JPH0638074B2 - Grain moisture calculation method of grain moisture meter - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a grain moisture calculating method for a grain moisture measuring device, which is used as a grain moisture calculating method for a grain moisture measuring device used in a grain dryer. Available.

2. Description of the Related Art Conventionally, while the grains flowing down in the drying chamber are exposed to the hot air generated from the burner to dry them, the moisture value of the grains during circulation drying is operated at a predetermined time interval with a grain moisture meter. The moisture value of a predetermined number of grains is detected by calculating the average value of the detected moisture values detected by the predetermined number of grains, and the moving average value is calculated by the predetermined number of average moisture values obtained by this calculation. The moving average value is displayed on the display device as a display grain moisture value, and the moving average value for calculating the moving average value is always a constant number.

Problems to be Solved by the Invention While repeating the cycle drying in which the grains flowing down in the drying chamber are exposed to the hot air generated from the hanna to be dried, the moisture value of the grains during the circulation drying is measured by the grain moisture meter. It operates at a predetermined time interval to detect the moisture value of a prescribed number of particles, calculates the average value of the detected moisture values detected by this prescribed number of particles, and calculates the moving average value by the prescribed number of average moisture values obtained by this calculation. The moving average value obtained by this calculation is used as the display grain water content value, and this display grain water content value is displayed on the display device. When this predetermined number of the predetermined number of average moisture values used for the calculation of the value is small, the moving average value varies, and when the moving average value with the large variation is displayed on the display device as the display grain moisture value, the The displayed moisture content of the displayed grain is large. It may fluctuate rapidly, which may give suspicion to the drying operator.

Means for Solving the Problems The present invention is directed to a drying chamber (2) for drying the grains by hot air from a burner (1) while flowing the grains down, and the grains circulated and transferred to the drying chamber (2) for a predetermined time. Operate at intervals to detect the moisture content of a predetermined number of particles, calculate the average value of the moisture content detected by this predetermined number of particles, and calculate the moving average value of the predetermined number of average moisture values obtained by this calculation. Grain moisture measuring instrument (3) using the obtained moving average value as the display grain moisture value
In the dryer provided with the display device (4) for displaying the displayed grain moisture value obtained by this calculation, the grain moisture measuring device ( 3) The moisture spot value of the contained grain is detected by the detected moisture value detected by 3), and when the moisture spot value obtained by this detection is more than a predetermined value, the predetermined number of average water values for calculating the moving average value is controlled to be large. A grain moisture calculation method is characterized in that a calculation control device for calculating a moving average value is provided.

Effects of the Invention For example, a grain moisture meter (3) is provided in a dryer for drying grains.
In the case of using, the circulating moisture is measured by the grain moisture measuring device (3) while repeating the cyclic drying in which the drying chamber (2) is exposed to the hot air generated from the grain burner (1) while being dried. The moisture value of the inside grain is activated at a predetermined time interval to detect the moisture value of a predetermined number of grains, and the average value of the detected moisture values detected by this predetermined number of grains is calculated. A moving average value is calculated by a predetermined number, the moving average value obtained by this calculation is used as a display grain water content value, and this display grain water content value is displayed on the display device (4). )
When the grain moisture value which is the same as the finishing target moisture value is detected, the grain drying operation is stopped.

After the grain moisture value detection is started, while the grain contained in the dryer circulates once, the moisture content value of the contained grain is determined by the detected moisture value detected by the grain moisture measuring device (3). When the detected moisture content of the detected grain is greater than or equal to a predetermined value, the calculation control device controls the predetermined number of the predetermined number of average water values used in the calculation of the moving average value to increase this value. The moving average value is calculated from the calculated average moisture value, the moving average value obtained by this calculation is used as the display grain moisture value, and the displayed grain moisture value is displayed on the display device (4).

EFFECTS OF THE INVENTION According to the present 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. 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 by the increased average moisture value. The variation in the moving average value obtained by the calculation is reduced, and the moving average value with the reduced variation is displayed as the display grain moisture value on the display device (4), so that the display grain moisture value greatly changes. Since there is no need to do so, no suspicion is given to the drying operator, and when the drying control is performed based on this displayed grain moisture value, accurate drying control can be performed.

Example In addition, a figure example demonstrates the grain water content measuring device (3) used for the dryer (5).

