JPH0454847Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a duster drug discharging device that can spray the drug by discharging the drug in the pesticide bag from the blast pipe.

[Prior art] Previously, Utility Application No. 147114 filed by the applicant
As can be seen in the issue, a pesticide bag is installed in communication with the air supply port and the chemical discharge port facing in the middle of the air pipe, and a pressurized pipe is hung from the air supply port to the lower part of the pesticide bag. In the duster, the chemical agent in the agricultural chemical bag is discharged from the chemical discharge port into the air pipe and dispersed.

[Problems to be solved by the invention] However, medicines for dusters come in powder and granule forms, and with the conventional structure, powders can be discharged well, but granules are heavy and difficult to blow. The problem was that it was difficult to raise the liquid and resulted in poor ejection.

[Means for solving the problem] The present invention solves the problem and makes it possible to discharge and spray both powder and granules effectively. A powder suction port and a granule suction port located on the lower side are connected to the drug ejection port, respectively, and one of the suction ports can be selectively opened.

[Function] Therefore, in the case of powder, if the granule suction port at the bottom of the suction pipe is closed, the powder that is being stirred by the air supply from the pressurizing pipe will fly up to the top of the suction pipe. The powder will be sucked in from the powder suction port on the side while being discharged from the drug discharge port.In addition, in the case of granules, if you close the powder suction port on the top side of the suction pipe, air will be supplied from the pressure pipe. The granules are sucked through the granule suction port on the lower side of the suction pipe while being stirred by the granules, and are discharged from the medicine discharge port.

[Example] Next, the embodiment shown in the drawings will be described.

FIG. 2 shows a plan view of a portable duster. A grip 11 is installed above an engine 9 and a blower 10, which are arranged side by side with a stand 8 vertically installed at the bottom. In addition to extending the blower pipe 1 to be opened, a handle 13 is extended from the middle of the blower pipe 1, and a handle 13 is provided at the upper part of the small diameter constricted portion 1a formed in the part of the blower pipe 1 near the blower 10 and at the rear of the blower 10. is constructed by connecting both ends of the shoulder band 14.

The upper part of a bowl-shaped cap 15 is connected to the lower part of the small-diameter constricted part 1a, and the upper opening of a flexible agricultural chemical bag 4, which is a commercially available paper bag and is filled with powdered or granular medicine, is connected to the lower part of the small diameter constricted part 1a. When the cap is opened, its upper opening is aligned with the outer periphery of the cap 15, and the cap is tightened with a band or clamp 16 to be attached and detached.

Further, the upper part of the cap 17 formed at the center of the upper part of the cap 15 is provided to protrude into the lower interior of the small diameter throttle part 1a, and the upper part of the cap 17 has a notch so as to open in the direction of air blowing as shown by arrow A. 18
A pressure pipe is formed so that a large number of blowholes 19 formed on the outer periphery of the lower end extend from the inside of the front part of the mouthpiece 17, which is the upstream side of the air blower, to the inside of the lower part of the agricultural chemical bag 4. 5 is installed vertically, and the air supply port 2 that opens at the upper end of the pressure pipe 5 has a small diameter constriction part 1a.
It is installed and configured so that it is slightly lower than the inner bottom surface of the.

A suction pipe 20 is vertically disposed from the lower rear side of the cap 17, and the medicine discharge port 3 at the upper end is lower than the air supply port 2. A wide flat plate shutter 21 that can stand upwardly and simultaneously close while matching above the air supply port 2 and the discharge port 3 is rotatably operated by an external metering lever 22 and mounted on a shaft; A large diameter portion 20 is provided at the lower end of the suction pipe 20, which has approximately the same length as the pressure pipe 5.
A slightly larger granule suction port 7 is formed at the lower part of the suction pipe 20 above the large diameter portion 20a, and a circumferential groove 23 is formed on the outer periphery above the granule suction port 7. A large number of small powder suction ports 6 are formed in the upper part of the suction pipe 20, which is in the vicinity of
4, and a short cylindrical shutter pipe 25 capable of selectively opening one of both suction ports 6, 7 is slidably fitted into the suction pipe 20,
A retaining pin 26 is detachably engaged with both circumferential grooves 23 and 24.

