JPS6361156A - Grain moisture calculation system of grain moisture measuring device - Google Patents

Abstract

PURPOSE:To accurately control drying by reducing the variation of moisture, by a method wherein the number of times of the detection of an average moisture value are increased when the moisture speck value of grain detected during one recirculation of the grain in a dryer is a predetermined value or more to calculate a moving average value. CONSTITUTION:Grain is allowed to fall from a storage chamber 7 to a drying chamber 2 and hot air is exhausted from an exhaust fan 12 to dry the grain. The dried grain is collected in a grain gathering through 9 to be raised by a grain lifter 16 and sent to the storage cham ber 7 to be recirculated. A grain moisture detector 3 is provided in the grain lifter 16 and one recirculation of the grain in drying is detected by a charge amount sensor 8. In the moisture detector 3, for example, an average moisture value is detected from 36 grains and this value is detected four times to be calculated as a moving average value. When the detected moisture speck value of the moving average value during one recirculation of the grain is a predetermined value or more, the detection of the average moisture value is in creased to 6-8 times by an operational controller to operate the moving average value. Since the number of times of the detection of the average moisture value are increased when the moisture speck value is large to operate the moving average value, the irregularity of moisture is reduced and drying can be accurately controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a grain moisture calculation method for a grain moisture meter, and is used as a grain moisture calculation method for a grain moisture meter used in a grain dryer. Available.

Conventional technology Conventionally, grains flowing down a drying chamber are generated from a burner.
While drying the grains by exposing them to hot air, a grain moisture measuring device is operated at predetermined time intervals to detect the moisture value of a predetermined number of grains. This method calculates the average moisture value, calculates a moving average value using a predetermined number of average moisture values obtained by this calculation, and displays the moving average value obtained by this calculation on a display device as the displayed grain moisture value. Yes, the moving average value is calculated.The average moisture value is always a constant number.The moving average value is calculated using a constant number.The problem that the invention aims to solve.The grains flowing down the drying chamber are exposed to hot air generated from a burner to dry them. While repeating circulation drying, a grain moisture measuring device is operated at predetermined time intervals to detect the moisture value of a predetermined number of grains. Calculate the average value, calculate a moving average value using a predetermined number of average moisture values obtained by this calculation, use the moving average value obtained by this calculation as the displayed grain moisture value, and display this displayed grain moisture value. In the form displayed on the device, when there are many moisture spots in the drying grain, the moving average value is used for calculation.If this predetermined number of average moisture values is small, the moving average value will vary. However, if this highly variable moving average value is displayed on the display device as the displayed grain moisture value, the displayed displayed grain moisture value may fluctuate greatly, which may cause the drying operator to become suspicious. Ta.

Means for Solving the Problems This invention comprises a drying chamber (2) in which grains are dried by hot air from a burner (1) while flowing down;
2) The grains being circulated are operated at predetermined time intervals to detect the moisture value of a predetermined number of grains, and the average value of the detected moisture values detected by the predetermined number of grains is calculated, and the average moisture value obtained by this calculation is calculated. A grain moisture measuring device (3) is provided which calculates a predetermined number of moving average values and uses the moving average value obtained by this calculation as a displayed grain moisture value, and also displays the displayed grain moisture value obtained by this calculation. In a dryer equipped with a display device (4), moisture content of the grains stored in the dryer is measured while the grains circulate once! ! ! (3) detects the moisture spot value of the accommodated grains based on the detected moisture value detected, and when the moisture spot value obtained by this detection is greater than a predetermined value, the moving average value is calculated by controlling a predetermined number of average moisture values to be large. The structure of the grain moisture calculation method is characterized in that a calculation control device for calculating a moving average value is provided.

Effect of the invention For example, a grain moisture measuring device (3) is installed in a dryer for drying grains.
In the case of using a grain moisture meter (3), the grain moisture measuring device (3) is used to repeatedly perform circulatory drying in which the inside of the drying chamber (2) is exposed to hot air generated from the grain burner (1) flowing down. The moisture value of the grains inside is detected at a predetermined time interval, the moisture value of a predetermined number of grains is detected, the average value of the detected moisture values of the predetermined number of grains is calculated, and the average moisture value obtained by this calculation is calculated. A moving average value is calculated using a predetermined number, the moving average value obtained by this calculation is used as a displayed grain moisture value, this displayed grain moisture value is displayed on a display device (4), and the grain moisture measuring device (3 )
When the grain moisture value equal to the finishing target moisture value is detected, the grain drying operation is stopped.

After the grain moisture value detection starts, the moisture spot value of the stored grains is determined by the detected moisture value detected by the grain moisture measuring device (3) while the grains stored in the dryer circulate once. is detected, and when the detected grain moisture value is greater than a predetermined value, the calculation control device controls the predetermined number of the predetermined number of average moisture values used for calculating the moving average value to increase this number. A moving average value is calculated using the calculated average moisture value, the moving average value obtained by this calculation is set as a displayed grain moisture value, and this displayed grain moisture value is displayed on the display device (4).

