JPS5930052B2 - Chemical coating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for applying a fixed amount of a chemical solution such as a herbicide to the leaf tips of plants.

Recently, new herbicides have emerged that can be applied to the tips of leaves of plants, killing the roots of the plants, and once they enter the ground, they become detoxified by microbial decomposition.

However, on the other hand, when this herbicide is used with a sprayer, for example, it scatters around the herbicide and even useful plants may die, which is inconvenient in handling. Therefore, in order to selectively kill only the target plants, a means for selectively applying and adhering the herbicide only to the target plants is required.

The present invention provides an apparatus that can easily selectively apply the above-mentioned plants.

The present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a front view of an example of the present invention, FIG. 2 is a side view, FIG. 3 is a bottom view, FIG. 4 is a sectional view taken along the line ■-■ in FIG. 2, and FIG. It is a sectional view taken along the V line.

In the figure, reference numeral 1 denotes a chemical liquid application head, which includes a cylindrical head main body 2 having a chemical liquid passage hole 3 such as a cutout groove in the axial direction on one side, and a liquid dispensing head that covers the inside of this head main body 2 and the cutout groove 3. It is composed of a sponge or felt-like brush member 4 capable of penetrating and retaining a chemical solution. One end of the chemical liquid application head 1 is connected to a handle 6 via a bending connection member 5 so that the bending angle can be freely adjusted. At one end of the chemical liquid application head 1, there is a chemical liquid introduction pipe 7 that communicates the inside and outside of the head main body 2.
is provided. The handle portion 6 is constituted by a hollow tubular body, the inside of which also serves as a chemical liquid tank 6', and is communicated with the chemical liquid introduction tube T via a flexible conduit 8. A throttle control valve 9 such as a needle valve is provided at the outlet end 7' of the chemical liquid inlet tube T, and the inflow amount of the chemical liquid can be adjusted by rotating the knob 9'. In this way, the chemical liquid in the handle 6 is supplied into the head main body 2 in a predetermined amount by the throttle control valve 9 through the conduit 8 and the chemical liquid introduction pipe T, permeates into the brush member 4, and is caused by its surface tension, etc. Impregnated and retained.

Then, each time the brush member 4 protruding from the cutout groove 3 of the application head 1 comes into contact with a leaf of a plant, etc., and the medicinal solution that has been permeated and retained is transferred to the leaf surface of the plant, the medicinal solution is introduced from the medicinal solution introduction pipe 7. is replenished. Therefore, the operator can selectively apply the chemical by selecting only the weeds to be killed and bringing the brush member 4 of the chemical application head 1 into contact with the leaves of the weeds. FIG. 6 is a front view showing another example of the present invention in which the chemical liquid tank 10 is formed separately from the applicator main body, and the chemical liquid application head 1 is shown in the above-mentioned FIGS. 1 to 5. It is similar to that.

The handle 6 has a size that can be held with one hand of the operator. The separate chemical liquid tank 10 has a chemical liquid inlet 12 in the upper part of the tank main body 11 and an outlet pipe 13 in the lower part. and is connected by a long flexible tube 14. Furthermore, an air reservoir 15 shaped like a &ζ rubber balloon is provided within the tank main body 10, and a pump 16 for pressurizing air into this air reservoir 15 is attached. Reference numeral 17 denotes a belt for the operator to carry the tank main body 1 over his shoulder or on his back.

When the air reservoir 15 is expanded by the pump, the pressure forces the chemical solution from within the tank main body 11 through the flexible conduit 14 into the coating head 1.

Therefore, according to this device, even if the coating head 1 is operated at a higher level than the tank 10 during use, the chemical solution can always be smoothly supplied to and permeated into the coating head 1, and a large amount of the chemical solution can be retained. It is something that can be done. Furthermore, since the balloon-shaped air reservoir 15 is provided, even if the remaining amount of the chemical solution in the tank becomes low, the air held in the air reservoir itself will not mix into the chemical solution, so that air droplets will not reach the application head 1. There is no foaming or splashing when it is pumped in. Although the tank described above is exemplified as one that can be carried on the shoulder or on the back, it may also be equipped with wheels such as casters so that it can run on the road surface.

Further, in order to reduce abrasion, it is preferable to cover the outer periphery of the brush portion with a synthetic resin net or a material on which metal vapor deposition or the like is applied to the surface of the net, since desired abrasion resistance can be maintained.

[Brief explanation of drawings]

FIG. 1 is a front view of an example of the present invention, FIG. 2 is a side view of the same, FIG. 3 is a bottom view of the same, and FIG. 4 is a sectional view taken along the line - in FIG.
FIG. 5 is a sectional view taken along the line V-V, and FIG. 6 is an explanatory diagram showing a partial sectional view of another example of the present invention. 1... Chemical liquid application head, 2... Head main body, 3...
- Cutting groove, 4... brush member, 5... bending connection member,
6...Handle.

Claims (1)

[Scope of Claims] 1. It has a handle and a coating head connected to the tip of the handle so as to be able to freely adjust the refraction angle, and the coating head includes a main body made of a hollow body having a medicinal liquid passage hole, and a main body made of a hollow body having a liquid passage hole. A chemical liquid applicator comprising: a brush portion made of a chemical liquid permeable and retaining material filled across the hollow interior and the chemical liquid passage hole; and a chemical liquid introduction pipe communicating with the hollow interior. 2. The chemical liquid application device according to claim 1, wherein the chemical liquid introduction pipe is connected to a separate chemical liquid tank via a flexible conduit. 3. The chemical liquid applicator according to claim 1, wherein the handle itself constitutes a chemical liquid tank. 4. It has a handle, and a coating head connected to the tip of the handle so as to be able to freely adjust the refraction angle. a brush portion made of a chemical liquid permeable and retaining material filled across the chemical liquid passage hole; a chemical liquid introduction pipe communicating with the hollow interior; and a control valve provided in the chemical liquid introduction pipe for adjusting the chemical liquid flow rate. A chemical liquid applicator comprising: