JP3603219B2 - Far-infrared grain dryer - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a far-infrared grain dryer, and more particularly to a far-infrared grain dryer that dries grains by far-infrared rays emitted from a far-infrared radiator.
[0002]
[Prior art]
BACKGROUND ART A grain dryer for drying grains such as rice and wheat is for drying grains such as rice and barley in a paddy state before milling, and includes a circulation type and a flat type.
[0003]
The circulation type grain dryer is provided with a storage section into which grains are sequentially input from the top in the dryer body, a drying section for drying the grains, and a grain collection section for collecting the dried grains. In the drying section, hot air and far-infrared rays emitted from the far-infrared radiator radiate the cereal from the upper storage section through the middle drying section to the lower-stage grain collection section, and then return to the upper storage section for circulation. There is something to dry.
[0004]
Such far-infrared grain dryers provided with such far-infrared radiators are disclosed in, for example, JP-A-8-14746, JP-A-9-113140, and JP-A-10-82586. Japanese Patent Application Laid-Open No. H8-14746 discloses a storage tank provided with a far-infrared radiation chamber for radiating and emitting far-infrared rays and hot air downward to grains flowing down. Japanese Unexamined Patent Publication No. Hei 9-113140 discloses that a radiator tube as a far-infrared radiator is provided in a hot air chamber, a burner is provided at one end of the radiator tube, and the other end of the radiator tube is opened into the hot air chamber. It was done. Japanese Unexamined Patent Application Publication No. 10-82586 discloses a method in which a far-infrared radiator is provided facing a portion where a grain flows, and the far-infrared radiator is rotated so that a surface facing the flowing grain is turned. Things.
[0005]
[Problems to be solved by the invention]
However, conventionally, in the far-infrared grain dryer, since the far-infrared radiator was directly incorporated into the far-infrared radiation room or the hot air passage, impurities such as dust and debris accumulated on the upper surface of the far-infrared radiator in particular. As a result, the far-infrared radiator is carbonized by the heat, and the far-infrared radiation is disturbed, and the drying of the grain is reduced, and the user needs to frequently remove the impurities. There was an inconvenience that it was troublesome.
[0006]
[Means for Solving the Problems]
Therefore, in order to eliminate the above-mentioned inconvenience, the present invention provides an upper storage unit, a middle drying unit, and a lower collection unit in a dryer body that is long in the front-rear direction, and the storage unit is provided in the drying unit. And a flueway extending in the front-rear direction in communication with the grain collection unit, and a far-infrared radiation chamber extending in the front-rear direction adjacent to the flourway is provided, and the dryer body is provided outside the drying unit. A far-infrared grain dryer in which a far-infrared radiator that communicates with the burner to circulate hot air from the burner is provided in the far-infrared radiation chamber. A protection member formed in a mountain-shaped cross section with a repose angle at which impurities from above do not accumulate between the side cover portion and the other side cover portion is provided integrally and closely.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
According to the present invention, a protection member formed in a mountain-shaped cross section with a repose angle at which impurities from above do not accumulate on the one-side cover portion and the other-side cover portion integrally adheres to the upper portion of the far-infrared radiator. To prevent impurities such as dust and dirt from accumulating on the far-infrared radiator, thereby preventing carbonization due to the heat of the far-infrared radiator and preventing far-infrared radiation from the far-infrared radiator. It is possible to radiate well and to improve the drying of the grain. Further, it is possible to prevent dust from rising by wind and the like, and furthermore, since the user does not need to remove impurities, the removal work can be omitted. .
[0008]
【Example】
Hereinafter, embodiments of the present invention will be described in detail and specifically with reference to the drawings. 1 to 7 show an embodiment of the present invention. 6 and 7, 2 is a circulation type far-infrared grain dryer, 4 is a dryer main body, 6 is a storage unit, 8 is a drying unit, and 10 is a grain collection unit. The grain dryer 2 forms a dryer body 4 that is long in the front-rear direction by the front plate 12, the rear plate 14, one side, and the other side plates 16-1 and 16-2. The grain dryer 2 is provided with a storage section 6 into which grains are sequentially input, a drying section 8 for drying grains, and a grain collecting section 10 for collecting the dried grains, in order from the top.
[0009]
Further, the dryer main body 4 is provided with a grain-lifting machine 18 on the front plate 12 side, and above the storage unit 6 is provided with an upper conveying means 20 communicating with the upper part of the grain-milling machine 18. Below, is provided a lower conveying means 22 which communicates with the lower part of the grain raising machine 18.
[0010]
Thereby, in the grain dryer 2, the grains lifted by the grain lifting machine 18 are equally dropped into the storage unit 6 by the upper conveying means 20, and the grains are dried in the drying unit 8 and then collected in the grain collection unit 10. The cereal is dried by repeating the circulation in which the lower conveying means 22 conveys the material to the lower part of the graining machine 18 and lifts it again.
[0011]
A gun type burner 24 that burns liquid fuel to generate hot air is attached to the front plate 12 of the dryer main body 4 outside the drying unit 8. Further, on the rear plate 14 of the dryer main body 4 outside the drying unit 8, a blower 26 for sucking and discharging hot air after drying the grains inside is attached.
[0012]
The drive of the burner 24 and the exhaust fan 26 is controlled by a control panel 28 attached to the front plate 12.
[0013]
In the drying unit 8, the first-side and first-side second partition plates 30-1 </ b> A and 30-1 connect the storage unit 6 and the grain collection unit 10 to extend in the front-rear direction of the dryer main body 4. 1B forms one side first flow path 32-1A, one side third, one side fourth partition plate 30-1C, 30-1D forms one side second flow path 32-1B, and The other-side first flow path 32-2A is formed by the other-side first and other-side second partition plates 30-2A and 30-2B, and the other-side third and other-side fourth partition plates 30-2C and 30 are formed. -2D forms the other-side second flow path 32-2B. Each of the partition plates 30 is formed of a member having good air permeability such as a perforated plate or a net-like member so that hot air can easily flow.
[0014]
In addition, a central exhaust path 34M is formed at a substantially central portion between the first-side first partition plate 30-1A and the other-side first partition plate 30-2A. One side exhaust path 34-1 is formed between the one side plates 16-1, and the other side exhaust path 34-2 is provided between the other side fourth partition plate 30-2D and the other side plate 16-2. Is formed. Each of these exhaust passages 34 is closed at an upper portion and a lower portion.
[0015]
Further, between the one-side second partition plate 30-1B and the one-side third partition plate 30-1C, the one-side first flow path 32-1A and the one-side second flow path 32-1B are adjacent to each other. Thus, a one-side far-infrared radiation chamber 36-1 is formed. Further, between the other-side second partition plate 30-2B and the other-side third partition plate 30-2C, the other-side first flow path 32-2A and the other-side second flow path 32-2B are adjacent to each other. Thus, the other-side far-infrared radiation chamber 36-2 is formed. These far-infrared radiation chambers 36 have a relatively small width and are formed at substantially the same height as the flow path 32, and are closed at upper and lower portions.
[0016]
In the far-infrared radiation chamber 36, a far-infrared radiation component 38 is provided as a far-infrared radiator. The far-infrared radiating component 38 includes a central radiating pipe 40M, an upper radiating pipe 40-1, a lower radiating pipe 40-2, and a return pipe assembly member 42, which are integrally formed. The center radiating tube 40M, the upper radiating tube 40-1, and the lower radiating tube 40-2 are provided with a far-infrared radiation material such as ceramics on the surface. Therefore, the central heat radiating pipe 40M, the upper heat radiating pipe 40-1, and the lower heat radiating pipe 40-2 emit far infrared rays when heated by the hot air from the burner 24 flowing therein. The return pipe assembling member 42 is configured such that the central assembly portion 44, the upper curved pipe 46-1, and the lower curved pipe 46-2 are integrated. In addition, since the central radiating tube 40M, the upper radiating tube 40-1, and the lower radiating tube 40-2 are disposed in the far-infrared radiation chamber 36 having a relatively small width, space is taken into consideration. The short axis X is in the horizontal direction and the long axis Y is in the vertical direction, and each is formed in an elliptical cross section (see FIG. 3).
