JPH08163949A - Spraying apparatus - Google Patents

Abstract

PURPOSE: To provide a spraying apparatus capable of uniformly diffusing and spraying a fluid material without excessively increasing the rotational speed of a rotary part even if a fluid material such as liquid or powder is poured into the apparatus in large quantity. CONSTITUTION: A fluid supplied to the upper face of a rotary part rotating on a vertical rotary shaft is diffused and sprayed by the centrifugal force generated by the rotation of the rotary part. In a spraying apparatus having the above function, the rotary part is composed of a 1st rotary part 5 and a 2nd rotary part 6 each extending in a plane perpendicular to the rotary shaft 3, the supplying port 9 for the fluid material is placed on the upper surface of the 1st rotary part 5, the 2nd rotary 6 separated below the 1st rotary part 5 is formed to have a diameter larger than the 1st rotary part 5 and the circumference of the 1st rotary part 5 is surrounded with a shielding wall 8 to form a channel in the shielding wall 8 to pass the fluid material by the gravitational force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spraying device for spreading and spraying a fluid such as liquid or powder by a centrifugal force generated by the rotation of a rotating part, and particularly spraying agricultural chemicals in the air by an unmanned helicopter. The present invention relates to a spraying device suitable for use in such a case.

[0002]

2. Description of the Related Art When an unmanned helicopter that can be remotely controlled by radio is used to spray pesticides such as pest control chemicals over the air in forests or farmlands, the liquid or powdered chemicals are sufficiently dispersed. As a spraying device for spraying in a state where it is sprayed, the medicine filled in the tank is injected into the rotating part (double disk) that rotates by the vertical axis of rotation from the inlet, and the centrifugal force generated by the rotation of the rotating part. It is conventionally known to use a structure in which a drug is diffused and scattered around the outside. (See Japanese Patent Publication No. 1-18784)

[0003]

By the way, in the conventional spraying device as described above, when the amount of the drug injected from the injection port into the device increases, there is a problem in the arrangement of the injection port with respect to the rotating part. Since a large amount of drug is injected unevenly to one side of the rotating part, in order to evenly disperse the drug to the surroundings, it is necessary to increase the rotation speed of the rotating part and apply a large centrifugal force to sufficiently diffuse the drug. Occurs.

However, since the drug spraying device itself is used while being mounted on an unmanned helicopter, there is a design and cost constraint in order to increase the number of rotations of the rotating part. Moreover, its realization is difficult.

An object of the present invention is to eliminate the above-mentioned inconveniences of the conventional spraying apparatus,
More specifically, even if a large amount of fluid such as liquid or powder is injected into the device, the fluid should be diffused and dispersed evenly without increasing the rotation speed of the rotating part. It is an object of the present invention to provide a spraying device capable of

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems and to achieve the object, the present invention provides a rotating part with a fluid injected into the upper surface of the rotating part which is rotated by a vertical rotating shaft. In a spraying device that is spread by a centrifugal force due to rotation and sprayed, the rotary part includes a first rotary part and a second rotary part extending in a plane direction orthogonal to a rotation axis, and a fluid inlet Is arranged with respect to the upper surface of the first rotating portion, and the second rotating portion which is provided below the first rotating portion and is spaced apart from the first rotating portion is formed to have a larger diameter than the first rotating portion. The periphery of the portion is surrounded by the shielding wall portion, and a passage through which the fluid can pass by gravity is provided inside the shielding wall portion.

Further, in such a spraying device, as described in the above-mentioned claim 2, the shielding wall part surrounding the first rotating part remains stationary without rotating together with the first rotating part. It is characterized by being.

[0008]

[Operation] With the above configuration, the fluid injected from the injection port is first diffused to some extent by the centrifugal force due to the rotation of the first rotating part and scattered outward in the radial direction, and then the first rotating part is used. The scattered fluid collides against the shielding wall portion that covers the periphery of the first rotating portion, is crushed, and is further diffused on the wall surface. Then, the fluid diffused on the wall surface of the shielding wall part naturally falls on the upper surface of the lower second rotating part due to gravity, and is further diffused by the centrifugal force due to the rotation of the second rotating part to be radially outside. Since it is scattered toward one side, it is evenly scattered from the spraying device to the periphery thereof and sprayed.

According to the structure described in claim 2, since the fluid scattered by the first rotating portion obliquely intersects the wall surface of the shielding wall portion and collides with the wall surface of the shielding wall portion. The fluid will be more diffused in the direction of rotation as compared to a vertical collision.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the spraying device of the present invention will be described below with reference to the drawings.

