JPH0711807Y2 - Squirt structure of chemical spraying machine - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a spray head structure of a chemical spraying machine used in an orchard, a field, etc., with one valve from a main chemical tank to a sub tank and an injection nozzle. Since the drug supply can be switched and metered, it is extremely easy to handle and can be provided at low cost, and since it is an operation with only one valve,
The feature is that the amount of spray from the spray nozzle can be equalized and continuously sprayed.

[Conventional technology]

In the conventional drug spraying machine, an injection nozzle is generally attached to the tip of a supply pipe connected to a drug tank, and the drug in the drug tank is pressurized and sprayed from the injection nozzle.

Further, as a device for uniformly spraying chemicals, a sub-tank is provided in the vicinity of the jet nozzle, the chemicals are supplied from the main chemicals tank to the sub-tank via a metering valve, and further a metering valve is provided between the sub-tank and the injection nozzle. There is provided a device (see Japanese Utility Model Publication No. 58-27800) in which a chemical in a sub tank is pressurized by blowing air and ejected from an injection nozzle.

[Problems to be solved by the device]

In the method of pressurizing the medicine in the medicine tank, if the position of the injection nozzle changes in height with respect to the medicine tank during the medicine spraying work, the quantity of the medicine sprayed from the injection nozzle varies, resulting in uneven spraying of the medicine. was there.

Further, in order to eliminate the above-mentioned drawbacks, in the above method in which a sub-tank is provided in the vicinity of the injection nozzle, it is necessary to remove the sub-tank and supply the drug, or a metering valve that supplies the drug from the main drug tank to the sub-tank. In addition, the metering valve for supplying the medicine from the sub-tank to the injection nozzle is provided respectively, and it is necessary to increase the cost, and it is necessary to carry out the medicine spraying work while operating the respective metering valves, which is troublesome. there were.

The present invention has been made in view of the above circumstances. Only one valve needs to be operated during the chemical spraying work, the structure and the operation can be provided at a low cost, and the injection amount from the injection nozzle can be made uniform and continuous. It is an object of the present invention to provide a spray head structure of a chemical spraying machine that can perform work on a machine.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention provides a chemical sprayer for supplying chemicals in a main chemicals tank to a spraying nozzle through a sub-tank provided in a spray head, and spraying them in a mist state by pressurizing them with air from a blower pipe. , The chemical liquid supply from the main chemical tank to the sub-tank and the chemical liquid supply from the sub-tank to the injection nozzle are freely switchable, and the chemical liquid supply to the injection nozzle is adjustable, and the diameters are different from each other. It is characterized in that the jet head is provided with one multi-way valve in which a plurality of holes are radially formed.

[Action]

In the present invention, as in the conventional example shown in FIGS. 4 and 5, the first metering valve 11 and the sub tank 9 and the injection nozzle 7 are connected to the supply pipe 10 that connects the main chemical tank 1 and the sub tank 9. It is not necessary to separately provide the second metering valve 17 in the liquid feeding path 15 for the liquid injection, and only one multi-way valve 22 is provided in the injection head 18, and the conventional first metering valve 11 and the second metering valve 22 are provided. The function of the valve 17 is ensured.

Then, for example, when replenishing the medicine in the sub-tank 9,
By rotating the knob portion 16 of the multi-way valve 22, the supply pipe 10
And the holes 19, 20 or 21 of the multi-way valve 22 are adapted, the medicine is fed from the main drug tank 1 to the supply pipe 10 and the hole 1 of the multi-way valve 22.
9,20 or 21, and sub-tank 9 via supply line 12
Is supplied to.

Further, at the time of spraying the medicine, the knob portion 16 of the multi-way valve 22 is rotated to move the liquid feeding passage 15 and the hole 19, 20 or 21 of the multi-way valve 22.
, The chemical is supplied from the sub-tank 9 to the supply path 12 and the holes 19, 20 or 21 of the multi-way valve 22 to the liquid supply path 15.
Further, it is ejected from the ejection nozzle 7.

That is, the hole 19, 20 or 21 of the multi-way valve 22 is cut off from the liquid feed path 15 side when the medicine is supplied from the main medicine tank 1 and is cut off from the supply pipe 10 side when the medicine is sprayed by the knob portion 16. It can be rotated.

As described above, in the present invention, only one valve needs to be operated during the chemical spraying work, the operation is labor-free, the cost can be provided at a lower cost, and the spraying amount from the spraying nozzle can be equalized. The chemical spraying work can be continuously performed.

〔Example〕

An embodiment of the present invention will be described below in detail with reference to the drawings.

4 and 5 show an example of a conventional chemical spraying machine.

The medicine spraying machine has a main medicine tank 1, an engine 2, and a blower 3 mounted on a backpack frame 5 equipped with a backpack band 4, and at the tip of a blower pipe 6 connected to the blower 3 driven by the engine 2. A jet head 18 to which the jet nozzle 7 is attached is provided.

A sub-tank 9 is provided in the vicinity of the spray head 18, and a supply pipe 10 led from the main drug tank 1 is provided.
A first metering valve 11 is attached midway, the supply pipe 10 is connected to a supply passage 12 opening at the bottom of the sub-tank 9, and the air blown to the cylindrical body 13 in which the supply passage 12 is formed. Tube 6
And a liquid feed passage opening to the injection nozzle 7 and a pressurizing passage 14 opening toward the top and communicating with the top of the sub-tank 9.
15 is provided, and a second metering valve 17 whose opening can be adjusted by turning the knob 16 from the outside is attached in the middle of the liquid supply path 15. In the above-mentioned structure, the chemical in the sub-tank 9 is supplied to the injection nozzle 7 through the liquid-sending path 15 by a part of the air blown into the sub-tank 9 from the pressurizing path 14 and is sprayed to the outside. is there.

