JPH02302579A - Drier for grain drying machine - Google Patents

Abstract

PURPOSE:To set the drying speed of cereals in drying machines communicating with each other to substantially the same, and to enhance the efficiency of fuel of the machine of the other side by controlling the temperature of hot blast generated from the burner of the machine of the other side according to air flow rate to be blown to the machine the other side. CONSTITUTION:Cereals of a drying machine 2 of the other side are exposed with both drying air fed through a drying machine 2 of one side to be ventilated from a communication unit to the machine 2 of the other side and hot blast drying air of a predetermined temperature generated from the burner 3 of the other side to be dried. The humidity of waste air in an waste air chamber 24 of drying air ventilated through the drying chamber 20 of the machine 2 of one side is detected by a waste air humidity sensor 25 during the drying operation, the air flow rate of the waste air blown into the machine 2 of the other side is controlled according to the detected waste air humidity, the temperature of the hot blast generated from the burner 3 of the machine 2 of the other side is controlled according to the air flow rate, and the cereals in the machine 2 of the other side is dried with the controlled hot blast and the blown waste air.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a drying device for a grain dryer.

BACKGROUND ART Conventionally, in a plurality of grain dryers that receive hot air from a burner to dry the grains, the drying air is passed through one of the dryers and communicated with the other dryer so that the grain is dried. The drying device was such that the amount of drying air blown from the communication portion was constant, and the temperature of the hot air from the burner on the other side of the dryer was controlled to be constant.

Problems to be Solved by the Invention Grain is stored in a plurality of grain driers, and while the grains are repeatedly circulated within each of the driers, the grains in one of the driers are stored in a predetermined amount generated from a burner. The grains in the dryer on the other side are dried by being exposed to hot drying air at a high temperature, and the drying air that has passed through the dryer on one side is passed through the communication part to the dryer on the other side, and the drying air is and drying air of constant temperature hot air generated from the burner on the other side.

During this drying, the drying air that has passed through the dryer on one side is ventilated from the communication part to the dryer on the other side, so even if the humidity of this drying air is high, the drying air on the other side Because the temperature of the hot air generated from the burner is constant, the drying speed of the grains in the dryer on the other side may be significantly lower than the drying speed of the grains in the dryer on the one side. Furthermore, even when the humidity of the drying air is low, a certain amount of air is used and the remaining air is discharged outside the machine, resulting in fuel loss.

Means for Solving the Problems This invention provides a method for drying grains through a plurality of grain driers (2) that dry grains by receiving hot air from a burner (1). The air is passed through the other dryer (2) for drying, and the burner (3) on the other dryer It (2) side is connected in accordance with the amount of drying air blown from this communication part. The drying device has a structure in which the temperature is controlled in conjunction with J'l.

Effect of the Invention Grain is stored in a plurality of grain driers (2), and while the grain is repeatedly circulated in each of the driers (2), the grains in one of the driers (2) are The grains in the dryer (2) on the other side are exposed to the drying hot air at a predetermined temperature generated from the burner (1), and the grains in the dryer (2) on the - side are exposed to the drying air that has passed through the dryer (2) on the side. Ventilation is carried out from the communication part to the dryer (2) on the other side,
It is dried by being exposed to both this drying air and hot drying air at a predetermined temperature generated from the burner (3) on the other side.

During this drying, the amount of drying air blown through the dryer (2) on one side to the dryer (2) on the other side is determined by the humidity of the drying air, for example, when the drying air is low in humidity. ,
This drying air is used for multiple purposes, and at this time, the temperature of the hot air generated from the burner (3) on the other side is controlled to a low temperature to dry the grains. In this case, the temperature of the hot air generated from the burner (3) is controlled to an intermediate temperature to dry the grains, and it is not used in the case of high humidity dry air, in which case the hot air generated from the burner (3) is Humidity is controlled at high temperatures to dry the grains.

Effects of the Invention According to this invention, the drying air passed through the grain dryer (2) on one side is ventilated to the grain dryer IN (2) on the other side, and the air is blown to this dryer (2) on the other side. The temperature of the hot air generated from the burner (3) of the dryer (2) on the other side is controlled by the amount of drying air blown, so that the drying speed of the grains in each dryer (2) is approximately In addition, the fuel efficiency of the dryer (2) on the other side can be improved.

