JPS6391478A - 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 repeatedly exposed to hot air generated by a burner to dry them, and a moisture sensor detects the moisture value of the grains during drying. The drying speed of the grains is detected based on the value, and the drying is performed while controlling the temperature of the hot air generated from the burner so that the detected drying speed and the set drying speed are the same. This method stopped grain drying when a grain moisture value equal to the set finishing target moisture value was detected.

Problems to be Solved by the Invention While repeating the cycle of drying grains flowing down a drying chamber by exposing them to hot air generated by a burner, a moisture sensor detects the moisture content of the grains during drying. The drying speed of the grains is detected based on the detected moisture value, and the drying speed is adjusted so that the detected drying speed and the set drying speed are the same.
Drying is carried out while controlling the temperature of the hot air generated from the burner, and when the moisture sensor detects a grain moisture value that is the same as the set finish target moisture value, the dryer is stopped to stop drying the grains. This dryer is set to dry the grains quickly, and if the outside air humidity is low during drying, the moisture value of the dried grains may be lower than the final target moisture value after drying. This can lead to a state of overdrying with low moisture content, and in such a state, the dried grains may develop shells and the quality of the grains may deteriorate.

Means for Solving the Problems The present invention has a drying chamber (2) in which grains are dried by hot air generated from a burner fil while flowing down, and a humidity sensor (3) that detects outside air humidity. A moisture sensor (4) detects the moisture value of the grains that are circulated and dried into the drying chamber (2) and the drying rate of the grains
) and which stops drying when the moisture sensor (4) detects a grain moisture value that is the same as the finishing target moisture value, the detected drying speed detected by the moisture sensor (4) and The grain is characterized in that it is provided with a stop control device that stops the drying of the grain at a predetermined value before the finishing target moisture value of the grain based on the detected outside air humidity detected by the humidity sensor (3). The drying control method is used.

Effect of the Invention While repeating the cycle of drying the grains flowing down the drying chamber (2) by exposing them to hot air generated from the burner (1), the moisture value of the drying grains is measured using the moisture sensor (4). detect,
The drying speed of the grains is detected based on the detected moisture value, and the temperature of the hot air generated from the burner (1) is controlled so that the detected drying speed and the set drying speed are the same. When the grain is dried and the moisture sensor (4) detects a grain moisture value that is the same as the set finish target moisture value, the dryer is stopped to stop drying the grain.

During this drying process, the drying speed of the grains is set to be faster, and if the detected outside air humidity detected by the humidity sensor (3) during this drying process is low, it will be lower than the set finishing target moisture value. When the grain moisture value during drying reaches a predetermined high moisture value state, the dryer is stopped by the stop control device to stop drying the grains.

Effects of the Invention According to the present invention, the drying speed of grains can be set to be faster, and when the outside air humidity detected by the humidity sensor (3) during this drying operation is low, the set finish target moisture content can be increased. By stopping the dryer and stopping the drying of the grain before this value, the progress of the moisture value of the dried grain was predicted in advance and the drying of the grain was stopped. Even if the drying state of the dried grains progresses, the dried grains will not become overdried because the drying state will be the same as the set finishing target moisture value, and as a result, the grains will turn to the shell side and the quality will deteriorate. In the illustrated example, the dryer wall (6) of the dryer (5) has a rectangular shape in plan view that is long in the front and back direction, and consists of an auxiliary wall plate and left and right wall plates, and this front wall plate has this dryer wall plate. The burner case (8) containing the operating device (7) for starting and stopping the machine (5) and the burner (11) is sunk inside, and the wind machine (91) is mounted on the rear wall plate. be.

At the center of the lower part of the machine wall (6), there is provided a grain collection 1 (101) with an internal transfer spiral extending in the front-rear direction, and on the upper side of this grain collection gutter 001 there is a freely rotatable feed-out valve (11) at the bottom. Drying chambers (2) which are pivotally supported are arranged side by side and communicated with each other, and a hot air chamber (15) is formed between the inside of this drying chamber +23 and (2), which is communicated with the burner (1). , the drying room (2)
, (2) An exhaust chamber (131, (E) is formed on the outside and communicated with the exhaust fan (9), and the hot air chamber FIE
A hot air temperature sensor (1 and 9) is installed inside the hot air chamber fIZ to detect the hot air temperature inside the hot air chamber fIZ.

A motor (111i1) is provided at the lower part of the rear wall plate, and this motor (19) rotates the transfer spiral, the delivery valve (11), the exhaust fan (9), etc.

A storage chamber (Illil) is formed on the upper side of the drying chamber (2), (2), and a ceiling plate (1 force, (Illil) is formed on the upper side of this storage chamber (IE).
η and a transfer gutter (11) equipped with a transfer spiral;
A supply port is provided for supplying the inside, and a diffusion plate (191) is provided below the supply port.

A grain raising machine 1211 is installed in the front part of the j■i wall plate, and a packet conveyor is installed inside! A +1 belt is stretched between the L lower pulleys, a dispensing tube (225 is provided between the upper end and the starting end of the transfer gutter fl A supply gutter (toward) is provided between the grain raising machine and a motor 124) is provided at the top of the grain hoist.
belt.

The transfer spiral in the transfer gutter (1111) and the spreader plate (l+
3, etc., and a moisture sensor (41) is provided in the vertical center of this grain raising machine.

The moisture sensor (4) receives grains that fall while being conveyed to the upper part by the packet conveyor 21), is supplied into the moisture sensor (4), and the supplied grains are compressed by the grain moisture detection section. At the same time as the grain is crushed, the moisture value of the crushed grain is detected, and the drying rate of the grain is detected based on the detected moisture value. The transmission of electrical measurement signals at intervals rotates a motor 4 provided in this moisture sensor (4), and the rotation of this motor 4 operates each part of this moisture sensor (4) to measure the grain. This is a configuration that detects moisture values.

The burner case (8) includes a fuel pump I2 that supplies fuel into the burner (1), a blower (5) that supplies combustion air, and a motor (c) that rotationally drives this blower (n). This is the configuration provided.

The operating device (7) is box-shaped, and the front panel of the box has a start switch C for starting and stopping the dryer (5). I, stop switch O1, target moisture setting setting for setting the finishing target moisture value 0υ, drying speed setting setting for setting the drying speed ■, hot air temperature setting setting for setting the temperature of the hot air generated from the burner fl). A display window (to) is provided that alternately displays the detected moisture value detected by 33 and the moisture sensor (4) and the detected hot air temperature detected by the hot air temperature sensor (14), and the outside air humidity is detected on the bottom outside. The humidity sensor (3) is provided with a humidity sensor (3), and a control device OS and a stop control device OQ are provided inside.

The stop control device OQ converts the detection values detected by the moisture sensor (4) and the humidity sensor (3) from A to D.
-D converter-1 An input circuit into which the converted value converted by this A-D converter is input, an example of an input circuit in which the setting operation is manually performed, and each of these input circuits (G) , (to) performs arithmetic and logical operations, comparison operations, etc. on various input values input from (to), and an output circuit (61) that receives and outputs various commands from this CPUH ().

The control device Oe includes an A-D converter 6 which converts the detection value detected by the hot air temperature sensor 04 from A to D.

An input circuit 83 to which the converted value converted by the A-D converter 6 is input; an input circuit to which the operations of the switches 12'J and C11 and the settings 03 are input; .

Each of these input circuits! 43. The cpU performs arithmetic and logical operations, comparison operations, etc. on various input values input from f4'0.
e1[), and an output circuit ←9 that receives and outputs various commands from the CPU (a).

In the stop control device oQ, the operations of the various modes (to), 03, and the start switch 4 are input to the control device 09, and the operation of the target water setting setting Oυ is input to the stop control device OQ, Furthermore, when the detection values detected by the sensors (31, (4, 1) are input, the drying speed of the grains is calculated using the formula 8 set and stored in the CPUHI,
When the moisture sensor (4) detects a grain moisture value that is the same as the set finishing target moisture value set by operating the target moisture setting value 0υ, the rotation of the motor 4 of this moisture sensor (4) is controlled to stop. The moisture sensor (4) is configured to stop detecting the moisture value of the grain, and the drying speed setting can also be changed.
The operation position of □□ is set and stored in the cpU (g), for example, a position of 1% or more, and the humidity sensor (3)
) is set and stored in the CPUm, for example, if the detected outside air humidity is 5.0% or less, then from the set finish target moisture value set by repeating the target moisture setting value 0υ, For example, 1% set and stored in this CPU (a)
The configuration is such that the rotation of the motor 9 of the moisture sensor (4) is previously stopped and the moisture value detection of the grain is stopped by this moisture sensor (4), and this is set and stored in the CPU 1'IQ. These numerical values are stored as numerical values that remain the same as the set finishing target moisture value even if the drying state of the dried grains progresses.

