JPS61246580A - Controller for drying of cereal grain 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 device for a grain dryer.

Conventional technology Conventionally, the hot air temperature setting knob was manually operated to set the hot air temperature depending on the type of grain to be dried and the amount stored in the dryer. This device uses a moisture detection sensor to detect the moisture in the drying grains while drying the grains at a constant temperature.

Problem to be Solved by the Invention While grains stored in a storage chamber are allowed to flow down from this storage chamber into a lower drying chamber, hot air generated from a burner is ventilated from the hot air chamber to the drying chamber, and the exhaust chamber is closed. The grains flowing down in the drying chamber are exposed to this hot air and dried by suctioning and exhausting the air with an exhaust fan, while the moisture detection sensor detects the moisture content of the drying grains to ensure that the grains are regulated. In a dryer that automatically stops when the moisture level is reached, if the type of grain to be stored and dried in the storage chamber is beer barley or rice grains, and if the moisture content is high, the temperature of the hot air generated from the burner should be adjusted. If you manually set the temperature high and perform drying with a constant hot air temperature,
The germination rate of beer barley may decrease, the outer skin of paddy grains may crack and the paddy grains may fall off, and the hot air temperature generated by the burner may be manually set to a low temperature to maintain a constant hot air temperature. If drying is performed, the drying time may become longer and the drying efficiency may decrease.

Means for Solving the Problems This invention provides a storage chamber (1) in the upper part for storing grains and a drying chamber (2) in the lower part through which the grains flow down, and the drying chamber (2) is provided in the lower part for storing the grains. Hot air is sent from the hot air chamber (4) to the drying chamber (
2), the air is sucked and exhausted by an exhaust fan (6) through an air exhaust chamber (5), and a moisture detection sensor (7) is installed in the storage chamber (1) to detect moisture in the grains during circulation drying. ), and when the moisture value of the grains detected by this moisture detection sensor (7) is higher than the set moisture value, the temperature of the hot air generated from the burner (3) is controlled to be low, and when the moisture value of the grains detected by this moisture detection sensor (7) is lower than the set moisture value. A grain drying control device for a grain dryer is provided with a control device for controlling the temperature of the hot air generated from the burner (3) to be high.

Functions and Effects of the Invention The grains flowing down from the storage chamber (1) into the drying chamber (2) are transported by hot air generated from the burner (3) from the hot air chamber (4) to the drying chamber (2) and the exhaust air. By passing through the chamber (5) and suctioning and exhausting the air by the exhaust fan (6), it is exposed to this hot air and dried.
During this drying process, the moisture detection sensor (7) detects the moisture in the grains being dried, and compares the detected moisture value of the grains with the set moisture value, and the detected grain moisture value is higher. Then, the control device controls the temperature of the hot air generated from the burner (3) to be low, and conversely, when the detected grain moisture value is lower, the temperature of the hot air generated from the burner (3) becomes higher. The grains are dried under the control of the controller.

According to the present invention, depending on the detected grain moisture value detected by the moisture detection sensor (7), the temperature of the hot air generated from the burner (3) is low when the grain moisture is high, and conversely, when the grain moisture is low, the hot air temperature is low. Since the temperature is controlled at a high level, even when drying beer barley or paddy grains with high moisture content, if the grains have high moisture content in the early stage of drying, the grains are not exposed to high hot air temperatures. Beer barley has a reduced germination rate,
Also, since the outer skin of rice grains does not crack, the grains do not fall off.

Embodiment In the illustrated example, the machine wall (9) of the dryer (8) 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, and there is a ceiling above the machine wall (9). Plate (lO), (1
0), and an operating device (!l) and a moisture detection sensor (7) are removably attached to the front wall plate.

Located at the center of the lower part of the machine wall (9) and extending in the front and back direction, there is a lower transfer gutter (shaped like an opening in front view) equipped with a transfer spiral.
12), and on this lower transfer gutter (12) there is a V
A letter-shaped grain collection room (13) is provided and communicated with the grain collection room (13).
13) Above, drying chambers (2), (2) are formed vertically between the left and right ventilation mesh plates and communicated with each other, and these drying chambers (2), (2)
Rotatable feeding valves (14), (14) are provided at the bottom, and the grains are fed out from the drying chambers (2), (2) and flowed down.

