JP2016158601A - Rice transplanter-mounted drug sprayer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice transplanter-mounted type chemical distributor which can distribute granules of chemical granules to a paddy field uniformly by reducing a distribution difference in concentration maximally.SOLUTION: The rice transplanter-mounted type chemical distributor has a structure which flicks away chemical granules fallen on an upper face of an impeller 17 from a storage part by means of rotation of the impeller 17. The impeller 17 includes: a main disk 17a with a rotation shaft of a motor 18 as a center; plural blades 17b planted on an upper face of the main disk 17a and flicking away chemical granules fallen on an upper face of the main disk 17a from the storage part with rotation of the main disk 17a; and an annular sub disk 17c arranged above the main disk 17a with the same center as the main disk 17a and fixed to the main disk 17a.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a rice transplanter-mounted chemical spraying device that is mounted on a rice transplanter and sprays granular agricultural chemicals in parallel with the rice planting operation.

  Drugs sprayed for the purpose of weeding in paddy fields where water has been introduced after the completion of scouring were generally sprayed around several days before rice planting, but in recent years the ingredients have been improved, It is possible to spray at the same time.

  Such drugs are granular and liquid. An apparatus for spraying granular medicine is attached to a rice transplanter, and the granular medicine is intermittently flowed down from the medicine storage section, and the flowed medicine particles are rotated behind the rice transplanter by an impeller rotated by a motor. It is a mechanism to play off. Such a granular medicine spraying device is actuated while the rice transplanter performing rice planting is running to spray the medicine onto the paddy field.

JP 2006-320340 A

The impeller included in the granular medicine spraying device has a shape in which a blade portion is formed on the upper surface of a disk, rotates in one direction by rotating a motor, and passes through the pipe portion from the storage portion to the disk. The medicine particles that fall down are blown off by the blades.
By the way, since the movement of the drug particles hitting the impeller blades is naturally irregular, the angle of the particles hitting the blades varies even if the impeller rotates constantly, and it is blown off by hitting the blades. The grain direction is also irregular. However, when the medicine is continuously supplied from the storage unit, there is a tendency in the region where the particles blown off by the impeller are scattered. In other words, in the case of a spraying device that rotates the impeller clockwise when viewed from above, the drug particles are densely sprayed on the left side of the rice transplanter as viewed from the rear and not far from the spraying device, and the closer to the right Sprinkled thinly. The cause is that even if it is bounced by the impeller, it will not fly backward, and the particles that have lost the kinetic energy for splashing by hitting other parts that do not rotate will fall immediately behind the sprayer. Be analyzed.
When the rice transplanter reciprocates in the paddy field for planting seedlings, the distribution of the grain shading becomes a striped pattern in which the grain shading appears alternately in the paddy field.

  The present invention has been made in view of the above circumstances, and provides a rice transplanter-mounted drug spraying device that can uniformly spray drug particles on a paddy field with the smallest possible difference in light and shade distribution. It is an object.

The rice transplanter-mounted drug spraying apparatus according to the present invention is a rice transplanter-mounted drug spraying apparatus that sprays a granular drug in parallel with rice planting work,
A storage section for storing the medicine;
It is installed below the container, is rotatable in a circumferential direction around a substantially vertical rotation axis, and blows off the drug particles dropped from the container onto the upper surface of the disk by its own rotation. Impeller,
A motor that rotationally drives the impeller about the rotation axis;
The impeller has a main disk centered on the rotation axis;
A plurality of blade portions that are implanted on the upper surface of the main disk, and blow off the particles of the medicine that are dropped from the storage portion onto the upper surface of the main disk with the rotation of the main disk;
Above the main disk, arranged in the same center with respect to the main disk, comprising an annular sub-disk fixed to the main disk,
The drug particles may be supplied from the storage unit onto the main disk through the inside of the sub disk.

In the rice transplanter-equipped medicine spraying device according to the present invention, since the movement of the drug particles hitting the impeller blades is naturally accompanied by irregularities, the angle of the particles hitting the blade parts is constant even though the impeller rotation is constant. The direction of the grains that are blown off by hitting the blades is irregular. Therefore, if an impeller with an annular sub-disk mounted on the main disk is used, the drug particles are located on the left side of the rice transplanter as seen from the top and not far from the spraying device, as in conventional machines. The phenomenon of spraying deeply and spraying thinly toward the right has been greatly improved.
Such an improvement is that the particles blown off by impeller blades do not fly backward, but hit the secondary disk attached above the main disk and the direction of scattering is regulated and directed backward. In addition, since the sub-disk also rotates, it is analyzed that it is difficult for the grains hitting it to lose the kinetic energy for scattering and earn a flight distance. When this impeller was adopted, it was confirmed that even if the rice transplanter reciprocates in the paddy field, it is difficult to produce a striped pattern in which the distribution of the grain density alternately appears in the paddy field.

In the rice transplanter-mounted medicine spraying device of the present invention, it is preferable that an outer diameter of the sub-disk is larger than an outer diameter of the main disk.
Since the particles that are blown off by hitting the blades are given kinetic energy toward the outside, the outer diameter of the sub-disk is the outer diameter of the main disk in order to apply the particles that are bounced upward to the sub-disk. Should be larger than the diameter.

In the rice transplanter-mounted medicine spraying device of the present invention, the blade portion has a trapezoidal shape with a width narrowing toward the upper end when viewed from the side, and from the corner portion where the oblique side and the upper side near the rotation axis intersect. The distance to the rotation axis is preferably substantially equal to the inner hole radius of the sub-disk.
For example, if the blade is rectangular, the distance from the corner where the side near the rotation axis and the upper side intersect to the rotation axis may be smaller than the inner hole radius of the sub-disk. In this case, the grains hitting the blades in the vicinity of the corners do not hit the sub-disk and jump out on the impeller through the inner hole, so that the effect of the sub-disk cannot be enjoyed. However, if the blade part is trapezoidal as described above, the particles that hit the corner part in the case of a rectangle fall without hitting the blade board at that position, and fall on the main disk and change the angle. , The accuracy of hitting the secondary disk increases.

  According to the rice transplanter-mounted drug spraying apparatus according to the present invention, the drug particles can be uniformly sprayed on the paddy field with the difference in density as small as possible.

It is a figure showing an embodiment of a rice transplanter loading type medicine spraying device of the present invention, and is a schematic diagram showing a structure of a rice transplanter loading type medicine spreading device. It is a perspective view which shows the spreading | diffusion mechanism which comprises a rice transplanter mounting-type chemical | medical agent dispersion apparatus. It is a disassembled perspective view which shows the internal structure of a spreading | diffusion mechanism. It is a disassembled perspective view which shows the shape of an impeller. It is sectional drawing of the impeller along a rotating shaft direction.

An embodiment of the rice transplanter-mounted medicine spraying device of the present invention will be described with reference to FIGS.
A rice transplanter-mounted medicine spraying device (hereinafter, simply referred to as a spraying device) shown in FIG. 1 is installed further behind a seedbed bed S located at the rear of the rice transplanter and sprays the granular drug in parallel with the rice transplanting work. A spraying operation control mechanism 2 which is operated by using the reciprocating motion of the mechanism 1 and the nursery bed S provided in the rice transplanter to intermittently spray the agricultural chemicals by the spraying mechanism 1 in synchronization with the rice transplanting work, and the spraying mechanism And a power supply mechanism 4 for supplying electric power for operating 1. The cords connected to each mechanism are collected in the center box 5, and the center box 5 is provided with a main switch 5a for intermittently operating the spraying device.

  The spraying mechanism 1 includes a storage unit 10 in which the agricultural chemicals of the rice transplanter are stored, and a nozzle unit 12 that ejects a granular medicine supplied through a pipe unit 11 attached to the lower part of the storage unit 10. It is fixed to a gate-type support frame 13 erected rearward.

