JP2608143B2 - Grain moisture content measuring device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a grain moisture content measuring device for measuring the moisture content of a grain.

[Prior Art] Conventionally, a moisture content measuring device for measuring the moisture content of grains (eg, paddy, brown rice, white rice, wheat, barley, etc.) is known.

This moisture content measurement device includes a pair of electrode rolls (measurement units) that are arranged to face each other and rotate in opposite directions. When grains are supplied between the electrode rolls and the electrode rolls are rotated, the grains are crushed with the rotation. When measuring the water content, a grain is supplied between the electrode rolls to crush the grain and a current is applied between the two electrode rolls, and the electric resistance value of the current flowing between the electrode rolls through the grain is measured. By doing so, the moisture content of the grain is detected.

[Problems to be Solved by the Invention] By the way, in the case of grains having a low water content as a whole and relatively little variation among individual grains (for example, grains after being dried by a dryer or the like), water content is low. In order to increase the efficiency of the rate measurement operation, it is preferable that the moisture content of many grains can be measured at once. On the other hand, for grains having a high water content as a whole and relatively large variations among individual grains (eg, grains immediately after threshing), the mowing time is determined by comparing the moisture content of the individual grains. In addition, it is preferable that the moisture content of a grain can be measured one by one in order to analyze the obtained data after the measurement and use the data to consider the variation in the moisture content.

In this case, if a measuring device capable of measuring the moisture content of many grains at once and a measuring device capable of measuring the moisture content of grains one by one were separately provided, the cost would be high, and the measurement would be required each time. Since the device needs to be replaced, measurement workability is also deteriorated.

In consideration of the above facts, the present invention can selectively use a measurement state in which the moisture content of a large number of grains can be measured at a time and a measurement state in which the moisture content of the grains can be measured one by one as desired. Accordingly, it is an object of the present invention to obtain a grain moisture content measuring device capable of improving measurement workability.

[Means for Solving the Problems] A grain moisture content measuring apparatus according to the present invention is configured to rotate and crush a grain supplied to an opposed gap and to supply a current flowing through the grain. A pair of electrode rolls for measuring the electric resistance value, and are arranged in the vicinity of the pair of electrode rolls so as to be inclined more than the critical slip angle of the kernel, and each kernel corresponds to the grain shape of the kernel. A belt conveyor having a belt having a transport hole formed therein, the belt conveyor for holding and transporting only the grains that have entered the transport hole by moving the belt, and supplying the grain to the opposed gap between the pair of electrode rolls; The portion is opened and the kernel for measurement is input, and the input kernel is in one of a state in which the input kernel is directly supplied to the opposed gap between the pair of electrode rolls and a state in which the input kernel is supplied to the belt conveyor. Selective for lower opening And a possible hopper.

[Operation] In the grain moisture content measuring device having the above-described configuration, when the grain for measurement is put into the hopper, the grain is moved toward the opposing gap of the electrode roll and the belt conveyor in a direction corresponding to the lower end opening of the hopper. Is supplied.

Here, in a state in which the lower end opening of the hopper corresponds to the opposing gap of the electrode roll, the measurement kernel put into the hopper is directly supplied to the opposing gap of the electrode roll. Therefore, the moisture content can be measured by supplying a large number of grains at once.

On the other hand, in a state where the lower end opening of the hopper corresponds to the belt conveyor, the measurement grains introduced into the hopper are supplied onto the belt and enter the conveyor holes of the belt one by one. Here, when the belt conveyor is driven, since the belt is arranged at an angle greater than the critical slip angle, only the grains that have entered the transport holes among the grains in the hopper are held upward by the movement of the belt and transported. Then, the grains are supplied to the opposed gaps of the electrode rolls one by one as grains for measurement. Therefore, the moisture content of the grains can be measured one by one. As described above, the lower end opening of the hopper is selectively made to correspond to one of the opposed gap between the pair of electrode rolls and one of the belt conveyors, so that a large number of grains can be measured at once. A measurement state in which the moisture content of the grain can be measured and a measurement state in which the moisture content of the grain can be measured one by one can be selectively used. Therefore, there is no need to change the measuring device each time according to the number of grains to be measured as in the related art, and different measuring modes can be performed by one measuring device, and the measurement workability is improved.

