JPH08131050A - Granule applicator - Google Patents

Abstract

PURPOSE: To provide a granule applicator equipped with an on-off shutter operating smoothly in the beginning and ending an application work, capable of preventing granules from being unnecessarily discharged and causing no failure thereof. CONSTITUTION: A horizontally slidable on-off shutter 16 is set up at an appropriate point along a granule falling feed pipe channel 3 from a tank for granules P to this applicator, a chipped face 22a is formed on the inner circumference of the shutter-receiving plane 22 of the discharge pipe channel 3b under the shutter 16, and also, at the nearly central part of the front end of the closing direction of the shutter 16, a corner projected toward the closing direction is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spraying device having an opening / closing shutter for spraying granular chemicals such as fungicides, insecticides, herbicides, fertilizers, seeds, etc. (hereinafter simply referred to as granular matter). The structure is characterized by smooth operation of the open / close shutter during spraying work and at the end of work.

[0002]

2. Description of the Related Art Conventionally, for example, an aerial spraying device utilizing a small aircraft such as a radio control helicopter has been provided as a spraying device for particulate matter.

The aerial spraying device is a tank (hereinafter referred to simply as "tank") for storing particulate matter supported by the body of an aircraft such as a radio-controlled helicopter, and a centrifuge supported below the tank and horizontally rotated by a motor. It is composed of a discharge plate and the like (see Japanese Utility Model Laid-Open No. 6-3012).

According to the present invention, an opening / closing shutter for supplying and stopping the supply of granular material provided between the tank and a spraying device, for example, the centrifugal discharge plate, and more specifically, a granular type equipped with a slide type opening / closing shutter. The present invention relates to the structure of an object dispersal device.

[0005]

In the case of the above-mentioned slide type opening / closing shutter, when closing at the end of spraying work or the like, particulate matter is caught between the opening / closing shutter and the shutter receiving surface of the discharge pipe line thereunder. In some cases, the open / close shutter could not be closed completely. In that case, there is an inconvenience that the particulate matter continues to flow out.

This is remarkable in the case of an aerial spraying device using an aircraft such as a radio-controlled helicopter whose opening / closing shutter is opened / closed by a servomotor having a weak actuating force, which may cause device failure or open / close. The shutter may not be opened smoothly in some cases.

The present invention has been made in view of the above circumstances, and provides a granular material spraying device in which the opening and closing shutter is smoothly opened and closed, and therefore, unnecessary waste of the granular material is prevented and no failure occurs. With the goal.

[0008]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a horizontally slidable opening / closing for opening and closing a granular material drop supply pipeline from a tank of granular material to a spraying device. A shutter is provided, and a killing surface is formed on the inner periphery of the shutter receiving surface of the discharge conduit below the opening / closing shutter, and preferably in the closing direction at the approximate center of the front end of the opening / closing shutter. The projected corner portion is configured.

[0009]

The granular material spraying apparatus of the present invention is provided at an appropriate position of the granular material drop supply pipeline 3, and the discharge pipeline 3 below the horizontally slidable opening / closing shutter 16 for opening and closing the pipeline 3 is provided.
A killing surface 22a is formed on the inner periphery of the shutter receiving surface 22 of b.

Therefore, when the opening / closing shutter 16 is closed, the particulate matter located between the opening / closing shutter 16 and the shutter receiving surface 22 of the discharge pipe line 3b below the dropping shutter 16 is dropped from the killing surface 22a, The open / close shutter 16 is always completely closed without being sandwiched between them, and the subsequent outflow of particulate matter is completely prevented.

Further, according to the present invention, since the opening / closing operation of the opening / closing shutter 16 is smooth, the device does not break down.

[0012]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a main part of a radio-controlled helicopter equipped with an aerial spraying device, FIG. 2 is a cross-sectional view of a main part of an opening / closing shutter part of an example granular material spraying device, and FIG. 3 is a view taken along the line III-III of FIG. 4 and 5 are partially cutaway perspective views of the opening / closing shutter portion.

In the radio-controlled helicopter 1 shown in FIG. 1, tanks 2 and 2 for accommodating granular material P are supported on both sides of the machine body in order to keep the weight average on the left and right, and the granular material is downward from each of the tanks 2 and 2. The drop supply pipe lines 3 and 3 for the object P are extended and further merged, and a spraying device S is provided below the junction point 3a of the pipe lines 3 and 3 via an opening / closing shutter 16.

In the figure, 4 is a centrifugal discharging plate of a spraying device S for the granular material P which is horizontally rotated by a DC motor 5, 6 is a cover provided above the centrifugal discharging plate 4, and 7 is an opening / closing shutter 16 described later. Servo motor for opening and closing.

2 to 4 show details of one embodiment of the opening / closing shutter structure.

That is, in order to adjust the supply amount of the granular material P supplied from the tank 2 to the centrifugal discharge plate 4, first, a metering shutter 8 is provided at an appropriate position of the drop supply pipe line 3 of the granular material P. It is provided. Specifically, in the case of the embodiment shown in the drawings, the metering shutter 8 and further below the metering shutter 8 are provided below the confluence 3a of the drop supply pipe 3 extending downward from the tank 2 shown in FIG. An opening / closing shutter 16 to be described later is provided on the side by superposition.

