JPS61282781A - Control system of 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 method for a grain dryer.

Conventional technology In the past, grains stored in a storage chamber were exposed to hot air generated by a burner while flowing down the drying chamber below the storage chamber to dry them. Regardless, the dryer was operated continuously from the start of grain drying to the end of drying, without stopping, to dry the grains. Problems that the invention aims to solve: drying from the upper storage chamber to the lower part While letting the grains flow down the room, the hot air generated by the burner is sucked in, and the hot air is passed through the drying room through the hot air room, passed through the exhaust room, sucked and exhausted by the exhaust fan, and is flowing down inside the drying room. In dryers that dry the grain by exposing it to this hot air until the grain is finished drying, if this drying work is done at night, the outside air temperature may drop abnormally at night. Even if drying is performed continuously under such conditions, the grain temperature during drying will rise to the specified grain temperature due to the influence of the low outside air temperature.
As a result, the drying rate of the grains decreases, resulting in poor drying efficiency, and in order to improve the drying rate, it is necessary to increase the temperature of the hot air generated from the burner. In order to achieve a high temperature, it is necessary to increase the amount of fuel supplied into the burner, which may result in more fuel consumption than necessary, resulting in increased fuel loss.

Means for Solving the Problems This invention provides a storage chamber (1) for storing grains in the -L section, a drying chamber (2) through which the grains flow down in the lower part, and a burner ( 3) A blower (6) is provided to suck and exhaust the hot air generated from the hot air chamber (4) through the drying chamber (2) and the exhaust chamber (5), and also to the storage chamber (1). is equipped with an outside temperature detection sensor (7) that detects outside air temperature, and if the outside air temperature detected by this outside air temperature detection sensor (7) is below the set outside air temperature, the operation of the dryer is stopped, and then the outside temperature is If the outside temperature detected by the detection sensor (7) is above the set outside temperature, the dryer is restarted, and the outside temperature detected by the outside temperature detection sensor (7) is always above the set outside temperature. If necessary, the grain drying control system for the grain dryer is configured such that a control device for controlling the continuous operation of the dryer is installed and controlled.

Effect of the Invention While the grains accommodated in the storage chamber (1) are fed out from the storage chamber (1) into the drying chamber (2) and flowed down, the burner (3
) from the hot air chamber (4) to the drying chamber (2).
The grains flowing down inside the drying chamber (2) are exposed to this hot air and dried by being suctioned and exhausted by the exhaust fan (6) through the ventilation chamber (5), and the moisture in the grains is removed. When the specified moisture content is reached, the dryer is automatically controlled by the control device to automatically stop. During this drying operation, the outside temperature detection sensor (7) detects the outside temperature, and the detected outside temperature and the inside of the control device are automatically controlled. This control device compares the set outside air temperature that has been set and stored, and when the detected outside air temperature is lower than the set outside air temperature, the control device automatically stops the operation of the dryer, and the grain The drying operation is stopped, and then the outside temperature detection sensor (7
) detects an outside air temperature lower than the set outside air temperature, the dryer is controlled to restart by the control device, the grain drying operation is restarted, and the grains are dried.

When the outside air temperature detected by the outside air temperature detection sensor (7) is always higher than the set outside air temperature, the dryer is controlled to operate continuously by the control device, and the drying operation of the grains is continued. is dried.

Effects of the Invention According to the present invention, the outside air temperature during drying work is detected by the outside air temperature detection sensor (7), and the drying work is automatically stopped or restarted based on the detected outside air temperature.
Additionally, since the drying process is controlled to be continuous, if the outside temperature drops abnormally during nighttime drying, the drying process is automatically stopped, reducing the drying rate of grains. In this case, the drying operation is stopped and the drying operation is carried out only when the outside air temperature is good for drying efficiency, which improves the drying efficiency of grains and also reduces fuel consumption. This will improve the energy saving effect.

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. It has a configuration in which an operating device (10) for controlling start, stop, etc. of (8) is removably attached.

Located in the center of the lower part of the machine wall (9) and extending in the longitudinal direction, there is a grain collection gutter (1
1), and on the upper side of this grain collection gutter (11), drying chambers (2), (2) are formed in the vertical direction between the left and right ventilation mesh plates and communicated with each other. 2) Rotatable feeding valves (12), (12) are pivotally supported at the bottom, and this feeding valve (
12), (12) are configured to feed out grains from inside the drying chambers (2), (2) and make them flow 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 into a burner case (13) provided in the front wall plate, and a ventilation chamber ( 5), (5)
, and communicates with the tJI fan (6) provided on the rear wall plate. A hot air temperature detection sensor (14) for detecting the hot air temperature in the hot air chamber (4) is provided on the inner wall of the rear wall plate in the hot air chamber (4), and a motor (15) is provided at the bottom of the rear wall plate. ), and this motor (15) operates the grain collection gutter (
11) in the transfer helix, said delivery valve (12), (
+2) and the exhaust fan (6).

A fuel tank (16) is installed at the front of the dryer (8), and a heat tank (16) is installed at the root side of the lower wall of the burner case (13).
3) A fuel pump (17) is provided to supply fuel into the fuel tank (16), and a fuel hose and a fuel pump (17) are provided to supply fuel into the fuel tank (16).
7) and a fuel supply pipe to supply fuel into the burner (3), and combustion air is supplied to the burner case (13).
A blower installed on the side of the earthen wall is rotated by a blower motor (18) to blow air into the burner (3) through a blower duct.

A storage chamber (1) is formed above the drying chambers (2), (2), and a ceiling plate (lill), (1) is formed above the storage chamber (1).
8) is provided with a transfer gutter (20) equipped with a transfer helix, and in the center of this transfer gutter (20) is opened a supply port for supplying transferred grains into this storage chamber (1). A diffusion m (21) is provided at the lower part of the mouth, and this diffusion plate (21) is configured to uniformly diffuse and return grains into the storage chamber (1).

