JPS6287781A - Grain drying control method of grain dryer - 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 Conventionally, grains stored in a storage chamber are fed out from the storage chamber into a drying chamber, and a sensor detects the type and amount of grains stored in the storage chamber, as well as the outside temperature.
The temperature of the hot air generated from the burner is set according to the detected outside air temperature value, and hot air at the set temperature is generated from the burner, and this hot air is sucked by the exhaust fan to ventilate the drying room. While the grains being sucked and exhausted by the exhaust fan and flowing down in the drying chamber are exposed to this hot air and dried, the moisture value of the grains during this circulation drying is detected by a moisture detection sensor that operates at predetermined time intervals. is detected, and when this moisture detection sensor detects a grain moisture value that is the same as the grain finishing target moisture value, the dryer is automatically stopped, but during this drying operation, the temperature of the grains during circulation drying is When the grain temperature detection sensor detects and the detected shell temperature value exceeds a predetermined temperature value, the temperature value of the hot air generated from the burner is controlled so as not to rise above a predetermined upper limit hot air temperature value, The method was to dry the grains.

Problems to be Solved by the Invention While the grains stored in the storage chamber are fed out from the storage chamber into the lower drying chamber and flowed down, a set hot air temperature is generated from the burner, and this hot air is sucked by the exhaust fan. As a result, the drying chamber is ventilated and the air is sucked and exhausted by an exhaust fan, and while the grains flowing down the drying chamber are exposed to this hot air and dried, a moisture detection sensor is used to detect the grains during this circulation drying. When the moisture value is detected and this moisture detection sensor detects the grain moisture value that is the same as the finishing target moisture value of the grain, the dryer is automatically stopped. The grain temperature detection sensor detects the temperature of 171, and when the detected grain temperature value of . In dryers that dry the grains by controlling them so that they do not dry, an abnormality may occur in the grain temperature detection sensor, causing the grain temperature detection sensor to dry the grains during circulation drying. When the temperature is no longer detected, the temperature of the hot air generated by the burner is no longer controlled to be below the predetermined upper limit hot air temperature value, and as a result, the temperature of the grains during circulation drying becomes abnormal. If the temperature of the grain increases abnormally, the grain may develop shell side or breakage.

Means for Solving the Problems This invention provides a drying chamber (2) below a storage chamber (1) for storing grains, and directs hot air generated from a burner (3) to the drying chamber (2). The storage chamber (1) is provided with a moisture detection sensor (5) for detecting moisture in the grains during circulation drying, and a moisture detection sensor (5) for detecting moisture in the grains during circulation drying. Grain temperature detection sensor (6
) and an outside air temperature detection sensor (7) that detects the outside air temperature.
is provided, and when the detected grain temperature detected by this grain temperature detection sensor (6) is higher than a predetermined temperature value, the burner (3
) is configured to change and control the temperature of the hot air generated from the hot air so as not to rise above a predetermined upper limit hot air temperature value. When the grain temperature is no longer detected, either the detected grain moisture value detected by the moisture detection sensor (5) is below a predetermined moisture value, or the detection detected by the outside air temperature detection sensor (7). The grain is characterized by being equipped with a hot air temperature control device that changes and controls the temperature of the hot air generated from the burner (3) to below the predetermined upper limit hot air temperature value when the outside air temperature is detected to be above a predetermined temperature value. The dryer has a grain drying 1 ton JI control system.

2 Kan ＾ p Hiro 1 The grains flowing down from the storage chamber (1) into the drying chamber (2) are detected by detecting the type and amount of the grains stored in this storage chamber (1), and the outside temperature. →: The temperature of the hot air generated from the eighth (3) is set according to the outside air temperature detected by the sensor (7), this set hot air temperature is generated from the burner (3), and this hot air is sent to the exhaust fan (4). ), the drying room (2) is ventilated, the exhaust air is sucked and exhausted by the exhaust air 4fi (4), and the grains are dried by being exposed to hot air of The moisture value is detected by a moisture detection sensor (5), and when this moisture detection sensor (5) detects a moisture value of the grain that is the same as the target moisture value of the grain, the dryer is automatically stopped. During this drying operation, the grain temperature detection sensor (6) detects the temperature of the grains undergoing circulation drying, and the detected grain temperature value is higher than a predetermined temperature value set and stored in the control device. -, the grains are dried by controlling the temperature value of the hot air generated from the burner (3) so that it does not exceed a predetermined upper limit hot air temperature value set and stored in the control device.

