JPS6396472A - Cereal grain drying control system of cereal grain drier - Google Patents

Abstract

(57) [Abstract] 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 flowing down a drying chamber are exposed to a set hot air temperature generated from a burner from the start of drying to the end of drying, and dried by being exposed to this hot air, and the moisture value of the grains during drying is is detected by the moisture sensor, and when the moisture sensor detects a grain moisture value that is the same as the FJ standard moisture value, the dryer is stopped.
This method detects the grain temperature during drying and controls the set hot air temperature generated from the burner based on this detected grain temperature. There is no method for drying grains by controlling the temperature of the hot air generated from the burner depending on the time until the grains are hulled.

Problem to be Solved by the Invention The grains flowing down the drying chamber are exposed to the set hot air temperature generated by the burner from the start to the end of drying, and are dried by the drying process. The moisture value is detected by a moisture sensor that operates at predetermined time intervals, and when this moisture sensor detects a grain moisture value that is the same as the finishing target moisture value, drying of the grains is stopped. If this grain is hulled within a short period of time after the hulling process is completed, the grain will sag during the hulling process due to the high temperature of the grain, which will cause the grain to sag. Quality sometimes deteriorated.

Means for Solving the Problems This invention provides a drying chamber (2) in which grains are dried by a burner (1) while flowing down, and a moisture value of the grains circulated to this drying chamber (2) at a predetermined level. A moisture sensor (3) that detects moisture at time intervals and a grain temperature sensor (4) that detects the temperature of grains during drying are provided, and the detected grain temperature detected by this grain temperature sensor (4) has an upper limit. A hulling time setting device (5) is provided to set a value to control the temperature of the hot air generated from the burner (1), and to set the time from the end of grain drying to the start of hulling work. In the dryer, the grain temperature limiter value is set by the setting operation of the hulling timing setting device (5) and the detection of a grain moisture value that is a predetermined value higher than the grain finishing target moisture value by the moisture sensor (3). The grain drying control system is characterized by being equipped with a grain temperature control device that changes the temperature to a predetermined low temperature.

Effect of the Invention The grains flowing down in the drying chamber (2) are exposed to the set hot air temperature generated from the burner (1) and dried, and the moisture value of the grains during drying increases. Moisture sensor (3)
When this moisture sensor (3) detects grain moisture equal to the finishing target moisture value, drying of the grains is stopped.

During this drying work, the grain temperature of the grains being dried is detected by the grain temperature sensor (4), and if the detected grain temperature is equal to or higher than the set upper limiter value, the set hot air is generated from the burner (1). The temperature is lowered by a predetermined temperature, the set hot air temperature becomes a low temperature, and the grains are dried using this low temperature hot air so that the detected grain temperature becomes below the upper limiter value of the set grain temperature, and the drying work is also carried out. At the start of the process, a hulling timing setting device (5
), when the moisture sensor (3) detects a grain moisture value higher than the finishing target moisture value by a predetermined value, the upper limiter value of the set grain temperature is lowered by a predetermined temperature, and the grain temperature is adjusted to this lowered grain temperature. The set hot air temperature generated from the burner (1) is lowered by a predetermined temperature so that the detected grain temperature detected by the temperature sensor (4) becomes the same, and this set hot air temperature becomes a low temperature. Dry the grains.

Effects of the Invention According to this invention, the grain temperature of grains during drying can be measured using a grain temperature sensor (
4), and sets the upper limiter value of the detected grain temperature detected by this grain temperature sensor (4), and when the moisture sensor (3) detects a grain moisture value that is a predetermined value higher than the finishing target moisture value, The limiter value that limits the set grain temperature is lowered by a predetermined temperature, and the burner (1) generates heat so that the detected grain temperature detected by the grain temperature sensor (4) corresponds to the lowered grain temperature. By controlling the set hot air temperature to a low temperature, the grain temperature of the drying grains is controlled to gradually become lower than before the end of drying, so that the grain temperature of the dried grains is kept low. Therefore, even if the hulling operation is performed within a short period of time after drying, the grains will not sag, and the quality of the grains will not deteriorate.