The grain raising machine (22) is removably attached to the front part of the front wall plate,
Inside, a bucket conveyor (23) belt is stretched between the upper and lower pulleys, a dispensing cylinder (24) is provided between the upper end and the starting end of the transfer gutter (20) for communication, and the lower end and the There is a space between the grain collecting trough (11) and the terminal end.

A supply gutter (25) is provided for communication, a motor (2B) is provided on the soil side of the grain hoist (22), and this motor (28)
The bucket conveyor (23) belt and the transfer gutter (
20) is configured to rotationally drive the transfer helix, etc.

The operating device (10) is box-shaped, and the front surface includes a start switch (27), a stop switch (2B), a hot air temperature setting hole (29), a grain type setting hole (30), and a timer hole. (31) etc., an outside temperature detection sensor (7) for detecting the outside air temperature is installed on the root side of the lower wall, and a control device (32) etc. is installed inside. ) is an input circuit (33) into which the operations of the switches (27), (28) and the setting switches (29), (30), (31), etc. are input, and the outside temperature detection sensor (
7) and an AD converter (34) that converts the detection value detected by the hot air temperature detection sensor (14) from AD to AD, and the converted value converted by this AD converter (34) is input. Input circuit (33), these input circuits (33), (33
) is configured to have a CPU (35) that performs arithmetic and logical operations and comparison operations on various input values, and an output circuit (3B) that receives and outputs various commands issued by this CPU (35). The control device (32) controls the fuel pump (17) and the various motors (15), (18),
(26) etc. is configured to control starting, stopping, etc.

The control device fil (32) is connected to the outside temperature detection sensor (7).
) compares the detected outside air temperature detected by the controller (32) with the set outside air temperature set and stored in this control device (32), and if the detected outside air temperature is lower than the set outside air temperature, this control When the device (32) automatically stops the dryer (8) and the outside temperature detection sensor (7) detects an outside temperature higher than the set outside temperature, the control device (32) automatically stops the dryer (8). 8), and when the outside temperature detected by the outside temperature detection sensor (7) is always higher than the set outside temperature, the control device (32) The dryer (8)
is a configuration in which continuous operation is controlled.

The control device (32) controls the hot air temperature setting device (28).
Set the burner (3) so that the hot air temperature reaches the set temperature set in
), the hot air temperature generated from the burner (3) is detected by the hot air temperature detection sensor (14), and the detected hot air temperature and The set hot air temperature and this control device (32)
The control device (32) controls the fuel pump (32) so that the detected hot air temperature is the same as the set hot air temperature.
17) to control the flow rate of fuel supplied into the burner (3).

Operating device (10) (7) Each setting knob (29), (3o)
, (31) and the start switch (27), hot air is generated from the burner (3) provided on the front wall plate, and this hot air is sent to the exhaust fan (6) provided on the rear wall plate. ), the drying room (2) is moved from the hot air room (4) to the drying room (2).
), and the grains stored in the wall (9) of the dryer (8) are exposed to this hot air and dried while flowing down from the storage chamber (1) into the drying chamber (2), The grain is delivered to the lower part by the delivery valve (12), transferred and discharged by the lower transfer spiral through the collecting trough (11) into the supply trough (25), and transported to the upper part by the elevator (22). It is transferred and supplied onto the diffusion plate (21) via the transfer gutter (2o) by the transfer helix, and this diffusion plate (2
1), the grains are evenly diffused and returned to the storage chamber (1), circulated and dried until they reach the specified moisture content, and then the timer is released (31).
When the time set in is reached, the dryer (8) is automatically controlled by the control device (32) of the operating device (10) to automatically stop the dryer (8), but during this drying operation, the outside temperature detection sensor (7) The detected outside air temperature is compared with the set outside air temperature set in the control device (32), and when the detected outside air temperature is below the set outside air temperature, the control device (32) The control device (32) automatically stops the operation of the dryer (8) to stop the grain drying operation, and then when the outside temperature detection sensor (7) detects an outside temperature equal to or higher than the set outside temperature, the control device (32) Then, the dryer (8) is restarted and the grain drying operation is restarted to dry the grains.

When the outside air temperature detected by the outside air temperature detection sensor (7) is always higher than the set temperature, the control device (
At step 32), the dryer (8) is continuously controlled to dry the grains by performing continuous drying operations.

Since the drying operation of the grains is controlled by the outside air temperature detected by the outside air temperature detection sensor (7), the drying operation can be carried out efficiently, and at the same time, the amount of fuel used is efficient.

[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 front view, Fig. 3 is a partially cutaway side view, and Fig. 4 is a dryer. It is a partially enlarged front view. 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 Shows the outside temperature detection sensor.

Claims (1)

[Claims] A storage chamber (1) for storing grains is provided in the upper part, a drying chamber (2) is provided in the lower part for the grains to flow down, and a burner (3) is provided in the lower part.
) from the hot air chamber (4) to the drying chamber (2).
The air is sucked and discharged by an exhaust fan (6) through an air exhaust chamber (5), and an outside temperature detection sensor (7) is installed in the storage chamber (1) to detect outside air temperature. If the outside air temperature detected by the detection sensor (7) is below the set outside air temperature, the operation of the dryer is controlled to stop, and then if the outside air temperature detected by the outside temperature detection sensor (7) is above the set outside air temperature. A control device is provided to control restart of the dryer, and to control continuous operation of the dryer if the outside air temperature detected by the outside air temperature detection sensor (7) is always higher than the set outside air temperature. Features a grain drying control system for grain dryers.