JPS5915603B2 - herbicide applicator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a device for applying a chemical solution to kill weeds to weeds.

A chemical solution that kills weeds is a chemical solution that simply adheres to the leaf tips and reaches the roots and underground stems, killing the entire weed, so perennials can be exterminated, and the herbicide quickly becomes inactive in the soil. It has already been sold as a non-toxic substance to five other crops, and is used in various ways.

By the way, special care is not required in areas where crops are not grown and there are only weeds, but in areas where crops are grown, sufficient care is required. Therefore, it is difficult to adjust the amount of chemical solution supplied, and in particular with hand-type applicators, the current situation is to check the wetness of the application area by touching it with your hand.

15 This invention solves the above-mentioned problems of herbicide applicators, especially hand-type applicators, and its purpose is to automatically dispense the required amount from the tank by utilizing capillary action in the applicator. It is designed to be capable of suctioning, and its structure is characterized by a valve attached to the tank portion that allows air to enter only when the pressure inside the tank reaches a depressurization level 20.

Examples of the present invention will be described below with reference to the accompanying drawings.
In Figure 1, A is the handle rod, and B is the connecting fitting 1 at the tip of the handle rod.
This is an application member connected by.

25 As shown in FIG. 3, for example, the application member B passes a string bundle 3 of motsu through a hole 2 formed in the side wall, passes a liquid supply pipe 5 through a pulled-out sleeve tube 4, and inserts a bundle of string of motsu into a small hole 6 of the liquid supply pipe. It is also possible to have the rear end press-fitted or to wrap the liquid supply pipe in a liquid-absorbing coating part such as a sponge or felt. Let it seep through.

The tank for supplying the chemical liquid to the coating member B may be of a backpack type with the pipe supported at the tip of the handle rod A, but the handle rod A shown in the figure is hollow and also serves as a sealed tank T35, and the tank for supplying the liquid to the coating member B may be It is connected to the pipe 5 through a small diameter slot 8, and in Fig. 2, a part Ba of the slot 8 is also formed in the connecting fitting 1, but the slot 8 and the liquid suction pipe 5 should be connected through a tube. You can also do it. Reference numeral 9 denotes a liquid filling stopper of the tank.

As shown in FIG. 3, the handle A is provided with an on-off valve 10 interposed in a guide hole 8 from the closed tank 7.

10a is its opening/closing lever.

Further, as shown in FIG. 2 and FIG. 4, the handle rod A is provided with a valve C that allows outside air to enter only when the hollow part, that is, the inside of the closed tank 7 becomes negative pressure. A sponge 12 and a valve plate 13 mounted on the sponge are loaded into the box 11, and the sponge 12 is compressed to press the valve plate 13 toward the air inlet 14 to close the air inlet. sponge 12
A weak coil spring can be used instead.

15 is interposed between the valve plate 13 and the inlet port 14, and is connected to the cap 1.
It is a gasket fixed at 6, and the valve plate has a
A ventilation notch 17 is formed which can be closed with this gasket.

The valve C has a small hole 18 in the threaded portion of the handle rod A, and this hole is connected to a thin tube 19 introduced into the closed tank.

This herbicide applicator has the above-mentioned structure, and this herbicide applicator supplies chemical solution from a closed tank to the applicator member at the tip of the handle. Since there is an air intake valve that only allows air to enter, when the amount of liquid in the application part of the application member decreases, the chemical liquid will be sucked in by capillary action, and if the tank becomes negative pressure, a small amount will be released from the air intake valve. The outside air is sucked in, and by repeating this process, the applied area is constantly impregnated with the chemical solution to the extent that it smears, ensuring that the chemical solution adheres to the leaf tips, but there is no drop-off, so there is no damage to the growing crops. This has the effect of making the use of chemical solutions (herbicides) extremely efficient since the outflow of the liquid can be kept to the minimum necessary.

In addition, the structure of the intake valve that allows air to enter only when the inside of the tank becomes negative pressure is provided in the valve box with a valve plate that opens and closes the intake hole, and this valve plate is loaded in the valve box in a compressed state. By constantly pressing the air inlet side with an elastic material that can be compressed and restored, there is an effect that the structure is extremely simple, yet it can operate reliably.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway front view of the herbicide applicator, Fig. 2 is an enlarged cutaway plan view of the main part of the same, and Fig. 3 is an enlarged part of the same. The cutaway front view, FIG. 4, is a further enlarged sectional view taken along the line of FIG. 2. A... Handle rod, B... Application member, 1...
...Consolidated Kinho 3...Motsupu cord bundle, 4...
... Mantle tube, 5 ... Liquid supply pipe, 7 ... Sealed tank, 8 ... Guide hole, 10 ... Opening/closing valve, C ... ...Intake valve, 11...Valve box, 1
2...Sponge, 13...Valve plate, 14
...Inlet, 19...tubule.

Claims (1)

[Scope of Claims] 1. Consists of a handle rod, an application member connected to the tip thereof, and a sealed tank for supplying a chemical solution to the application member, and air is admitted into the tank portion only when the inside of the tank becomes negative pressure. A herbicide applicator characterized by being provided with an intake valve that allows. 2. The herbicide applicator according to claim 1, wherein the tank for supplying the chemical liquid has a hollow inside of the handle rod, and the hollow part is used as the tank. 3 The valve that allows air to enter only when the inside of the tank becomes negative pressure is provided with a valve plate in the valve box that opens and closes the inlet port of the valve box, and this valve plate is provided with a valve plate that opens and closes the inlet port of the valve box The herbicide applicator according to claim 1, wherein the herbicide applicator is always pressed against the inlet side by a resilient elastic material.