JP3048006B2 - Grain resistance moisture meter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grain moisture measuring device.

[0002]

2. Description of the Related Art In the prior art, a grain feeding device is provided above a pair of electrode rolls to flow down a sample grain, and between the pair of electrode rolls, the grain is measured while measuring the water content of the grain. Things. This grain feeding device for moisture measurement has a concave portion provided on the circumference of a disk, a conveyor belt or a cylinder, and rotates these in the sample grain or supplies the sample grain to these. Is agitated so that each grain is caught in a concave portion on the surface. The cereal caught in the concave portion is conveyed by the rotational movement of the disk or the like and flows down between the electrode rolls.

[0003]

[0004]

As shown in the above-mentioned prior art, the grain feeding device is structured to catch grains in a concave portion. One or more grains may be trapped in the concave portion. This is the size of the grain, e.g. length, width,
This is because the concave portion is formed in a shape having a margin because the thickness cannot be specified, which is against the improvement of the accuracy of the moisture meter. That is, in general, it is desirable to supply grains one by one between a pair of electrode rolls in order to improve the accuracy of the moisture meter, but the prior art lacked certainty in this respect.

[0005]

In view of the above, it is an object of the present invention to provide a cereal resistance moisture meter equipped with a grain feeding device that reliably supplies sample grains one by one between electrode rolls.

[0007]

According to the present invention, each other
A grain-feeding device is provided above a pair of electrode rolls rotating in opposite directions, a sample grain flows down between the electrode rolls , and a cereal resistance moisture meter for measuring the moisture of the sample grain while crushing between the electrode rolls. In the above-mentioned grain feeding device, the cylinder is rotatably
The laterally set, the central axis parallel to the longitudinal outer peripheral surface of the cylinder,
Projects outward from the outer peripheral surface and is rotated by the rotation of the central shaft.
At the same time, use a
Arrange multiple items so that only one exists on each straight line in the hand direction
Comprising a the scooping roller, the plurality of scraping up claws in the longitudinal direction of and the cylinder at equal intervals in the rotational direction of the outer peripheral surface of the cylindrical
By arranging them at equal intervals, the above-mentioned problem is solved. In addition, they are tilted toward the rotation direction of the
Beveled or the width of the nail in the longitudinal direction
Is Ru can hold onto the nail scraped the center of gravity of the sample grain
It works effectively with the minimum width.

[0008]

[0009]

[Action] The KyuKoku device grain resistance type moisture meter, pivotally
A cylinder is provided laterally, and protrudes outward from the outer peripheral surface on the outer peripheral surface in the longitudinal direction parallel to the central axis of the cylinder.
A scraping claw that scrapes up the sample grain on the peripheral surface
Are arranged so that only one exists on each straight line in the longitudinal direction.
Since the scooping roller is provided , the grain can be supplied one by one with certainty, unlike the prior art in which the grain is caught in the recess. For example, the scraping claw may be formed to be smaller than the length or width (thickness) of the sample grain so that the center of gravity of the grain is on the scraping nail . First, this point is different from the prior art in which the concave portion is formed in a marginal shape. That is, one or more grains cannot be scraped on the scraping nail .
Conversely, if the grain is larger than the grain, the center of gravity will be lifted.
Since it is separated from the nail, it cannot be lifted up, and is not supplied to the pair of electrode rolls.

By the way, provided the piling nail when the scraping up roller is provided on the outer peripheral surface of the cylinder, at regular intervals the pawl scooping equidistantly around the circumference of the circumferential direction and the longitudinal direction of the cylinder
Therefore , the grains can be scraped up at regular intervals in the circumferential direction of the cylinder, and the grains can be supplied to the pair of electrode rollers one by one at regular intervals. Therefore, the electrode rollers can measure the moisture of the grains one by one. In addition, since the scraping claws are provided at equal intervals in the longitudinal direction, the grains can be scraped up evenly in the longitudinal direction, and the sample grains can be averagely collected in the longitudinal direction of the cylinder. In addition, since the scraping claws are protruding from the outer periphery of the cylinder, the rotation of the cylinder and the stirring of the sample grains at the same time make it possible to collect better sample grains at the same time.