An inclined plate is provided at the upper part of each ventilation mesh plate, a partition plate is provided at the lower part, and a hot air chamber (4) is formed between the inner ventilation mesh plates,
It is configured to communicate with a burner (3) built in a burner case (15) provided in the front wall plate, and a ventilation chamber is provided between the outer ventilation net plate and the left and right wall plates. (5), (5
), which communicates with the exhaust fan (6) provided on the rear wall plate. A hot air temperature detection sensor (1G) for detecting the temperature inside the hot air chamber (4) is provided on the inner wall of the rear wall plate behind the hot air chamber (4). A motor (I7) is provided below the rear wall plate, and this motor (17) operates the transfer spiral in the lower transfer gutter (12) and the delivery valve (14).
), (14) and the exhaust fan (6).

A fuel tank (18) is provided at the front of the dryer (8),
The burner (3) is installed on the outer side of the lower wall plate of the burner case (15).
) is provided, and a fuel pump (19) is provided to supply combustion fuel into the burner (3) from the fuel tank (1 day) through the fuel hose (20), the fuel pump (18) and the fuel supply pipe (21). ), and the combustion wind is supplied to the burner case (15), the blower and blower motor (22) installed on the outside of the J1m wall plate through the blower duct, and then to the burner (3). ) is configured to blow air into the inside.

A storage chamber (1) is formed above the drying chambers (2), (2), and the ceiling plate (lO), (
Upper transfer gutter (23) with internal transfer helix along 10)
), a supply port for supplying the transferred grains into the storage chamber (1) is provided in the center of this upper transfer gutter (23), and a diffusion plate (24) is provided at the bottom of this supply port. Diffuser (2
4) is configured to uniformly diffuse and return grains into the storage chamber (1).

The grain raising machine (25) is removably attached to the front part of the front wall board, and a packet conveyor (2B) belt is stretched between the upper and lower pulleys inside, and the upper end and the starting end of the upper transfer gutter (23) are connected to each other. A dispensing tube (27) is provided between the lower end and the terminal end of the lower transfer gutter (12) for communication, and a supply gutter (28) is provided between the lower end and the terminal end of the lower transfer gutter (12).
A motor (2B) is provided on the upper side of the grain hoist (25), and this motor (29) is used to control the transfer between the bucket conveyor (2B) belt and the upper transfer gutter (23). This is a configuration in which a spiral or the like is rotationally driven.

The moisture detection sensor (7) has a box shape, and a detection part for detecting moisture in grains protrudes from inside the box. (9) The structure is such that the grains flowing down the inside are crushed under pressure and the moisture content of the crushed grains is detected at the same time, and this moisture detection sensor (7) is connected to the operating device! (11) This is a configuration that operates by transmitting an electrical measurement signal from (11).

The operating device (11) is box-shaped and has a start switch (30), a stop switch (31), a target moisture setting hole (32), a hot air temperature setting hole (33), etc. on one surface, It has a control device (34) inside,
The control device (34) includes the respective switches (30), (3
1) and an input circuit (35) into which the operations of the respective settings (32) and (33) are input, and the moisture detection sensor (7).
) and an A-D converter (3B) in which the detected value detected by the hot air temperature detection sensor (!θ) is A-D converted;
- An input circuit (35) into which the converted value converted by the D converter (38) is input, these input circuits (35), (35)
The control device (37) has a CPU (37) that performs arithmetic and logical operations and comparison operations on various input values input from the CPU (37), and an output circuit (38) that outputs various commands issued by the CPU (37). 34) at the fuel pump (
19), the moisture detection sensor (7), and each of the motors (!7), (22), (29), etc. are started, stopped, and controlled.

The CPU (37) compares the set value set in the target setting unit (32) with the detected value detected by the moisture detection sensor (7), and sets the grain moisture value that is the same as the set value to the moisture detection sensor. (7) is configured to automatically stop the dryer (8) when detected by the moisture detection sensor (7), and the detected grain moisture value detected by the moisture detection sensor (7) and the set moisture value stored in this CPU (37). When it is determined that the detected grain moisture value is higher than the set moisture value, the CPU (37) commands to reduce the combustion fuel supplied to the burner (3) by the fuel pump (19). Then, the temperature of the hot air generated from the burner (3) is controlled to decrease to a predetermined hot air temperature stored in the CPU (37), thereby lowering the hot air temperature. Conversely, if it is determined that the detected grain moisture value is lower than the set moisture value, the temperature of the hot air generated from the burner (3) will be set to a predetermined temperature stored in this CPU (37) based on a command from the CPU (37). The configuration is such that the temperature of the hot air is increased by controlling the temperature to rise to the temperature of the hot air. This hot air temperature is detected by the hot air temperature detection sensor (1B) and controlled by the CPU (3?) so that the hot air temperature is always the same as a predetermined hot air temperature. At the start of drying work, the hot air temperature is controlled by the hot air temperature set by the hot air temperature setting knob (33), but when the moisture detection sensor (7) starts detecting grain moisture, the hot air temperature is controlled as described above. This is the configuration that will be used.