Embodiment FIG. 1 shows a grain moisture content measuring apparatus according to an embodiment of the present invention.
10 is a perspective view of the entire appearance. FIG. 2 is a perspective view of a main part of the grain moisture content measuring device 10, and FIG. 3 is a schematic sectional view of the main part.

A measuring unit 14 is provided in the body 12 of the moisture content measuring device 10. Inside the measuring unit 14, a pair of electrode rolls 16 rotating in opposite directions are arranged to face each other.
By rotating, the grains can be crushed with the rotation. Also,
Each of the electrode rolls 16 is connected to a measurement control circuit (not shown), and a current is applied between the two electrode rolls 16 to measure the electric resistance value of the current flowing between the electrode rolls 16 via the grain, thereby making the grain wet. The rate can be detected.

An endless annular belt 18 is arranged on the side of the measuring unit 14. The belt 18 is wound around a pair of rollers 20 and 22. Further, the belt 18 (a pair of rollers 20 and 22)
Are arranged at an inclination angle equal to or greater than the critical slip angle of the grain. In the present embodiment, the arrangement positions of the rollers 20, 22 are set such that the inclination angle is 45 degrees.

A motor 26 is connected via a chain 24 to the roller 20 located on the lower side, and the belt 18 can be rotationally moved by driving the motor 26.
The motors 20 and 22 and the motor 26 constitute a so-called belt conveyor that conveys the conveyed object upward (from the roller 20 to the roller 22).

As shown in detail in FIG. 4, the belt 18 has a plurality of through holes 28, 30, and 32 formed in three rows in the width direction of the belt 18, respectively. The through holes 28, 30, and 32 are formed at regular intervals along the longitudinal direction (rotational movement direction) of the belt 18 and over the entire circumference of the belt 18. Also, each through hole
Each of 28, 30, and 32 is formed in an elliptical shape whose major axis is along the longitudinal direction of the belt 18. Furthermore, each through hole 28, 3
0 and 32 are formed in different sizes from each other, and the through holes 2
8 corresponds to a large-diameter large grain (for example, barley), the through-hole 30 corresponds to a medium-diameter and medium-sized grain (for example, paddy or wheat), and the through-hole 32 has a small-diameter and small-size. (For example, brown rice or white rice).

Immediately above the belt 18, a single grain hopper 36 is supported by a support plate 34.
Is supported. The single-grain hopper 36 has a substantially cylindrical shape whose upper end and lower end are both opened, and grains such as paddy, brown rice, white rice, wheat, and barley can be put into the interior from the upper end opening. This single-grain hopper 36 has a belt opening at the lower end.
The grains placed in the single grain hopper 36 are prevented from falling from the lower end opening by the belt 18 and are held in the single grain hopper 36. ing.

The single-grain hopper 36 is slidable along the support plate 34 in the width direction of the belt 18 (the direction of the arrow A in FIG. 2). Therefore, the lower end opening of the single-grain hopper 36 is formed in the belt 18. One of the through holes 28, 30, 32 can be selectively made to correspond. In the vicinity of the lower end opening of the single grain hopper 36,
An opening / closing door 40 is attached by a hinge 38, and the grains put in the single grain hopper 36 are moved downward (that is, the belt
18) can be released. Return spring on hinge 38
42 is attached, and always biases the door 40 toward the closed position.

On the inner side of the endless annular side of the belt 18 opposite to the single grain hopper 36, a sorting plate 44 is disposed in a state of being substantially in contact with the belt 18. As shown in detail in FIG. 5, through holes 46,
48 and 50 are drilled. Each through hole 46, 48, 50 is a belt
The through holes 28, 30, 32 formed in the through hole 18 are formed and located on the movement trajectories of the through holes 28, 30, 32. In addition, each through-hole 46, 48, 50 has a predetermined size smaller than each through-hole 28, 30, 32 (for example, a size corresponding to immature grains or broken grains), for this reason , Each through hole
Grains smaller than the through-holes 46, 48, 50 among the grains that have entered the insides 28, 30, 32 fall through the through-holes 46, 48, 50.