On the other hand, according to the present invention, as shown in FIG. 1, it is possible to switch between supply of a chemical liquid from the main chemical tank to the sub tank and supply of a chemical liquid from the sub tank to the injection nozzle, and at the same time, to the injection nozzle. The jet head 18 is provided with one multi-way valve 22 that enables the amount of the chemical liquid supply to be adjusted. That is, in the spray head 18 of the present invention, each of the supply pipe 10 led from the main medicine tank 1 and the liquid supply path 15 opening to the injection nozzle 7 is connected to the supply path 12 opening to the bottom of the sub tank 9. The multi-way valve 22 is provided at the intersection of the connecting portions of the two, and the multi-way valve 22 is provided at the intersection thereof, and by rotating the knob 16 from the outside, the drug supply can be switched to the sub-tank 9 side or the injection nozzle 7 side and a hole with a different diameter It is constructed so that metering is possible.

Therefore, the use of the jet nozzle structure of the present invention is inexpensive because it is not necessary to provide the two first metering valve 11 and the second metering valve 17 as in the prior art, and a plurality of nozzles can be used during the chemical spraying operation. The valve is not required to be operated, and the operation is extremely simple.

2 and 3 show a specific example of the configuration of the multi-way valve 22. The multi-way valve 22 is radially formed with three holes 19, 20 and 21 having an equal angle of 120 ° and different diameters.

When the sub tank 9 is replenished with the medicine, the knob portion
By rotating 16 so that, for example, the feed pipe 10 and the thickest hole 19 of the multi-way valve 22 are fitted to each other as shown in FIG. In the cutoff state, only the medicine is supplied from the main medicine tank 1 to the sub tank 9.

Further, at the time of spraying the medicine, for example, as shown in FIG. 3, the knob portion 16 of the multi-way valve 22 is rotated so that the liquid feed passage 15 and the multi-way valve 22 are rotated.
If the holes 21 corresponding to the required spraying amount are adapted, the other two holes 19 and 20 and the side of the supply pipe 10 are cut off, and only the medicine is supplied from the sub tank 9 to the injection nozzle 7.

Furthermore, if the diameters of the holes 19, 20 and 21 provided in the multi-way valve 22 are appropriately changed and configured, the amount of medicine supplied from the main medicine tank 1 to the sub tank 9 and This makes it possible to easily adjust the amount of medicine supplied from the sub tank 9 to the injection nozzle 7, which is extremely advantageous.

However, the drug supply amount can be adjusted to some extent by half-opening or fully-opening the holes 19, 20, 21.

In the above structure, the medicine is supplied from the main medicine tank 1 to the supply pipe 10 in advance, and the multi-way valve 22 provided on the spray head 18 is provided.
Is supplied to the sub-tank 9 via.

After that, the engine 2 is driven to blow air from the blower 3 through the blower pipe 6, and is ejected from the jet head 18 as a high-speed air stream.

As a result, the medicine in the sub-tank 9 is strained by the strainer 24, the flexible tube 23, the supply path 12 and the spray head 18 by a part of the air press-fitted from the pressurizing path 14 into the sub-tank 9.
Is discharged to the liquid supply path 15 through one hole 21 of the multi-way valve 22 of
It is ejected from the ejection hole 26 of the ejection nozzle 7, is carried on the high-speed air stream, and is atomized and ejected.

When the medicine in the sub tank 9 is consumed and decreased, the knob 16 of the spray head 18 is rotated to switch the multi-way valve 22 to switch the main medicine tank 1 through the supply pipe 10 and the supply passage 12 to the sub tank. 9 should be replenished with the medicine.

Although reference numeral 25 in FIG. 1 is a blind plug for a passage processing hole, it also serves as a mark for the switching position of the knob portion 16 of the multi-way valve 22.

[Effect of device]

The present invention requires only one multi-way valve to be operated at the time of spraying the medicine, which is easy to operate and can be provided at low cost.
Moreover, it is possible to obtain an extremely excellent effect such that the spraying amount from the spraying nozzles can be equalized and can be continuously sprayed.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a longitudinal sectional view of a main part thereof, FIGS. 2 and 3 are sectional views taken along line II-II of FIG. 1, and FIG. FIG. 3 shows a case of supplying a medicine, and FIG. 4 shows a longitudinal sectional view of a main part of a conventional example, FIG.
FIG. 1 is an overall perspective view of a medicine spraying machine showing a conventional example. 1 ... Main chemical liquid tank, 6 ... Blower pipe, 7 ... Injection nozzle, 9 ...
Sub tank, 18 ... Spout head, 22 ... Multi-way valve.

Claims (1)

[Scope of utility model registration request] 1. A medicine sprayer for supplying a medicine in a main medicine tank 1 to a spray nozzle 7 through a sub tank 9 provided in a spray head 18, and spraying it in a mist state by pressurizing it with air blown from a blower pipe 6. It is possible to switch between the supply of the chemical liquid from the main chemical tank 1 to the sub tank 9 and the supply of the chemical liquid from the sub tank 9 to the injection nozzle 7, and the injection nozzle 7
One multi-way valve 22 that radially forms a plurality of holes 19, 20 and 21 with different diameters to enable the metering of chemical liquid supply to the
A spraying structure for a chemical spraying machine, characterized in that: