4 and the operation of the blower 66 are controlled to generate hot air for drying the grain.

At this time, the grain dryer 2 is
As shown in FIG. 3, the dryer body 4 is communicated with the burner 64.
A combustion chamber portion 72 is formed to form a cylindrical combustion chamber 70 that opens from the front side to the rear side of the dryer main body 4. A far-infrared radiator 74 extending from the front side of the main body 4 to the rear side of the dryer main body 4 is provided.
Is provided with a return pipe function for returning the hot air sent from the front side of the dryer body 4 to the rear side of the dryer body 4 to the front side of the dryer body 4.

More specifically, the far-infrared radiator 74 is
Far-infrared radiation material (not shown) such as ceramics attached to the surface of far-infrared radiator 74 by hot air flowing inside
Is heated and emits far-infrared rays.

The far-infrared radiator 74 has a length equal to or more than half the length of the main body of the grain dryer 2 from the front side of the main body 4 to the rear side of the main body 4 of the dryer. .

Further, the far-infrared radiator 74 is provided as shown in FIG.
As shown in FIG. 2, in the hot air passage 56, a hot air supply pipe 76 extending from the open side outer peripheral portion of the combustion chamber portion 72 located on the front side of the dryer main body 4 to the rear side of the dryer main body 4, And a return pipe 78 for returning hot air sent from the front side of the dryer main body 4 to the rear side of the dryer main body 4 to the front side of the dryer main body 4 while functioning as a radiator of far infrared rays. And

As shown in FIGS. 1 and 2, one end of the hot air supply pipe 76 is fixed to the combustion chamber 72, and the other end is open.

As shown in FIGS. 1 and 2, the return pipe 78 is fixed at one end to the combustion chamber 72 so as to cover the hot air supply pipe 76, and is opened at the left and right ends at one end. 8
0 and the other end side is closed, and the hot air supply pipe 7
A return passage 82 is formed between the outer circumference of the return pipe 6 and the inner circumference of the return pipe 78.

At this time, at the outer peripheral portion of the combustion chamber portion 72, as shown in FIG. 2, the remote passage 82 formed between the outer periphery of the hot air supply pipe 76 and the inner periphery of the return pipe 78 is used to form the distant portion. A hot air guide member 84 is provided for guiding the hot air returned to one end of the infrared radiator 74 and flowing out of the opening 80 to the other end of the far infrared radiator 74.

Next, the operation will be described.

When the grain dryer 2 is started to operate, the controller 68 operates the grain lifting machine 32, the upper transport means 34, and the lower transport means 36, and transfers the grain from the upper storage section 26 to the middle drying section 28. After passing to the lower part collection unit 30 through
Lift and circulate again.

During the circulation of the grain, the grain dryer 2 burns the burner 64 by the control unit 68 to generate hot air, and also operates the exhaust fan 66 to generate hot air. 74 and emits far-infrared rays, the far-infrared rays are applied to the grains in the flow path 46 to warm the grains from the inside, and promote the drying of the grains.

That is, the combustion flame from the burner 64 is injected into the combustion chamber 70 in the combustion chamber 72, and the hot air generated by the combustion flame dries the inside of the hot air supply pipe 76 of the far-infrared radiator 74 from the front side of the dryer body 4. Passes behind the machine body 4.

The hot air that has reached the other end of the hot air supply pipe 76 is returned by a return passage 82 formed between the outer circumference of the hot air supply pipe 76 and the inner circumference of the return pipe 78 as shown in FIG.
The far infrared radiator 74 is returned to one end.

At this time, when the hot air that has heated the far-infrared radiator 74 reaches one end of the return pipe 78, the hot air flows from the open portions 80 formed on the left and right portions of the one end on the far-infrared radiator 7.
4 Runs out. The hot air that has flowed out is guided to the other end side of the far-infrared radiator 74 by the hot air guide member 84 as shown in FIG. 2, mixed with the outside air introduced by the exhaust fan 66, and enters the hot air passage 56. Contributes to the drying of grain.

The hot air flowing into the hot air passage 56 passes from the hot air passage 56 to the exhaust air passage 58 through the hot air passage 56 by the suction force of the exhaust air blower 66 to dry the grains in the hot air passage 46. The air is exhausted to the outside by the exhaust fan 66.

Therefore, while the grain dryer 2 circulates the grain to the storage section 26, the drying section 28, and the grain collection section 30,
The grain is warmed by the heat of the far-infrared radiator 74 in the storage unit 26, and the drying of the grain is promoted by the far-infrared ray in the drying unit 8 and dried by hot air.

Thus, the hot air path 5 of the grain dryer 2
The far-infrared radiator 74 provided in 6 does not need to provide the hot air path 56 having a large volume, and the far-infrared radiator 74 can be made large in diameter. Therefore, this grain dryer 2
Can reduce the size of the dryer itself, facilitate incorporation into the small grain dryer 2, facilitate drying of the grain by effectively utilizing energy from far-infrared rays, and enhance the energy saving effect.