Note that the suction pipe having both suction ports 6 and 7 is
The cap 15 may be constructed as a multilayer structure so that one of the two ports can be opened by rotating one of the ports.
Alternatively, the suction pipe 20 may be provided with a granule suction port 7, so that both suction ports 6, 7 can be selectively opened and closed.

Therefore, the upper opening of the pesticide bag 4 is closed with a cap 15.
The user attaches it to the shoulder strap 14 and carries it around while operating the handle 13 to perform pest control work.If the shutter 21 is stood up as shown in the figure, the upper part of the shutter 21 is a small-diameter aperture. It enters the inner lower part of the part 1a and stands up, and a part of the high-pressure air flowing as shown by arrow A increases in amount while being guided by the shutter 21 and the mouthpiece 17 and flows out into the pressurizing pipe 5, and continues as it is. The spray is ejected from the blast hole 19 into the pesticide bag 4 to stir the pesticide, and at the same time, the shutter 21
The upper side of the drug discharge port 3, which is the rear side of the device, becomes negative pressure, and the drug sucked into the suction pipe 20 flows out from the discharge port 3 into the blower pipe 1 together with high-pressure air, and can be sprayed as is. .

If the drug is a powder, the shutter pipe 25 is inserted into the granule suction port 7 as shown in Figs.
When the shutter pipe 25 is fitted to the outer periphery of the powder suction port 6 and the stop pin 26 is engaged and locked in the peripheral groove 23, the powder that rises to the top of the pesticide bag 4 is sucked in smoothly into the powder suction port 6. If the pesticide is a granular drug, as shown in FIG.
When the stop pin 26 is engaged with and locked in the roller 4, the heavy granules are efficiently sucked into the granule suction port 7 below due to the synergistic effect of the negative pressure suction and the pressurized flow.

In addition, when the shutter 21 is rotated by the metering lever 22, the opening degree of the air supply port 2 and the medicine discharge port 3 can be adjusted simultaneously, and the amount of medicine discharged can be adjusted.

Additionally, if the shutter pipe 25 is placed above the stop pin 26 that is engaged with the circumferential groove 23,
Since both suction ports 6 and 7 can be left open, a large amount of medicine can be sprayed.

[Effect of the invention] As described above, in the present invention, when the medicine is a powder, by closing the granule suction port 7 on the lower side of the suction pipe 20, the medicine can be stirred and blown up by the pressure pipe 5. This means that the powder can be well discharged from the upper drug discharge port 3, and in the case of powder, by keeping the upper powder suction port 6 closed, heavy granules that are stirred by the pressure pipe 5 can be easily discharged. Since the medicine can be well discharged from the lower granule suction port 7, it can be effectively dispersed regardless of whether the medicine is powder or granule, and has the advantage that it can be suitably implemented with a simple structure.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the main parts of an embodiment of the present invention.
Fig. 2 is a plan view of the entire duster, Fig. 3 is a side sectional view of a part thereof, Fig. 4 is a plan sectional view of a part of Fig. 1, and Fig. 5 is an explanatory diagram of the operation of Fig. 1. . 1...Blow pipe, 2...Air supply port, 3...Drug discharge port, 4...Pesticide bag, 5...Pressure pipe, 6...Powder suction port, 7...Grain suction port, 20... ...suction pipe.

Claims (1)

[Scope of utility model registration request] A pesticide bag 4 is provided in communication with an air supply port 2 and a chemical discharge port 3 facing in the middle of the blast pipe 1, and a pressure pipe 5 is provided vertically from the air supply port 2 to the lower part of the pesticide bag 4. and a duster configured with a suction pipe 20 hanging from the drug discharge port 3,
A powder suction port 6 and a granule suction port 7 are provided on the upper and lower sides of the suction pipe 20, and at least one of the suction ports 6 and 7 can be selectively opened. Drug ejection device.