JPS63140282A - Cereal grain drying control system of cereal grain drier - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

Conventional Technique J・Do 1 Conventionally, while the grains stored in the storage chamber are allowed to flow down from the storage chamber into the drying chamber, hot air at a set temperature generated from a burner and outside air passing around the burner are combined. By suctioning and exhausting air with an exhaust fan, this hot air and this outside air are combined to form drying hot air, and this drying hot air is passed through the drying chamber, thereby removing the air flowing down inside the drying chamber.
? ! The grains are dried by being exposed to this drying hot air, but during this drying process, the drying hot air is displayed on the operating device that performs operations such as starting and stopping the dryer, and the drying hot air is sucked and exhausted. The exhaust fan sucks in the same amount of air from the beginning to the end of the drying process.

Problem to be Solved by the Invention While the grains in the storage chamber are allowed to flow down from the storage chamber into the drying chamber, hot air at a set temperature generated from the burner and outside air passing around the burner mix to dry the grains. This drying hot air is sucked by an exhaust fan to ventilate the drying chamber, and the grains flowing down the drying chamber are exposed to the drying hot air and dried by repeating the circulation. In a dryer that detects drying hot air and displays it on a display device, the heating capacity of the burner is 10 degrees to 45 degrees, so if the outside temperature is low and the set hot air temperature is set to a high temperature, , the temperature of the detected drying hot air may not rise to the set hot air temperature, causing anxiety for the workers performing drying work! In addition, reliability sometimes deteriorated.

Means for Solving the Problems The present invention provides an exhaust fan (3) at the lower side of a storage chamber (1) for storing grains, which controls the set temperature of hot air generated from a burner (2) while causing the grains to flow down. A drying room (4) is provided in which air is sucked and exhausted by a drying chamber (4), and an outside air temperature sensor (5) is installed to detect outside air temperature. In a grain dryer configured to vary the suction outside air 11'L, the one kernel set hot air temperature is compared with the outside air temperature detected by the outside air temperature sensor (5), and the difference in this comparison is greater than a predetermined value. -■-, and even if the maximum amount of fuel is supplied to the burner (2), the temperature of the hot air generated from the burner (2) does not reach the set hot air temperature, the set hot air temperature Until the drying process is completed, a grain drying control system is adopted, which is characterized by being equipped with an air volume control device that reduces the amount of outside air sucked and discharged by the exhaust fan (3) by a predetermined amount.

Effect of boiling 1 While the grains in the storage chamber (1) are flowing down from this storage chamber (1) into the drying chamber (4), the temperature of the hot air generated from the burner (2) and the eight 2) is mixed with the outside air passing around the room to become drying hot air, and this drying hot air is sucked by the exhaust fan (3) to ventilate the drying room (4). The grains flowing down the drying chamber (4) are exposed and dried by repeating the circulation, and the hot air for drying is detected and displayed on the father's production device.

During this drying work, the outside air temperature detected by the outside air temperature sensor (5) that detects the outside air temperature is compared with the set hot air temperature, and if the difference in the comparison is greater than a predetermined value, and the burner (2) Even if the maximum amount of fuel is supplied, if the temperature of the drying hot air generated from the burner (2) does not reach the set hot air temperature, the exhaust fan (3) sucks and exhausts the air from the burner. In order to reduce the suction volume of outside air passing around (2) by a predetermined amount, the rotation of this exhaust fan (3) is controlled to a predetermined low rotational speed by an air volume control device to reduce the suction amount of outside air. When the grains are dried and the temperature of the drying hot air becomes the same as the set hot air temperature, the rotation of the exhaust fan (3) is restored to the original rotation to dry the grains.

Effects of the Invention According to this invention, the outside air temperature sensor (
5) detects that the outside air temperature is low and the burner (2)
Even when the set hot air temperature generated from the burner (2
), if the maximum amount of fuel IJ is being supplied to The hot air generated from the burner (2) and the outside air mix to become hot air for drying.This hot air for drying rises, and the temperature of this hot air for drying becomes the same as the set hot air temperature. This eliminates anxiety among workers and improves reliability.

