JPS61258156A - Water measuring system for grain - Google Patents

Abstract

PURPOSE:To obtain an exact grain water value even in case of grains in which many unripe grains are mixed by receiving the supply of the grain at a prescribed time interval, inserting and pressing, and crushing this supplied grain by the prescribed number of times by a detecting roll, also detecting its water, and calculating the average value of a water value being within a prescribed range. CONSTITUTION:The supply of a gain is received by a feeding roll 13 at the prescribed time interval, and a pair of detecting rolls 1 inserts and presses, and crushes this supplied grain by a prescribed number of times, and also detects its water. When a detected grain water value detected by this detecting roll 1 is out of the range of a set grain water value, a control device executes a cut processing control and when said value is within the range of the set grain water value, said device executes a control so as to calculate the average value of the detected grain water value.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method for measuring the moisture content of grains, and can be used in grain driers, drying plants, and the like.

Conventional technology Conventionally, drying grains are fed at predetermined time intervals.
In a moisture measuring device that performs pressure crushing a predetermined number of times with a pair of detection rolls and also detects moisture, an average value is calculated from all of the detected moisture values detected a predetermined number of times, and this average value is used as the detected grain moisture value. The method was to do so.

Problems to be Solved by the Invention While the grains housed in the dryer are fed out from the drying chamber to the lower part and circulated downward, hot air generated from a burner is ventilated into the drying chamber to remove the grains flowing down in the drying chamber. While drying by exposing to this hot air, a part of the drying grains is fed and transferred a predetermined number of times by a feeding device, and is fed onto a pair of detection rolls, and the supplied grains are pinched by the detection rolls a predetermined number of times. This moisture measuring device detects the moisture content of the crushed grains at the same time as it is crushed, and calculates the average value of all the detected grain moisture values detected a predetermined number of times to determine the average value of the detected grain moisture values. If a large amount of immature grains are mixed into the grains detected by the detection roll, many of these immature grains will be detected, and since immature grains have a higher moisture content than fine grains, the average value will be higher. When the drying is completed, the fine grains may become overdried, resulting in shell side formation or crushed grains.

Means for Solving the Problems The present invention comprises a pair of detection rolls (1), (1) which receive grains at predetermined time intervals, crush the supplied grains with pressure a predetermined number of times, and detect moisture content. ) is provided, and when the detected grain moisture value detected by these detection rolls (1) and (1) is outside the range of the set grain moisture value, the cutting process is controlled and the grain moisture value is within the range of the set grain moisture value. In some cases, a control device is installed to calculate the average value of detected grain moisture values.
The system is configured to measure the moisture content of discarded grains.

Functions and Effects of the Invention For example, when a moisture measuring device is used in a dryer for drying grains, the grains housed in the dryer are circulated in the dryer while being dried by supply rolls. A part of the grains flowing down and circulating in the dryer is transferred and supplied onto the detection rolls (1), (1).
), (1), the moisture of the crushed grains is detected a predetermined number of times, and only the detected grain moisture values are within the range of the set grain moisture values. The control device calculates and controls the average value of , and the grains are dried using the calculated average value as the average value of the detected grains.

According to the present invention, the grains fed and transferred by the supply rolls are detected a predetermined number of times by the detection rolls (1), (1), and the detected grain moisture value is detected to be within the range of the set moisture value. The control device calculates and controls the average grain moisture value and uses it as the average value of the detected grains, so when detecting the moisture of grains in which many immature grains are mixed in the detected grains. Even so, when this immature grain is detected, the cutting process is controlled by the control device, and the detected value of this immature grain is not included in the calculation of the average value, so that an accurate grain moisture value can be obtained.

Embodiment In the illustrated example, a storage chamber (4) is provided in the upper part of the 11I wall (3) of the dryer (2), a drying chamber (5) is provided in the lower part, and the front wall of the model (3) is A burner (6), an operating device M (7) and a moisture measuring device (8) are installed on the plate part, and this m wall (
3) A grain raising machine (9) is provided in the # section, and a blower is provided in the rear wall plate section of the m wall (4).