Effects of the Invention According to this invention, the moisture spot value of the stored grain is detected by the detected moisture value detected by the grain moisture measuring device (3) while the grain stored in the dryer circulates once, and the moisture spot value of the stored grain is detected. When the detected moisture spot value is large, this predetermined number of the predetermined number of average moisture values used for calculating the moving average value is controlled to be large, and the moving average value is calculated using the increased average moisture value. The variation in this moving average value obtained by calculation is reduced, and this moving average value with reduced variation is displayed as the grain moisture value, and the display device! By displaying (4), the displayed grain moisture value does not fluctuate greatly, so the drying operator does not become suspicious, and when performing drying control using this displayed grain moisture value,
Accurate drying control is possible.

EXAMPLE The illustrated example describes a grain moisture measuring device (3) used for drying 411 (5).

A storage chamber (7) is formed in the upper part of the machine wall (6) of the dryer (5), and drying chambers (2), (2) are formed below the storage chamber (7).
), rotatable delivery valves (8), (8) are pivotally supported at the bottom of this drying chamber (2), (2), and this drying chamber (2)
), (2) A grain collection gutter (9) equipped with a transfer spiral is provided on the lower side, and an operating device t( 10) and burner (1)
The burner case (11) is equipped with an internal burner case (11), and an exhaust fan (12) is installed in the rear part, and the upper side of the storage chamber (7) is equipped with a ceiling plate (13), (13) and a transfer spiral. A transfer gutter (14) is provided, a supply port is provided in the center of the transfer gutter (14) for supplying the transferred grains into the storage chamber (7),
A diffusion plate (15) is provided below the supply port, and a plurality of filling amount sensors (58) are provided vertically on the inner wall of the storage chamber (7).

A grain raising machine (1G) is installed in the front part of the machine wall (6).

Inside, a bucket conveyor (17) belt is stretched between the upper and lower booms, and a dispensing cylinder (18) is provided between the upper end and the starting end of the transfer gutter (14) to communicate with the lower end. A supply gutter (19) is provided between the terminal end of the grain collection gutter (9) for communication, and the grain moisture measuring device (3) is provided in the vertical center of the grain hoist (16). , the packet conveyor (17
) is configured to receive grains that fall while being conveyed to the upper part in a grain gutter (20), guide them down through the grain gutter (20), and supply them into the grain moisture measuring device (3).

The box frame (21) of the grain moisture measuring device (3) includes front and rear plates,
It is formed into a box shape with upper and lower plates and left and right side plates, and within this box are supporting metals (22), (23), (24), (25).
) and partition plates (2B) and (26) are provided, and the transport roll shaft (27) is connected to the support metal (22) in the upper part of the box.
, (24) and (25), and a transfer roll (28) is fixed to one end of the transfer roll shaft (27), and a gear is fixed to the other end of the transfer roll shaft (27). 2
8) A spiral groove (28) and a deep spiral groove (30) deeper than the spiral groove (29) are provided on the outer peripheral surface, and the transfer roll (
2B) At the top, the shaft (31) is attached to the support metal (22), (
24), and a guide plate (32) is formed on this shaft (31) to have approximately the same width as the transfer roll (28), and this guide plate (32) is attached to the - side outer periphery of this transfer roll (28). The grains are fixed to the surface almost in contact with the surface, and the grains supplied from the grain trough (20) onto the transfer roll (28) are transported by the transfer roll (28) and the guide plate (32). , the grains are fed into the spiral groove (29) one by one, and the spiral groove (29
), and is fed onto a triangular guide plate (33) below the end, where the grains are guided downward and detected by detection rolls (34), (
34) The remaining grains that are supplied upward and are not fed into the spiral groove (28) leak from the spiral groove (30).

The detection roll (30, (30 is the support metal (24),
Detection roll shaft (35) rotatably supported by (25)
, (35) is fixed to one end, each gear is fixed to the other end, and this detection roll (30, (30) is fixed to one end of the spiral groove (30).
The grain supplied from 28) is compressed and crushed, and at the same time, the moisture value of the crushed grain is detected.

The cleaning roll shafts (3B) and (36) are connected to the support metal (23) on the lower side of the detection rolls (34) and (34).
, (fixed at 20, this cleaning roll shaft (3B),
Attach cleaning metals (37) and (37) to (3B),
The cleaning metals (37), (37) are composed of a scraper and a brush, and the detection roll (37) is rotatably driven.
34), (34) This is a configuration for removing the crushed grains for which moisture has been detected adhering to the outer peripheral surface.