A saucer 52 is disposed immediately below the through holes 46, 48, and 50.
One end of a pipe 54 is connected to the tray 52, and the other end of the pipe 54 is connected to a cake receiving box 56.

A guide plate 58 is arranged below the roller 20 located on the lower side. The guide plate 58 has an upper end corresponding to the belt 18 wound around the roll 20, and a lower end connected to the cake receiving box 56. Therefore, the grains falling from the belt 18 can be guided to the cake receiving box 56.

On the other hand, immediately above the electrode roll 16 of the measuring section 14, a multi-grain hopper
60 are located. Like the single-grain hopper 36, the multi-grain hopper 36 has a substantially cylindrical shape with both upper end and lower end opened. it can. This multi-drop hopper 60
The lower end opening is located just above the gap between the two electrode rolls 16.
A large number of grains put into the inside can be supplied directly to the gap between the two electrode rolls 16 from the lower end opening.

A display unit 62 is provided on the front surface of the body 12 of the moisture content measuring device 10, and can display the moisture content detected by the measuring unit 14. Further, a printer 64 is provided in the body 12 on the side of the measuring unit 14.
(Detailed structure is not shown), and the measured moisture content can be printed as desired.

 Next, the operation of the present embodiment will be described.

In the grain moisture content measuring device 10 having the above configuration, when measuring the moisture content, a measurement state in which the moisture content of a large number of grains can be measured at once, and a measurement state in which the moisture content of the grains can be measured one by one. Can be used properly.

In other words, when measuring the moisture content of many grains at once, the measurement grains placed in the multiple hopper 60 are directly charged with the measurement grains placed in the multiple hopper 60. roll
It is supplied to 16 opposed gaps. The grains supplied between the electrode rolls 16 are crushed with the rotation of the electrode rolls 16, and furthermore, electricity is supplied between the two electrode rolls 16, and the electric resistance value of the current flowing between the electrode rolls 16 via the grains. Is measured, the moisture content of the grain is detected. After the detection, the moisture content measured by the measuring unit 14 is displayed on the display unit 62. in this way,
By feeding a desired number of grains into the multi-hopper 60, a large number of grains can be supplied at once and the water content can be measured. Therefore, the method is suitable for measuring a grain having a low water content as a whole and having relatively little variation among individual grains (for example, a grain after being dried by a dryer or the like). The efficiency of the measurement operation can be increased.

On the other hand, when measuring the water content of the kernels one by one, the kernels for measurement are put into the single kernel hopper 36 and the motor 26 is driven.

When the grains are put into the single hopper 36, the single hopper 36
The grains are held in a single-grain hopper 36 by a belt 18 disposed immediately below the lower end opening of the
Grains enter each of the 18 through holes 28 (30, 32).
Further, the grain that has entered the through hole 28 is held in the through hole 28 by the sorting plate 44.

Next, when the belt 18 is rotationally moved by the drive of the motor 26, the belt 18 is arranged to be inclined at the critical slip angle or more, so that only the grains that have entered the through holes 28 in the single grain hopper 36 are Is moved upward by the movement of the roller 22 and moves toward the roller 22.

Here, since the through-holes 46 (48, 50) of a predetermined size smaller than the through-hole 28 are formed in the sorting plate 44 on the movement trajectory of the through-hole 28, the sorting plate 44 enters the through-hole 28. Of the grains, grains smaller than the through-hole 46 fall through the through-hole 46, and
It is accumulated in the cake receiving box 56 via the pipe 52 and the pipe 54. That is, grains (immature grains and the like) smaller than the through holes 46 are removed. On the other hand, the grain larger than the through-hole 46 is held in the through-hole 28 without being dropped and held and conveyed by the belt 18, and only this grain is used for measurement between the electrode rolls 16 of the measuring unit 14. The grains are supplied one by one.

The grains supplied between the electrode rolls 16 are crushed and energized as described above, and the moisture content is detected. After the detection, the moisture content measured by the measuring unit 14 is displayed on the display unit 62, and the moisture content is printed on the printer 64 as desired.

