JPS6048159A - Device for spraying chemical liquid - Google Patents

Abstract

PURPOSE:To provide a spraying device which forms fine and uniform particles, is safe, reduces manpower and is effective by blowing the mist generated from a two-fluid nozzle from below by means of a fan. CONSTITUTION:An axial flow fan 12 is installed on a frame bar 11 fixed with a two-fluid nozzle 10 on a stanchion 9 erected on a carriage 2 on both sides of the carriage 2. The mist generated from the nozzle 10 in such a way is blown upward by means of a fan from below to expand the effective spray area of the mist and to prevent the collision and recombination of the sprayed particles against and with each other. Since the particles are finely and uniformly sprayed, the chemical spraying is safely and effectively accomplished with reduced manpower.

Description

[Detailed description of the invention] The present invention relates to a chemical liquid spraying device.

In recent years, greenhouse horticulture has become larger and more concentrated, and the crops themselves have weaker resistance in closed, densely planted cultivation environments in greenhouses, and pest control has become more important than in open field cultivation, and pest control has become extremely frequent. It has become.

Pest control work in such sealed greenhouses is unmanned because the workers themselves are exposed to pesticides, and pest control techniques such as the fuming method, transpiration method, and combustion haze method have been developed; There are drawbacks such as the decomposition of ingredients and the need for special formulations, and there are restrictions on the pesticides that can be used.Also, uneven scattering tends to occur on both sides and behind the spraying device, so it is safer and easier to operate. A chemical spraying device that can perform simple and efficient pest control work is being developed.

The present invention has been developed to meet such demands, and to provide a two-fluid nozzle that generates a fine spray of a chemical liquid using compressed air and a chemical liquid in order to disperse the chemical liquid to every nook and cranny of a house etc. by spraying a small amount, especially in the field of liquid medicine. The purpose of the present invention is to provide a chemical spraying device that is safe and suitable for pest control work with high spraying efficiency, by establishing a specific relationship with a fan that diffuses the chemical.

That is, the configuration of the present invention is characterized by comprising a two-fluid nozzle that generates spray using compressed air and a chemical solution, and a fan that blows up the spray from below to increase the effective spray area.

The configuration of the present invention will be explained below according to the embodiments shown in the drawings.

This embodiment uses a small rotary compressor 1 and is a small, lightweight, and easy-to-carry and operate chemical liquid spraying device. As shown in FIG. 1, the compressor 1 and a chemical liquid tank 3 are arranged side by side on a cart 2. The compressor 1 receives the rotation of a motor 4 through a V-belt 5, sucks air through an air cleaner 6, and transfers the compressed air to an air hose 7.
lead to. The chemical tank 3 also has a chemical hose 8 , and the air hose 7 and the chemical hose 8 are connected to a two-fluid nozzle 10 on a support 9 erected on the cart 2 . The two-fluid nozzle 10 uses compressed air and a chemical to generate a spray consisting of fine chemical particles. In this example, 500 to 800 A/min
The air is turned into a vortex at a speed of 200 m/sec, and the chemical solution is made into ultra-fine particles, producing a large amount of uniform and fine mist.

Furthermore, it is fixed on both sides of the trolley 2! An axial fan 12 is installed on the ζ frame rod 11. In Fig. 1, the two-fluid nozzle 10 and the axial fan 12 are shown at almost the same height, but the actual height of the nozzle is approximately 2 m above the ground, and that of the fan is approximately 1 m above the ground.
m, but the height of these relationships can be adjusted freely by expansion and contraction using the screw 13.

The two-fluid nozzle 10 and fan 12 are also connected to the handle 14.
15, the angle of the spraying direction and the blowing direction can be changed.

On the other hand, when the above-mentioned chemical spraying device is used in the spraying chamber of a triple house, the relationship between the house shape and the fan angle is as shown in Table 1. However, L is the vertical dimension of the house, W is the horizontal dimension, the height is 4II1, and the fan angle α is an upward angle with respect to the horizontal. Also, the medicine 'a 11115 device is installed on the gable wall near the frontage and sprayed in the direction of the ridge of the house.