Also, if an abnormality occurs in the grain temperature detection sensor (6) during this drying operation and the grain temperature detection sensor (6) no longer detects the temperature of the grain during circulation drying,
The detected grain moisture value detected by the moisture detection sensor (5) is below a predetermined grain moisture value set and stored in the control device, or the outside air temperature detection sensor (7) detects When the detected outside air temperature value exceeds the predetermined outside air temperature value set and stored in the control device, the temperature of the hot air generated from the burner (3) is set and stored at the predetermined upper limit. To keep the temperature low below the hot air temperature value,
The grains are dried under the control of the controller.

Effects of the Invention According to the present invention, the temperature of the hot air generated from the burner (3) is adjusted to the upper limit of the setting based on the detected grain temperature value detected by the grain temperature detection sensor (6) that detects the temperature of the grain during circulation drying. It is controlled so that the temperature does not rise above the hot air temperature, and if an abnormality occurs in this grain temperature detection sensor (6), this grain temperature detection sensor (6) detects the temperature of the grain during circulation drying. When it runs out, the moisture detection sensor (5)
Depending on the detected grain moisture value detected by the burner (
3) The temperature of the hot air generated from the burner (3) is controlled to be below the upper limit hot air temperature value of the setting, so that even when an abnormality occurs in the grain temperature detection sensor (6), the temperature of the hot air generated from the burner (3) is controlled. Since the upper limit hot air temperature value of the hot air temperature is controlled to a low temperature, the temperature of the grain will not rise abnormally, so the grain will not be split or broken. There isn't.

Embodiment In the illustrated example, the machine wall (9) of the dryer (8) has a rectangular shape in a 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. 8) and an operating device (10) for controlling starting and stopping, etc., and the machine wall (9).
The structure is equipped with a moisture detection sensor (5) that detects the moisture value of grains flowing down.

Located in the center of the lower part of the machine wall (9) and extending in the front-rear direction, there is a grain collection gutter (11) which has a seven-figure shape in front view and has a built-in transfer spiral for transporting grains by rotation. Drying chambers (2), (2) are provided in the vertical direction on the upper side of this grain collection gutter (11) and communicated with each other, and the lower part of these drying chambers (2), (2) is used to feed grains and flow down. The structure is such that the delivery valves (12), (12) are rotatably supported.

A hot air chamber (13) is formed inside the drying chambers (2), (2) and communicates with a burner (3) built into a burner case (14) provided on the front wall plate. Drying room (2),
(2) A ventilation chamber (15) between the outside and the left and right wall plates,
(15) and an exhaust fan (4) provided on the rear wall plate.
The hot air chamber (13) and the exhaust chamber (15) are provided with an inclined plate on the upper side and a partition plate on the lower side. A hot air temperature detection sensor (1B) for detecting the hot air temperature in the hot air chamber (13) is installed on the inner wall of the rear wall plate, and a motor (1B) is installed at the bottom of the rear wall plate.
7), and the motor (17) operates the transfer spiral in the grain collection trough (11), the delivery valve (12), (12)
It is configured to rotationally drive the exhaust fan (4) and the like.

A fuel tank (18) is installed at the front of the dryer (8), and a fuel pump (18) is installed at the outer side of the lower plate of the burner case (10).
8), and a fuel hose (2) is provided from the fuel tank (18).
0), the fuel pump (19) sucks the fuel, and the fuel pump (19) supplies this fuel into the burner (3) via the fuel supply pipe (21). Air is blown into the burner (3) through a blower duct (20) by rotating a blower (22) provided on the outer side of the upper plate of the burner case (ia) with a blower motor (23).

A storage chamber (1) is formed above the drying chambers (2), (2), and the inner wall of the rear wall plate in this storage chamber (1) is filled with grain flowing down inside this storage chamber (1). A grain temperature detection sensor (6) for detecting grain temperature is provided, and ceiling plates (25), (25) are provided on the upper side of the storage chamber (1).
), (25), a transfer gutter (2B) is provided with a built-in transfer spiral for transferring grains by rotation, and a transfer gutter (26) is provided in the central part of the transfer gutter (26). A supply port for supplying grains into the storage chamber (l) is provided, a diffusion plate (27) is provided below the supply port, and the diffusion plate (27)
The structure is such that the grains are evenly diffused and returned into the storage chamber (1).