Embodiment In the illustrated example, the machine wall (7) of the dryer (6) has a rectangular shape in plan view that is long in the front and back direction, and is made up of front and rear wall plates and left and right wall plates. 6) An operating device (8) for starting and stopping the burner (2), etc.
The burner case (9) is equipped with a burner case (9), and an exhaust fan (3) is installed on the rear wall plate.

In the center of the lower part of the machine wall (7), extending in the front and back direction,
A grain collection gutter (10) equipped with a transfer spiral is provided, and a drying chamber (4) with a feed valve (11) supported at its lower part is installed in parallel and communicated with the upper side of this grain collection gutter (lO). Room (4),
(4) A hot air chamber (+2) is formed between the inner sides and communicated with the burner (2), and the temperature of the drying hot air in this hot air chamber (12) is detected in this hot air chamber (12). A hot air temperature sensor (13) is provided, and exhaust chambers (14), (14) are formed on the outside of the drying chamber (4), (4).
), and a motor (
15), and this motor (15) rotates the transfer spiral and the delivery valves (11), (11), and this motor (15) also drives the exhaust fan (3) at '. The exhaust fan (3) is configured to be rotationally driven.
3) Pulley (17) provided at the shaft end and the motor (15)
The bell (+9), which is hooked between the transmission pulley (18) and the speed change pulley (18) provided at the end of the shaft, is tensioned by the rotation of the tension device (20).
) is configured to rotate by the operation of a solenoid (21), and the rotation speed of the exhaust fan (3) is changed between high speed rotation and low speed rotation by the operation of the solenoid (21).

+i; f A fuel pump (22) having a fuel valve is provided on the outer side of the lower plate of the burner case (9), and when the fuel valve is opened and closed, the fuel pump (22) pumps the fuel tank (23).
) and supplies it to the burner (2), and a blower (24) and a motor (
25) is provided, and this motor (25) operates the blower (24).
) is rotated and this blower (24) supplies combustion air into the burner (2).
By sucking and exhausting the outside air passing around the burner (2) and the hot air generated from this burner (2) with the exhaust fan (3), this outside air and this hot air are mixed to become hot air for drying. This configuration is such that the suction volume of outside air changes by changing the speed of the exhaust fan (3).

A storage chamber (1) is formed above the drying chambers (4), (4), and ceiling plates (2Ei), (2Ei) are formed above the storage chamber (1).
6) and a transfer gutter (27) equipped with a transfer spiral is provided in the center of the transfer gutter (27), and the transferred grains are transferred to this storage chamber (1).
).

Diffusion at the bottom of this supply port! (28), and the front wall plate forming the storage chamber (1) is provided with a window (29) for visually observing the amount of grain stored in the storage chamber (1). A numerical value indicating the storage capacity is provided on the side of the window (29).

A grain raising machine (30) is installed in the front part of the front wall plate, and a packet conveyor (31) belt is stretched between the upper and lower boars inside, and the belt is stretched between the upper end and the starting end of the transfer gutter (27). is provided with a discharging tube (32) to communicate with the lower end and the grain collection gutter (1).
0) A supply gutter (33) is provided to communicate with the terminal end, and a motor (34) is provided on the top of the grain hoist (30), and this motor (34) moves the packet conveyor (31) belt. , the transfer spiral in the transfer trough (27) and the spreader plate (2
8) etc., and a moisture sensor (35) is installed at the center of the lower part of 1. The structure is configured to receive grains, crush the grains under pressure within this moisture sensor (35), and at the same time detect the moisture value of the crushed grains, and this moisture sensor (35)
is determined by the transmission of electrical measurement signals from the operating device (8) at predetermined time intervals. −(3
5) The motor (36) provided inside rotates, and this motor (
36) rotates each part of this moisture sensor (35) to detect the moisture value of the grain.

