JP2003024841A - Handy spray - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spray which is handy, small-sized, inexpensive and exhibits excellent work efficiency. SOLUTION: In the use, a rock lever 7 is disengaged at first, a proper quantity of liquid chemical L is injected into a liquid chemical tank 1 from a liquid chemical injecting port 4 and the liquid chemical injecting port 4 is tightly closed. Next, an air pressure tank for compressor is connected to a check valve 2 through a pipe line and air is injected into the liquid chemical tank 1. In the spray, a shoulder belt 14 is hung on the shoulder, a cock 11 is opened and a cock of a nozzle 13 is opened to spray the liquid chemical L through a hose 12 and the nozzle 13 by the pressure in the liquid chemical tank 1. The spray is continued until the liquid chemical L is used up or the air pressure in the liquid chemical tank 1 is lowered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable sprayer used for spraying a chemical solution on agricultural crops and the like.

[0002]

2. Description of the Related Art Conventionally, various types of sprayers have been proposed, and a power sprayer that uses an electric pump or the like, and a manual sprayer that sprays by using a piston or the like to manually store energy. It can be roughly divided into machines.

The former power type sprayer constantly pressurizes the inside of the tank by using an electric pump, an engine pump or the like and sprays the spray liquid from a nozzle.

In the latter human-powered sprayer, normally, a rod-shaped piston mounted on the upper part of the tank is moved forward and backward in the cylinder by human power to compress the air in the chemical liquid tank to increase the internal pressure and use the pressure. And spray. In addition, the price of this human-powered sprayer is low,
Since many of them are small, they can be sprayed while carrying them on their backs or on their shoulders, so they are highly mobile, and can be sprayed even in narrow places such as gardens and greenhouses.

[0005]

However, the power sprayer has a large scale, and there are serious problems in terms of maneuverability and price, and the places where it can be sprayed are limited.

Further, in the manual sprayer, it is necessary to manually increase the air pressure in the chemical liquid tank every time the internal pressure in the chemical liquid tank decreases. Further, there is a limit to the pressurization, the time during which one spray is possible is short, a considerable number of forward and backward movements by the piston are required, and the work efficiency is poor. Further, in the manual sprayer, since the piston and the like are provided in the chemical liquid tank, malfunctions such as air leakage due to abrasion are likely to occur frequently.

The object of the present invention is to solve the above problems,
It is to provide a portable sprayer that is small, inexpensive, and has good work efficiency.

[0008]

The present invention according to claim 1 for achieving the above object comprises a chemical liquid tank, a chemical liquid injection port provided in the chemical liquid tank for injecting a chemical liquid into the chemical liquid tank, In a portable sprayer having a hose connected to the chemical liquid tank and a nozzle attached to the tip of the hose, the chemical liquid tank is provided with a check valve for injecting air,
A portable spraying machine, characterized in that air is injected into the chemical liquid tank from a compressor or a compression cylinder through the check valve to store the pressure.

The present invention according to claim 2 is the portable sprayer according to claim 1, further comprising a pressure gauge for displaying a pressure in the chemical liquid tank.

The present invention according to claim 3 is the portable sprayer according to claim 1, characterized in that the chemical liquid tank is provided with a safety valve.

The present invention according to claim 4 is characterized in that a backpack belt is attached to the chemical liquid tank.
The portable sprayer described in 1.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail based on the illustrated embodiments. FIG. 1 is an exploded perspective view of a portable sprayer according to the present embodiment, and FIG. 2 is a cross-sectional view of the portable sprayer.
A check valve 2 for introducing air is provided, and a handle 3 for easy carrying is attached around the check valve 2. A chemical liquid inlet 4 for injecting a chemical liquid L such as a disinfectant into the chemical liquid tank 1 is provided on the upper side of the chemical liquid tank 1. A lock lever 7 is attached to the chemical liquid inlet 4 via a strainer 5 and a packing 6. Further, a Bourdon tube type pressure gauge 8 for displaying the pressure in the chemical liquid tank 1 is provided on the upper side of the chemical liquid tank 1, and the pressure in the chemical liquid tank 1 is constant near the check valve 2. A safety valve 9 for venting air when the value is exceeded is attached.