The grain raising machine (28) is attached to the front part of the front wall plate, and inside the bucket conveyor (29) belt is stretched between the upper and lower pulleys, and between the upper end and the starting end of the transfer gutter (28). A dispensing tube (30) is provided and communicated with the lower end and the grain collection gutter (11).
) A supply gutter (31) is provided between the end portion and the end portion for communication,
A motor (32) is provided on the upper side of the grain hoist (28),
This motor (32) drives the bucket conveyor (29) belt, the transfer spiral in the transfer trough (26) and the spreader plate (
27) etc. is configured to rotate.

The moisture detection sensor (5) has a box shape, and a detection part for detecting the moisture value of grains is configured to protrude from inside the box, and this protruding detection part is in a state of protruding into the front wall plate. It is attached to this front wall plate, and is configured to crush a part of the grains flowing down inside the machine wall (9) under pressure with the detection part and at the same time detect the moisture value of the crushed grains. The moisture detection sensor (5) operates a motor (3) installed inside the box by electrical measurement signals sent from the operating device (10) at predetermined intervals.
3) rotates, and the rotation of this motor (33) rotates the detection unit to detect the moisture value of the grain.

The operating device (10) is box-shaped, and the front plate includes a start switch (34), a stop switch (35), a setting hole for one sample (3B), a hot air temperature setting transfer (37), and a grain control device. A type setting conveyor (38) is provided, an outside air temperature detection sensor (7) for detecting the outside air temperature is provided on the side of the bottom plate 1, and a control device (39) is provided inside, which has a t' configuration.
The control device (38) is connected to each of the switches (34) and (35).
and each of the settings (3[i), (37), (38
), an input circuit (40) into which the operation is input; an A-D converter (41) that converts the detection values detected by the sensors (5), (6), (7), and (16) from AD to AD; , this A-D
An input circuit (40) that inputs the converted value converted by the converter (41), a CPU (42) that performs arithmetic and logical operations, comparison operations, etc. on various input values that are input from these input circuits (40), (40). ) and an output circuit (43) that receives and outputs various commands from this CPU (42), and these input circuits (40), (
40), A-D converter (41), CPU (42)
) and the output circuit (43) are connected, and this control device (39) controls each of the motors (17), (23),
(32) and (33) are controlled to start and stop, etc.
Further, the fuel pump (18) is started and stopped, and the amount of fuel sucked by the fuel pump (19) is changed and controlled.

The control device (39) controls the dryer (8) when the moisture detection sensor (5) detects the same grain moisture value as the finishing target moisture value set by operating the target moisture setting/removal (3B). ), and when the hot air temperature setting group (37) and grain type setting group (3 days) are operated, 2
The temperature of the hot air generated from the burner (3) is set by this operation and the detected outside temperature detected by the outside temperature detection sensor (7), and the hot air temperature detection sensor (16) detects the hot air temperature in the hot air chamber (13), compares the detected hot air temperature with the set hot air temperature, and if there is a difference (17), controls the fuel pump (19); This fuel pump (1
9) changes and controls the fuel flow rate supplied into the burner (3), and at the same time, the detected outside air temperature detected by the outside air temperature detection sensor (7) during this combustion causes the detected outside air temperature to be high. When the temperature is reached, this control '4a
The predetermined temperature value set and stored in the equipment (3!1) is changed to a high temperature, and the temperature of the heat 8L generated from the burner (3) is controlled to be higher than the set hot air temperature. , Contrary to the above, when the detected outside air temperature becomes low, the predetermined temperature value stored in the setting is controlled to be changed to a low temperature, and the temperature of the hot air generated from the burner (3) is increased. The operating device alternately controls the hot air temperature IW value in the hot air chamber (13) and the detected moisture value detected by the moisture detection sensor (5). (10) The configuration is such that the information is displayed on the display window on the front surface.

The control device (39) includes the grain temperature detection sensor (
6) and the detected grain temperature value detected by this control device (39
) and compare it with the grain temperature value of the memorized setting.
When the detected grain temperature value is equal to or higher than the set grain temperature value, this control device controls the burner (
3) is configured to control the temperature of the hot air generated from
Also, if an abnormality occurs in this grain temperature detection sensor (6) and the grain temperature is no longer detected by this grain temperature detection sensor (6), a setting is made in this control device (38) and stored. For example, the moisture detection sensor (5) detects a grain moisture value that is less than or equal to the set finishing target moisture value set by operating the target moisture setting knob (3B), or the outside air temperature When the detected outside air temperature value detected by the detection sensor (7) is equal to or higher than a predetermined outside air temperature value set and stored in the control device (39), the control device (39)
33) The temperature of the hot air generated from the burner (3) is controlled so as to be below the predetermined upper limit hot air temperature value set and memorized in In addition, when an abnormality occurs in the grain temperature detection sensor (6), the display window on the surface of the operating device (lO) displays that an abnormality has occurred.