[0017]
One end of the central radiator tube 40M is connected to the burner 24 that generates hot air, and the other end is connected to the central collecting portion 44 of the return pipe assembly member 42. One end of the upper heat radiation pipe 40-1 is connected to the upper curved pipe 46-1 of the return pipe assembly member 42 via the upper throttle member 48-1, and the upper opening 50-1 at the other end is connected to the burner 24. It is open in the near far infrared radiation chamber 36 nearby. One end of the lower heat radiating tube 40-2 is connected to the lower curved tube 46-2 of the return pipe assembling member 42 via the lower throttle member 48-2, and the other end of the lower opening 50- 2 opens into the far infrared radiation chamber 36 near the burner 24.
[0018]
The upper part of the central heat radiating pipe 40M and the upper heat radiating pipe 40-1 are integrally connected in parallel by an upper connecting body 52-1. In addition, the lower part of the central heat radiating pipe 40M and the lower heat radiating pipe 40-2 are integrally connected in parallel by a lower connecting body 52-2.
[0019]
In addition, a protection member (cover) 54 for preventing the accumulation of impurities such as dust and dirt is provided on the upper portion of the far-infrared radiation structure 38. In this embodiment, a protection member 54 is integrally provided above the central radiator pipe 40M through which high-temperature hot air is sent near the burner 24 (shown by hatched portions in FIG. 1). The protection member 54 is formed in a mountain shape in cross section by the one-side cover part 54-1 and the other-side cover part 54-2, and one end is returned from one end of the central heat radiation tube 40M to the other end of the center of the pipe assembly member 42. The length up to the gathering portion 44 is attached in close contact with the upper part of the central radiator pipe 40M so as to prevent dust from rising by wind or the like, and covers only the upper part which is a part of the central radiator pipe 40M. The central radiating tube 40M is open downward and in the left-right direction. As shown in FIGS. 2 and 3, the angle θ between the one-side cover 54-1 and the other-side cover 54-2 of the protection member 54 is 60 degrees as a repose angle at which impurities from above are not deposited. Degrees are set below.
[0020]
An elbow flat tube cover assembly 56 as another protection member is provided on a part of the other end of the lower curved tube 46-2, the lower throttle member 48-2, and the lower radiator tube 40-2. It is attached closely together. The elbow flat tube cover assembly 56 is formed in the same shape as the above-described protective member 54.
[0021]
Next, the operation of this embodiment will be described.
[0022]
When the far-infrared grain dryer 2 starts operation, a motor (not shown) is driven by operation of the control panel 28, and the grain is transferred from the upper storage unit 6 to the lower grain collection unit 10 via the middle drying unit 8. And then lifted again and circulated.
[0023]
The far-infrared grain dryer 2 ignites and burns the burner 24 by operating the control panel 28 during the circulation of the grains to generate hot air, and flows the hot air into each of the radiating tubes 40 of the far-infrared radiating component 38. And irradiates far-infrared rays to dry the grains flowing in the flow path 32. The hot air that has heated each of the radiator tubes 40 flows into the far-infrared radiation chamber 36, passes through the flow path 32 due to the suction force of the exhaust fan 26, flows to the exhaust path 34, and the grains in the flow path 32 Is dried and discharged outside by the blower 26.
[0024]
Thereby, the far-infrared grain dryer 2 dries the grains with the hot air and the far-infrared rays radiated from each radiating pipe 40 in the drying section 8 while circulating the storage section 6, the drying section 8, and the grain collecting section 10. .
[0025]
Further, during the circulation of the grain, impurities such as dust and dirt fall onto the far-infrared radiating component 38. However, the deposition is prevented by the protective member 54, and in particular, high-temperature hot air near the burner 24 is removed. There is no accumulation on the circulating central radiator tube 40M.
[0026]
This protects the central radiator pipe 40M, which is high in temperature near the burner 24, and prevents carbonization of impurities such as dust and dirt by the heat of the central radiator pipe 40M. Radiated far infrared rays satisfactorily, thereby improving the drying of the grains. Further, since there is no need for the user to remove impurities, the removal operation can be omitted.
[0027]
In addition, since the central radiating pipe 40M, the upper radiating pipe 40-1, and the lower radiating pipe 40-2 are formed in an elliptical cross section with the short axis directed in the horizontal direction and the long axis directed in the vertical direction, It can be easily arranged even in the far-infrared radiation chamber 36 having a relatively small width, so that the layout is easy and the space can be made advantageous.
[0028]
Furthermore, since the protection member 54 covers only the upper part which is a part of the central heat radiating pipe 40M, and the lower and left and right directions of the central heat radiating pipe 40M are open, the radiation direction and the surface area from the central heat radiating pipe 40M are wide. Therefore, the drying efficiency of the grain by far infrared rays can be improved.
[0029]
Further, the protection member 54 has a length from one end of the central heat radiating pipe 40M to the central gathering portion 44 of the return pipe assembling member 42 on one end side, and is in close contact with the upper part of the central heat radiating pipe 40M and integrally. Since it is attached, it is possible to prevent dust from rising by wind or the like.
[0030]
Further, in the protection member 54, since the angle θ between the one-side cover portion 54-1 and the other-side cover portion 54-2 of the mountain-shaped cross section is set to 60 degrees or less as the angle of repose, impurities from the upper side , And the deposition of impurities can be effectively prevented.
[0031]
In the present invention, the protective member is provided not only in the central heat radiating pipe but also in the upper heat radiating pipe and the lower heat radiating pipe to radiate far-infrared rays from all of the heat radiating pipes, thereby further improving grain drying. It is also possible.
[0032]
【The invention's effect】
As is apparent from the detailed description above, according to the present invention, the upper portion of the far-infrared radiator has a cross section with a repose angle at which the impurities from the upper side are not deposited on the one side cover portion and the other side cover portion. Prevents impurities such as dust and dirt from accumulating on the far-infrared radiator and prevents carbonization due to the heat of the far-infrared radiator by providing a protective member integrally formed in close contact In addition, it can radiate far-infrared rays from the far-infrared radiator well, improve the drying of grains, prevent dust from flying up by wind, etc., and also require the user to remove impurities. , The removal operation can be omitted.
[Brief description of the drawings]
FIG. 1 is a side view of a far-infrared radiation structure.
FIG. 2 is a front view of the far-infrared radiation structure.
FIG. 3 is a partially enlarged view of the far-infrared radiation structure of FIG. 2;
FIG. 4 is a partially cutaway sectional view of a drying unit and a grain collecting unit of a far-infrared grain dryer incorporating a far-infrared radiation component.
FIG. 5 is a partially cutaway front view of a drying section and a grain collecting section of a far-infrared grain dryer incorporating a far-infrared radiation radiator.
FIG. 6 is a side view of a far-infrared grain dryer.
FIG. 7 is a front view of the far-infrared grain dryer.
[Explanation of symbols]
2 Far-infrared grain dryer 4 Dryer main body 6 Storage unit 8 Drying unit 10 Grain collecting unit 24 Burner 26 Air blower 28 Control board 32 Flowing grain path 36 Far-infrared radiation room 38 Far-infrared radiation structure 40 Radiation tube 54 Protection member

Claims (1)

An upper storage unit, a middle drying unit, and a lower grain collection unit are provided in a dryer body that is long in the front-rear direction, and a flow extending in the front-rear direction by connecting the storage unit and the collection unit in the drying unit. A grain path is provided and a far-infrared radiation chamber extending in the front-rear direction is provided adjacent to the flowing grain path, and a burner is provided on the outside of the drying unit in the dryer main body, and the burner is connected to the burner to communicate with the burner. In the far-infrared grain dryer provided with a far-infrared radiator for circulating hot air in the far-infrared radiation chamber, impurities from the upper side of the far-infrared radiator at one side cover portion and the other side cover portion have impurities. A far-infrared grain dryer, wherein a protection member formed into a mountain-shaped cross section so as to form a repose angle that does not accumulate is integrally provided in close contact .

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