The moisture measuring device (8) includes front and rear plates (1o), (10), upper and lower plates (11), (11), and left and right side plates (12),
(12) is formed into a box shape, and a part of the supply rolls (13), (13) for loading and transferring grains from this box body protrudes, and the protruding supply rolls (13) ,
(13) is installed in a state that protrudes from the front wall plate, and the box body has detection rolls (1), (1), etc. The grains are transferred to the supply roll (1
3) and (13), the detection roll (1),
(1) It has a configuration in which it is supplied upward.

Support metals (14) and (15) are provided inside the box, and supply roll shafts (work 6) and (17) are provided on the upper part of the box.
) is pivotally supported by the support metals (14) and (15), and the supply roll (13) having a helical groove formed on the outer peripheral surface is fixed to one end of the supply roll shaft (1B), and the other A gear (18) is fixed to the end of the supply roll (17).
The supply roll (13) is fixed to one end, and the gear (19) is fixed to the other end.
13) into both supply rolls (13).
, (13) are aligned with each other at the inner peripheral side contact portions, and the grains flowing down in the model (3) are transferred to this supply roll (1).
3), (13), one grain at a time is transferred to the matching spiral grooves, and the detection rolls (1), (I
).

Detection roll shafts (20), (21) are attached to the support metals (14), (15) below the supply rolls (13), (13).
), the detection roll (1) is fixed to one end of the detection roll shaft (2o), and a two-stage gear (2o) is fixed to the other end of the detection roll shaft (2o).
2), the detection roll (1) is fixed to one end of the detection roll shaft (21), and a gear (23) is fixed to the other end of the detection roll (1), ( 1) The grains supplied above are crushed under pressure by the outer peripheral surface of the detection rolls (1) and (1), the voltage value at the time of this crushing is detected, and this detected voltage value is converted into the grain moisture value. This is the configuration to be replaced.

A cleaning roll shaft (
24) is pivotally supported by the supporting metals (14) and (15), and the cleaning roll shaft (20) is supported at one end by the cleaning roll (25).
), and a gear (28) is fixed to the other end, and a brush is provided on the outer peripheral surface of this cleaning roll (25), and this brush is attached to the outer peripheral surface of the detection roller (1), (1). The detection rolls (1) are configured to make contact with each other, and are configured to remove detected crushed grains adhering to the outer circumferential surface of the detection rolls (1), (1).

(27) is a motor, this motor (27) is fixed to the support metal (15), a gear (28) is fixed to the shaft end of this motor (27), and this gear (2) and the above gear (18), (18), (23), (2B) and the two-stage gear (22) are configured to mesh with each other, and an inclined plate (28) is provided at the bottom of the cleaning roll (25), and the detection The crushed grains whose moisture has been detected by the rolls (1) and (1) are guided down by the inclined plate (28) and returned into the model (3) through the return port (30) of the front wall plate. The structure is such that the grains are recycled and returned at the same time as the drying grains.

The transmission of a measurement signal from the operating device (7) causes the motor (27) to rotate, and the gears (18), (19), (
23), (26) and the two-stage gear (22) are rotationally driven, and the supply rolls (13), (13), the detection rolls (1), (1), the cleaning roll (25), etc. are rotated. This is a driving configuration.

The operating device (7) is box-shaped and has a start switch (31), a stop switch (32), a target moisture setting hole (33), a hot air temperature setting hole (34), etc. on the surface thereof, The inside has a control device (35), and the control device t (35) is connected to each switch (31), (
32) and an input circuit (3B) into which the operations of the respective settings (33) and (34) are input; and the moisture measuring device (8).
Detection voltage value and hot air temperature detection sensor (40) detected by
An A-D converter (3
7), an input circuit (3G) into which the converted value converted by this A-D converter (37) is input, and these input circuits (3B).
), (38) performs arithmetic and logical operations and comparison operations on various input values, and this CPU (
Output circuit (3B) outputs various commands issued by
9), and this control device! (35) starts the motor (27) of the moisture measuring device (8), the various motors (41) of the dryer (2), the fuel pump (42) that supplies fuel into the burner (6), etc. , stopping, controlling, etc. These control devices (35) may be provided inside the box of the moisture measuring device (8).