Each setting of the operating device (10) (3B), (37), (
38) and the start switch (30), the dryer (8) is started, and at the same time hot air is generated from the burner (3) installed on the front wall plate, and this hot air is !(4), the air is sucked from the hot air chamber (13), passes through the drying chamber (2), the exhaust chamber (15), and then the exhaust fan (4).
The grains stored in the storage chamber (1) of the dryer (8) are exposed to this hot air while flowing down from the storage chamber (1) into the drying chamber (2). The dried pulp (
12) to the lower part, and the lower transfer spiral sends the grain to the collecting trough (
11) into the supply gutter (31), transported to the upper part by the hoisting machine (28) and supplied into the transfer gutter (2B), and the transfer spiral in this transfer gutter (2B). Gutter (2
6), is transferred and supplied onto the diffusion plate (27), is uniformly diffused and reduced into the storage chamber (1) by the diffusion IR (27), and is circulated and dried in the target moisture setting chamber (3B). When the moisture detection sensor (5) detects a grain moisture value that is the same as the set finishing target moisture value.

The dryer (8) is automatically stopped under automatic control by the control device (39) of the operating device (10).

During this drying operation, the grain temperature detection sensor (6) detects the temperature of the grain during circulation drying, and the detected grain temperature value detected by the grain temperature detection sensor (6) is determined by the control device ( 3
When a temperature higher than the set grain temperature value stored in 9) is detected,
The grains are dried by controlling the temperature of the hot air generated from the burner (3) so as not to rise based on the set upper limit hot air temperature value set and stored in the control device (38). In addition, when an abnormality occurs in the grain temperature detection sensor (6) and the grain temperature detection sensor (6) no longer detects the temperature of the grain during circulation drying, this abnormality can be detected by the operation device ( 10) on the display window on the surface of the moisture detection sensor (5).
The detected grain moisture value detected by the controller (39) is lower than or equal to the set grain moisture value stored in the controller (39), or the detected outside air temperature value detected by the outside air temperature detection sensor (7) is When a temperature equal to or higher than the set temperature value set and stored in the control device (39) is detected, the burner (3)
The temperature of the hot air generated is controlled to a low temperature to dry the grains.

When the grain temperature detection sensor (6) no longer detects the temperature of the grain during circulation drying, the detected moisture value detected by the moisture detection sensor (5) or the outside air temperature detection sensor (7) The temperature of the hot air generated from the burner (3) is controlled to a low temperature below the predetermined upper limit hot air temperature value to dry the grains according to the detected outside air temperature value detected by the temperature value of the grains. Since the grains do not rise abnormally, the grains do not turn to the shell side or break into pieces.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Fig. 1 is a block diagram, Fig. 2 is a partially sectional front view, Fig. 3 is a partially sectional side view, and Fig. 4 is a dryer. It is a partially enlarged front view. In the figure, (1) is a storage chamber, (2) is a drying chamber, (3) is a burner, (4) is an exhaust fan, (5) is a moisture detection sensor,
(6) indicates a grain temperature detection sensor, and (7) indicates an outside air temperature detection sensor.

Claims (1)

[Claims] A drying chamber (2) is provided below the storage chamber (1) for storing grains, and the hot air generated from the burner (3) is sent to the drying chamber (2).
The storage chamber (1) is provided with a moisture detection sensor (5) for detecting moisture in the grains during circulation drying, and a moisture detection sensor (5) for detecting moisture in the grains during circulation drying. A grain temperature detection sensor (6) for detecting grain temperature and an outside air temperature detection sensor (7) for detecting outside air temperature are provided, and the grain temperature detected by this grain temperature detection sensor (6) is a predetermined temperature. If a temperature higher than this value is detected, the temperature of the hot air generated from the burner (3) is changed and controlled so as not to rise above a predetermined upper limit hot air temperature value, and if an abnormality occurs in the grain temperature detection sensor (6), Grain temperature detection sensor (6)
When the temperature of the grain is no longer detected, either the moisture value of the grain detected by the moisture detection sensor (5) is lower than the predetermined moisture value, or the temperature of the outside air temperature detection sensor (7) is detected.
) is provided with a hot air temperature control device that changes and controls the temperature of the hot air generated from the burner (3) to below the predetermined upper limit hot air temperature value when the outside air temperature detected by the burner (3) is detected to be above a predetermined temperature value. Features a grain drying control system for grain dryers.