Embodiment In the illustrated example, (2) is each grain dryer, and the Ia wall (4) of this dryer (2) on one side is rectangular in the front and back direction, and the front and rear wall plates and the left and right wall plates are A burner case (6) containing an operating device (5) for starting and stopping the dryer 411 (2) and a burner (1) is installed on this front wall plate, and a lower plate of this burner case (6) is installed. A fuel pump (7) with a fuel valve is provided on the outside, and the fuel tank (7) is opened and closed by opening and closing the fuel valve.
8) and supplies it to the burner (1).A blower (9) and a variable speed blower motor (lO) are provided on the outside of the upper plate, and the rotation of this blower motor (lO) is The blower (9) is rotationally driven to supply combustion air commensurate with the amount of fuel to be supplied to the burner (1). )
The exhaust fan motor (12), which rotates the valve motor (12), and the valve motor (
13) and a speed reduction mechanism (14).

At the tip of the exhaust fan (11), the exhaust air sucked and exhausted by the exhaust fan (11) is passed through the air duct chamber (16) by operating a rotatable switching valve (15), and the other side is installed at the rear side. The dryer (
2) and an exhaust duct chamber (17) for discharging the air outside the machine, and the switching valve (15) is connected to a solenoid (37).
) is configured to be in a fully open state, a half open state, and a fully closed state by the operation of the switch valve (15), and when the switching valve (15) is fully open, all of the drying air that has passed through the dryer a (2) on one side is directed to the air duct room. (
16) and into the drying m (2) on the other side, and in the half-open state, the drying fi (2) on one side
Half of the ventilated drying air is blown into the dryer (2) on the other side through the air duct chamber (18), and half is exhausted outside the machine through the air exhaust duct chamber (17). In addition, when the dryer (2) on one side is in a fully closed state, all of the drying air that has passed through the dryer (2) on one side is exhausted to the outside of the machine via the air exhaust duct chamber (17). (1B) contains a burner case (3) that blows hot air into the dryer (2) on the other side.
18), and this burner case (1 day)
Like the burner case (6), the burner (3) has the fuel valve, the fuel pump (7), the blower (9), the blower motor (lO), etc. It has a configuration in which it communicates with the dryer (2) on the other side via an air duct room (16).

A grain collection gutter (19) is provided in the center of the lower part of the mechanism (4) in the front-rear direction and has a transfer spiral inside.
3) On the upper side, drying chambers (20) formed between ventilation networks are arranged in parallel and communicated with each other, and in the lower part of each drying chamber (20), a feeding valve (21) for feeding and flowing grains is installed. A hot air chamber (22) is formed between the inner sides of each drying chamber (2) and communicated with the burner (1).
) is provided with a hot air temperature sensor (23) for detecting the hot air humidity in the hot air chamber (22), and an exhaust chamber (24) is formed outside each drying chamber (20). It is configured to communicate with the exhaust fan (11), and this exhaust chamber (24)
is equipped with an exhaust air humidity sensor (25) that detects the humidity of the exhaust air in the exhaust chamber (24), and the valve motor (13) operates the delivery valve via the deceleration mechanism (14). (21) is configured to rotate.

A storage chamber (2B) is formed above each of the drying chambers (20) and is communicated with the storage chamber (2B), and a ceiling plate (27) is formed above the storage chamber (26).
A transfer gutter (28) equipped with a transfer spiral is provided in the center of the transfer gutter (2B), and the transferred grain is transferred to the storage chamber (26).
A diffusion plate (2) is provided below the supply port to uniformly diffuse and return grains into the storage chamber (28).
9).

