JP2015108490A - Grain dryer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a grain dryer capable of introducing hot wind of uniform temperature in a large quantity to a draft drying part and effectively drying grain in a uniform manner.SOLUTION: In a grain dryer of the invention, a guide partition is arranged in a hot wind chamber, which guides outside air introduced in a case to the hot wind chamber, extends from one side of a machine body to the other side and has an end opening in the hot wind chamber. In the case, a burner partition is arranged for guiding the outside air heated by a burner into the guide partition. The outside air heated by the burner and other outside air are mixed in the guide partition and are introduced into the hot wind chamber.

Description

  The present invention relates to a grain dryer that dries grains with hot air and can effectively dry the grains without unevenness.

  Conventionally, the grain dryer which dries a grain with a hot air is known (for example, refer patent document 1).

FIG. 3 is a side sectional view of the grain dryer described in Patent Document 1, and FIG. 4 is a front sectional view of the grain dryer of FIG.
The grain dryer 10 described in Patent Document 1 includes a machine body 12 having a grain tank 14 in the upper part and a ventilation drying unit 15 in the lower part, and a grain raising machine 70 erected on the front side of the machine body 12.

Below the ventilation drying unit 15, a lower screw conveyor 64 connected to the lower part of the cerealing machine 70 is disposed.
Further, an upper screw conveyor 76 connected to the upper portion of the cerealing machine 70 is disposed above the grain tank 14, and a rotating plate 90 is provided below the rear end of the upper screw conveyor 76. .

  A hot air chamber 22 is provided in the center of the ventilation drying unit 15, and a grain drying chamber 36 is provided on both sides of the hot air chamber 22 through an air-permeable partition wall 18. An air exhaust chamber 40 is provided through a partition wall 16 having

An opening 26 communicating with the hot air chamber 22 is provided in the front wall 12 </ b> A of the airframe 12, and a case 42 formed with a plurality of outside air inlets 44 is disposed on the front side of the opening 26. .
Also, a burner case 46 having a burner 48 is disposed on the left side directly below the case 42, and the case 42 and the burner case 46 communicate with each other through openings formed therein. .

  An opening 52 communicating with the air exhaust chamber 40 is provided in the rear wall 12B of the airframe, and a suction fan 54 and an air exhaust duct 56 are disposed on the rear side of the opening 52 via a fan box 50. ing.

Grain stretched in the machine body 12 in the grain dryer 10 is cerealed by the cerealing machine 70, conveyed by the upper screw conveyor 76, and dropped onto the upper surface of the rotating plate 90, and the grain tank 14 Are distributed evenly.
The grains put into the grain tank 14 flow down the ventilation drying unit 15, are conveyed toward the front side of the machine body 12 by the lower screw conveyor 64, and are cerealed again by the cerealing machine 70, It is conveyed by the upper screw conveyor 76 and falls onto the upper surface of the rotating disk 90, dispersedly charged into the grain tank 14, and flows down the ventilation drying unit 15.

  In the grain dryer 10, when the suction fan 54 is driven, outside air is introduced from the outside air inlet 44 into the case 42 provided on the front surface of the machine body 12. The outside air introduced into the case 42 is sucked into the hot air chamber 22 from the opening 26 of the front wall 12A of the machine body 12 as hot air for drying grains together with the outside air heated by the burner 48. The hot air sucked into the hot air chamber 22 passes through the air-permeable partition wall 18 and enters the grain drying chamber 36, and acts on the grains flowing down the grain drying chamber 36 to take away moisture. Thereafter, the hot air passes through the air-permeable partition wall 16 and flows into the air exhaust chamber 40 and is exhausted from the air exhaust duct 56 disposed on the rear surface side of the body 12.

  In the grain dryer 10, the circulation drying is repeated until the grain stretched into the machine body 12 reaches a predetermined moisture content.

By the way, in general, in a grain dryer, in order to effectively dry the grain uniformly, it is necessary to introduce a large amount of hot air having a uniform temperature into the ventilation drying section.
According to the grain dryer 10, a large amount of outside air can be introduced into the ventilation drying unit 15 through the case 42.

  However, in the grain dryer 10, outside air introduced into the case 42 from the outside air inlet 44 is introduced into the ventilation drying unit 15 as hot air for grain drying together with outside air heated by the burner 48. Therefore, there is a problem that hot air having a uniform temperature cannot be introduced into the ventilation drying unit 15 and the grains cannot be effectively dried without unevenness.

JP 2009-275983 A

  Then, an object of this invention is to provide the grain dryer which can introduce a large quantity of hot air of uniform temperature into a ventilation drying part, and can dry a grain effectively evenly.

