JP2002022358A - Grain drying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a grain drying machine in which the size is reduced, radiation area of far infrared ray is increased, energy saving effect is enhanced and combustion noise is reduced. SOLUTION: An upper stage storing section, a middle stage drying section and a lower stage grain collecting section are provided in the body of a longitudinally elongated drying machine. Two grain channels partitioned by a ventilation member is provided in the drying section, a hot air passage is provided between two grain channels, a return chamber extending in the longitudinal direction while being partitioned by a partitioning member is provided in the storage section above the hot air passage, a burner is provided on the front side of the drying machine body except the drying section, an exhauster is provided on the rear side of the drying machine body, an far infrared ray radiator having one end side communicating with the burner and the other end side extending to the vicinity of the exhauster is provided in the hot air passage, and a return pipe having one end side communicating with the far infrared ray radiator in the vicinity of the exhauster and the other end side opening into the hot air passage in the vicinity of the burner is provided for the return chamber in the drying section.

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 needs to provide a large-volume hot-air path since the far-infrared radiator and the exhaust pipe are incorporated in the hot-air path. There is a problem that it is difficult to incorporate it into a small grain dryer due to an increase in the size of the 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, so that the effective use of energy by far-infrared rays is impaired, and energy is saved. There is a disadvantage that the effect is reduced.

[0008]

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. A hot air passage extending in the front-rear direction; a return chamber partitioned by a partition member in the storage portion above the hot air passage and extending in the front-rear direction; a burner provided on a front side of the dryer main body of the drying unit; An exhaust fan is provided on the rear side, and a far-infrared radiator having one end connected to the burner and extending to the vicinity of the exhaust fan is provided in the hot air path, and one end is provided on the far-infrared radiator near the exhaust fan. Side It is the other end with the is characterized in that the return pipe is opened in the hot air passage of the burner near provided in the return chamber in the drying section.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The circulation type dryer according to the present invention is provided with a return chamber partitioned by a partition member in a storage section above a hot air passage and extending in the front-rear direction, and a burner provided in the drying section in front of the dryer body. An exhaust fan is provided on the rear side of the dryer body, and one end is connected to the burner in the hot air path, and a far-infrared radiator whose other end is extended to the vicinity of the exhaust fan. One end is connected to the far-infrared radiator near the exhaust fan. Since the return pipe is provided in the return chamber in the drying unit at the same time as the other end is opened in the hot air path near the burner, since the far air infrared radiator alone is provided in the hot air path and the return pipe is not provided, There is no need to provide a hot air path with a large volume, the far-infrared radiator can be made large in diameter, and since a return pipe is provided in a return chamber partitioned by a partition member in the storage unit, heat generated by the return pipe In the reservoir Objects can be warmed, and the return pipe can be isolated from the outside by the partition member and the surrounding crops.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of the present invention. 3 and 4, reference numeral 2 denotes a circulation type grain dryer.
4 is a dryer main body. The dryer main body 4 includes an upper section 6 and a lower section 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 is formed by a lower front plate 18, a lower rear plate 20, a lower side plate 22, and a lower bottom plate 24 into a closed bottomed rectangular box shape that is long 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 side of the upper front plate 10 and the lower front plate 18 of the main body 4 of the dryer.
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. 2, the grain dryer 2 is provided with a storage chamber 42 for storing grains that are equally dropped by the upper conveying 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 expanded so as to extend sideways from the vicinity of the center of the upper end of the drying unit 28, and are bent so as to narrow down toward the center at an intermediate position. It is arranged so as to be joined at the lower center.

Thus, the upper end of the drying section 28 is provided 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 which are disposed close to each other. 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 inside the dryer 2, and a rotary valve 50 for feeding out 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 passage 56 between the two flow passages 46, which is partitioned by two inner ventilation members 44b and extends in the front-rear direction of the dryer body 4. 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 has a return chamber 62 which is partitioned by a partition member 60 and extends in the front-rear direction of the dryer body 4 in the storage section 26 above the hot air passage 56. The partition member 60 includes a top plate portion 60a that covers the upper end of the hot air passage 56, and two roof plate portions 60b that are respectively erected from both side edges of the top plate portion 60a and whose upper ends are joined to each other. A return chamber 62 having a substantially triangular cylindrical cross section is provided. Return room 62
Is provided separately from the ventilation member 44 that partitions the hot air passage 56. Reference numeral 64 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 66 for burning liquid fuel and generating hot air in the hot air passage 56 in front of the dryer main body 4 of the drying unit 26, and at a rear side of the dryer main body 4 of the drying unit 26. An air blower 68 for sucking and discharging the hot air from the air discharge path 58 is provided. The burner 66 is attached to the lower front plate 18. The exhaust fan 68 is attached to the lower rear plate 20.

The engraving machine 32, the upper conveying means 34, the lower conveying means 36, the burner 66 and the blower 68 are controlled by a control unit 70 mounted on the lower front plate 18. The control unit 70 controls the operations of the grain raising machine 32, the upper conveying unit 34, and the lower conveying unit 36 to circulate the grains, and controls the operations of the burners 66 and the air blowers 68 to generate hot air for drying the grains. .

As shown in FIGS. 1 and 2, one end of the grain dryer 2 is connected to a burner 66 in a hot air passage 56, and a top plate 60 of a partition member 60 for partitioning a return chamber 62.
a, a far-infrared radiator 72 whose other end extends to the vicinity of the exhaust fan 68 along the lower side. Far infrared radiator 72
Is a cylindrical portion 72a having an open end on the side of the burner 66.
And a lid 72b for closing the other end of the cylindrical portion 72a, and is formed in a substantially cylindrical shape with one end open, and a radiator passage 74 is provided inside. The far-infrared radiator 72 is made of a far-infrared radiation material (not shown) such as ceramic attached to the surface of the far-infrared radiator 72 by hot air flowing through the radiator passage 74.
Is heated and emits far infrared rays.

The far-infrared radiator 72 is provided with a protruding cylindrical connecting portion 76 at the upper end on the other end side of the cylindrical portion 72a, and has a connecting passage 78. A return pipe 80 is provided in communication with the far-infrared radiator 72. The return pipe 80 is provided in the return chamber 62 in the drying unit 26, has a return passage 82 therein, and connects an opening 84 directed downward at one end to the communication part 76 of the far-infrared radiator 72. Exhaust fan 68
An opening 86 facing the hot air passage 56 is provided in the vicinity of the top plate portion 60 a so as to face the hot air passage 56, and an opening 86 directed downward at the other end is provided facing the hot air passage 56 near the burner 66.

As a result, the grain dryer 2 is
An opening 84 at one end is connected to a connecting portion 76 of the far infrared radiator 72 in the vicinity, and a return pipe 80 having an opening 86 at the other end opened to the hot air passage 56 near the burner 66.
It is provided in a return chamber 62 in the drying section 26.

Next, the operation will be described.

When the grain dryer 2 starts operating, the control unit 70 operates the grain-lifting machine 32, the upper conveying means 34, and the lower conveying means 36, and moves the grain from the upper storage part 26 to the middle drying part 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 66 by the control unit 70 to generate hot air and activates the exhaust fan 68 to generate hot air. And irradiates far-infrared rays through the radiator passage 74, and irradiates far-infrared rays to the grains in the flow path 46 to promote drying.

The hot air that has heated the far-infrared radiator 72 flows into the return passage 82 of the return pipe 80 from the communication section 76 on the side of the exhaust fan 68 through the opening 84, and the inside of the drying section 26 provided with the return pipe 80. By warming the roof panel 60b that partitions the return chamber 62, the grains flowing around the roof panel 60b of the storage unit 26 are warmed, and drying promotion is promoted.

The hot air from the return pipe 80 flows into the hot air passage 56 from the opening 86 on the burner 66 side, is mixed with the outside air introduced by the exhaust fan 68, and flows from the hot air passage 56 by the suction force of the exhaust fan 68. After passing through the passage 46, it flows to the exhaust air passage 58, where the grains in the flow-through passage 46 are dried and discharged outside by the exhaust fan 68.

Thus, the grain dryer 2 warms the grains by the heat of the return pipe 80 in the storage section 26 while circulating the grains to the storage section 26, the drying section 28, and the grain collection section 30. In step 8, the drying of the grains is promoted by the far infrared rays and the grains are dried by hot air.

In the grain dryer 2, a hot air passage 56 is provided between the two flow passages 46 of the drying section 28 and is separated by two inner ventilation members 44 b and extends in the front-rear direction of the dryer body 4. A return chamber 62 partitioned by a partition member 60 and extending in the front-rear direction of the dryer main body 4 is provided in the storage section 26 above the path 56. The grain dryer 2 is provided with a far-infrared radiator 72 having one end connected to the burner 66 and extending to the vicinity of the exhaust fan 68 in the hot air passage 56, and one end of the far-infrared radiator 72 near the exhaust fan 68. A return pipe 80 is provided in the return chamber 62 in the drying unit 26, the return pipe 80 being connected to and having the other end opened to the hot air passage 56 near the burner 66.

As a result, the grain dryer 2 is
Since only the far-infrared radiator 72 is provided and the return pipe 80 is not provided, there is no need to provide a large-volume hot air path 56, and the far-infrared radiator 72 can be made large in diameter. For this reason, this grain dryer 2 can aim at miniaturization of the dryer itself, easy to incorporate into the small grain dryer 2, and can make the far-infrared radiator 72 large in diameter. Therefore, the radiation area of far-infrared rays can be increased, the grain can be dried by effectively using the energy of far-infrared rays, and the energy saving effect can be enhanced.