The CPU (38) compares the set value set in the target moisture setting unit (33) with the detected grain moisture value detected by the moisture measurement wave H (8), and determines the grain moisture value that is the same as the set value. When the moisture measuring device (8) detects.

The dryer (2) is automatically stopped by this CPU (38), and the voltage value of the detected grains detected by the detection rolls (1), (1) of this moisture measuring device (8) and this Compare with the set voltage value stored in the CPU (38),
Detected grain voltage values that are outside the range of the set voltage values are detected by this CP.
U (311) controls the cutting process, and this CPU calculates the average value of only the detected grain voltage values that are within the range of the set voltage value.
(3B) performs calculation control to detect an average value, replaces this average value with the grain moisture value by this CPU (38), and uses this average value as the detected grain moisture value in the operation device (7). When the drying operation starts, the hot air temperature setting knob (34) is operated to set the hot air temperature.
At the same time as controlling the fuel supplied into the burner (6) by the fuel pump (42) in 8), the hot air temperature detection sensor (40) detects the hot air generated from the burner (6),
The fuel pump (42) is controlled by the CPU (38) so that the detected hot air temperature and the set hot air temperature do not differ.

By operating the operating device (7), the hot air generated from the burner (6) installed on the front wall plate is sucked and exhausted by the exhaust fan installed on the S wall plate, thereby opening the drying room (5). The grains housed in the ventilation and drying machine (2) clllM (3) are exposed to this hot air while flowing through the drying chamber (5) and are dried. The grains are returned to the storage chamber (4) and dried by repeating the circulation, but the grains flowing down the machine (3) are subjected to moisture measurement by electrical measurement signals from the operating device (7). The motor (27) of the device (8) rotates, and the gears (1st), (18), (23), (2B) and the two-stage gear (22) mesh with the gear (9B) of this motor (27). is rotationally driven, and the supply roll (13), (
13) is rotationally driven, and the grains flowing down in this model (3) are transported by this supply roll (1) inserted into this model (3).
3) A detection roll (1) that feeds grains one by one into the spiral grooves of (13) and is transported along the grooves and driven to rotate.
, (1) is fed onto this detection roll (1), (1)
The voltage value of the grains being crushed between the outer circumferential surfaces of the grains is detected, and this detected voltage value is compared with a set voltage value stored in the control device (35), and the set voltage value is determined. The detected voltage values outside the range of the set voltage value are cut, the average value of the detected voltage values within the range of the set voltage value is calculated, this average value is replaced with the detected grain moisture value, and this detection process is repeated. When the grain reaches the specified moisture content, the control device (3) of the operating device (7) is activated.
5), the dryer (2) is automatically stopped under automatic control.

The crushed grains that have been detected are discharged into the machine (3) from the reducing port (30) via the inclined plate (29), and are recycled and returned at the same time as the drying grains. The detection roll (1), (
The crushed grains adhering to the outer circumferential surface of 1) are removed and cleaned by the brush of the cleaning roll (25) that is rotationally driven.

Since the average value of only those whose detected grain moisture value is within the range of the set grain moisture value is calculated and this average value is used as the detected grain moisture value, accurate moisture values can be obtained. ,
The grains do not become over-dried, causing shell side formation, or pulverization.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a block diagram, Fig. 2 is a side sectional view, Fig. 3 is a rear view, and Fig. 4 is a partially cutaway front view of the dryer. FIG. 5 is an enlarged front view of a portion of the dryer. In the figure, code (1) indicates a detection roll.

Claims (1)

[Claims] A pair of detection rolls (1), (1) are provided, which receive grains at predetermined time intervals, crush the supplied grains under pressure a predetermined number of times, and detect moisture content.
When the detected grain moisture value detected by (1) is outside the range of the set grain moisture value, the cutting process is controlled, and when it is within the range of the set grain moisture value, the average value of the detected grain moisture values. A grain moisture measurement method that is equipped with a control device to calculate the