JP7447577B2 - grain dryer - Google Patents

Description

The present invention relates to a grain dryer that dries grains such as rice and wheat by the action of hot air and far infrared rays.

BACKGROUND ART Grain dryers equipped with far-infrared radiators are conventionally known (see, for example, Patent Documents 1 to 4).

The grain dryer includes a body having a storage section at an upper part and a drying section at a lower part, and an elevator installed on the front side of the machine body, and a hot air chamber opened at the front side of the machine body in the center of the drying section. A drying chamber is provided on both sides of the hot air chamber through a partition wall having ventilation, and a ventilation chamber opening at the rear of the body is provided further outside the drying chamber through a partition wall having ventilation. .

Further, in the grain dryer, a cylindrical far-infrared radiator is disposed inside the hot air chamber, a burner is provided at the front side of the machine body in communication with the far-infrared rays radiator, and a burner is provided at the front side of the machine body, and a burner is provided at the front side of the machine body. A suction fan and an air exhaust duct are provided on the side to communicate with the air exhaust chamber.

In the grain dryer, the grain loaded in the machine body is lifted by the elevator and then charged into the grain tank. Then, the grains put into the grain tank flow down the drying chamber, are lifted again by the elevator, and are then put into the grain tank.

On the other hand, in the grain dryer, the hot air generated by the burner is supplied into the inside from the starting end of the far-infrared radiator by driving the suction fan, and flows while heating the far-infrared radiator. The hot air is discharged from the terminal end into the hot air chamber. The hot air discharged into the hot air chamber passes through the partition wall, flows into the drying chamber, further passes through the partition wall, flows out into the air exhaust chamber, and is exhausted from the air exhaust duct. .

According to the grain dryer, grains can be efficiently dried by the action of hot air heated by the burner and far-infrared rays emitted from the far-infrared radiator.

By the way, in the case of a large grain dryer, a large burner is required to increase the amount of heat such as the maximum combustion amount. There is a problem in that new design costs for improving heat resistance and durability increase.

If multiple burners are installed at the starting end of the far-infrared radiator, there is no need to develop large burners, but it is possible to arrange multiple burners at the starting end of the far-infrared radiator with a relatively small diameter to emit hot air. In addition, even if it is possible to supply hot air by arranging multiple burners at the starting end of the far-infrared radiator, the cost of new design of the far-infrared radiator due to the increase in the amount of heat increases. problem is unavoidable.

JP2019-66176A JP2014-25640A Japanese Patent Application Publication No. 10-300347 Japanese Patent Application Publication No. 9-61055

Therefore, the present invention makes it possible to increase the amount of heat without using a large burner even in a large model, and to use an existing far-infrared radiator without developing a new far-infrared radiator. The purpose is to provide a grain dryer that can be used as is.

In order to achieve the above object, the present invention
A hot air chamber that opens on one side of the machine body, a drying chamber that is installed on the side of the hot air chamber through a partition wall that has air permeability to dry the grain, and a drying room that is installed on the side of the drying room through a partition wall that has air permeability. an air exhaust chamber that communicates with an air exhaust fan disposed outside the aircraft body,
A burner is disposed on one side of the fuselage in close proximity to the opening of the hot air chamber,
A grain dryer comprising a cylindrical far-infrared radiator having a starting end on the side where the hot air chamber opens, inside the hot air chamber,
The burners include a first burner that supplies hot air to the inside of the far-infrared radiator from an opening at the starting end, and a second burner that supplies hot air to the inside of the hot-air chamber other than the inside of the far-infrared radiator. It is characterized by being equipped with a burner.

The present invention
A grain dryer comprising a machine body having a storage section at an upper part and a drying section at a lower part, and drying grain flowing down from the storage section in the drying section,
The drying section includes a hot air chamber that opens on one side of the machine body, a drying chamber that is provided on the side of the hot air chamber through a partition wall that has ventilation and allows the grain to flow down, and a ventilation chamber on the side of the drying chamber. It is preferable to have an air exhaust chamber provided through a partition wall having an air exhaust chamber and communicating with an air exhaust fan disposed on the outside of the aircraft body.