The cleaning metal (37), the partition plate (2) on the lower side of (37)
8), said support metal (22), (24) between (2B)
An inclined plate (38) is provided which is connected to the inclined plate (38).
38) receives the crushed grains whose moisture has been detected by the detection rolls (34) and (34) and the grains leaking from the spiral groove (3o), and guides them down by this inclined plate (38). It is configured to reduce and supply into the shell raising machine (18), and the dryer (
5) It has a structure in which the grains are circulated simultaneously with the grains being dried.

A motor (38) is provided on the support metal (25) in the upper part of the box frame (21), a gear is fixed to the shaft end of the motor (38), and this gear and the transfer roll shaft (27) are connected to each other.
) and the detection roll shaft (+5);
The gears (35) are configured to mesh with each other, and the motor (39) rotates when an electrical measurement signal is transmitted from the operating device (10).
) is configured to rotate each part of the grain moisture measuring device (3).

The operating device (10) is box-shaped, and the surface plate of the box has a lining work start switch (40) for starting and stopping the dryer (5) for each work, and a drying work start switch. (41), discharge work start switch (42)
, a stop switch (43), a finishing target moisture setting knob (44) for setting the finishing target moisture value of the grain, and the burner (1).
) is a hot air temperature setting machine that sets the temperature of hot air generated from (
45) and a display that alternately displays the detected grain moisture value detected by the grain moisture measuring device (3) and the hot air temperature detected by the hot air temperature sensor 4-(54) generated from the burner (1). The configuration includes a device (4), and a control device (4) inside.
6) and a calculation control bag (47).

The calculation control bag 21 (4?) is the starting switch (41
) and an input circuit (48) into which the operation of the setting machine (44) is input; an input circuit (59) into which the detection of the filling amount sensor (58) is input; and the grain moisture measuring device (3).
An A-D converter (4
9), an input circuit (50) into which the converted value converted by this A-D converter (49) is input, each of these input circuits (
A CPU (51) that performs arithmetic and logical operations, comparison operations, etc. on various input values input from
), and an output circuit (52) that receives and outputs various commands from the CPU (51).

The control device (4B) controls each starting switch 2,000 (40).
, (42), an input diagram lj& (53) where the operations of the stop switch (43) and the setting machine (45) are input.
, the detected hot air temperature detected by the hot air temperature sensor (50) that detects the temperature of the hot air generated from the burner (1) is
A-D converter (55) to convert, this A-D converter (
An input circuit (5B) to which the converted value converted in 55) is input.
), the CPU (51) performs arithmetic and logical operations, comparison operations, etc. on various input values input from these input circuits (53) and (56), and receives various commands from this CPU (51). This configuration includes an output circuit (57) for outputting.

The calculation control device (47) is the starting switch (41).
When the operation of the setting machine (44) is input, the detection of the tensioning amount sensor (58) is input, and the operation of the setting machine (45) is input to the control device (4G). , an electrical measurement signal is transmitted from the operating device 2t (10) at predetermined time intervals, and this transmission causes the motor (38) to
rotates, the grain moisture meter (3) operates, and the CP
The moisture value of the number of grains set and stored in U (51), for example 36 grains, is detected, and the average value of the detected moisture values of these 36 grains is calculated.

When this calculated average moisture value is detected four times.

The moving average value of these four times is calculated, and the first displayed grain moisture (a) is calculated, and the moving average value of the four times of the average moisture value detected sequentially from the second time onwards is calculated. The moving average value is used as the displayed grain moisture value, and this displayed grain moisture value is displayed on the display device (4), and the dryer (5) is The amount of grain accommodated in the container is detected, one cycle time of the accommodated grain is detected based on this detected amount, and the maximum detected moisture value detected by the grain moisture measuring device (3) within this detection time is determined. The moisture spot value of the accommodated grain is detected by comparing the minimum value with The displayed grain moisture value was obtained by calculating the moving average value of the four times.
At the 8th time, the calculation control device (47) calculates a moving average value of the average moisture values of 6 to 8 times, and the moving average value obtained by this calculation is used as the displayed grain moisture value. It is configured to display the displayed grain moisture value on the display device (4),
These numerical values set and stored in the CPU (51) are configured to store optimal numerical values, and the grain moisture value that is the same as the finishing target moisture value set by operating the setting machine (44) is set. When the grain moisture meter (3) detects it, the dryer (
5) is configured to automatically stop the start switch (41
) is configured to rotate each motor of this dryer (5), which rotates the parts necessary for performing drying work in the dryer (5).

The control device (46) includes the start switch (40),
When the operation (42) is input, each motor of this dryer (5), which rotationally drives the parts necessary for performing tensioning work and discharging work in the dryer (5), rotates. Also, the detected hot air temperature detected by the hot air temperature sensor (54) that detects the hot air temperature generated from the burner (1) is compared with the set hot air temperature set by operating the hot air temperature setting knob (45). If they are different, the burner (1
) is configured to control the fuel pump (80) that supplies fuel to the fuel pump (60) and change the amount of fuel sucked by the fuel pump (60).

When performing grain drying work, operate each setting knob (44), (45) of the operating device (10) to a predetermined position,
By operating the drying work start switch (41),
At the same time as the dryer (5) starts, hot air is generated from the burner (1), and this hot air is passed through the drying chamber (2) and sent to the exhaust fan (
The grains stored in the storage chamber (7) are suctioned and exhausted by the step 12).

While flowing down from this storage chamber (7) into the drying chamber (2), it is exposed to this hot air and dried, and is fed to the lower part by a feeding valve (8) and supplied into the grain collection gutter (9), This grain collection gutter (9
) is transferred to and discharged into the supply gutter (18), transported to the upper part by the packet conveyor (17), and sent to the dispensing tube (
18) into the transfer gutter (14), and is transferred and supplied onto the diffusion plate (15) by the transfer spiral in the transfer gutter (14), and the diffusion plate (15) supplies the liquid into the storage chamber (7). During this drying process, grains that fall from the packet conveyor (17) while being conveyed to the upper part by the packet conveyor (17) are dried by repeating the circulation of evenly dispersing and reducing the grains. (20), the receiving grain is fed from the grain trough (20) onto the transfer roll (28) of the grain moisture meter (3).

The supplied grains are controlled by the motor (39) of the grain moisture meter (3) being rotated by the electrical measurement signal transmitted from the operating device (10) at predetermined time intervals.
38) rotates each part of the grain moisture measuring device (3), and the transfer roll (28) and guide plate (32) move the grain into the spiral groove (29) of the transfer roll (28). The supplied grains are fed one by one, transferred along the spiral groove (29), and supplied from the end onto the downstream guide plate (33), where they are guided downward and detected. is fed onto the rolls (34), (34), and this detection roll (3
At the same time, the grains are crushed under pressure by the outer peripheral surface of 0, (34), and the moisture value of the crushed grains is detected, and this detection process is repeated and the setting knob (44) is operated. When the grain moisture measuring device (3) detects a grain moisture value that is the same as the set finishing target moisture value, the calculation control device (47) of the operating device (lO) automatically controls the drying machine (5). ) will automatically stop.

After starting this drying work, while the stored grains in the storage chamber (7) circulate once, the moisture content of the stored grains is determined by the detected moisture value detected by the grain moisture measuring device (3). When a moisture spot value is detected and the detected moisture spot value is large, this predetermined number of the predetermined number of average moisture values used for calculating the moving average value is increased, and the moving average value is calculated using this increased average moisture value. is calculated, and the moving average value obtained by this calculation is displayed on the display device (4) as the displayed grain moisture value.Contrary to the above, when the detected moisture spot value is small, a predetermined number of average moisture values are decreased. Then, a moving average value is calculated based on this decreased average moisture value, and the moving average value obtained by this calculation is displayed on the display device N(4) as the displayed grain moisture value.

The moving average value is calculated by increasing or decreasing the number of average moisture values for calculating the moving average value depending on the magnitude of the moisture spot value of the grain during drying, and the moving average value obtained by this calculation. By displaying this on the display device (4), even when the moisture spot value of the dried grain is large, the displayed numerical value will not change greatly.

[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 flowchart, Fig. 3 is a side sectional view, Fig. 4 is a rear view, and Fig. 5 is a partial sectional view. FIG. 6 is an enlarged front view of a portion of the dryer. In the figure, reference numeral (1) indicates a burner, (2) a drying chamber, (3) a grain moisture measuring device, and (4) a display device.

Claims (1)

[Claims] There is a drying chamber (2) in which grains are dried by hot air from a burner (1) while flowing down, and the grains circulated to this drying chamber (2) are operated at predetermined time intervals to maintain the moisture content of a predetermined number of grains. Detect a predetermined number of grains, calculate the average value of the detected moisture values, calculate a moving average value of a predetermined number of the average moisture values obtained by this calculation, and use the moving average value obtained by this calculation as the displayed grain moisture value. In a dryer equipped with a grain moisture measuring device (3) that displays the grain moisture value obtained by this calculation, and a display device (4) that displays the displayed grain moisture value obtained by this calculation, the grains stored in the dryer are circulated once. In the meantime, the moisture spot value of the stored grain is detected based on the detected moisture value detected by the grain moisture measuring device (3), and when the moisture spot value obtained by this detection is above a predetermined value, a moving average value is calculated. A grain moisture calculation method characterized by comprising a calculation control device that calculates a moving average value by controlling a predetermined number of values.