  The storage unit 10 has a vertically long box shape, and a detachable lid 10a is attached to the upper surface of the storage unit 10. The lid 10a is removed to store the granular medicine inside. The pipe portion 11 communicates with the inner bottom of the storage portion 10 formed in a mortar shape, and a nozzle portion 12 is attached to a tip that extends downward.

  As shown in FIG. 2, the pipe part 11 excluding the storage part 10 and the nozzle part 12 leading to the pipe part 11 are stored in a waterproof case 41. The waterproof case 41 is made of a resin such as plastic, and a spray port 41a for a granular medicine is provided in the front. The spray port 41a is formed in a rectangular shape having a horizontally long cross section so as not to hinder the scattering of the agricultural chemicals bounced by the impeller 17, which will be described later, and the width increases as the distance from the impeller 17, which will be described later increases. Has been. A mounting portion 41 b that is fixed to the support frame 13 is provided at the rear portion of the waterproof case 41.

  On both sides in the width direction of the spraying port 41a, rectifying plates 42a and 42b for regulating the spraying width and spraying direction of the agrochemical that is bounced and scattered by the impeller 17 are supported in a tiltable manner inside the spraying port 41a. ing.

  As an application amount adjusting mechanism, a dial 45 is attached to the side surface of the waterproof case 41 so as to be rotatable. The dial 45 is provided with a needle portion 45 a, and the amount of the agricultural chemical sprayed can be arbitrarily adjusted by aligning the needle portion 45 a with the scale carved on the side surface of the storage portion 10.

  As shown in FIG. 3, the nozzle part 12 is configured by combining a connecting part 12a connected to the pipe part 11, a shielding valve case 12b incorporating a shielding valve 28, an upper case 12c, and a lower case 12d. Yes.

  A motor 18 is installed between the upper case 12c and the lower case 12d. The rotating shaft of the motor 18 protrudes from the lower surface of the lower case 12d, and the impeller 17 is attached to the rotating shaft.

  As shown in FIGS. 4 and 5, the impeller 17 has six blade portions 17 b erected in the circumferential direction on a main disk 17 a fixed at the center of the rotation shaft of the motor 18. The surface direction is made to coincide with the width direction of 41a, and it is arrange | positioned under the nozzle part 12. FIG. The impeller 17 is rotatable in the circumferential direction around the rotation axis of the motor 18, and blows off the particles of the medicine dropped from the storage portion by its own rotation.

More specifically, the impeller 17 is implanted on the upper surface of the main disc 17a and the main disc 17a that can be rotated in the circumferential direction around the rotation axis of the motor 18, and the main circle is passed through the pipe portion 11 from the storage portion 10. A plurality of blade portions 17b that blow off the particles of the medicine dropped on the upper surface of the plate 17a as the main disc 17a rotates, and the center of the main disc 17a is made to be the same as the center above the main disc 17a. And an annular sub disk 17c which is disposed and fixed to the main disk 17a.
The blade portions 17b are arranged on the upper surface of the main disc 17a so as to be spaced apart at equal intervals in the circumferential direction. Further, the main disc 17a is formed in a dish shape with a peripheral portion raised with respect to the central portion in a cross-sectional view, and the rotating shaft of the motor 18 is moved along with the rotation of the impeller 17 with the particles dropped on the main disc 17a. It is designed to play diagonally upward.
Three columnar parts 17d are suspended from the lower surface of the auxiliary disk 17c in addition to the blade parts 17b. The main disc 17a is fixed to the lower end of the columnar portion 17d via a screw 17e. A stem portion 17f protruding upward is formed at the center of the main disk 17a. The rotation shaft of the motor 18 is inserted into a small hole formed at the center of the stem portion 17f, and a screw is inserted into the stem portion 17f from the side. Is fixed to the rotating shaft of the motor 18 by screwing.

  Inside the nozzle part 12, a supply pipe 19 for supplying the agricultural chemical supplied from the storage part 10 through the pipe part 11 onto the main disk 17a is provided. The supply pipe 19 communicates with the pipe portion 11 inside the nozzle portion 12 so that the agrochemical is dropped toward the impeller 17 through the hole of the lower case 12d.

  The impeller 17 rotates in one direction by driving the motor 18, and the pesticide supplied from the storage unit 10 to the main disc 17a through the pipe unit 11 is blown off by the blade unit 17b that rotates together with the main disc 17a. It is like that. The drug particles are supplied from the storage portion 10 through the pipe portion 11 to the upper surface of the main disc 17a through the inside of the sub-disc 17c.

  The nozzle portion 12 is provided with a solenoid 26 that operates when the switch 25 is connected. A shield valve 28 that fixes the pipe portion 11 and opens the pipe portion 11 by the operation of the solenoid 26 to supply the agricultural chemical toward the impeller 17 is fixed to the drive shaft of the solenoid 26.

  The spraying operation control mechanism 2 adjusts the amount of the agricultural chemical that passes through the flow port 20a in the nozzle unit 12 for each opening / closing operation of the shielding valve 28 operated by the solenoid 26, and thereby the nozzle unit 12 A mechanism for adjusting the amount of the pesticide to be ejected is provided (for details, refer to JP 2006-320340 A).

  The power supply mechanism 4 also serves as a battery mounted on the rice transplanter as an actual power supply source. The center box 5 is installed at a position that can be reached by an operator boarding the driver's seat.

  The center box 5 has a built-in control unit 54 that operates the spraying mechanism 1 by obtaining the output of the proximity switch 52. The control unit 54 operates the solenoid 26 intermittently. The operation interval (time) of the solenoid 26 becomes longer or shorter in synchronization with a change in the speed of the rice planting operation of the rice transplanter.

  The spraying device configured as described above is used as follows. First, when a main switch 5a is connected to a rice transplanter mounted on a seed bed platform S with a bundle of seedlings grown in a seedling box, the motor 18 is activated and the impeller 17 starts rotating.

  When the planting operation is started, the nursery bed S starts to reciprocate sideways in synchronization with the operation of scraping the seedling with the scraping claw. When the nursery bed S reciprocates, the control unit 54 detects the movement, and the solenoid 26 operates intermittently. Each time the solenoid 26 is actuated, the shielding valve 28 reciprocates along the partition wall 20 to open and close the flow port 20a. When the circulation port 20 a is opened and closed, the pesticide that has passed through the circulation port 20 a falls on the impeller 17 through the supply pipe 19. The pesticide that has fallen on the impeller 17 is bounced by the continuously rotating impeller 17 and is ejected toward the rear of the rice transplanter through the ejection port 12f and the spray port 41a.

  In the case of the spraying device configured as described above, the movement of the drug particles falling from the storage unit 10 onto the upper surface of the main disk 17a and hitting the blades 17b is naturally accompanied by irregularities. Even if the rotation is constant, the angles of the grains hitting the blade portion 17b are various, and the direction of the particles hitting and flying off the blade portion 17b is also irregular. Therefore, when the impeller 17 in which the annular sub-disk 17c is mounted on the main disk 17a is adopted, it is located on the left side of the rice transplanter as viewed from the rear and not so far from the spraying device as in the conventional machine. The phenomenon of drug particles being sprayed thickly and thinning toward the right has been greatly improved.

  In such an improvement, the direction of scattering is restricted by hitting the sub-disk 17c attached above the main disk 17a, even if the particles bounced off by impeller 17b do not fly backward. It is analyzed that the reason is that heading backward and the sub-disk 17c is also rotating, so that the grains hitting it hardly lose the kinetic energy for scattering and earn a flying distance. When this impeller was adopted, it was confirmed that even if the rice transplanter reciprocates in the paddy field, it is difficult to produce a striped pattern in which the distribution of the grain density alternately appears in the paddy field. As described above, according to the spraying device including the impeller 17 configured as described above, the drug particles can be uniformly sprayed on the paddy field with the difference in density as small as possible.