The present invention
A first radiator in which the far-infrared radiator extends to the opposite side with the side where the hot air chamber opens as a starting end, and a side where the hot air chamber opens from the opposite end of the first radiator through a bent part. a second radiator extending to;
The first burner is disposed facing the starting end of the first radiator, and supplies hot air to the inside of the first radiator;
The second burner is disposed opposite to the terminal end of the second radiator, and supplies hot air into the hot air chamber.

The present invention
The first burner has a cylindrical first burner partition that guides the outside air while heating it, and the tip of the first burner partition is disposed within the opening of the starting end of the first radiator,
The second burner has a cylindrical second burner partition that guides the outside air while heating it, and the tip of the second burner partition is disposed at a position opposite to the terminal end of the second radiator. is preferred.

The present invention
The second burner has a cylindrical second burner partition that guides the outside air while heating it, and the second burner has a cylindrical shape such that the tip of the second burner partition and the terminal end of the second radiator face each other. It is arranged inside the connecting member of
Preferably, the connecting member has a hot air opening on a side surface located within the hot air chamber.

Moreover, the present invention
A mesh member is provided inside the connecting member between a region where the tip of the second burner partition wall is disposed and a region where the terminal end of the second radiator is disposed. It is preferable that

The present invention
A partition member is provided inside the connecting member to partition a region where the tip of the second burner partition wall is disposed and a region where the terminal end of the second radiator is disposed. is preferred.

The present invention
It is preferable that the connecting member has the hot air opening at a position vertically above the side surface.

The present invention
It is preferable that the connecting member has the hot air openings at a plurality of positions in the circumferential direction of the side surface.

The present invention
It is preferable that the second radiator is configured to have a smaller cross-sectional area in the axis-perpendicular direction than the first radiator.

In the grain dryer of the present invention, the burner includes a first burner that supplies hot air to the inside of the far-infrared radiator from an opening in the starting end, and a first burner that is located inside the hot-air chamber and inside the far-infrared radiator. In addition, since a second burner for supplying hot air is provided, the total amount of heat can be increased without using a large burner.
Further, in the grain dryer of the present invention, since the hot air generated by the second burner is supplied to the inside of the hot air chamber and other than the inside of the far-infrared radiator, the overall amount of heat is increased. However, existing far-infrared emitters can be used.
Therefore, according to the grain dryer of the present invention, even if the grain dryer is a large model, it is possible to increase the amount of heat without using a large burner. The far-infrared radiator can be used as is.

In the grain dryer of the present invention, the far-infrared radiator includes a first radiator that extends from the opening side of the hot air chamber to the opposite side, and a bent portion from the opposite end of the first radiator. and a second radiator extending toward the side where the hot air chamber opens, and the first burner is disposed opposite to the starting end of the first radiator, and the first burner is configured to radiate hot air into the inside of the first radiator. Meanwhile, the second burner is disposed facing the terminal end of the second radiator and supplies hot air into the hot air chamber, so that the hot air supplied by the second burner and The hot air supplied to the inside of the first radiator by the first burner and released from the end of the second radiator is mixed to equalize the temperature, so that the grain can be dried evenly. .

In the grain dryer of the present invention, the first burner has a cylindrical first burner partition that guides outside air while heating it, and the tip of the first burner partition has an opening at the starting end of the first radiator. The second burner has a cylindrical second burner partition that guides the outside air while heating it, and the tip of the second burner partition faces the terminal end of the second radiator. If the hot air is provided at a position where the hot air is supplied from the tip of the second burner partition, and the second radiation is supplied from the tip of the first burner partition into the inside of the first radiator, Since the hot air emitted from the end of the body is mixed and the temperature is equalized, the grain can be dried evenly.

In the grain dryer of the present invention, the second burner has a cylindrical second burner partition that guides outside air while heating it, and the tip of the second burner partition and the terminal end of the second radiator face each other. If the connecting member has a hot air opening on a side surface located in the hot air chamber, the tip of the second burner partition The hot air supplied from the second radiator and the hot air discharged from the terminal end of the second radiator are mixed inside the connecting member and are discharged into the hot air chamber from the hot air opening in a state where the temperature is uniformized. This allows grain to be dried evenly.

Further, in the grain dryer of the present invention, the inside of the connecting member has a region on a side where the tip of the second burner partition wall is disposed and a region on the side where the terminal end of the second radiator is disposed. If a mesh member is provided between the connecting member and the connecting member, the hot air supplied from the tip of the second burner partition and the hot air released from the end of the second radiator This promotes mixing with

In the grain dryer of the present invention, the inside of the connecting member includes a region on a side where the tip of the second burner partition is disposed and a region on the side where the terminal end of the second radiator is disposed. If a partition member is provided for partitioning the second burner partition, the hot air supplied from the tip of the second burner partition and the hot air discharged from the end of the second radiator can be connected to the inside of the connecting member. The liquid collides with the partition member and is stirred to equalize the temperature.

In the grain dryer of the present invention, if the connecting member has the hot air opening at a position vertically above the side surface, the hot air discharged from the hot air opening is connected to the connecting member in the hot air chamber. The grains are moved to the drying chamber located on the side of the hot air chamber while going around to the side, and it is possible to prevent the generation of damaged grains such as shell cracking due to the high temperature hot air directly hitting the grains in the drying chamber. can.

In the grain dryer of the present invention, if the connecting member has the hot air openings at a plurality of positions in the circumferential direction of the side surface, the hot air discharged from the hot air openings is distributed substantially evenly within the hot air chamber. Since the grains are moved to the drying chamber in a spread state, the grains can be efficiently dried.

In the grain dryer of the present invention, if the second radiator is configured to have a smaller cross-sectional area in the direction perpendicular to the axis than the first radiator, the terminal end of the second radiator Hot air will be emitted from the section in a state close to a jet stream, but if the tip of the second burner partition is disposed at a position opposite to the terminal end of the second radiator, then the The hot air emitted from the end of the second radiator collides with the hot air supplied from the tip of the second burner partition and mixes, thereby making the temperature uniform.

Front sectional view of a grain dryer. FIG. 3 is a side cross-sectional view of the ventilation drying section. FIG. 3 is a side sectional view of another example of the ventilation drying section.

Embodiments of the present invention will be described based on the drawings.
FIG. 1 shows a front sectional view of a grain dryer.
A grain dryer 1 according to an embodiment of the present invention includes a machine body 11 having a grain storage section 2 in the upper part and a ventilation drying part 3 in the lower part, and a grain lifting machine 12 installed upright on the front side of the machine body 11.

A hot air chamber 4 with an opening at the front side of the body 11 is provided in the center of the ventilation drying section 3, and a pair of drying chambers are provided on both sides of the hot air chamber 4 through first partition walls (porous walls) 31 having air permeability. Further outside of the chamber 5 and the drying chamber 5, a pair of exhaust chambers 6 are provided which are open at the rear of the body 11 via a second partition wall (porous wall) 32 having air permeability.

A cylindrical far-infrared radiator 7 is disposed inside the hot air chamber 4, a burner is provided on the front side of the body 11 in communication with the hot air chamber 4, and a burner is provided on the rear side of the body 1. communicates with the ventilation chamber 6, and is provided with a ventilation device such as a suction fan and a ventilation duct.

A rotary valve 13 is disposed below the ventilation drying section 3, and a lower screw conveyor 14 connected to the lower part of the grain lifting machine 12 is disposed below the rotary valve 13. Further, an upper screw conveyor 15 connected to the upper part of the grain lifting machine 12 is arranged above the grain storage section 2, and a rotary plate 16 is arranged below the rear end of the upper screw conveyor 15. Ru.

In the grain dryer 1, the grain loaded into the machine body 11 is fried by the grain lifting machine 12, conveyed by the upper screw conveyor 15, and dropped onto the upper surface of the rotary disk 16, and then transferred to the grain storage section. It is evenly distributed and thrown into 2.

The grains loaded into the grain storage section 2 flow down through each drying chamber 5 in the ventilation drying section 3, are discharged downward from the rotary valve 13, and are conveyed toward the front side of the machine body 11 by the lower screw conveyor 14. The grains are then fried again by the grain lifting machine 12, put into the grain storage section 2, and circulated through the grain dryer 1.

On the other hand, in the grain dryer 1, hot air heated and generated by the burner is supplied from the starting end of the far-infrared radiator 7 to the inside of the far-infrared radiator 7 by driving the suction fan. It flows while heating the infrared radiator 7 and is emitted into the hot air chamber 4 from the terminal end. The hot air discharged into the hot air chamber 4 passes through the first partition 31 and flows into the drying chamber 5, and further passes through the second partition 32 and flows out into the exhaust chamber 6. The air is then exhausted from the air exhaust duct to the outside of the machine.

FIG. 2 shows a side sectional view of the ventilation drying section of the grain dryer of FIG. 1.
In the example shown in FIG. 2, the far-infrared radiator 7 includes a main cylinder (first radiator) 7A that extends from the opening side of the hot air chamber 4 to the opposite side, and an end opposite to the main cylinder 7A. It has an auxiliary cylinder (second radiator) 7B that extends from the part through the bent part to the side where the hot air chamber 4 opens. In order to efficiently heat the main cylinder 7A by increasing the residence time of the hot air, the far-infrared radiator 7 is configured so that the sub-cylinder 7B has a smaller cross-sectional area in the direction perpendicular to the axis than the main cylinder 7A. It is composed of

The burners 8 include a main burner (first burner) 8A disposed facing the starting end of the main cylinder 7A, and an auxiliary burner (second burner) disposed facing the terminal end of the sub cylinder 7B. burner) 8B.

The main burner 8A has a cylindrical main combustion furnace (first burner partition wall) 81A that heats and guides outside air, and the tip of the main combustion furnace 81A is inside the opening at the starting end of the main cylinder 7A. will be placed.
Further, the auxiliary burner 8B has a cylindrical auxiliary combustion furnace (second burner partition wall) 81B that guides outside air while heating it, and the tip of the auxiliary combustion furnace 81B faces the terminal end of the auxiliary cylinder 7B. It is placed in a position where

In the grain dryer 1, the auxiliary burner 8B is disposed at a position where the tip of the auxiliary combustion furnace 81B faces the terminal end of the auxiliary cylinder 7B in the far-infrared radiator 7. 8B, the hot air supplied from the front end surface of the auxiliary combustion furnace 81B and the hot air discharged from the end of the auxiliary cylinder 7B are mixed inside the hot air chamber 4 to equalize the temperature, and the drying chamber 5 Grain can be dried evenly.

In an embodiment of the present invention, the grain dryer 1 supplies the hot air generated by the auxiliary burner 8B into the hot air chamber 4 to supplement the hot air generated by the main burner 8A. Therefore, the overall amount of heat can be increased without using a large burner.
In addition, the grain dryer 1 supplies the hot air generated by the auxiliary burner 8B to the inside of the hot air chamber 4 other than the inside of the far-infrared radiator 7, so that the overall amount of heat is increased. Even in this case, the existing far-infrared radiator 7 can be used.
Therefore, according to the grain dryer 1 according to the embodiment of the present invention, even if it is a large model, the amount of heat can be increased without using a large burner, and a new far-infrared radiator can be developed. Existing far-infrared radiators can be used as they are without having to do so.

Here, the main combustion furnace 81A and the auxiliary combustion furnace 81B may have an opening provided on the side surface of the tip portion instead of the tip surface.
If the main combustion furnace 81A has an opening on the side surface, it is possible to promote mixing of the outside air heated by the main burner 8A and other outside air inside the main cylinder 7A. Furthermore, if the auxiliary combustion furnace 81B has an opening on its side surface, it is possible to promote mixing of the outside air heated by the auxiliary burner 8B and other outside air inside the hot air chamber 4.
In addition, if the auxiliary combustion furnace 81B has an opening on the side surface, the hot air discharged from the terminal end of the second radiator collides with the front end surface of the auxiliary combustion furnace 81B and spreads around the surrounding area in a substantially uniform state. Therefore, the grains can be efficiently dried in the drying chamber 5.

In the example shown in FIG. 2, the auxiliary burner 8B is disposed at a position where the tip of the auxiliary combustion furnace 81B faces the terminal end of the auxiliary cylinder 7B; As long as hot air other than the inside of the far-infrared radiator 7 can be supplied, the tip of the auxiliary combustion furnace 81B can be disposed at another position.
Even in that case, the grain dryer 1 can increase the amount of heat without using a large burner, and can use the existing far-infrared radiator as is without developing a new far-infrared radiator. be able to.

FIG. 3 shows a side sectional view of another example of the ventilation drying section.
In the example shown in FIG. 3, a cylindrical connecting member 9 whose both ends are open is provided on the side where the hot air chamber 4 opens, and the leading end of the auxiliary combustion furnace 81B and the terminal end of the auxiliary cylinder 7B are connected to the connecting member 9. They are arranged so as to be in a positional relationship facing each other inside the cell 9.

A hot air opening 91 is provided on the side surface of the connecting member 9 at a vertically upper position in the hot air chamber 4, and the hot air is supplied from the tip of the auxiliary combustion furnace 81B and is discharged from the terminal end of the auxiliary cylinder 7B. The heated air collides and mixes inside the connecting member 9, and is discharged from the hot air opening 91 into the hot air chamber 4 with a uniform temperature. It can be dried evenly.

Further, since the hot air opening 91 is provided on the side surface of the connecting member 9 at a position vertically above the hot air chamber 4, the hot air discharged from the hot air opening 91 can flow inside the hot air chamber 4 into the connection. Grains that have suffered damage such as shell cracking due to the high-temperature hot air directly hitting the grains flowing down the drying chamber 5 as they go around the sides of the member 9 and move to the drying chamber 5 provided on both sides of the hot air chamber 4. can be prevented from occurring.

Inside the connecting member 9, the hot air opening 91 is provided between a region where the tip of the auxiliary combustion furnace 81B is disposed and a region where the terminal end of the auxiliary cylinder 7B is disposed. A mesh member can be provided at the position where the mesh member is located.
If the connecting member 9 has the mesh member, the hot air supplied from the tip of the auxiliary combustion furnace 81B and the hot air released from the terminal end of the auxiliary cylinder 7B can be mixed inside the connecting member 9. mixing is promoted.

On the side surface of the connecting member 9, the hot air openings 91 may be provided radially at a plurality of positions in the circumferential direction.
If the connecting member 9 has a plurality of hot air openings 91 in the circumferential direction of the side surface, the hot air released from the hot air openings 91 spreads substantially evenly within the hot air chamber 4 during the drying process. Since the grains are moved to the drying chamber 5, the grains can be efficiently dried in the drying chamber 5.

The connecting member 9 may be provided with a partition member that separates a region where the tip of the auxiliary combustion furnace 81B is disposed and a region where the terminal end of the auxiliary cylinder 7B is disposed without communicating with each other.
If the connecting member 9 has the partition member, the hot air supplied from the tip of the auxiliary combustion furnace 81B and the hot air discharged from the terminal end of the auxiliary cylinder 7B are respectively inside the connecting member 9. In each area, the liquid collides with the partition member and is stirred, thereby making the temperature uniform.
In that case, a hot air opening common to each region can be provided on the side surface of the connecting member 9. Further, on the side surface of the connecting member 9, hot air openings may be provided individually in each of the regions. If a hot air opening common to each region is provided on the side surface of the connecting member 9, the hot air in each region is mixed and discharged from the hot air opening.