Note that when the detected grain moisture value detected by the moisture detection sensor (7) is equal to or higher than the set moisture value, the burner (3)
control to lower the temperature of the hot air generated and at the same time increase the amount of suction air sucked and discharged by the air exhaust fan (6),
Further, when the detected grain moisture value becomes less than the set moisture value, the temperature of the hot air generated from the burner (3) is increased, and at the same time, the amount of suction air sucked and discharged by the air exhaust fan (6) is controlled to be reduced. Alternatively, an air flow drying method may be used when the grain moisture is high, and a hot air drying method is used when the grain moisture is low.

By operating the operating device (11), hot air generated from the burner (3) provided on the front wall plate is sucked and exhausted by the exhaust fan (6) provided on the rear wall plate, and the hot air chamber (4) The drying chamber (2) is ventilated, and the grains stored in the machine wall (9) of the dryer 41 (8) are exposed to this hot air while flowing down the drying chamber (2), are dried, and are fed out. It is fed out to the lower part by the valve (14), transferred and discharged into the supply gutter (28) by the lower transfer helix, transported to the upper part by the grain hoist (25), and then transferred to the upper transfer gutter (23) by the upper transfer helix. It is transferred and supplied to the diffusion chamber (24) through the diffusion plate (20), and is evenly diffused and reduced into the storage chamber (1) by this diffusion plate (20). ) When the moisture detection sensor (7) detects the same moisture value as the set value set in the operating device (
11) to automatically stop the dryer (8), but during this drying operation, the detected grain moisture value detected by the moisture detection sensor (7) and the control device (11) of the operating device (11) are automatically controlled. 3
0, and if the detected grain moisture value is equal to or higher than the set moisture value, the controller N (30) supplies the fuel into the burner (3) with the fuel pump (18). The fuel for combustion is controlled to be reduced, the temperature of the hot air generated from the burner (3) is controlled to be low, and when the detected grain moisture value is below the set moisture value, the control device (30) controls the fuel pump. (
At step 18), the amount of combustion fuel supplied into the burner (3) is controlled to be increased, and the temperature of the hot air generated from the burner (3) is controlled to be high to dry the grains.

The moisture value of the grains to be stored and dried in the machine wall (9) is detected, and if the detected grain moisture value is above the set moisture value, the hot air temperature is low, and if it is below the set moisture value. Since the grains are dried by raising the temperature of the hot air, even if the grains are beer wheat or rice grains with high moisture content, the germination rate of beer wheat grains will not decrease, and the outer skin of rice grains will not crack.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a block diagram, Fig. 2 is a partially cutaway side view, Fig. 3 is a cross-sectional view taken along line A-A in Fig. 2, and Fig. 4 is It is an enlarged front view of a part. In the figure, (1) is the storage chamber, (2) is the drying chamber, (3) is the burner, (4) is the hot air chamber, (5) is the exhaust chamber, (6) is the exhaust fan, and (7) is the A moisture detection sensor is shown.

Claims (1)

[Claims] A storage chamber (1) for storing grains is provided in the upper part, and a drying chamber (2) for the grains to flow down is provided in the lower part. 2), the air is sucked and exhausted by an exhaust fan (6) through an air exhaust chamber (5), and a moisture detection sensor (7) is installed in the storage chamber (1) to detect moisture in the grains during circulation drying. ), and when the moisture value of the grains detected by this moisture detection sensor (7) is higher than the set moisture value, the temperature of the hot air generated from the burner (3) is controlled to be low, and when the moisture value of the grains detected by this moisture detection sensor (7) is lower than the set moisture value. A grain drying control device for a grain dryer, comprising a control device for controlling the temperature of hot air generated from the burner (3) to be high.