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) is provided with an operating device (8) for starting and stopping the burner (1), and a burner case (9) in which the burner (1) is housed, and an exhaust fan (10) is provided 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 (11) equipped with a transfer spiral is provided, and a drying chamber (2) in which a feed valve (12) is rotatably supported on the lower part is arranged in parallel and communicated with the grain collection gutter (11) above the grain collection gutter (11). A hot air chamber (13) is formed between the insides of the drying chambers (2) and (2), and is communicated with the burner (1). A sensor (14) is provided, and ventilation chambers (15), (2) are provided outside the drying chamber (2), (2).
15) and communicates with the exhaust fan (10), a motor (16) is provided at the lower part of the rear wall plate, and the motor (16) is connected to the exhaust fan (10).
) to rotate the transfer spiral, the delivered pulp (12), (12), the exhaust fan (10), etc.

A fuel pump (17) having a fuel valve is provided on the outside of the f plate of the burner case (9), and when the fuel valve is opened and closed, the fuel pump (17) sucks fuel from the fuel tank (18), and the It is configured to supply fuel into the burner (1), and a blower (18) and a motor (20) that rotationally drives this blower (19) are installed on the outside of the upper plate, and this blower (+9) supplies combustion air. It is configured to supply into the burner (1).

A storage chamber (21) is formed above the drying chambers (2), (2), and a ceiling plate (22), (
22) and a transfer gutter (23) equipped with a transfer spiral;
The central part of this transfer gutter (23) stores the transferred grains in this storage chamber (
21) A supply port for supplying the inside is provided, and a diffusion ffi (24) is provided below this supply port, and the front wall plate forming this storage chamber (21) is provided with a diffusion (2
1) A window is provided to visually check the amount of grain stored inside the container, and a numerical value is provided on the side of the window to indicate whether or not the grain has been stored.

A grain raising machine (25) is installed in the front part of the machine wall (7), and inside is a packet conveyor (2B) stretched between the upper and lower pulleys of the belt tractor, and between the upper end and the starting end of the transfer gutter (23). A dispensing tube (27) is provided for communication between the lower end and the terminal end of the grain collection gutter (11), and a supply gutter (28) is provided for communication between the lower end and the terminal end of the grain collection gutter (11). There is a grain temperature sensor (4 days) that detects the grain temperature of the grains passing through this supply gutter (2 days).
), and a motor (29) is provided above the grain raising a (25), and this motor (29) moves the packet conveyor (2).
B) A configuration in which the belt, the transfer spiral in the transfer gutter (23), the diffusion plate (24), etc. are rotationally driven, and a moisture sensor (3) is provided in the center of the downward direction. It is.

The moisture sensor (3) is connected to the packet conveyor (26).
receives the grains that fall while being transported to the upper part, supplies the grains to the moisture sensor (3), crushes the supplied grains under pressure, and at the same time detects the moisture value of the crushed grains. This moisture sensor (3) is connected to the operating device (8).
) is installed in this moisture sensor (3) by transmitting an electrical measurement signal at predetermined time intervals.
rotates, and the rotation of this motor (30) starts each part of this moisture sensor (3) 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 (31) for starting and stopping the dryer (6), a stop switch (32), and grain finishing. A target moisture setting device (33) for setting the target moisture value, a hot air temperature setting device (34) for setting the hot air temperature, a hulling time setting device (5) for setting the period from the end of drying to the hulling operation, and A display window (35) is provided that alternately displays the detected moisture value detected by the moisture sensor (3) and the detected hot air temperature detected by the hot air temperature sensor (14), and a control device (311+) and grain The configuration includes a temperature control 91 device (37), and each setting device (33), (34) and hulling timing setting device (5) are rotary switch type, and the setting device (33) is a rotary switch type. When the operation is performed to the position of the numerical value of the finishing target moisture value, the finishing target moisture value is set, and the setting value (34) is set according to the amount of grain stored in the storage chamber (21) of the window of the front wall plate. When operated to the same position as the numerical value, the temperature of the hot air generated from the burner (1) is set, and the hulling timing setting device (5) is moved to the displayed position, for example, immediately,
When the operation is set to 2 hours, 6 hours, and 24 hours, the time from the end of drying to the hulling operation is set.