In order to achieve the above object, the present invention provides:
A grain dryer having a machine body having a grain storage part at the upper part and a ventilation drying part at the lower part, wherein the grain flowing down from the grain storage part is ventilated and dried in the ventilation drying part, wherein outside air is introduced into one side of the machine body A case formed with a mouth is provided and a burner is provided, and an exhaust fan is provided on the other side of the machine body. The ventilation drying unit includes a hot air chamber communicating with the case, A drying chamber provided on the side of the hot air chamber via an air-permeable partition and the grain flows down, and an exhaust air provided on the side of the drying chamber via an air-permeable partition and communicated with the exhaust fan A grain dryer comprising a chamber,
In the hot air chamber, a partition that guides outside air introduced into the case to the hot air chamber, extending from one side of the machine body to the other side and opening in the hot air chamber. And a burner partition that guides the outside air heated by the burner into the guide partition.
The outside air heated by the burner and the other outside air are mixed in the guide partition and introduced into the hot air chamber.

  In the present invention, it is preferable that the burner partition has a cylindrical shape, and a side surface opens in the guide partition.

  In the present invention, the guide partition is preferably a partition that emits far infrared rays.

  According to the present invention, the outside air heated by the burner and the other outside air are mixed in the guide partition wall and introduced into the hot air chamber, so that the temperature of the hot air introduced into the ventilation drying unit can be made uniform. Therefore, it becomes possible to dry grain effectively without unevenness.

  The present invention can promote the mixing of the outside air heated by the burner and the other outside air as long as the side surface of the burner partition opens in the guide partition.

  In the present invention, if the guide partition that guides the outside air introduced into the case to the hot air chamber is a partition that emits far infrared rays, the grain can be efficiently dried by the action of far infrared radiation heat.

The sectional side view of the ventilation drying part in the grain dryer of this invention. AA sectional drawing of FIG. The side sectional view of the grain dryer described in patent documents 1. The front sectional view of the grain dryer described in patent documents 1.

Embodiments of the present invention will be described.
<Overall configuration of grain dryer>
The grain dryer according to the embodiment of the present invention is a well-known one provided with a machine body having a grain tank in the upper part and a ventilation drying unit in the lower part, and a cerealing machine standing on the front side of the machine body.

The overall configuration of the grain dryer according to the embodiment of the present invention will be described with reference to FIGS. 3 and 4. The lower screw conveyor 64 connected to the lower part of the cerealing machine 70 is below the ventilation drying unit 15. Is arranged.
Further, an upper screw conveyor 76 connected to the upper portion of the cerealing machine 70 is disposed above the grain tank 14, and a rotating plate 90 is provided below the rear end of the upper screw conveyor 76. .

Grains stretched in the machine body 12 in the grain dryer according to the embodiment of the present invention are cerealed by the cerealing machine 70, conveyed by the upper screw conveyor 76, and dropped onto the upper surface of the turntable 90, The cereal tanks 14 are uniformly distributed.
Grains put into the grain tank 14 flow down the ventilation drying unit 15, are conveyed toward the front side of the machine body 12 by the lower screw conveyor 64, and are cerealed by the cerealing machine 70 again, and the upper screw It is conveyed by the conveyor 76 and falls onto the upper surface of the turntable 90, dispersed in the grain tank 14, and then flows down the ventilation drying unit 15.

Meanwhile, the grain is dehydrated and dried by the action of hot air in the ventilation drying unit 15.
In the grain dryer according to the embodiment of the present invention, the circulation drying is repeated until the grain stretched into the machine body 12 reaches a predetermined moisture content.

<Configuration of ventilation drying section>
Next, the structure of the ventilation drying part in the grain dryer of embodiment of this invention is demonstrated.
FIG. 1 is a side sectional view of a ventilation drying unit in a grain dryer according to an embodiment of the present invention, and FIG. 2 is a front sectional view of a ventilation drying unit in a grain dryer according to an embodiment of the present invention. -A shows a cross-sectional view.
In the grain dryer according to the embodiment of the present invention, a hot air chamber 122 is provided at the center of the ventilation drying unit 115, and the grain drying chamber 136 is formed on both sides of the hot air chamber 122 through a partition wall 118 having air permeability. A wind exhaust chamber 140 is provided on the outer side of the grain drying chamber 136 via a partition wall 116 having air permeability.

  An opening 126 is provided in the front wall of the airframe 112, and a case 142 formed with an outside air inlet 144 is disposed on the front side of the opening 126.

  In the hot air chamber 122, a non-breathable guide partition wall 129 extending toward the rear wall in a state of being fixed to the front wall of the airframe 112 and having an end 128 opened in the hot air chamber 122 is disposed. ing. The case 142 and the hot air chamber 122 communicate with each other through the opening 126 and the guide partition wall 129.

  A burner 148 is disposed in the case 142, and a cylindrical burner partition wall 149 that guides the outside air heated by the burner 148 to the guide partition wall 129 is arranged in a direction extending in parallel with the guide partition wall 129. It is installed. The burner partition wall 149 has an end portion on the guide partition wall 129 side closed, and an upper surface in the vicinity of the end portion has an opening 149A.

  An opening 152 communicating with the air exhaust chamber 40 is provided on the rear wall of the airframe, and a suction fan 154 and an air exhaust duct 156 are disposed on the rear side of the opening via a fan box 150. .