The operating device (8) is box-shaped, and the surface plate of the box includes a start switch (37) for starting and stopping the dryer (6), a stop + h switch (38), and a finish 1 ] Target moisture setting arc for setting standard moisture value (39),
A hot air temperature setting knob (40) for setting the hot air temperature, and a display that alternately displays the detected moisture value detected by the moisture sensor (35) and the detected drying hot air temperature detected by the hot air temperature sensor (13). A window (41) is provided, an outside temperature sensor (5) for detecting the outside temperature is installed on the outside of the lower plate, and a control device (42) and a wind sensor are installed inside. Yo control device (43
), and each setting (39), (40
) is a rotary switch type, and this setting distance (3
9) is the finish indicated on the surface plate [1 mark is 1! ! When the device is operated, the finishing target moisture value is set, and the setting value (40) is the numerical value displayed on the surface plate of the amount of grain stored in the storage chamber (20). When the burner (2) is moved to the same position, the temperature of the hot air generated from the burner (2) is set.

The air volume control device (43) is connected to the hot air temperature sensor (13).
) and the detection value detected by the outside air humidity sensor (5) is A
- an A-D converter (44) that performs D conversion, an input circuit (input circuit) into which the converted value converted by this A-D converter (44) is input;
45), an input circuit (4G) into which the operation of the setting circuit (40) is input, and performs arithmetic and logical operations, comparison operations, etc. on various input values input from these input circuits (45) and (46). The configuration includes a CPU (47) and an output circuit (48) that receives and outputs various commands from the CPU (4?).

The control device (42) includes an A-D converter (IHJ) that converts the detection value detected by the moisture sensor (35) from A to D.
), an input circuit (5G) into which the converted value converted by this A-D converter (49) is input, and each of the switches (37).
), (38) and an input circuit (51) in which the setting claw (39) is manually operated, each of these input circuits (50),
This CPU (4?) performs arithmetic and logical operations, comparison operations, etc. on various human power values manually input from (51);
7) is provided with an output circuit (52) that receives and outputs various commands.

The air volume control device (43) sends the start switch (37) and one sample setting signal (39) to the control device (42).
) is manually operated, and when the operation of the hot air temperature setting arc (40) is input to this air volume control device (43), the temperature of the hot air generated from the heat exchanger (2) is set, and the drying At the same time as the machine (6) starts, the set hot air temperature is generated from the burner (2), the hot air temperature sensor (13) detects the drying hot air temperature, and when this detected drying 8 air temperature is input. At the same time, the outside air temperature sensor (5) detects the outside air temperature, this detected outside air temperature is input, the detected hot air temperature for drying is compared with the set hot air temperature, and if there is a difference, the temperature is set to be the same. , the fuel tank 1 pump (2
2) The number of openings and closings of the fuel valve is changed to change the amount of fuel sucked in by this fuel pump (22) and supplied to the space (2), and during this drying work, for example,
The set hot air temperature set by operating the hot air temperature setting knob (40) is 55 degrees, but the hot air temperature sensor (13)
If the detected hot air temperature for drying detected by the sensor (5) is 50 degrees, and this set hot air temperature does not reach 55 degrees, then these 55 degrees and the detected outside air temperature detected by the outside air temperature sensor (5) are 5 degrees. A comparative difference is detected by comparing the temperatures of At this time, if it is detected that the amount of fuel supplied from the fuel pump (22) to the burner (2) is at the maximum level, the solenoid (2
1) operates and the exhaust fan (3) rotates 2000 r-
PM is changed to a low rotation speed of 170 Or-pm, and the exhaust fan (3) is configured to reduce the suction wind FB- of the outside air sucked and discharged by the exhaust fan (3). When the temperature reaches the same temperature as the set hot air temperature, the solenoid (21) is activated and the rotation of the exhaust fan (3) is returned to the original 200 Or-p.
-rn, and each of these numerical values is a configuration in which the best numerical values obtained from test results are set and stored.

The control device jδ (42) is an Iti windage control device (43
), the hot air temperature setting operation (40) is input,
When the operation of the starting switch (37) and the 1'l water gauge setting machine (39) is input to this control device (42), each of the motors (15) of the dryer (6), (
25), (34), and (36) rotate, and this dryer (6
) is started, the burner (2) and the moisture sensor (35) are started, and the moisture sensor (35)
detects the moisture value of the grain, this detected moisture value is input manually, and the grain moisture value 16, which is the same as the value for one sample, is set by operating the setting knob (39). 35) is detected, the control device (42) automatically controls and automatically stops the drying m (6).