In the grain dryer 2, since the return pipe 80 is provided in the return chamber 62 partitioned by the partition member 60 in the storage section 26, the grains in the storage section 26 are heated by the heat of the return pipe 80. The return pipe 80 can be isolated from the outside by the partition member 60 and surrounding grains. For this reason, the grain dryer 2 can promote the drying of the grain, improve the drying efficiency, and can shield the combustion noise flowing through the return pipe 80, and reduce the emission of the combustion noise to the outside. Therefore, a favorable driving environment can be maintained.

The grain dryer 2 further includes a partition member 60 for partitioning the return chamber 62 and a ventilation member 44 for partitioning the hot air passage 56.
By providing the return pipe 80 separately, the far-infrared radiator 72 having a different shape, size, radiation characteristic and the like is assembled in the hot air passage 56 of the lower section 8 with respect to the upper section 6 to which the return pipe 80 is assembled. By joining the upper section 6 and the lower section 8 such that the far-infrared radiator 72 communicates with the 80, the grain dryer 2 having the far-infrared radiator 72 of different specifications can be easily assembled.

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,
The grain dryer 2 shown in FIG. 5 has a far-infrared radiation area by forming the cylindrical portion 72a of the far-infrared radiator 72 into a cross-sectional waveform having a plurality of ridges and grooves extending in the longitudinal direction. Further, the grain can be dried by effectively utilizing the energy of far infrared rays, and the energy saving effect can be enhanced. Also, the grain dryer 2 shown in FIG.
Are the top plate portion 60a of the partition member 60 and the two roof plate portions 6
A return chamber 62 is provided by tightly joining the upper front plate 10 and the upper rear plate 12 to each other, and a closed return chamber 62 is provided. Is provided, and the top plate 62a near the burner 66 is provided with an opening 86 that opens to the hot air passage 56, so that the return pipe 80 can be unnecessary, and the number of parts can be reduced. Further, the two roof plate portions 60 of the partition member 60 are provided.
b can be directly heated, the grains in the storage section 26 can be efficiently heated, and effective use of energy can be achieved.

[0036]

As described above, the grain dryer of the present invention is
Since only the far-infrared ray radiator is provided in the hot air path and no return pipe is provided, there is no need to provide a large-volume hot air path, so the dryer itself can be reduced in size and it can be used for a small grain dryer. Easy to assemble and the diameter of the far-infrared radiator can be increased, so the far-infrared radiation area can be increased, the grain can be dried by effectively utilizing the energy of the far-infrared, and the energy saving effect can be improved. Since the return pipe is provided in the return chamber partitioned by the partition member in the storage section, the grains in the storage section can be warmed by the heat of the return pipe, thereby promoting the drying of the grains. In addition, drying efficiency can be improved, and the return pipe can be isolated from the outside by the partition member and surrounding grains, so that combustion noise flowing through the return pipe can be shielded, and the combustion noise can be radiated to the outside. Good operating environment that can be reduced It can be maintained.

[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 sectional view of a remote grain dryer.

FIG. 3 is a front perspective view of the grain dryer.

FIG. 4 is a perspective view from above and behind the grain dryer.

FIG. 5 is an enlarged sectional view of a drying section of a grain dryer according to another embodiment.

FIG. 6 is an enlarged sectional view of a drying section of a grain dryer according to still another embodiment.

[Explanation of symbols]

 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 particle path 56 Hot air path 58 Exhaust path 60 Partition member 62 Return chamber 66 Burner 68 Exhaust fan 72 Far infrared radiation Body 74 Radiator path 76 Communication section 78 Communication path 80 Return pipe 82 Return path

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Shogo Sugiyama 4-1, Yamana-cho, Fukuroi-shi, Shizuoka Prefecture F-term (reference) 3L113 AA07 AB03 AB06 AC04 AC10 AC45 AC46 AC48 AC49 AC53 AC54 AC62 AC63 AC67 AC73 AC74 BA03 CB03 DA02 DA13 DA14 DA26

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, and in the storage portion above the hot air passage. A return chamber partitioned by a partition member and extending in the front-rear direction is provided, 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 one end of the burner is provided in the hot air path. A far-infrared radiator that is connected and has the other end extending to the vicinity of the exhaust fan is provided, and one end is connected to the far-infrared radiator near the exhaust fan, and the other end is opened to the hot air passage near the burner. Return A grain drying machine, wherein a drying pipe is provided in a return chamber in the drying section. 2. The grain dryer according to claim 1, wherein a partition member for partitioning the return chamber is provided separately from a ventilation member for partitioning the hot air path.