In the grain dryer according to the embodiment of the present invention, when the suction fan 154 is driven, outside air is introduced from the outside air inlet 144 into the case 142 provided on the front surface of the machine body 112.
Among them, the outside air heated by the burner 148 is guided by the burner partition wall 149 and introduced into the guide partition wall 129 from the opening 149A.
In addition, outside air that is not heated by the burner 148 is directly introduced into the guide partition wall 129 from the opening 126 provided in the front wall of the airframe 112.

The outside air heated by the burner 148 and the outside air not heated by the burner 148 are mixed in the guide partition wall 129 and introduced into the hot air chamber as hot air having a uniform temperature.
At that time, the outside air heated by the burner 148 is introduced in a direction perpendicular to the axis with respect to the inside of the guide partition 129 from the opening 149A formed in the upper surface near the end of the burner partition 149. Mixing with the outside air introduced from 126 to the inside of the guide wall 129 in a direction parallel to the axis is promoted.

  The hot air having a uniform temperature introduced into the hot air chamber 122 passes through the partition wall 118 and enters the grain drying chamber 136, and acts on the grains flowing down the grain drying chamber 136 to take away moisture. Thereafter, the hot air having a uniform temperature further passes through the partition wall 116 and flows into the exhaust chamber 140, and is exhausted from the exhaust duct 156 disposed on the rear surface side of the body 112.

  The grain dryer according to the embodiment of the present invention mixes the outside air introduced into the case 142 and heated by the burner 148 and the outside air not heated by the burner 148 in the guide partition wall 129. By introducing the hot air into the hot air chamber 122, the temperature of the hot air introduced into the ventilation drying unit 115 can be made uniform, so that the grains can be effectively dried evenly.

  In the grain dryer according to the present invention, the guide partition wall 129 mixes the outside air heated by the burner 148 and the outside air not heated by the burner 148, and uniformizes the temperature of the hot air introduced into the ventilation drying unit 115. Any length can be used.

In the grain dryer according to the present invention, the burner partition wall 149 is closed at the end on the guide partition wall 129 side, and the upper surface in the vicinity of the end has an opening 149A. The side surface of the burner partition wall 149 (partition wall surface) If so, the mixing of the outside air heated by the burner 148 and the outside air not heated by the burner 148 can be promoted regardless of the direction of opening in any direction.
The burner partition wall 149 may be open at the end on the guide partition wall 129 side.

In the grain dryer of the present invention, the guide partition 129 can be formed of a material that emits far infrared rays.
If the guide partition 129 is a partition that emits far infrared rays, the grain can be efficiently dried by the action of far infrared radiation heat.

Further, the guide partition wall 129 may be coated on the surface with a material that emits far infrared rays. Even in this case, the grain can be efficiently dried by the action of radiant heat of far infrared rays.
When the guide partition is a partition that emits far infrared rays, the effect of far infrared can be enhanced by increasing the surface area of the guide partition 129.

  It goes without saying that the present invention is not limited to the above-described embodiment, and the configuration thereof can be changed as appropriate without departing from the scope of the invention.

  The grain dryer of the present invention is extremely useful because it can effectively dry grain without any unevenness.

DESCRIPTION OF SYMBOLS 10 Grain dryer 12 Machine body 14 Grain tank 15 Ventilation drying part 16 Breathable partition 18 Breathable partition 22 Hot air chamber 26 Opening 36 Grain drying chamber 40 Exhaust chamber 42 Case 44 Outside air inlet 46 Burner case 48 Burner 50 Fan box 52 Opening 54 Suction fan 56 Exhaust duct 64 Lower screw conveyor 70 Graining machine 76 Upper screw conveyor 112 Machine body 115 Ventilation drying section 116 Breathable partition wall 118 Breathable partition wall 122 Hot air chamber 126 Opening 128 End portion 129 Guide partition wall 136 Grain drying chamber 140 Air chamber 142 Case 144 Outside air inlet 148 Burner 149 Burner partition wall 149A Opening 150 Fan box 152 Opening 154 Suction fan 156 Exhaust duct

Claims (3)

A grain dryer having a machine body having a grain storage part at the upper part and a ventilation drying part at the lower part, wherein the grain flowing down from the grain storage part is ventilated and dried in the ventilation drying part, wherein outside air is introduced into one side of the machine body A case formed with a mouth is provided and a burner is provided, and an exhaust fan is provided on the other side of the machine body. The ventilation drying unit includes a hot air chamber communicating with the case, A drying chamber provided on the side of the hot air chamber via an air-permeable partition and the grain flows down, and an exhaust air provided on the side of the drying chamber via an air-permeable partition and communicated with the exhaust fan A grain dryer comprising a chamber,
In the hot air chamber, a partition that guides outside air introduced into the case to the hot air chamber, extending from one side of the machine body to the other side and opening in the hot air chamber. In the case, a burner partition that guides outside air heated by the burner to the guide partition is disposed in the case,
A grain dryer, wherein the outside air heated by the burner and the other outside air are mixed in the guide partition and introduced into the hot air chamber.   The grain dryer according to claim 1, wherein the burner partition has a cylindrical shape, and a side surface is opened in the guide partition.   The grain dryer according to claim 1 or 2, wherein the guide partition is a partition that radiates far infrared rays.

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