Figure 3 shows the installed state of the chemical spraying device at that time, and Figure 4
The figure is a perspective view of a triple house with a maximum effective spray area of 165
0m 2 (L<60m, 30+Il<W<40m
). The specifications of the two-fluid nozzle 10 in this case are: air pressure 0, 45 kg/co+2, chemical liquid 11. L output 1
(, tlJ'71'1100cc/min, air 18
0 (N!/min, spread (nozzle tip 5n+) diameter 2I
Il, average particle diameter (nozzle tip 11Il) is 20 to 30 μm.

In this way, the two-fluid nozzle 10 and the fan 12 are
The reason why sprayed mist can be spread uniformly by using II''IJ can be explained as follows.The conventional type in which the two-fluid nozzle is integrally arranged on the lee side of the center of the fan,
When the greenhouse is deep (generally 40 m or more), the sprayed mist tends to concentrate toward the back and become particularly thin behind and on both sides of the nozzle. However, if the nozzle and fan are provided separately and the fan has an angle (elevation angle) as in the present invention, the mist will flow behind and on both sides of the spraying device.
Experiments have shown that the larger the angle, the more mist will circulate.

Therefore, in a shallow house, it is desirable to increase the angle of the fan to allow more mist to circulate behind and to the sides, and in a deep house, it is desirable to reduce the fan angle to allow the fog to reach the back. .

Next, we will show the results of an experiment in which the vertical dimensions of the house shown in FIGS. 3 and 4 were changed, the lateral dimension W, the height N was changed, and the fan angle α was changed. In addition, since it is possible to spray without a fan if the vertical dimension of the greenhouse is 25 m or less, experiments were conducted using greenhouses with a length of 30 m to 50 m. The height of the house is usually the height of a line, but if there are double or triple curtains, the height of the curtain should be as low as possible, and the nozzle should be horizontal.

Table 2 (H=2.5m > Table 3 (1-1=3.0m) Table 4 (1-j=3.5m) Table 5 (1-1=4.0m) Table 6 ( H=4.511) Table 7 (H=5.0m) Also, when spraying only with a nozzle, a lump of mist forms at a certain point in front of the nozzle, and furthermore, it collides and recombines to form coarse particles, which causes chemical damage. However, it has been found that when a fan blows air onto the area where the fog is clustered, it not only scatters the fog, but also prevents particles from colliding and recombining, thereby dispersing fine, uniform particles throughout the greenhouse.

Furthermore, in the chemical spraying device according to the present invention, since the fan is placed below the nozzle, it is only necessary to move the lightweight nozzle up and down for adjustment, and there is no need to move the heavy fan up and down.
Maintenance of the fan is also easy.

The fan set angle should be set slightly upward so that the air blowing intersects with the mist sprayed from the nozzle about 1/3 of the way to the back of the house.

As described above, according to the configuration of the present invention, the spray generated from the two-fluid nozzle is blown up from below by a fan to expand the effective spray area, and the spray particles are prevented from colliding and recombining with each other to form fine, uniform particles. This enables safe, labor-saving, and effective control of pests and diseases, and provides a chemical solution spraying device that is simple in structure, easy to operate, inexpensive, and highly suitable for mass production.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of the chemical spraying device, FIG. 2 is a plan view thereof, and FIG. 3 is a schematic diagram of the chemical spraying device without showing the installed state. FIG. 4 is a perspective view of the triple house. 10... Two-fluid nozzle, 12... Axial flow fan, α... Fan angle. Agent Asa Akira

Claims (5)

[Claims] (1) A chemical solution spraying device comprising: a two-fluid nozzle that generates a spray using compressed air and a chemical solution; and a fan that blows up the spray from below to increase the effective spray area of the spray. (2) The chemical liquid spraying device according to claim 1, wherein the spraying direction of the nozzle and the blowing direction of the fan intersect. (3) The chemical liquid dispersion device according to claim 2, wherein the air blowing direction of the fan is directed upward within a range of about 10 degrees to about 25 degrees with respect to the horizontal. (4) The installation height of the nozzle is approximately 2IIl from the ground.
Claims 1 to 3, characterized in that the spray direction is about 10 degrees to about 20 degrees upward from the horizontal, and the installation height of the fan is about 1 m above the ground. Chemical spraying device. (5) The intersection of the spraying direction of the nozzle and the blowing direction of the fan is approximately 1 of the length from the nozzle to the back of the spraying chamber.
4. A chemical liquid dispersion device according to any one of claims 1 to 4, characterized in that the chemical liquid dispersion device is located at a position of 1/3.