The metering shutter 8 is for maintaining the amount of the particulate matter P supplied from the tank 2 to the centrifugal discharge plate 4 at a predetermined amount according to the purpose of spraying, and at the confluence point 3
In order to adjust the internal aperture ratio of a, the whole is formed in a substantially disc shape slightly larger than the inner diameter of the confluence 3a of the drop supply conduit 3.

Then, the through hole 8a provided at one end of the metering shutter 8 is fitted to the pivot stop pin 10 on the upper surface of the support plate 9 provided at the outer circumference of the conduit at the confluence 3a, and at the other end. A nut 12 is fixed to the constructed vertical piece 11, and a butterfly bolt 13 is screwed onto the nut 12. Furthermore, the nut 12 is curved corresponding to the position where the nut 12 rotates about the pivot pin 10, and the long hole 1 is formed in the central portion in the vertical direction along the circumferential direction.
A fixed frame 15 provided with 4 is provided. The fixed frame 15 is
It is attached via a spacer 23 to the outer periphery of the discharge pipe line 3b below the confluence point 3a.

In the metering shutter 8 having the above-mentioned structure, the vertical piece 11 is rotated along the fixed frame 15, and the merging point 3a is used by utilizing a scale attached to the outer peripheral surface of the fixed frame 15 (not shown). After adjusting the internal aperture ratio of the fixed frame 1
If the wing bolt 13 is screwed into the nut 12 from the outside of the elongated hole 14 of 5 and tightened, the wing bolt 13 is completely fixed in a predetermined position and supports the load of the upper granular material P. The adjustment range of the metering shutter 8 is the long hole 14 of the fixed frame 15.
Regulated by.

Next, 16 parts of the opening / closing shutter of this embodiment will be described.

The opening / closing shutter 16 is opened / closed in order to supply and block the particulate matter P adjusted by the adjusting shutter 8 to the centrifugal discharge plate 4, and extends along the lower surface of the adjusting shutter 8. And is configured to completely close the internal opening of the confluence 3a.

In the illustrated embodiment, the opening / closing shutter 16
Instead of making the front end in the closing direction circular, a corner 16a protruding in the closing direction is formed in the approximate center of the front end in the closing direction so that the granular material P can be smoothly partitioned.

In the opening / closing shutter 16, a through hole 17 provided near the rear end thereof is fitted below the metering shutter 8 of the pivot stop pin 10 via a spacer 18, and a rear end portion 16b thereof is arranged in the servo motor. 7 or, as shown in FIG. 3, the return spring 1
It is configured to be restored by being assisted by 9. That is, the other end (not shown) of the operating member 20 such as a rod connected to the rear end portion 16b of the opening / closing shutter 16 is connected to the servo motor 7, and the connecting portion of the operating member 20 with the opening / closing shutter 16 is connected to the connecting portion. The return spring 19 is interposed between fixed brackets 21 through which the operating member 20 is inserted.

In this embodiment, a killing surface 22a inclined downward is formed on the inner periphery of the shutter receiving surface 22 of the discharge conduit 3b below the opening / closing shutter 16.

The killing surface 22a is a shutter receiving surface 22 of the discharge conduit 3b below the opening / closing shutter 16.
The opening / closing shutter 1 may be formed on the entire inner circumference of
It is preferable that the opening / closing shutter 16 can be reliably supported if it is within the minimum range of the inner circumference in the front end direction of 6, that is, in the final closing direction.

With the above configuration, when the opening / closing shutter 16 is closed, the opening / closing shutter 16 is closed.
The granular material P located between the shutter receiving surface 22 of the discharge pipe line 3b and the lower portion thereof is dropped from the killing surface 22a and is not caught between them, and the opening / closing shutter 16 is completely closed. And then the granular material P
Is prevented from being wasted, and the subsequent opening is smooth, and no failure occurs.

In the figure, 24 is a sealing washer interposed between the metering shutter 8 and the opening / closing shutter 16.

[0028]

According to the present invention, the opening and closing operation of the opening and closing shutter is smooth, and the granular material is not caught between the opening and closing shutter and the shutter receiving surface of the discharge pipe line below the opening and closing shutter. It is possible to prevent wasteful outflow of objects, prevent the device from being damaged, and smoothly open the open / close shutter.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part of a radio controlled helicopter including an aerial spraying device.

FIG. 2 is a cross-sectional view of a main part of an opening / closing shutter portion of an example of a granular material spraying device according to an example of the present invention.

FIG. 3 is a view taken along the line III-III of FIG.

FIG. 4 is a partially cutaway perspective view of an opening / closing shutter portion according to an embodiment.

[Explanation of symbols]

 2 Tank 3 Drop supply line 3b Lower discharge line 16 Opening / closing shutter 16a Corner part 22 Shutter receiving surface 22a Killing surface P Granular material S Dispersing device

Claims (2)

[Claims] 1. A horizontal slide that opens and closes the pipeline (3) at an appropriate position for dropping the particulate (P) from the tank (2) of the particulate (P) to the spraying device (S). A free opening / closing shutter (16) is provided, and the opening / closing shutter (16)
Shutter receiving surface (22) of the lower discharge conduit (3b)
A particulate matter spraying device, characterized in that a killing surface (22a) is formed on the inner periphery of the. 2. A corner portion (16a) projecting in the closing direction at a substantially central portion of a front end of the opening / closing shutter (16) in the closing direction.
The particulate matter spraying device according to claim 1, wherein