  By the way, the grains which are blown off by hitting the blades 17b are given kinetic energy toward the outside as a matter of course. Therefore, as shown in FIG. 5, the outer diameter of the sub-disk 17c is made larger than the outer diameter of the main disk 17a in order to apply the particles bounced upward to the sub-disk 17c with high accuracy.

  The blade portion 17b has a trapezoidal shape that becomes narrower toward the upper end when viewed from the side. The distance from the corner portion where the oblique side and the upper side near the rotation axis of the motor 18 intersect to the rotation axis is a sub-circle. It is approximately equal to the inner hole radius of the plate 17c. For example, if the blade is rectangular, the distance from the corner where the side near the rotation axis and the upper side intersect to the rotation axis may be smaller than the inner hole radius of the sub-disk. In this case, the grains hitting the blades in the vicinity of the corners do not hit the sub-disk and jump out on the impeller through the inner hole, so that the effect of the sub-disk cannot be enjoyed. However, when the blade portion is trapezoidal as described above, in the case of a rectangle, the particles hitting the corner portion fall without hitting the blade plate at that position, and fall on the main disk 17a to change the angle. Therefore, the probability of hitting the secondary disk 17c increases.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited to said embodiment. Additions, omissions, substitutions, and other modifications can be made without departing from the spirit of the present invention. The present invention is not limited by the above description, and is limited only by the matters described in the claims.

The present invention is a rice sprayer-mounted medicine spraying device having a structure in which granular medicine is blown off by rotation of the impeller, and the medicine particles dropped from the storage unit onto the upper surface of the impeller,
The impeller is planted on a main disk centered on the rotation axis and an upper surface of the main disk, and the drug particles dropped onto the upper surface of the main disk from the storage portion are disposed on the main disk. A plurality of blade portions that flip off with rotation, an annular sub-disc disposed above the main disc so as to have the same center as the main disc, and fixed to the main disc; It is related with a rice transplanter loading type medicine spraying device characterized by comprising.
According to this rice transplanter-mounted medicine spraying device, it is possible to spray the paddy field uniformly with as little difference as possible in the distribution of shades.

1 spraying mechanism,
10 storage section,
11 Pipe section,
12 nozzle part,
17 Impeller,
17a Main disc,
17b feathers,
17c secondary disk,
17d columnar part,
18 Motor

Claims (3)

A rice transplanter-mounted drug spraying device that sprays granular drugs in parallel with rice planting work,
A storage section for storing the medicine;
It is installed below the container, is rotatable in a circumferential direction around a substantially vertical rotation axis, and blows off the drug particles dropped from the container onto the upper surface of the disk by its own rotation. Impeller,
A motor that rotationally drives the impeller about the rotation axis;
The impeller has a main disk centered on the rotation axis;
A plurality of blade portions that are implanted on the upper surface of the main disk, and blow off the particles of the medicine that are dropped from the storage portion onto the upper surface of the main disk with the rotation of the main disk;
Above the main disk, arranged in the same center with respect to the main disk, comprising an annular sub-disk fixed to the main disk,
The rice transplanter-mounted medicine spraying device, wherein the medicine particles are supplied from the storage unit onto the main disk through the inside of the sub disk.   2. The rice transplanter-mounted medicine spraying device according to claim 1, wherein an outer diameter of the sub-disk is larger than an outer diameter of the main disk.   When viewed from the side, the blade portion has a trapezoidal shape that becomes narrower toward the upper end, and the distance from the corner portion where the oblique side and the upper side near the rotation axis intersect to the rotation axis is the width of the sub-disk. 3. The rice transplanter-mounted medicine spraying device according to claim 1 or 2, wherein the medicine spraying device is substantially equal to an inner hole radius.

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