1 to 4 show an embodiment of a spraying device of the present invention. In a spraying device 1 for spraying a medicine, a motor is downwardly moved from a drive motor part 2 having an electric motor part incorporated therein. The rotating shaft 3 of the motor protrudes from the rotating shaft 3 of the motor, and the first rotating portion 5 and the second rotating portion 5 which extend through the hub portion 4 in the plane direction orthogonal to the axis of the rotating shaft 3 respectively. The parts 6 are fixed so as to be separated from each other in the vertical direction.

That is, in the cylindrical hub portion 4 fixed to the rotary shaft 3 of the motor, the hub portion 4 is provided at a substantially intermediate position in the vertical direction.
Disc-shaped first rotating part 5 having an appropriate number of through holes 5a formed therein
Is integrally formed with the hub portion 4, and a dish-shaped second rotating portion 6 having a diameter considerably larger than that of the first rotating portion 5 is fixed to the lower end of the hub portion 4.

An inverted dish-shaped cover portion 7 is fixed below the drive motor portion 2 so as to cover the upper surface of the second rotating portion 6, and the hub portion 4 and the first rotating portion 5 are covered. It is in a state of being housed in a space formed between the portion 7 and the second rotating portion 6, and the peripheral portion of the second rotating portion 6 and the cover portion 7 are provided.
A gap is continuously provided in the circumferential direction between the peripheral portions of the.

A shield wall portion 8 is integrally formed on the lower surface of the cover portion 7 so as to surround the periphery of the first rotating portion 5, and the inner surface of the shield wall portion 8 and the outside of the first rotating portion 5 are formed. A gap is continuously provided in the circumferential direction between the peripheral edges, and a gap is also provided continuously in the circumferential direction between the lower end of the shielding wall portion 8 and the upper surface of the second rotating portion 6. There is.

Further, a nozzle-shaped injection port 9 is provided so as to penetrate the cover portion 7 and the shield wall portion 8 so as to inject the drug toward the upper surface of the first rotating portion 5.

FIGS. 5 to 7 show the whole of an unmanned helicopter in which the above-mentioned chemical spraying device 1 is installed. The body 11 of the helicopter is wirelessly operated by remote control. Although not shown, it is a model radio-controlled helicopter or the like, and a controller and an engine for freely controlling the aircraft to fly by inducing a transmitter from the ground are built in the aircraft body 11. And the body 1
1 has a built-in controller and a power supply for operating the spraying device 1 installed for the device 1 by inducing a transmitter from the ground.

A pair of tanks 12 for filling a medicine into the body 11 of such a helicopter,
12 are provided on both sides of the machine body 11, pumps 14 for delivering the medicine from inside the tank 12 via the medicine introducing portion 13 are arranged below the machine body 11, and from both lower sides of the machine body 11 to the outside, The delivery pipes 15 and 15 for delivering the medicine discharged from the pump 14 are extended,
The spraying device 1 of the present embodiment is installed at the tip of each of the supply pipes 15 and 15 in order to diffuse and disperse the medicine supplied by the supply pipe 15.

That is, as shown in FIGS. 3 and 4,
The drive motor unit 2 and the cover unit 7 of the spraying device 1 are fixed to a connecting member 16 integrally extending from the tip of the feed pipe 15, and further, as shown in FIG.
A nozzle-shaped injection port 9 that communicates with the inside of the supply pipe 15 and projects obliquely downward from the supply pipe 15 is inserted into the spraying device 1 through the cover portion 7.

Incidentally, the respective drug introduction parts 13, 13 and the pump 1
The suction port of 4 is connected by a tube 21, the discharge port of the pump 14 and each of the feed pipes 15, 15 are connected by a tube 22, and the wiring 23 from the motor in the pump 14 and the spraying device 1 are connected. The wiring 24 extending from the drive motor unit 2 through the feed pipe 15 means the body 1
The controller and the power source in 1 are collectively connected by a coupler 25.

The operating state in which the medicine is sprayed from the spraying device 1 by the unmanned helicopter in which the above-mentioned parts are arranged will be explained. The pump 14 and the spraying device are remotely operated while the helicopter is flying by the guidance of the transmitter. By driving each motor of the drive motor unit 2 of the above, the drug in the tank 12 is sucked into the pump 14 through the drug introducing unit 13 and the tube 21, and is discharged from the pump 14 so that the tube 22 and the feeding pipe 15 Through the injection port 9 and fed into the spraying device 1.

Then, the medicine injected from the injection port 9 is first diffused to some extent by the centrifugal force due to the rotation of the first rotating portion 5 and scattered outward in the radial direction, and then scattered by the first rotating portion 5. The drug thus struck collides against the shielding wall portion 8 that covers the periphery of the first rotating portion 5, is crushed, and is further diffused on the inner wall surface thereof.