By moving the setting knobs (39) and (40) of the operating device νt (8) to predetermined positions 12 and operating the start switch (37), the dryer (6) is started and at the same time the burner (2) The set hot air temperature set from 2 and the outside air passing around this burner (2) are mixed to become drying hot air,
This drying hot air is passed from the hot air chamber (12) to the drying chamber (4), passes through the exhaust chamber (14), and is sucked and exhausted by the exhaust fan (3), and the grains stored in the storage chamber (1) are , this storage chamber (1)
The grains are exposed to this drying hot air while flowing down in the drying chamber (4) and dried, and then are fed out to the lower part by the delivery valve (11) and flowed down to be supplied into the grain collecting trough (RO), where the grains are collected. Grain gutter (10
) is used to transfer the grain from this collection/grain trough (10) to the supply trough (3).
3) into the grain hoisting machine (30), transported to the upper part by the bucket conveyor (31), and fed into the transfer gutter (27) via the dispensing tube (32), and this transfer gutter (27)
Diffusion ffi through this transfer trough (27) in the transfer spiral within
(2B) and is evenly diffused and reduced into the storage chamber (1) by this diffusion plate (28), circulated and dried, and the moisture sensor (35) operates the setting setting (3 pieces). When a grain moisture content f1 that is the same as the finishing target moisture value set is detected, the control device (42) of the operating device (8) automatically controls the dryer (6) to automatically stop the dryer (6).

During this drying work, the hot air temperature setting hole (40)
If the detected drying hot air temperature detected by the hot air temperature sensor (13) does not match the set hot air temperature set by operating the
) is compared with the outside air temperature detected by the CPU (47), and this detected comparison difference is compared with the temperature set for the CPU (47). 21) is activated, the rotation of the +Jl- wind fan (3) is changed to low speed rotation, and the amount of outside air sucked and exhausted by this fan (3) is reduced to dry the grains, and the detected drying When the hot air temperature for use reaches the same temperature as the set hot air temperature, the solenoid (21) is activated to restore the rotation of the fan (3) to its original rotation, restore the suction air volume of outside air to the original, and remove the grain. Dry the grains.

The hot air temperature sensor (13) detects and displays the display window (41).
) When the detected drying air temperature displayed on the screen is not the same as the set hot air temperature, the rotation of the exhaust fan (3) is changed to low speed rotation, and the outside air that is sucked and exhausted by this exhaust fan (3) is By reducing the suction air volume, the detected drying hot air temperature is always the same as the set hot air temperature, so that the operator can perform drying work with peace of mind.

[Brief explanation of the drawing]

1j shows an example of this issue 151, and the 11th
2 is a block diagram, FIG. 2 is a flowchart diagram, FIG. 3 is an overall front view of the dryer partially cut away, FIG. 4 is a rear view of the dryer, and FIG. 5 is an overall side view of the dryer partially cut away. Figure, 6th
The figure is an enlarged front view of a part of the dryer. In the figure, symbol (1) is a storage chamber, and (2) is a burner. (3) shows an exhaust fan, (4) shows a drying room, and (5) shows an outside air temperature sensor. Patent applicant name Iseki 3
Ki Co., Ltd. Representative Masaaki IsekiFigure 3

Claims (1)

[Claims] Below the storage chamber (1) in which the grains are stored, there is a drying chamber (4) in which the grains are dried by sucking and exhausting the set hot air temperature generated from the burner (2) with the exhaust fan (3) while the grains are flowing down. ) and an outside air temperature sensor (5) to detect the outside air temperature.
), and the exhaust fan (3) is configured to vary the amount of outside air sucked and discharged by the exhaust fan (3), in which the set hot air temperature and the outside air temperature sensor (
5) is compared with the outside air temperature detected by the burner (2), and even if the difference in the comparison is greater than a predetermined value and the maximum amount of fuel is being supplied to the burner (2), no fuel is generated from the burner (2). When the hot air temperature to be used does not reach the set hot air temperature, an air volume control device is provided to reduce the amount of outside air sucked and discharged by the exhaust fan (3) by a predetermined amount until the hot air temperature reaches the set hot air temperature. Features grain drying control system.