A cock 11 is attached to the lower portion of the chemical liquid tank 1 via a packing 10.
A nozzle 13 with a cock for spraying a drug solution is attached to the nozzle 1 via a flexible hose 12. Further, a back belt 14 is provided on the side surface of the chemical liquid tank 1.

When using this portable sprayer, first, the lock lever 7 is removed, and an appropriate amount of the chemical liquid L is injected into the chemical liquid tank 1 from the chemical liquid injection port 4. Then, the lock lever 7 is fixed and the chemical liquid inlet 4 is sealed.

Next, as shown in FIG. 3, an air pressure tank of a compressor 22 is connected to the check valve 2 through a pipe 21, air is injected from the air pressure tank into the chemical liquid tank 1, and the pressure gauge 8 is visually checked. Meanwhile, air is injected until a predetermined pressure is reached.

In the present embodiment, the pressure setting of the safety valve 9 is set to, for example, about 7 kg / cm ² , and the safety valve 9 is activated when the pressure exceeds this value. Therefore, by utilizing the function of the safety valve 9, the hose 21 is removed from the check valve 2 when the air is sufficiently stored in the chemical liquid tank 1 while being left standing until it is stored in a predetermined pressure. In this case, since the check valve 2 is used, air does not flow back out of the chemical liquid tank 1.

When spraying, the user carries the back belt 1
4, the chemical solution tank 1 is carried on the back, the cock 11 is opened, and the cock of the nozzle 13 is further opened, whereby the chemical solution L can be sprayed through the hose 12 and the nozzle 13 by the pressure in the chemical solution tank 1. This spraying can be continued until the chemical liquid L is exhausted or the air pressure in the chemical liquid tank 1 is reduced.

In the conventional human-powered spraying machine, pumping was required by human power each time the pressure in the tank was lowered or the chemical solution was injected, but the portable spraying machine in the present embodiment is required. In the above, it suffices to connect the compressor 22 to the check valve 2 and, for example, switch on the compressor 22.

Although the compressor 22 is used in this embodiment, a compression cylinder or a bicycle inflator may be used instead of the compressor 22.

Since the handle 3 is attached so as to cover the check valve 2 and the safety valve 9, the check valve 2 and the safety valve 9 also have a role of protecting the check valve 2 and the safety valve 9 from an impact when the chemical liquid tank 1 falls.

[0021]

As described above, the portable sprayer according to the present invention does not require manual pumping or the like to pressurize the air in the chemical liquid tank, and can easily spray the chemical liquid. Further, during the spraying work, since the spraying is carried out by the pressure stored in the chemical liquid tank, there is little noise and the work is easy.

Further, since no pump, piston or the like is attached, there is an advantage that it is light in weight, easy to work and hard to break down.

[Brief description of drawings]

FIG. 1 is an exploded perspective view.

FIG. 2 is a sectional view.

FIG. 3 is an explanatory diagram of a state in which a compressor is connected.

[Explanation of symbols]

1 chemical tank 2 Check valve 3 handles 4 Chemical injection port 7 Lock lever 8 pressure gauge 9 Safety valve 11 cooks 12 hoses 13 nozzles 14 shoulder belt 22 Compressor L chemical

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 2B121 AA11 CB06 CB21 CB28 CB53                       CB55 CB65 CC02 CC31 EA26                       FA02                 4F033 QA05 QB02Y QB03X QB12Y                       QB17 QD03 QE02 QE15 QE19                       QE21 QF02Y

Claims (4)

[Claims] 1. A chemical solution tank, a chemical solution injection port provided in the chemical solution tank for injecting a chemical solution into the chemical solution tank, a hose connected to the chemical solution tank, and a nozzle attached to a tip of the hose. In the portable sprayer, the chemical liquid tank is provided with a check valve for injecting air, and air is injected into the chemical liquid tank from a compressor or a compression cylinder via the check valve to store the pressure. Portable sprayer. 2. The portable sprayer according to claim 1, further comprising a pressure gauge for displaying a pressure in the chemical liquid tank. 3. The portable sprayer according to claim 1, wherein the chemical liquid tank is provided with a safety valve. 4. The portable sprayer according to claim 1, wherein a back belt is attached to the chemical solution tank.