The grain temperature side control device (3?) is connected to the hot air temperature sensor (14).
) and the detected value detected by the grain temperature sensor (4) is A-
A-I) converter (38) that performs D conversion, an input circuit (39) into which the change value converted by this A-D converter (3B) is input, the setting hole (34), and the huller. an input circuit (40) into which the operation of the timing setting device (5) is input; a CPU (41) which performs arithmetic and logical operations and comparison operations on each input value input from each of these input circuits (39) and (40);
The configuration includes an output circuit (42) that receives and outputs various commands from the CPU (41).

Said control? c22 (38) is an A-D converter (43) that converts the detection value detected by the moisture sensor (3) into A-D.
, an input circuit (44) into which the converted value converted by the A-D converter (43) is input, and each of the switches (31).
, (32) and an input circuit (45) into which the operation of the setting search (33) is input, each of these input circuits (44), (
This CPU (41) performs arithmetic and logical operations, comparison operations, etc. on various input values input from the CPU (45);
) output circuit that receives various commands from
48), the starting switch (31) is connected to the control device 22 (3B), which is the grain temperature control device (37).
, when the operation of the setting sowing (33) is input, and the operation of the paddy timing setting device (5) and the setting sowing (34) is input to the grain temperature control device (37), the burner (
The temperature of the hot air generated from the dryer (6) is set, and the temperature of the hot air generated from the dryer (6) is set.
) is started, the set hot air temperature is generated from the burner (1), the grain temperature sensor (4) detects the grain temperature during drying, this detected grain temperature is input, and the CPU (41)
For example, if the upper limit value of grain temperature set and stored is 38 degrees, compare this 38 degrees with the detected grain temperature and determine if the detected grain temperature is as high as 40 degrees. If so, the number of opening and closing times of the fuel valve of the fuel pump (17) that supplies the fuel to the burner (1) is controlled to decrease so that the grain temperature reaches the set grain temperature of 38 degrees, and this fuel pump (17) sucks the grain. For example, if the set hot air temperature at this time is 50 degrees, the set hot air temperature is lowered by 3 degrees.
It is configured to control the detected grain temperature to 38 degrees, and compares the detected grain temperature with the set grain temperature to determine whether the burner (1
), the set hot air temperature set by operating the setting knob (34) is compared with the detected hot air temperature detected by the hot air temperature sensor (14), and if there is a difference. The number of times the fuel valve of the fuel pump (17) is opened and closed is changed so that the amount of fuel sucked by the fuel pump (17) and supplied to the burner (1) is changed so that It is the composition.

The control device (3B) inputs the operation of the setting grain (34) and the hulling timing setting device (5) to the grain temperature control device (37), and inputs the setting to this M control device ff1 (3B). When the operation of the socket (33) and the start switch (31) is input, each of the motors (18) of the dryer (6),
(20), (28), and (30) rotate, and this dryer (
6) is started, the moisture sensor (3) is started, the detected moisture value detected by this moisture sensor (3) is inputted, and the finishing target moisture value set by operating the setting knob (33) is set. The same grain moisture value as the moisture sensor (3)
The dryer (6) is configured to automatically stop when the grain temperature is reached, and when the hulling timing setting device (5) is operated to the immediate position, the grain temperature set and stored in the CPU (41) is changed. If you change the L limit limiter value from 38 degrees to 30 degrees, and move to the 2 hour position, it will change to 33 degrees, and if you move to the 6 hour position, it will change to 3.
The setting value changes to 5 degrees and does not change when operated to 24 hours, and the hulling time setting device 'J! ' If you operate L (5) to the immediate, 2 hour, or 6 hour positions, the moisture sensor (3) will be set! For example, when the grain temperature control device (37) detects 2% before the target moisture value, which is set and stored in the CPU (41), the grain temperature sensor (4) The detected grain temperature to be changed and set 3
The fuel pump (17) is configured to reduce the number of opening and closing times of the fuel valve of the fuel pump (17) so that the temperature does not exceed 0 degrees, 33 degrees, or 35 degrees, thereby reducing the amount of fuel sucked by the fuel pump (17). be. These numerical values and the above-mentioned numerical values are constructed by storing the best numerical values obtained from test results.