As described above, in the measurement state in which the measurement kernel is put into the single-grain hopper 36 and the measurement is performed, the measurement kernel can be supplied one by one, so that the number of the measurement kernel can be counted. At the same time, a single grain hopper 36
Can be arranged. Further, before supplying the grains to the measuring unit 14, immature grains are removed, and grains smaller than a predetermined size (immature grains, broken grains, etc.) are removed and only regular-sized grains are removed. Since it can be supplied as grains for measurement, measurement accuracy is also improved.

Further, in this case, the single-grain hopper 36 is slid along the support plate 34 so that the lower end opening is formed in each of the through holes 28, 3 of the belt 18.
Since it is possible to selectively correspond to one of 0 and 32, it is possible to select a through-hole having a size suitable for the type of grain to be measured, to enter the through-hole, and to convey it. Therefore,
Even when measuring grains of different sizes, there is no need to change the belt 18 each time according to the grains to be measured, and workability is improved.

After the measurement of the water content, the opening / closing door 40 of the single-grain hopper 36 is opened against the urging force of the return spring 42 to release the grains in the single-grain hopper 36. The released grains fall onto the guide plate 58 via the belt 18, are further guided by the guide plate 58, and are discharged to the cake receiving box 56. in this way,
The grains in the single grain hopper 36 can be discharged only by opening and closing the opening / closing door 40, and the workability of discharging the grains is improved.

As described above, in the moisture content measuring device 10, by selectively using the single-grain hopper 36 and the multi-grain hopper 60, it is possible to cope with one of the gap between the electrode rolls 16 and the belt 18 (belt conveyor). Thus, a measurement state in which the moisture content of many grains can be measured at once and a measurement state in which the moisture content of the grains can be measured one by one can be achieved. Therefore, there is no need to change the measuring device each time according to the number of grains to be measured as in the related art, and different measuring modes can be performed by one measuring device, and the measurement workability is improved.

In this embodiment, the single grain hopper 36 and the multi grain hopper 60 are arranged. However, the present invention is not limited to this. A single hopper is arranged and a bellows hose or the like is provided at the lower end opening of the hopper. A discharge direction distribution member may be provided to selectively correspond to one of the facing gap between the electrode rolls 16 and the belt 18 (belt conveyor). Even in this case, a measurement state in which the moisture content of many grains can be measured at a time and a measurement state in which the moisture content of the grains can be measured one by one can be achieved.

Further, in the present embodiment, the belt 18 has a configuration in which the oval through holes 28, 30, and 32 (large, medium, and small) are formed in three rows in the width direction of the belt 18, but the invention is not limited thereto. It may be configured to be formed in one row or four or more rows, or may be formed in another shape corresponding to the shape and size of the grain.

[Effects of the Invention] As described above, the grain moisture content measuring device according to the present invention has a measurement state in which the moisture content of many grains can be measured at a time and a measurement state in which the moisture content of the grains can be measured one by one. Can be selectively used as desired, which has the effect of improving measurement workability.

[Brief description of the drawings]

FIG. 1 is a perspective view of the entire appearance of a grain moisture content measuring device according to an embodiment of the present invention, FIG. 2 is a perspective view of a main part of the grain moisture content measuring device, and FIG. FIG. 4 is a plan view of a belt, and FIG. 5 is a sectional view of a belt and a sorting plate. 10 ... grain moisture content measuring device, 16 ... electrode roll, 18 ... belt, 28, 30, 32 ... through hole, 36 ... single grain hopper, 60 ... multi grain hopper.

Claims (1)

(57) [Claims] A pair of electrode rolls for rotating and crushing the grains supplied to the opposed gap and measuring an electric resistance value of a current flowing through the grains; A belt in which a conveying hole is formed in the vicinity of the electrode roll and inclined above the critical slip angle of the grain, and a conveying hole is formed corresponding to the grain shape of the grain and into which the grain enters each grain. A belt conveyor that holds and transports only the grains that have entered the holes by moving the belt, and supplies the grains to the opposing gap between the pair of electrode rolls. A hopper capable of selectively responding to the lower end opening in one of a state in which the supplied grains are directly supplied to the opposed gap between the pair of electrode rolls and a state in which the supplied grains are supplied to the belt conveyor. Grain moisture content measuring device.