A storage chamber (7) is formed in the upper part of the machine wall (6) of the dryer (5), and a drying chamber (2) is formed below the storage chamber (7).
(2) is provided, rotatably feeding valves (8) and (8) are rotatably provided below the drying chambers (2) and (2), and below the drying chambers (2) and (2). A grain collecting gutter (9) equipped with a transfer spiral is provided, and the dryer (5) is provided in front of the machine wall (6).
A burner case (11) having an operating device (10) for starting and stopping the burner and a burner (1) is provided, and an exhaust fan (12) is provided at the rear part of the storage chamber (7). The ceiling girders (13), (13), and a transfer gutter (14) equipped with a transfer spiral are installed, and the transfer grain is supplied to the central part of the transfer gutter (14) for supplying into the storage chamber (7). A mouth is provided, and a diffusion plate (15) is provided below the supply port, and a plurality of swelling amount sensors (58) are provided vertically in the inner wall of the storage chamber (7). It is a composition.

A grain raising machine (16) is provided in the front part of the machine wall (6), and a bucket conveyor (17) belt is stretched between the upper and lower pulleys inside the upper part and the transfer gutter (14) starting end part. A throwing pipe (18) is provided between them to communicate with each other, and a supply gutter (19) is provided between the lower end and the end of the grain collecting gutter (9) to communicate with each other, and the grain raising machine (16) The grain water content measuring device (3)
Is provided, and the grain that falls while being conveyed to the upper part by the bucket conveyor (17) is received by the grain shed (20), and this grain gutter (20)
It is configured so as to flow down and is supplied into the grain moisture measuring device (3).

The box frame (21) of the grain moisture measuring device (3) is formed in a box shape by front and rear plates, upper and lower plates, and left and right horizontal plates, and support metals (22), (23), (24) are formed in the box body. ), (25) and partition plates (26), (26) are provided, and a transfer roll shaft (27) is rotatably supported by the supporting metals (22), (24) and (25) in the upper part of the box body. The transfer roll shaft (27) has one end to which the transfer roll (28) is fixed, and the other end to which a gear is fixed. A deep spiral groove (30) deeper than the spiral groove (29) is provided, and a shaft (31) is provided on the upper part of the transfer roll (28) for the supporting metal (22).
The guide plate (32) is fixed to the shaft (31) with a width substantially the same as that of the transfer roll (28).
2) has a structure in which it is fixed to one outer peripheral surface of the transfer roll (28) in a substantially contact state, and the grains supplied from the grain shed (20) onto the transfer roll (28) are transferred by the transfer. Roll (2
8) and this guide plate (32), the particles are taken into the spiral groove (29) one by one, transferred along the spiral groove (29), and have a triangular flow-down guide plate below the end. (33) is fed up, and the grain is guided down by the downflow guide plate (33) and fed onto the detection rolls (34) and (34), and is not taken into the spiral groove (29). Residual particles are the spiral groove (30)
It is a structure that leaks from the part.

The detection rolls (34), (34) are the support metal (24),
Detection roll shaft (35), (3
5) It is fixed to one end, each gear is fixed to the other end,
The detection rolls (34) and (34) are configured to feed and crush the grains supplied from the spiral groove (29) and crush them at the same time as detecting the water content of the crushed grains.

Cleaning roll shafts (36) and (36) are fixed to the lower sides of the detection rolls (34) and (34) with the support metals (23) and (24), and the cleaning roll shafts (36) and (36) are fixed. Secure the cleaning metal (37), (37) to the cleaning metal (37), (3
7) is a configuration including a scraper and a brush, and is configured to remove the water-detected crushed grains adhering to the outer peripheral surfaces of the detection rolls (34) and (34) that are rotationally driven.

The partition plate (26) below the cleaning metal (37) (37),
An inclined plate (38) connecting between the supporting metal (22) and (24) is provided between (26), and moisture is already detected by the detection rolls (34) and (34) with this inclined plate (38). The crushed grain and the grain leaked from the spiral groove (30) are received, and the slant plate (38) guides the flow down to reduce and supply the grain into the grain raising machine (16). The machine (5) is circulated at the same time as the grain being circulated and dried.

A motor (39) is provided on the support metal (25) in the upper part of the box frame (21), and a gear is fixed to the end of the shaft of the motor (39), and the gear and the transfer roll shaft (27) are fixed. The gear and the detection roll shafts (35) and (35) are configured to mesh with each other, and the motor (39) is generated by transmitting an electrical measurement signal transmitted from the operating device (10).
Is rotated, and each part of the grain moisture measuring device (3) is rotationally driven by the rotation of the motor (39).

The operating device (10) has a box shape, and a sticking work start switch (40) for performing operations such as starting and stopping the dryer (5) for each work on the surface plate of the box body, a drying work start switch. (41), discharge work start switch (42), stop switch (43), finishing target moisture setting picker (44) for setting the finishing target moisture value of the grain, hot air temperature generated from the burner (1) The hot-air temperature setting pick-up (45) and the hot-air temperature generated from the burner (1) detected by the hot-air temperature sensor (54) and the hot-air temperature generated by the hot-air temperature sensor (54) are alternately detected. A display device (4) for displaying on the display is provided, and a control device (46) and a calculation control device (4) are provided inside.
7) is provided.

The calculation control device (47) has an input circuit (48) to which the operation of the start switch (41) and the setting knob (44) is input, and an input circuit to which the detection of the swelling amount sensor (58) is input. (Five
9), the detection value detected by the grain moisture measuring device (3) is A
A-D converter (49) for -D conversion, and an input circuit (5 for inputting the conversion value converted by the A-D converter (49)
0), a CPU (51) that performs arithmetic logic operation, comparison operation, etc. on various input values input from these input circuits (48), (50), (59), and various commands from this CPU (51). The configuration is such that an output circuit (52) that receives and outputs a command is provided.

The control device (46) controls the start switches (40), (4).
2), a stop switch (43), an input circuit (53) to which the operation of the setting knob (45) is input, and a hot air temperature sensor (54) that detects the hot air temperature generated from the burner (1). An AD converter (55) for AD converting the detected hot air temperature, an input circuit (56) to which the conversion value converted by the AD converter (55) is input, and each of these input circuits (53) ,
The CPU (51) for performing various arithmetic and logical operations and comparison operations on various input values input from (56), and an output circuit (57) for receiving and outputting various commands instructed by the CPU (51).
Is provided.

The operation of the start switch (41) and the setting knob (44) are input to the calculation control device (47), the detection of the squeeze amount sensor (58) is input, and the calculation control device (47) is sent to the control device (46). When the operation of the setting knob (45) is input, an electric measurement signal is transmitted from the operating device (10) at a predetermined time interval, and the transmission causes the motor (39) to rotate, whereby the grain moisture content is increased. The measuring device (3) is activated, the number of grains set and stored in the CPU (51), for example, the moisture value of 36 grains, is detected, and the average value of the detected moisture values of the 36 grains is calculated, When the calculated and obtained average moisture value is detected four times, the moving average value of the four times is calculated, and as the first-time display grain moisture value,
From the second time onward, four moving averages of the parallel moisture values sequentially detected are calculated, and the moving average value obtained by this calculation is used as the display grain moisture value, and this display grain moisture value is used as the display device (4 ), And the amount of kernels stored in the dryer (5) is detected by the detection of the amount sensor (8) for squeezing, and the circulation time of the stored kernels is detected by the detected amount. Is detected and the highest and lowest detection moisture values detected by the grain moisture measurement value (3) are compared within this detection time to detect the moisture unevenness value of the accommodated grain, The value set in the CPU (51) is stored, for example, 5%
If this is the case, the moving average value of the average moisture value of four times is calculated and used as the displayed grain moisture value. A moving average value of the average moisture values of 8 to 8 times is calculated, the moving average value obtained by this calculation is used as a display grain moisture value, and the displayed grain moisture value is displayed on the display device (4). Yes, these C
The numerical value set and stored in the PU (51) is a configuration in which the optimum numerical value is stored, and the same grain moisture value as the set finishing target moisture value set by operating the setting knob (44) is set to the grain. The dryer (5) is automatically stopped when it is detected by the particle water content measuring device (3). By operating the start switch (41),
The dryer (5) has a configuration in which each motor of the dryer (5), which rotates and drives a portion required for performing a drying operation, rotates.

The control device (46) controls the start switches (40), (42).
Is input, the respective motors of the dryer (5), which rotate and drive the parts required for the stake-in work and the discharge work in the dryer (5), are rotated. The detected hot air temperature detected by the hot air temperature sensor (54) for detecting the hot air temperature generated from the burner (1) and the set hot air temperature set by operating the hot air temperature setting scoop (45) are compared and different. The fuel pump (60) that supplies fuel to the burner (1) is controlled,
This is a configuration in which the amount of fuel drawn in is changed in 0).

When performing the drying operation of the grain, by operating the setting scoops (44) and (45) of the operation device (10) to predetermined positions and operating the drying operation start switch (41), the dryer ( At the same time when 5) is started, hot air is generated from the burner (1) and this hot air is passed through the drying chamber (2) and sucked and exhausted by the air blower (12) to be stored in the storage chamber (7). The dried grains are exposed to the hot air while they are flowing down from the storage chamber (7) in the drying chamber (2) to be dried, and are fed out to the lower portion by the feeding valve (8) to collect gutters (9). It is supplied to the inside of the grain collecting gutter (9) and is discharged to the inside of the supply gutter (19) by a transfer spiral in the grain collecting gutter (9). 14) is supplied to the inside of the transfer gutter (14), and is transferred and supplied to the diffusion plate (15) by the transfer spiral in the transfer gutter (14).
The diffusion plate (15) is repeatedly dried by being uniformly diffused and reduced into the storage chamber (7) to be dried. During the drying operation, the bucket conveyer (17) conveys the bucket to the upper portion. Grains falling from the conveyor (17) are received by the grain shed (20) and supplied from the grain shed (20) onto the transfer roll (28) of the grain moisture measuring device (3).

The motor (39) of the grain water content measuring device (3) is rotated by the transmission of an electric measurement signal transmitted from the operating device (10) at a predetermined time interval, and this motor (39 )
Each part of the grain moisture measuring device (3) is rotationally driven by the rotation of the feeding roll (28) and the guide plate (32), and this feeding into the spiral groove (29) of the feeding roll (28). Grains are taken in one by one, transferred along the spiral groove (29) and supplied from the end onto the downflow guide plate (33), and are guided down by the downflow guide plate (33) to detect the detection roll ( 34), (34), and the detection rolls (34), (34) are fed on the outer peripheral surface of the grain and crushed under pressure, and at the same time, the moisture value of the crushed grain is detected. When the grain moisture measuring device (3) detects a grain moisture value which is the same as the set finishing target moisture value set by operating the setting scoop (44) by repeating the process, the operation device (10) The dryer (5) is automatically stopped by automatically controlling it by the calculation control device (47).

After the drying work is started and the grains contained in the storage chamber (7) circulate once, the moisture content of the contained grains is determined by the detected moisture value detected by the grain moisture setting device (3). When the mottle value is detected and the detected water mottle value is large, the moving average value is increased by increasing the predetermined number of the predetermined average water values used in the calculation of the moving average value. Is calculated, and the moving average value obtained by this calculation is displayed on the display device (4) as the display grain moisture value. Conversely, when the detected moisture spot value is small, the predetermined number of average moisture values are reduced. Then, the moving average value is calculated from the reduced average water content value, and the moving average value obtained by this calculation is displayed on the display device (4) as the display grain water content value.

The moving average value is calculated by increasing or decreasing the number of average moisture values to calculate the moving average value depending on the size of the moisture unevenness value of the grain during drying, and the moving average value obtained by this calculation. Is displayed on the display device (4), the displayed numerical value does not fluctuate significantly even when the dried grain has a large moisture spot value.

[Brief description of drawings]

1 is a block diagram, FIG. 2 is a flow chart, 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 part of the dryer, which shows the entire dryer. In the figure, reference numeral (1) indicates a burner, (2) indicates a drying chamber, (3) indicates a grain moisture measuring instrument, and (4) indicates a display device.

Claims (1)

[Claims] 1. A drying chamber (2) for drying the grains by hot air from a burner (1) while flowing the grains down, and the grains circulated and transferred to the drying chamber (2) are operated at predetermined time intervals to give predetermined grains. Number of moisture values is detected, the average value of the detected moisture values detected by this predetermined number of particles is calculated, a predetermined number of moving average values of the average moisture values obtained by this calculation are calculated, and the moving average value obtained by this calculation is displayed. Grain moisture measuring device (3)
In the dryer provided with the display device (4) for displaying the displayed grain moisture value obtained by this calculation, the grain moisture measuring device ( 3) The moisture spot value of the contained grain is detected by the detected moisture value detected by 3), and when the moisture spot value obtained by this detection is more than a predetermined value, the predetermined number of average water values for calculating the moving average value is controlled to be large. A grain water content calculation method comprising a calculation control device for calculating a moving average value.