[0011]

[0012]

[0013]

1 to 6 show an embodiment according to the present invention. First, referring to FIG. 1 and FIG. 2, a cereal resistance moisture meter device 1 (hereinafter referred to as “moisture meter 1”) according to the present invention will be schematically described. Electrode rolls 5 and 6 which are respectively mounted on a main shaft 3 and a sub shaft 4 which are rotatably supported in a machine frame 2 are rotatably arranged at arbitrary intervals. A scraping roller 7, which will be described in detail later, is provided substantially above the electrode rolls 5, 6, and is rotatably mounted on a shaft 8 which is supported in parallel with the electrode rolls.
A receiving plate 9 is provided, one of which faces between the electrode rolls 5 and 6 along the circumferential direction below the scraping roller 7, and the other is fixed to the machine frame, and the sample grains are stored on the receiving plate 9. Then, the particles are smoothly scraped up by the scraping roller 7 one by one. The scraping roller 7 and the receiving plate 9 constitute a grain feeding device 25. Further, an input port 10 for inputting the sample grain is provided above the scraping roller 7, and the connection may be made such that the sample grain is directly input or the sample flows from another device.

On the other hand, below each of the electrode rolls 5 and 6, after crushing the sample grain with the electrode rolls 5 and 6,
Brushes 11 and 12 for wiping off and cleaning grains attached to the electrode rolls 5 and 6 are fixed to the machine frame 2.

The above-mentioned electrode rolls 5 and 6 and the scraping roller 7 are driven by an electric motor 13. This drive mechanism is shown in FIG. A gear 15 axially mounted on a drive shaft 14 of the electric motor 13 is engaged with a gear 16 axially mounted on the main shaft 3, and a gear 16 is engaged with a gear 17 axially mounted on the auxiliary shaft 4.
Therefore, when the drive shaft 14 rotates, the electrode rolls 5 that are supported by the main shaft 3 and the sub shaft 4 by the engagement of the gears 15, 16, and 17.
6 rotate in opposite directions. Further, a pulley 18 attached to the main shaft 3 and a pulley 19 attached to the shaft 8 are connected to a belt 20.
To rotate interlockingly. Therefore, the rotation of the drive shaft 14 also rotates the scraping roller 7.

The operation of the moisture meter 1 will now be described with reference to FIG. When the drive shaft 14 rotates clockwise (forward rotation) by the electric motor 13, the electrode rolls 5 and 6 move in opposite directions, respectively.
Rotation to be crushed sample grain. Further, the scraping roller 7 is rotated leftward by the belt 20. Here, when a sample grain is thrown in from the input port 10, the sample grain is introduced between the scraping roller 7 and the receiving plate 9,
While stirring, electrode rolls 5 and 6 one by one
It is put in between. The sample grains charged between the electrode rolls 5 and 6 are crushed and then discharged to the discharge box 21 from between the rolls 5 and 6. While the sample grain is crushed between the electrode rolls, the electric resistance value is measured and the moisture value of one grain is measured. The electrode portions of the electrode rolls 5 and 6 are constantly cleaned by brushes 11 and 12 provided respectively. When the motor 13 is rotated counterclockwise (reverse rotation), the sample between the electrode rolls 5 and 6 is conveyed to the outside of the electrode roll 5 on the main shaft 3 side by the reverse rotation of the electrode rolls 5 and 6, and the receiving box 22 Is discharged to The operation of the reverse rotation of the electric motor 13 will be described in detail in the description of the control described later.

[0017] Incidentally, as shown in FIG. 1, the positional relationship between the electrode roll 5 and the electrode roll 6 which is inclined, the motor 1
When the sample roll 3 is rotated in the reverse direction, the sample immediately before the crushing put between the electrode rolls is conveyed in the opposite direction by the electrode roll 5, and this is because the electrode roll 5 and the electrode roll 6 are close to each other. the point a there, the samples but the transport along the circumference of the electrode roll 5 in the opposite direction by moving upwards is facilitated, is introduced from the scooping roller 7 and setting the electrode roll 6 too upward Since it is no longer introduced between the electrode rolls 5 and 6, the electrode roll 5 and the
The inclination with the pole roll 6 is arbitrarily determined. As another method, when the electrode rolls 5, 6 are provided at the same height, the electrode rolls 5, 6 are slightly inclined in the longitudinal direction of the electrode rolls. The sample is then discharged.

Next, the scraping roller 7 according to one embodiment of the present invention
3 will be described with reference to FIGS. FIG. 3 is an enlarged view showing only the scraping roller 7 shown in FIG. A plurality of scraping claws 24 are provided at regular intervals in the circumferential direction on the circumference in the longitudinal direction parallel to the shaft 8 of the roller 23 mounted on the shaft 8 . As is clear from FIG. 5, the rollers 23 are also provided at equal intervals in the longitudinal direction, and only one scraping claw 24 is provided on a straight line in the longitudinal direction. In addition, an inclination 26 may be provided on the rotation direction side of the scraping claw 24 in order to facilitate scraping of the sample grain. Further, a scraping claw 24 that contacts the longitudinal direction of the roller 23
Is determined as small as possible so that only one grain is scraped up according to the length shape of the sample grain. That is the take
The width of the inclined and the roller 23 in the rotational direction of the raised pawls 24 come is not limited by this embodiment in what is arbitrarily changed by the size and shape of the sample grain, claw 2 splashed is the center of gravity of the grain
The shape may be such that it can be held on top of the fourth.

Since the scraping claws 24 are provided as described above, it is possible to supply the sample one by one more reliably than the conventional one having the concave portion. In other words, the structure for catching the sample by the concave portion as seen in the prior art forms the concave portion in a shape that has a margin because the length, width and thickness of the sample grain cannot be specified, but in the present invention, the center of gravity of the grain is Since it is formed as small as possible so that the position can be held on the scraping nail 24, not only the two grains are not scraped, but also impurities larger than the grain are scraped.
Possibility scooped up to 4 becomes very small. Furthermore, only one scraping claw 2 is provided on each straight line in the longitudinal direction of the roller 23.
4 so that grains can be scraped up at equal intervals in the circumferential direction of the roller 23 and supplied one by one to the electrode rollers 5 and 6 at equal intervals. Another effect is that the grains are scraped up evenly in the longitudinal direction because the scraping claws are provided at equal intervals in the longitudinal direction of the roller 23, so that the sample grains can be evenly collected in the longitudinal direction of the roller 23. In addition, since the claw projecting from the outer periphery of the roller 23 as the scraping claw 24, the roller 23 rotates and the sample grain is stirred at the same time, so that a better sample grain can be collected at the same time.

Next, control of the moisture meter 1 will be described. First, a circuit diagram in which the electric motor 13 is connected to the AC power supply 31 via the forward / reverse rotation relay 30 is shown in FIG. The electric motor 13 is connected to a power supply 31 via an open / close switch 32, a forward rotation relay 33 and a reverse rotation relay 34 of the electric motor 13. The capacitor 35 in the circuit is used for starting and a description thereof will be omitted according to a known conventional technique. A line between the open / close switch 32 and the forward / reverse relay 30 has a CT 36 for detecting a change in the load current of the electric motor 13.
Is provided. In the present invention, the following circuit is provided based on the load current detected from the CT. That is, it is shown in FIG. An output signal of a current detector 38 composed of a CT 36 and an amplifier 37 for amplifying the signal of the CT 36 is converted into a reference signal setter 40 composed of a variable resistor, a signal of the reference signal setter 40, The signal is input to a comparison unit 42 including a comparator 41 for comparing the output signal.
Further, the output signal of the comparing section 42 is input to a control device 43 for controlling the forward / reverse rotation of the electric motor. The control device 43 includes a coil 4 for operating the forward rotation relay 33 and the reverse rotation relay 34.
4 and 45 are connected to a DC power supply 46.

The control by the above configuration will be described. The electric motor 13 of the moisture analyzer 1 connected to the AC power supply 31 is connected to the relay 33 by energizing the relay coil 44 which is initially set by the control device.
And the opening / closing switch 32 closes to start normal rotation. When the normal rotation is started, the electrode rolls 5 and 6 start rotating in the direction of crushing the sample grains as described above, and the sample grains are supplied from the scraping roller 7 to between the electrode rolls, and the grains are fed one by one. Will be measured.

[0022] Now, this time piling Russia - the case that contained contaminants among those that have been supplied from the La 7, particularly in the case was a hard crushed difficult contaminants than grain, following in the present invention Act on. The reference signal setting unit 40 includes an electric motor 1 when the sample grain is crushed between the electrode rolls 5 and 6.
A reference value (threshold value) for comparing the load current value flowing through the circuit No. 3 is set. This value is based on the output signal of the current detection unit 38 obtained from the load current obtained when the normal sample grain is crushed. For example, the reference signal setting unit 40 controls the load current when the crushed sample grain does not exceed this reference value. It has been set in. In this setting, when a harder and less crushable contaminant than the sample grain is supplied between the electrode rolls 5 and 6,
The load current inevitably increases, and the output signal of the current detection unit 38 also changes due to the increase. The changed output signal is compared with the reference value of the reference signal setting unit 40 by the comparison unit 41,
The comparing section 41 outputs to the control section 43 that the reference value (threshold value) has been exceeded. The control device 43 switches from the forward relay coil 44 to the reverse relay coil 45 according to the output signal from the comparing section 41. By switching the relay coil, the relay 33 is opened, the relay 34 is closed, and the electric motor 13 rotates reversely. When the electric motor 13 rotates in the reverse direction, the hard and hard-to-crush impurities are conveyed along the circumference of the electrode roll 5 by the reversal of the electrode rolls 5 and 6, and discharged into the receiving box 22.

[0023]

[0024]

According to the present invention, the electrode b - a feeding grain apparatus for supplying a sample grain to between Le raise reliably scrape one grain take-
Since it is a scraping roller with a lifting claw , it is possible to supply grains one by one between a pair of electrode rolls, further improving the measurement accuracy of the resistance type moisture meter It became.

[0025]

From the above, it has become possible to provide a resistance moisture meter for cereals provided with a grain feeding device for reliably supplying sample grains one by one between the electrode rolls.

[Brief description of the drawings]

FIG. 1 is a sectional view showing the inside of a cereal resistance moisture meter according to the present invention.

FIG. 2 is a diagram showing a driving device of the cereal resistance moisture meter of FIG. 1;

FIG. 3 is a side view of a scraping roller of the grain feeding device.

FIG. 4 is a control circuit diagram for controlling a motor for driving a grain resistance moisture meter.

FIG. 5 is a front sectional view of a scraping roller of the grain feeding device.

FIG. 6 is a power supply circuit diagram of an electric motor that drives a grain resistance moisture meter.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Grain resistance moisture meter 2 Machine frame 3 Main shaft 4 Grain resistance moisture meter 5 Machine frame 6 Main shaft 7 Scraping roller 8 Axis 9 Receiving plate 10 Input port 11 Brush 12 Brush 13 Electric motor 14 Drive shaft 15 Gear 16 Gear 17 Gear 18 Pulley 19 Pulley 20 Belt 21 Discharge box 22 Receiving box 23 Roller 24 Scrape claw 25 Feeder 26 Incline 30 Forward / reverse relay 31 AC power supply 32 Open / close switch 33 Forward relay 34 Reverse relay 35 Capacitor 36 CT 37 Amplifier 38 Current detection unit 40 Reference signal setting unit 41 Comparator 42 Comparison unit 43 Controller 44 Forward relay relay coil 45 Reverse relay coil 46 DC power supply

Claims (4)

(57) [Claims] 1. A grain feeding device is provided on an upper portion between a pair of electrode rolls rotating in opposite directions to each other to transfer a sample grain between the electrode rolls.
Flows down in parallel, the resistance type moisture meter grain for measuring the moisture of the sample grains with crushed between the electrode rolls, the paper grain apparatus, a rotatable cylindrical laterally set, the central axis of the cylinder
The center axis that protrudes outward from the outer peripheral surface
The sample grain on the outer surface by rotating
Only one lifting claw exists on each straight line in the longitudinal direction of the cylinder.
Resistance type moisture meter grain characterized in that it comprises a a plurality placed the scraping up roller to standing. 2. The cereal grain according to claim 1, wherein the plurality of scraping claws are arranged at regular intervals in the rotation direction of the outer peripheral surface of the cylinder and at regular intervals in the longitudinal direction of the cylinder. Resistance moisture meter. 3. An inclined surface is provided on the rotation direction side of the scraping claw.
3. The grain resistance according to claim 1, wherein
Type moisture meter. 4. The longitudinal width of the scraping claw is determined by the size of the sample grain.
Raise the center of gravity to the minimum width that can be lifted and held on the nail.
The resistive moisture according to claim 1 or 2,
Total.