Further, the far-infrared radiator 74 has a configuration in which the length from the front side of the dryer main body 4 of the grain dryer 2 to the rear side of the dryer main body 4 is 1/2 or more. As a result, a sufficient far-infrared radiation area can be secured for the far-infrared radiator 74, which can contribute to the effective use of energy by far-infrared rays and also contributes to efficient drying of the grains in the flow sluice passage 46. I can do it.

Further, since the far-infrared radiator 74 has a double-tube structure, it is possible to shield combustion noise flowing through the far-infrared radiator 74 and reduce the emission of combustion noise to the outside.
A good driving environment can be maintained.

It should be noted that the present invention is not limited to the above-described embodiment, and various applications and modifications are possible.

For example, in the grain dryer, if the outer diameter portion of the far-infrared radiator is formed into a cross-sectional waveform having a plurality of ridges and grooves extending in the longitudinal direction, the far-infrared radiation area can be further increased. In addition, the grain can be dried by effectively utilizing the energy of far infrared rays, and the energy saving effect can be enhanced.

[0044]

As described above in detail, the present invention provides an upper storage section, a middle drying section, and a lower grain collection section in a dryer body which is long in the front-rear direction, and is separated by a ventilation member in the drying section. Two flow passages extending in the front-rear direction while connecting the storage portion and the grain collection portion, and a hot air passage partitioned by a ventilation member and extending in the front-rear direction is provided between the two flow passages; Provide a partition member for partitioning the inside of the storage unit, provide a burner in front of the dryer body in the drying unit, and provide an exhaust fan in the back of the dryer body, contact the burner and direct it from the front of the dryer body to the back of the dryer body. A combustion chamber portion forming a cylindrical combustion chamber that is open at the same time is provided, and a far-infrared radiator extending from the front side of the dryer body to the rear side of the dryer body in the hot air path is provided at an outer peripheral portion on the open side of the combustion chamber portion. Dryer body for far infrared radiator A return pipe function for returning the hot air sent from the side to the rear side of the dryer main body to the front side of the dryer main body is additionally provided. The body can be large in diameter. For this reason, this grain dryer can reduce the size of the dryer itself, can be easily incorporated into a small grain dryer, and can effectively use the energy of far-infrared rays to dry the grain, thereby saving energy. Can be increased.
Further, the far-infrared radiator has a double-pipe structure, so that combustion noise flowing through the far-infrared radiator can be shielded, the combustion noise can be reduced to the outside, and a favorable driving environment can be maintained. it can.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a drying section of a grain dryer according to an embodiment of the present invention.

FIG. 2 is a schematic enlarged plan view of a far-infrared radiator portion of the grain dryer.

FIG. 3 is a schematic enlarged sectional view of a burner and a combustion chamber of a grain dryer.

FIG. 4 is a sectional view of a grain dryer.

FIG. 5 is a front perspective view of the grain dryer.

FIG. 6 is a perspective view from above and behind the grain dryer.

[Explanation of Signs] 2 Grain dryer 4 Dryer main body 26 Storage unit 28 Drying unit 30 Grain collection unit 42 Storage room 44 Ventilation member 46 Flowing passage 56 Hot air passage 58 Discharge air passage 60 Partition member 62 Guide member 64 Burner 66 Discharge Blower 68 Control unit 70 Combustion chamber 72 Combustion chamber unit 74 Far infrared radiator 76 Hot air supply pipe 78 Return pipe 80 Opening section 82 Return passage 84 Hot air guide member

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) F26B 21/00 F26B 21/00 C

Claims (2)

[Claims] An upper storage unit, a middle drying unit, and a lower grain collecting unit are provided in a dryer body that is long in the front-rear direction, and the storage unit and the grain collecting unit are partitioned by a ventilation member in the drying unit. Are provided, and two flow passages extending in the front-rear direction are provided, and a hot air passage partitioned by the ventilation member and extending in the front-rear direction is provided between the two flow passages. A partition member is provided, and a burner is provided on the front side of the dryer main body of the drying unit, and an exhaust fan is provided on the rear side of the dryer main body, and the burner is connected to the burner and directed from the front side of the dryer main body to the rear side of the dryer main body. A combustion chamber that forms an open tubular combustion chamber is provided, and a far-infrared radiator that extends from the front of the dryer main body to the rear of the dryer main body in the hot air path is provided at an outer peripheral portion of the combustion chamber on the open side. With this far-infrared radiator Is a grain dryer provided with a return pipe function for returning hot air sent from the front side of the dryer body to the rear side of the dryer body to the front side of the dryer body. 2. The grain dryer according to claim 1, wherein the far-infrared radiator has a length equal to or more than half the length of the dryer body from a front side of the dryer body to a rear side of the dryer body.