The upper limit value of the grain temperature may be set to a low temperature when the outside air temperature is low, and a high temperature when the outside air temperature is high, or when a small amount of grain is to be dried. It may be configured to change the upper limit value of the grain temperature to a low temperature, and to a high temperature when the grain temperature is large.

The dryer (6) is started and the burner (1) is turned off at the same time by operating the respective stage setting screws (33) and (34) of the operating device (8) to the predetermined positions and operating the start switch (31). The set hot air temperature is generated, and this hot air is passed from the hot air chamber (13) to the drying chamber (2), passes through the exhaust chamber (15), and is discharged to m(
10), the grains accommodated in the storage chamber (21) of the dryer (6) are removed from the storage chamber (21).
) is exposed to this hot air and dried while flowing down in the drying chamber (2), is fed out to the lower part by the feeding valve (12) and is supplied into the grain collection gutter (11), and is fed into the grain collection gutter (11). (11)
The inner transfer spiral connects this grain collection trough (11) to the supply trough (28).
The grains are transferred and supplied into the hoisting machine (25) through the packet conveyor (2B), transported to the upper part by the packet conveyor (2B), and supplied into the transfer gutter (23) via the dispensing tube (27). It is transferred and supplied onto the diffusion plate (24) via the transfer gutter (23) by a transfer spiral, and the stilling chamber (21
) and are circulated and dried. When the moisture sensor (3) detects the same grain moisture value as the finishing target moisture value set by operating the setting knob (33), the operating device (
The dryer (6) is automatically controlled by the control device (36) of 8).
4 At the start of this drying operation, operate the hulling timing setting device (5) to the predetermined positions such as immediate, 2 hours, 6 hours, etc. to automatically stop the grain being dried during this drying operation. When the grain temperature of the grain is detected by the grain temperature sensor (4) and the detected grain temperature is equal to or higher than the set upper limit value, the operation device (7)
)'s grain temperature control device (37) controls the fuel temperature supplied to the burner (1) to be reduced by a predetermined value, and changes the set hot air temperature generated from the burner (1) to a predetermined low temperature.
At this low temperature, the grains are dried so that the detected grain temperature does not exceed the upper limiter value of the set grain temperature, and the upper limiter value of the set grain temperature is adjusted depending on the operating position of the hulling timing setting device (5). The temperature of the hot air generated from the burner (1) is changed to a predetermined low temperature so that the detected grain temperature does not rise above the lowered grain temperature. Dry the grains.

The grain temperature of the grain to be dried is detected, and the grain temperature is dried to prevent it from rising to a predetermined value.
) detects a grain moisture value higher than the finishing target moisture value by a predetermined value, the upper limiter value of the set grain temperature is lowered to lower the set grain temperature value, and the grain being dried is lower than this lower set grain temperature. By drying in such a way that the temperature does not rise, the subsequent hulling operation becomes easier, and at the same time, the quality of the grains does not deteriorate during this hulling operation.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a block diagram, Fig. 2 is a flowchart, Fig. 3 is an overall front view of the dryer partially cut away, and Fig. 4 is a partial section. FIG. 5 is an enlarged front view of the dryer. In the figure, (1) is a burner, (2) is a drying chamber, (3) is a moisture sensor, (4) is a grain temperature sensor, and (5) is a hulling timing setting device.

Claims (1)

[Claims] A drying chamber (2) in which the grains are dried by a burner (1) while flowing down, and a moisture sensor (2) which detects the moisture value of the grains circulated to this drying chamber (2) at predetermined time intervals.
3) and a grain temperature sensor (
4) is provided, and an upper limiter value is set for the detected grain temperature detected by this grain temperature sensor (4) to control the temperature of the hot air generated from the burner (1). In a dryer equipped with a hulling time setting device (5) that sets the time until the start of hulling work, the setting operation of the hulling timing setting device (5) and the moisture sensor (3) are performed.
A grain drying control system characterized by being provided with a grain temperature control device that changes the grain temperature limiter value to a predetermined value lower temperature by detecting a grain moisture value that is a predetermined value higher than a grain finishing target moisture value. .