JPH083399B2 - Combustion device of grain dryer - Google Patents

Description

TECHNICAL FIELD The present invention relates to a combustion device for a grain dryer.

2. Description of the Related Art Conventionally, in a grain dryer in which hot air is blown from a hot air chamber to a drying chamber and dried by ventilation, a burner case communicating with the front end of the hot air chamber is provided, and hot air is sent into the burner case. A burner is provided, and outside air is passed around the burner, and the outside air and hot air are mixed to form hot air for drying. The hot air for drying exposes the grains flowing down in the drying chamber to dry. There was a combustion device.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention Hot air generated from a burner and outside air passing around the burner are mixed to form hot air for drying, and the hot air for drying passes from the hot air chamber across the drying chamber to dry the air. The grains flowing down in the room are exposed to the hot air for drying and dried.

When the air volume of the outside air passing around the burner fluctuates significantly during the combustion of the burner, the combustion state of the burner fluctuates, resulting in a red-fire combustion state or a misfire.

Further, the burner itself is placed vertically with respect to the dryer main body, in other words, since the longitudinal direction of the burner was attached to the front end of the dryer so that the longitudinal direction of the burner was along the front-rear direction of the dryer, the burner was installed at the front end of the dryer. However, there is a drawback in that the length of the dryer main body is increased by the amount of protrusion.

Means for Solving the Problems The present invention has been proposed in view of the above-mentioned problems, and therefore, the following technical means has been taken.

That is, in a grain dryer for drying air by passing hot air from the hot air chamber 3 to the drying chamber 2 while letting the grains flow from the upper storage chamber 1 to the lower drying chamber 2, the front end of the hot air chamber 3 is dried. A hot-air passage chamber 4 is provided in communication with the hot-air passage chamber 4, and a burner 5 for sending hot air is arranged laterally in the front side portion of the hot-air passage chamber 4, and left and right outer portions of the dryer near the burner 5 are provided. Is provided with an intake port 6 communicating with the hot air passage chamber 4 so as to suck the outside air, and a part of the outside air sucked from the intake port 6 is guided to the burner 5. Combustion device configuration.

The hot air generated from the burner 5 is sent into the hot air passage chamber 4, and the outside air wind is sucked through the intake ports 6 on the left and right sides of the hot air passage chamber 4, and the outside air wind and the hot air flow into the hot air passage chamber 4
It is mixed inside to become hot air for drying.

At this time, part of the outside air taken in through the intake port 6 is taken into the burner 5 as combustion air.

And the grain flowing down from the storage chamber 1 into the drying chamber 2 is
It is exposed to hot air for drying and dried.

EFFECTS OF THE INVENTION Since the present invention is configured as described above, it has the following technical effects.

That is, since the outside air is introduced into the burner 5 through the intake ports 6 provided on the left and right outer sides of the dryer main body, the air guide path to the burner is shortened, and therefore the manufacturing cost is reduced. You can

Moreover, since the sucked outside air does not pass around the burner 5, even if the amount of sucked outside air changes, the combustion state of the burner 5 is not affected, and the burner 5 is in a stable state. Burns at.

Furthermore, since the burner 5 is disposed on the front side of the dryer in the left-right lateral direction, the overall length of the dryer does not become long and the overall structure of the dryer can be made compact.

Example In addition, a figure example demonstrates the burner (5) of the combustion apparatus used for a grain dryer (7).

The machine wall (8) of the dryer (7) is composed of front and rear wall plates and left and right wall plates, and is formed in a rectangular shape long in the front-rear direction. A box-shaped hot air passage chamber (4) is provided outside the front wall plate. And a configuration in which an operating device (9) for starting and stopping the dryer (7) is provided, and an exhaust fan (10) and a motor (11) are provided outside the rear wall plate. The left and right lateral wall plates of the hot air passage chamber (4) are provided with intake ports (6) for sucking outside air, and the front wall plate is for blowing hot air generated from the burner (5). (12) Intake port (19) for inhaling outside air and outside air inhaled from the intake port (6) near the intake port (16) is inhaled into the burner (5) as combustion air to the burner (5) Which is provided with an intake port (20) for generating the air from the intake port (6) and the intake port (19) and the burner (5) That the hot air and has a configuration that is mixed with heat air passage chamber (4) in a dry hot air.

The burner (5) is configured to be held by a mounting plate (22) in a box-shaped burner case (21) detachably provided on the front side of the hot air passage chamber (4). A filter case (24) in which an air filter (23) is detachably mounted is provided on the outside, and a filter case cover (25) is detachably provided on the outside of the filter case (24). (2
4) The outer peripheral opening (26) communicates with the intake port (20),
The outside air sucked from the intake port (20) is filtered by the air filter (23) and supplied to the burner (5) to become combustion air.

On the side of the filter case (24), there is provided a blower tube (27) having a central portion opened for blowing combustion air, and on the side of the blower tube (27), there is a combustion tube (28) having an opened central portion. A combustion board (29) is provided, and a guide tube (30) having an open tip is provided at the center of the combustion tube (27), and the air blow tube (27).
The motors (31) and (32) are installed inside the motor (31).
An intake blade (33) is provided at the shaft end to suck combustion air, and a diffusion tube (34) is provided at the shaft end of the motor (32).
And the scatterer (35) are fixed to the combustion cylinder (2
8) Ignition heater (36) and flame sensor (3
7) is provided.

The fuel ejected from the combustion nozzle (38) is the scatterer (3
5) The structure is such that it is supplied to the outer peripheral surface part and is rotationally scattered to the inner wall part of the diffusion tube (34), and the diffusion tube (34) and the combustion disc (2
A jet port (39) is formed between it and the combustion plate (2
9) is provided with an ejection hole (40), the diffusion cylinder (34) is provided with a small gap (41) through which fuel can flow out, and the vaporized fuel is formed from the ejection port (39) and the ejection hole (40). Is jetted out, and this vaporized fuel is jetted and burned to form a combustion flame and become hot air.

The fuel is a fuel pump having a fuel valve provided outside the lower plate of the burner case (21) from inside a fuel tank (42) provided at the front part of the dryer (7). The scatterer (35) is sucked from the fuel tank (42) by the fuel pump, passes through the fuel nozzle (38), etc.
It is configured to be jetted and supplied to the outer peripheral surface portion.

The burner case (21) is rotatably attached to the front wall plate of the hot air passage chamber (4). The burner case (21) is made to project outward in a plan view toward the hot air discharge side in the burner case (21). A guide plate (44) is fixedly provided to the front wall plate of the hot air passage chamber (4), and hot air generated from the burner (5) is converted from a horizontal direction to a vertical direction while the hot air blowing port ( 12) is configured so as to be smoothly fed into the hot air passage chamber (4), and the vent holes (43) are formed in the horizontal wall plate and the front wall plate on the hot air discharge side of the burner case (21). ) Is provided, and the outside air sucked from each of the ventilation holes (43) is
9) is sucked into the hot air passage chamber (4), and the guide plate (44) is cooled by sucking the outside air.

A grain collecting gutter (13) equipped with a transfer spiral is provided in the central part of the lower part of the machine wall (8), and a feeding valve (14) is axially mounted on the upper part of the grain collecting gutter (13). 4 dry drying chambers (2) are arranged side by side to communicate with each other, and a hot air chamber (3) is formed between the outer drying chamber (2) and the inner drying chamber (2). (3) and the hot air passage chamber (4) are communicated with each other, and each exhaust chamber (between the outside of the drying chamber (2) on the outside and the inside of the drying chamber (2) on the inside ( 15) is formed, and each of the exhaust chambers (15) and the exhaust fan (10) are communicated with each other. The motor (11) transfers the spiral in the grain collecting trough (13) and the feeding spiral. The configuration is such that the valve (14), the blower (10) and the like are rotationally driven.

The storage chamber (1) is formed on the upper side of each of the drying chambers (2), and on the upper side of the storage chamber (1), a ceiling plate (16) and a transfer gutter (17) equipped with a transfer spiral are provided. A supply port for supplying transfer grains into the storage chamber (1) is provided in the central part of the gutter (17), and a diffusion board (18) is provided below the supply port.

The grain raising machine (45) is provided in the front part of the front wall plate, and a bucket conveyor (46) belt is stretched inside between the upper and lower pulleys, and between the upper end and the transfer gutter (17) starting end. Is provided with a throwing tube (47) for communication, and a supply gutter (48) is provided between the lower end and the end of the grain collecting gutter (13) for communication. 45) A structure in which a motor (48) is provided on the upper part, and the motor (49) rotationally drives the bucket conveyor (46) belt, the transfer spiral in the transfer gutter (17), the diffusion plate (18), and the like. In addition, a motor (50) that detects the moisture content of the crushed grain at the same time as crushing and crushing the grain that falls while being conveyed to the upper part by the bucket conveyor (46) is installed in the substantially central portion in the vertical direction. This is a configuration provided with a moisture sensor (51).

 The operation of the above embodiment will be described below.

By operating the operating device (9), the dryer (7)
The burner 5) and the moisture sensor (51) are started at the same time
Etc. are started, and the ignition heater (36) of the burner (5) is energized to generate red heat, the fuel in the fuel tank (42) is sucked in by the fuel pump, and the scatterer (35) is passed through the fuel nozzle (38). Is jetted and supplied to the outer peripheral portion of the diffusion cylinder (34), and is jetted from the small gap (41) of the diffusion cylinder (34), and a part of the jetted fuel is scattered to the red-hot ignition heater (36) and automatically ignites to start combustion. To be done.

This combustion heats the diffusion tube (34), the fuel is vaporized while flowing down in the diffusion tube (34), and the vaporized fuel and the rotation of the intake vanes (33) cause combustion air to flow into the hot air passage chamber ( The air filter (23) in the filter case (24) is sucked into the filter case (24) through the opening (26) of the filter case (24) through the intake port (6) of the filter case (4). ) And is blown into the blower tube (27), the blown combustion air is guided by the guide tube (30), and the air for fuel and the vaporized fuel are diffused into the diffusion tube (34).
Flowing down the inside, jetted and combusted from the jet port (39) and the jet hole (40) to form a combustion flame, and this combustion flame becomes hot air, and this hot air flows from the hot air blowing port (12) to the hot air passage chamber (4). The outside air is sucked into the inside of the hot air passage chamber (4) from the intake port (6) of the hot air passage chamber (4), and the outside air and the hot air are mixed in the hot air passage chamber (4) to become hot air for drying. When the hot air for drying is sucked by the air exhauster (10), it is ventilated from the hot air chamber (3) to the drying chamber (2) and is sucked and exhausted to the air exhauster (10) through the air exhaust chamber (15). The grain stored in the storage chamber (1) of the dryer (7) is exposed to the hot air for drying while flowing down from the storage chamber (1) into the drying chamber (2), and is dried, and the feeding valve is provided. At (14), it is delivered to the bottom and flows down,
It is transferred and fed from the grain collecting gutter (13) through the supply gutter (48) into the grain raising machine (45) by the lower transfer spiral, and the bucket conveyor (4
At 6), it is conveyed to the upper part, and then through the throwing tube (47), the transfer gutter (1
7) is supplied to the inside of the storage gutter (17), and is transferred and supplied from the transfer gutter (17) onto the diffusion plate (18) by a transfer spiral in the transfer gutter (17), and inside the storage chamber (1) by the diffusion plate (18). When the moisture sensor (51) detects the grain moisture that is the same as the target moisture for finishing, the moisture is uniformly diffused and reduced to the final product, and then the operating device (9) automatically controls the dryer (7) to stop automatically. To do.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, and FIG.
BB enlarged sectional view of the figure, FIG. 2 is an enlarged plan sectional view of a part thereof, FIG. 3 is an overall side view of the dryer, and FIG. The drawing is a sectional view taken along the line AA of FIG. In the figure, reference numeral (1) is a storage chamber, (2) is a drying chamber, (3) is a hot air chamber, (4) is a hot air passage chamber, (5) is a burner, and (6).
Indicates the intake port.

Claims (1)

[Claims] 1. A grain drier in which hot air is passed from the hot air chamber 3 to the drying chamber 2 while flowing the grain from the upper storage chamber 1 to the lower drying chamber 2 by air flow drying.
A hot air passage chamber 4 is provided so as to communicate with the front end of the hot air passage chamber 4, and a burner 5 for sending hot air is provided in the front side portion of the hot air passage chamber 4 in the left-right lateral direction. An intake port 6 communicating with the hot air passage chamber 4 is provided on the left and right outer sides, and a part of the external air drawn from the intake port 6 is guided to the burner 5. Combustion device for grain dryer.