The control device 09 inputs the operation of the finishing target moisture setting angle 0υ to the stop control device aQ, and the control device 0
When the operation of 03 is inputted to each setting (to) and the start switch (to) is operated, each of the motors (19
, C241, I29, (Company) is started, the fuel pump Qe is started, each part of the dryer (5) is started to dry the grains, and the moisture sensor (4) is configured to dry the grains. This dryer (5) is configured to automatically stop when the moisture value detection of grains is stopped, and at the beginning of drying work, the set hot air temperature set by operating the hot air temperature setting parameter η and the hot air temperature sensor 04 are set. The detected hot air temperature is compared with the detected hot air temperature detected by the moisture sensor (4), and if there is a difference, the fuel pump 29 is controlled so that they are the same, and the amount of fuel sucked by this fuel pump (to) is changed. ) calculates the drying speed of the grains based on the detected moisture value, and compares the drying speed obtained by this calculation with the set drying speed set by operating the drying speed setting. , the fuel pump I2e is controlled to change the amount of fuel sucked by the fuel pump QI12 so that the fuel pumps QI12 and QI12 are the same when they are different.

By operating each setting C111, (To), and 03 of the operating device (7) to a predetermined position and operating the start switch (To), the dryer (5) will start and at the same time the burner (1) will start. ), this hot air is ventilated from the hot air chamber (17J to the drying chamber (2), then through the exhaust chamber (I31 to the exhaust fan (9)).
) is used to suck and exhaust air.

The grains stored in the storage chamber (1e) of the dryer (5) are exposed to this hot air and dried while flowing down from the storage chamber (IS) into the drying chamber (2), and are dried by the feeding valve (1B). The grain is fed to the lower part and fed into the grain collection gutter (1), and this grain collection gutter tl[ll
The grain is transferred and discharged from this collecting trough via the feeding trough (23) into the grain hoisting machine (toward) by the transport spiral inside, and is then transferred to the packet conveyor 21.
) is transported to the upper part via the dispensing tube Qδ and supplied into the transfer gutter I13, and is transferred to the diffusion plate (1gl) via the transfer spiral in the o'.

The grains are evenly diffused and reduced into the storage chamber fIQ, circulated and dried, and fall while being conveyed to the upper part by the packet conveyor 211. The grains are received by the moisture sensor (4) and supplied into the moisture sensor (4). The grain moisture detection section in the moisture sensor (4) simultaneously crushes the supplied grains under pressure and simultaneously detects the moisture value of the crushed grains.

The drying rate of the grains is detected based on this detected moisture value.

Set the burner (1
) The grains are dried by controlling the temperature of the hot air generated from the dryer, and the moisture sensor (1) sets the grain moisture value to be the same as the set finishing target moisture value set by operating the target moisture setting hunting GO. When detected, the drying @f5) is automatically controlled by the control device Og and the stop control device of the operating device (7) to automatically stop the drying process.

During this drying operation, the operating position of the drying speed setting knob (support) for setting the drying speed of the grains is moved to a position where the drying speed of the grains becomes faster. When the detected outside air humidity detected by the sensor (3) is low humidity, the moisture value of the grains being dried is a predetermined value higher than the set finishing target moisture value set by operating the target moisture setting hunting OD. At this point, the dryer (5) is automatically stopped by the control device o9 of the operating device (7) and the stop control device (to).

During drying work, the desired finish is set by operating the target moisture setting hole 0)) according to the operating position of the drying speed setting hole and the detected outside air humidity detected by the humidity sensor (3). By stopping the dryer (5) and stopping drying of grains before the target moisture value is reached, it is possible to always obtain dried grains of good quality.

[Brief explanation of the drawing]

The drawings show one 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, with a portion shown, and Fig. 4 is a partial front view of the dryer. FIG. 5 is an enlarged front view of a portion of the dryer. In the figure, (1) is a burner, (2) is a drying chamber, (3) is a humidity sensor, and (4) is a moisture sensor.

Claims (1)

[Claims] The drying chamber (2) has a drying chamber (2) in which grains are dried by hot air generated from a burner (1) while flowing down, and a humidity sensor (3) that detects outside air humidity.
It has a moisture sensor (4) that detects the moisture value of the grains that are circulated and dried and the drying speed of the grains. In a grain dryer that stops drying by detecting a value, the finished target moisture content of the grain is determined based on the detected drying rate detected by the moisture sensor (4) and the detected outside air humidity detected by the humidity sensor (3). 1. A grain drying control system characterized by comprising a stop control device that stops drying grains before a predetermined value.