The grain raising machine (30) is installed in the front part of the front wall plate, and inside the packet conveyor (31) belt is stretched between the upper and lower pulleys, and between the upper end and the starting end of the transfer gutter (28). A discharging tube (32) is provided to communicate with the lower end and the grain collection gutter (19).
) A supply gutter (33) is provided between the grain raising machine (30) and the terminal end for communication, and a grain raising machine motor (34) is provided on the upper part of this grain raising machine (30). ), the packet conveyor (31) belt, the transfer spiral in the transfer gutter (2B), the spreading plate (29) and the packet conveyor (
31) It is configured to rotationally drive the transfer spiral etc. in the grain collecting trough (19) via a belt, and in the vertical direction, approximately in the center, there are grains that fall while being transported to the upper part by the packet conveyor (31). A moisture sensor (35) is provided to receive the grains, crush the grains under pressure, and at the same time detect moisture in the crushed grains.Each part of this moisture sensor (35) is connected to a moisture motor (36) provided inside. It is configured to be rotated by.

The dryer (2) on the other-power side has the air duct chamber (t
e) the burner (3) in the burner case (18) provided in the burner case (18);
) is blown into the dryer (2) on the other side through this air duct chamber (16), and the hot air generated from the air duct chamber (1B) at the tip of the exhaust fan (11) at the rear of 2 ), the same configuration as the dryer (2) on one side described above, except that it does not include the exhaust air humidity sensor (25) of the air exhaust path room (17) and the air exhaust room (24). It is.

The operating device a (5) is in the shape of a box, and on the surface plate of this box there are a start switch (38) for starting and stopping the drying a (2) for each operation of loading, drying and discharging. A stop switch 7,000 (39), each temperature setting knob (40) in which the temperature of the hot air generated from the burner (1) is set depending on the operating position, and a moisture setting knob (41) in which the target finishing moisture is set depending on the operating position. ), the moisture sensor (35)
A display window (42) and a monitor display are provided to alternately display the grain moisture detected by the grain moisture, the hot air temperature detected by the hot air temperature sensor (23), the remaining drying time, etc., and a drying control device (43) inside. And combustion control equipment? 1 (44), each setting knob (40), (40), (41) is a rotary switch type, and a predetermined value is set depending on the operating position. The operating device (5) is of articulated configuration.

The combustion control device (44) includes the hot air temperature sensor (23
) and the detected value detected by the exhaust air humidity sensor (25).
An A-D converter (45) that performs D conversion, and an input circuit (4) into which the converted value converted by the A-D converter (45) is input.
111), an input circuit (47) into which the operation of each temperature setting knob (40), (40) is input, each of these input circuits (
A CPU (48) that performs logical operations and comparison operations on various input values input from 4B) and (47), and an output circuit (48) that receives various commands from this CPU (48) and outputs them. ), and this output circuit (49) controls the fuel bomb (7), the blower motor (10), the solenoid (37), etc.

The drying control device (43) includes the moisture sensor (35)
an A-D converter that A-D converts the detection value detected by the A-D converter, an input circuit to which the conversion A1 converted by the A-D converter is input, each of the switches (38) and (39), and the moisture content. an input circuit into which the setting input (41) operation is input; a CPU (48) which performs arithmetic and logical operations and comparison operations on various input values input from these input circuits;
The configuration includes an output circuit that receives various commands from (48) and outputs them. It is configured to start the fuel pump (7) and the like.

Combustion control by the combustion control device (40) is performed as follows, and when each temperature setting knob (40) is operated, this operation is input to the CPU (48) and the hot air temperature is set. The hot air temperature generated from the burners (2) and (3) is detected by the hot air temperature sensor (23), and this detected hot air temperature is input to the CPU (48),
The detected hot air temperature and the set hot air temperature are compared, and if they are different, the number of times the fuel valve is opened and closed is controlled by the CPU (48) so that the temperature becomes the same as the set hot air temperature,
This configuration is such that the amount of fuel sucked by the fuel pump (7) is controlled.

Further, the humidity of the exhaust air in the exhaust chamber (24) that is ventilated through the drying chamber (20) of the dryer (2) on one side is detected by the exhaust air humidity sensor (25), and the detected exhaust air Humidity is input to the CPU (48), and this detected exhaust air humidity and this C
The exhaust air humidity set and stored in the PU (48) is compared, and if the detected exhaust air humidity is, for example, 70% or less, the solenoid (37) is fully activated and the switching valve (15) is
At the same time, operate this solenoid (37
) of the dryer (2) on the other side.
5) is input to the CPU (48), and based on this input, the set hot air temperature of the burner (3), which was set by operating the temperature setting knobs (40), is controlled to decrease by 70% to produce low temperature hot air. The fuel valve and the fuel pump (7) are controlled by the CPU (48) so that the temperature is maintained, and if the detected exhaust air humidity is between 70% and 85%,
At the same time when the solenoid (37) operates to operate the switching valve (15) to a half-open state, the solenoid (37)
The operation is input to the CPU (48) of the operating device (5) of the dryer (2) on the other side, and based on this input, the temperature setting knobs (40) are operated to set the burner ( 3
The fuel valve and the fuel pump (7) are controlled such that the set hot air temperature of the
) is controlled by this CPU (48), and if the detected exhaust air humidity is 85% or more, the solenoid (37)
is not activated, and the switching valve (15) is kept fully open, and at the same time, the inactivation of this solenoid (37) causes the operation device (5) of the dryer (2) on the other side to operate. CPU(
48), and with this input, the hot air temperature set by operating each temperature setting withdrawal (40) is input to the burner (3).
The fuel pulse and the fuel pump (7) are controlled by the CPU (48) so that the fuel pulse and the fuel pump (7) are generated from the CPU (48).

The drying control by the drying control device (43) is performed as described below, and when the moisture setting sprinkler (41) is operated, this operation is input to the CPU (4B) and the finishing target moisture is set. , the grain moisture detected by the moisture sensor (35) is input to the CPU (48), the detected grain moisture is compared with the set finishing target moisture, and the detected grain moisture is the same as the set finishing target moisture. Then, this CPt
At J (4B), the dryer (2) is automatically stopped and the drying of the grains is stopped.

Hereinafter, the operation of the above embodiment will be explained.

Each setting of each operating device (5) (40), (40),
(41) to a predetermined position and each start switch (38) to start the drying operation, each part of each grain dryer (2), burners (1), (3) and each moisture The sensor (35) etc. starts, and this burner (1), (3)
Hot air is generated, and this hot drying air crosses the drying room (20) from the hot air chamber (22), passes through the ventilation chamber (24), and is sucked and exhausted by the exhaust fan (9). Drying 4
! The grains stored in the storage chamber (26) of 1(2) are exposed to this drying wind while flowing down from the storage chamber (2B) into the drying chamber (20) and are dried. ), the grain is fed to the lower part, flows down, and is supplied into the collection gutter (19), from which the grain is passed through the supply gutter (33), and then sent to the grain hoist (3).
0) by the lower transfer spiral, transported to the upper part by the packet conveyor (31), passed through the discharge tm (32), and supplied into the transfer gutter (28), and from this transfer gutter (2B) to the spreading plate. (29), f: is transferred and supplied by the upper transfer spiral, is evenly diffused and reduced into the storage chamber (26) by this diffusion plate (29), and is circulated and dried so that the moisture sensor (35) detects the moisture content. When grain moisture equal to the finishing target moisture set by operating the setting knob (41) is detected, the drying control device (43) of the operating device 21 (5) automatically controls the dryer (2). Automatically stop.

During this drying work, the exhaust air humidity in the exhaust chamber (24) of the dry air that has passed through the drying chamber (20) of the dryer (2) is detected by the exhaust air humidity sensor (25). The detected exhaust air humidity controls the amount of air blown into the dryer (2) on the other side, and the amount of air blows into the burner (3) of the dryer (2) on the other side. ) is controlled, and the grains in the dryer (2) on the other side are dried by the controlled hot air temperature and the blown exhaust air.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a block diagram, Fig. 2 is a partially cutaway side view of the overall installation of the grain dryer, and Fig. 3 is A-A in Fig. 2. A sectional view, FIG. 4 is a BB sectional view of FIG. 2, and FIG. 5 is a rear view of a part of the grain dryer.
Figure fjIJ6 is a partially cutaway front view of a part of the grain dryer.

Claims (1)

[Claims] A plurality of grain dryers (2) receive hot air from a burner (1) to dry the grains, and the drying air is passed through one of the dryers (2) to the other dryer (2). A drying device that communicates with the other dryer (2) to perform drying, and controls and interlocks the temperature of the burner (3) on the other side of the dryer (2) in accordance with the amount of drying air blown from this communication portion.