In the case of the example shown in FIG. 3 as well, the grain dryer 1 can increase the amount of heat without using a large burner, and can use the existing far-infrared radiator without developing a new far-infrared radiator. You can use your body as is.

In the above embodiment of the present invention, the grain dryer 1 includes a body 11 having a grain storage section 2 at the top and a ventilation drying section 3 at the bottom, and a grain lifting machine 12 erected on the front side of the machine body 11. Although this example has been taken as an example, the present invention can also be applied to other types of grain dryers that include a far-infrared radiator inside a hot air chamber, such as one that includes a body having only a drying section.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and the configuration can be changed as appropriate without departing from the scope of the invention.

Even if the grain dryer of the present invention is a large model, it is possible to increase the amount of heat without using a large burner. It is extremely useful because the body can be used as is.

1 Grain dryer 11 Body 12 Grain lifter 13 Rotary valve 14 Lower screw conveyor 15 Upper screw conveyor 16 Rotary disk 2 Grain storage section 3 Ventilation drying section 31 First partition wall (porous wall)
32 Second partition wall (porous wall)
4 Hot air chamber 5 Drying chamber 6 Exhaust chamber 7 Far-infrared radiator 7A Main cylinder (first radiator)
7B Secondary tube (second radiator)
8 Burner 8A Main burner (first burner)
81A Main combustion furnace (first burner partition)
8B Auxiliary burner (second burner)
81B Auxiliary combustion furnace (second burner partition)
9 Connection member 91 Hot air opening

Claims (6)

A hot air chamber that opens on one side of the fuselage, a drying chamber that is provided on the side of the hot air chamber through a breathable bulkhead, and a drying chamber that is provided on the side of the drying chamber through a breathable bulkhead that opens on the side of the fuselage. It has an exhaust chamber that communicates with an exhaust fan installed on the outside,
A burner is disposed on one side of the fuselage in close proximity to the opening of the hot air chamber,
A grain dryer comprising a cylindrical far-infrared radiator having a starting end on the side where the hot air chamber opens, inside the hot air chamber,
The burners include a first burner that supplies hot air to the inside of the far-infrared radiator from an opening at the starting end, and a second burner that supplies hot air to the inside of the hot-air chamber other than the inside of the far-infrared radiator. Equipped with a burner ,
The far-infrared radiator includes a first radiator that extends to the opposite side from the side where the hot air chamber opens as a starting end, and a side where the hot air chamber opens from the opposite end of the first radiator through a bent part. a second radiator extending to;
The first burner is disposed facing the starting end of the first radiator, and supplies hot air to the inside of the first radiator;
The grain dryer is characterized in that the second burner is disposed opposite to the terminal end of the second radiator and supplies hot air into the hot air chamber . The first burner has a cylindrical first burner partition that guides the outside air while heating it, and the tip of the first burner partition is disposed within the opening of the starting end of the first radiator,
The second burner has a cylindrical second burner partition that guides the outside air while heating it, and the tip of the second burner partition is disposed at a position opposite to the terminal end of the second radiator. The grain dryer according to item 1. The second burner has a cylindrical second burner partition that guides the outside air while heating it, and the second burner has a cylindrical shape such that the tip of the second burner partition and the terminal end of the second radiator face each other. It is arranged inside the connecting member of
The grain dryer according to claim 1 or 2, wherein the connecting member has a hot air opening on a side surface located within the hot air chamber. 2. A partition member is provided inside the connecting member to partition a region where the tip of the second burner partition wall is disposed and a region where the terminal end of the second radiator is disposed. The grain dryer according to 3. The grain dryer according to claim 3 or 4, wherein the connecting member has the hot air opening at a position vertically above the side surface. The grain dryer according to claim 3 or 4, wherein the connecting member has the hot air openings at a plurality of positions in the circumferential direction of the side surface.

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