Next, the drug diffused on the inner wall surface of the shield wall portion 8 is gravitationally moved downward by using a circumferentially continuous gap between the outer peripheral edge of the first rotating portion 5 and the shield wall portion 8 as a passage. The drug that naturally drops on the upper surface of the second rotating unit 6 and naturally drops on the upper surface of the second rotating unit 6 is further diffused by the centrifugal force generated by the rotation of the second rotating unit 6 and scattered outward in the radial direction. Through the gap between the peripheral portion of the second rotating portion 6 and the peripheral portion of the cover portion 7, it is sprayed from the spraying device 1 to the periphery thereof.

According to the drug spraying device 1 of the present embodiment as described above, the amount of the drug injected into the spraying device 1 from the injection port 9 increases, and a large amount of the drug is transferred to the first rotating part 5. Even if the drug is biased toward the side, the injected drug is diffused to some extent by the first rotating portion 5, further diffused by the inner wall surface of the shielding wall portion 8, diffused again by the second rotating portion 6, and then sprayed. Since the drug is sprayed around the device 1, the drug can be sprayed in a state in which the drug is evenly diffused even if the rotation speed of the rotary shaft 3 by the drive motor unit 2 is not increased so much.

8 and 9 show another embodiment of the spraying device of the present invention. Compared with the above embodiment, the specific structure of the first rotating portion 5 has a through hole 5a. The difference is that it is not a disk shape but a turbine shape composed of a plurality of blades 5b.

In each of the above-mentioned embodiments, the shield wall portion 8 surrounding the first rotating portion 5 is provided.
However, without rotating with the first rotating portion 5, the cover portion 7
Since it remains stationary as a unit, the medicine scattered by the first rotating portion 5 obliquely intersects with the inner wall surface of the shielding wall portion 8 and collides vertically with the wall surface. Compared to the case, it has the advantage that the drug is more diffused in the direction of rotation.

The spraying device of the present invention is not limited to the one in which the shield wall portion 8 remains stationary integrally with the cover portion 7 as shown in each of the above-mentioned embodiments. For example, FIG. As shown in, the shielding wall portion 8 is formed integrally with the first rotating portion 5, and is diffused on the inner wall surface of the shielding wall portion 8 at a position close to the shielding wall portion 8 of the first rotating portion 5. It is also possible to implement by a structure in which the medicine passing hole 5c is penetrated so that the medicine can naturally drop on the upper surface of the second rotating portion 6 below by gravity.

Although the respective embodiments in which the spraying device of the present invention is used for spraying a drug by an unmanned helicopter have been described above, the present invention is not limited to the above-described specific uses and structures. Needless to say, it can also be used for other purposes in which a fluid such as liquid or powder is dispersed and sprayed, and its specific structure can also be appropriately modified in design. .

[0028]

According to the spraying device of the present invention as described above, even if a large amount of fluid such as liquid or powder is injected into the device, the number of rotations of the rotating part for driving the device can be controlled. The fluid can be evenly distributed and distributed around it without increasing too much.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a spraying device of the present invention.

FIG. 2 is a bottom view of the inside of the device taken along the line AA of FIG.

FIG. 3 is a side view of the spraying device shown in FIG.

FIG. 4 is a top view of the spraying device shown in FIG.

FIG. 5 is a side view showing the whole chemical spraying device by an unmanned helicopter in which the spraying device of the present invention is used.

FIG. 6 is a bottom view of the chemical spraying device using the unmanned helicopter shown in FIG.

7 is a front view of the unmanned helicopter shown in FIG. 5 with a part of the drug spraying device omitted.

FIG. 8 is a partially omitted sectional view showing another embodiment of the spraying device of the present invention.

9 is a bottom view of the main part inside the device taken along the line BB of FIG. 8. FIG.

FIG. 10 is a sectional view showing still another embodiment of the spraying device of the present invention.

FIG. 11 is a bottom view of the inside of the device taken along the line CC of FIG.

[Explanation of symbols]

 1 spraying device 3 rotating shaft 5 first rotating part 6 second rotating part 8 shielding wall part 9 inlet

Claims (2)

[Claims] 1. A sprinkling device in which a fluid injected into the upper surface of a rotating portion that rotates by a vertical rotating shaft is diffused and sprinkled by a centrifugal force generated by the rotation of the rotating portion, and each rotating portion rotates. It is composed of a first rotating part and a second rotating part extending in a plane direction orthogonal to the axis, and the fluid inlet is arranged with respect to the upper surface of the first rotating part, and is spaced below the first rotating part. The second rotating portion provided as is formed to have a larger diameter than the first rotating portion, the periphery of the first rotating portion is surrounded by the shielding wall portion, and the fluid is inside the shielding wall portion. A spraying device having a passage through which gravity can pass. 2. The spraying device according to claim 1, wherein the shielding wall part surrounding the first rotating part remains stationary without rotating together with the first rotating part.