JPS6238760Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sprayer that disperses a chemical solution into ultra-fine atomization similar to a mist.

In order to control pests and diseases of agricultural crops, it is common to use power sprayers or mist machines to atomize and spray chemical solutions into atomized mist, but the spray particles have a large particle size, making it difficult to spread unevenly. To prevent this, it was necessary to spray a large amount of chemical solution. Therefore, a sprayer (device) has been developed that makes the particles of the chemical solution much finer than those sprayed by a power sprayer or a mist machine, and disperses the particles in ultra-fine atomization. When a chemical solution is atomized and sprayed, the ultra-fine particles of the chemical solution float in the air, float and adhere to every corner of the crop, and because the particles are extremely fine, they adhere uniformly to the crop. In addition, even after adhesion, the particles do not combine with each other and become large water droplets that fall.
It has been found that extremely high pesticidal effects can be obtained even when sprayed in small amounts.

As a type of ultra-fine mist sprayer (device), a chemical liquid is pressurized and pumped using a high-compression liquid pump, and then sprayed at high pressure from a nozzle body, and the sprayed chemical liquid is blown by wind generated by a blower. There is also a structure that is a combination of a power sprayer and a mist machine that produces ultra-fine atomization. And mainly vinyl houses,
This sprayer (device), which is used in glass greenhouses, etc., has been able to produce ultra-fine atomization as described above, but it has been difficult to achieve ultra-fine atomization that approximates a mist of finer particles. However, the finer the chemical particles, the better, but if they are made into ultra-fine particles, they will float in a high density near the nozzle body, making it difficult to reach the crops, and they are also susceptible to the effects of natural wind, so outdoor cultivation is not recommended. There are various problems that need to be improved, including problems with application to crops.

Therefore, the present invention uses a small-volume, high-pressure diaphragm compressor to use high-pressure air to atomize the chemical liquid into an ultra-fine atomization close to a mist, and then disperses this ultra-fine atomized chemical liquid on the wind generated by a turbo blower. By doing so, this ultra-fine mist sprayer has good reachability and can be applied to crops grown in open fields, and the diaphragm chamber of the compressor is opened in communication with the swirl chamber of the blower to cool the heat generating part. This is what we are trying to provide.

The present invention will now be described with reference to the illustrated embodiments.

In Fig. 1, reference numeral 1 denotes a backpack-type frame made of metal pipe material, which includes a horizontal bottom frame 1a, an upright frame 1b bent upward from the front end of the bottom frame 1a at a nearly right angle, and an upright frame 1b. An intermediate frame 1 extends rearward from an intermediate position of the frame 1b in parallel with the bottom frame 1a.
It has c. A back support 2 is attached to the front side of the upright frame 1b, and upper and lower ends of backpack bands 3 are attached to the upper and lower parts of the upright frame 1b. A chemical liquid tank 4 for storing a chemical liquid is mounted on the intermediate frame 1c, and this tank 4 has a lid 4a and a discharge port 4b.
Equipped with: A small engine 6 is attached to the bottom frame 1a located below the chemical tank 4 via a vibration isolator 5, and its fuel tank 6b is supported by the rear end of the intermediate frame 1c. In addition, the bottom frame 1
A is provided with a speed reducer a, a high-volume, low-pressure turbo blower b, and a low-volume, high-pressure diaphragm compressor c, along with the engine 6.

As shown in FIG. 2, the speed reducer a has a gear case 20 fixed to the outside of the output shaft 6a of the engine 6 via a positioning plate 10. The output shaft 6a of the engine is inserted into the gear case 20 and supported therein. A small gear 21 is provided at the end of the output shaft 6a.
is fixed, and this small gear 21 is connected to the output shaft 6a.
It meshes with a large gear 23 fixed to an operating shaft 22 which is supported in a gear case 20 in parallel with the gear case 20. The case 31 sides of blower cases 30 and 31 are fixed to the front side of the gear case 20, and the blower case 30 has an intake port 30a, and the blower case 31 has a compressor case portion 31a, a crank case portion 31a ₁ , and a diaphragm. A case portion _31a2 is formed. The operating shaft 22 is connected to the compressor case portion 3.
1a, and an intake port 30a at the tip thereof.
The impeller 32 of the blower is fixed at a position facing the. This impeller 32 includes a boss portion 32a, blades 3
2b, a swirl chamber 33 is provided on the outer periphery of the blower case 31 to constitute a turbo blower b. The spiral chamber 33 is opened to communicate with the diaphragm chamber of the compressor c. The impeller 32
An eccentric cam 42 is attached to the operating shaft 22 together with a cylinder 41 in the crank chamber 40 at the back of the engine. supported. The diaphragm case portion 31
The upper side of _a2 is covered with a diaphragm chamber lid 44, in which a diaphragm chamber 45 is formed, and the diaphragm chamber lid 44 is provided with a discharge port 44a.
A diaphragm 46 is stretched in the diaphragm chamber 45, and a piston plate 47 is attached to the upper surface of the diaphragm 46. Further, the connecting rod 4 is attached to the lower surface of the diaphragm 46.
No. 3 piston portions 43b are connected. A suction hole 48 is formed vertically through the piston plate 47, diaphragm 46, and piston portion 43b.
A reed valve 49 is provided above this suction hole 48 . A valve seat plate 50 is fixed in the diaphragm chamber 45 above the diaphragm 46, and a discharge hole 50a is bored in the valve seat plate 50.
A reed valve 51 is provided in the discharge hole 50a.

In this way, the diaphragm chamber portion includes the diaphragm case portion 31a ₂ and the diaphragm chamber lid 44.
It consists of each member provided in a diaphragm chamber 45 formed by.

A first air outlet (not shown) of the blower b has a first air outlet.
As shown in the figure, a bent pipe 60 is connected for communication, and a straight pipe 62 is connected to this bent pipe 60 via a flexible pipe 61. This straight pipe 62 has a base pipe 62a and a tip pipe 62.
b, and a spray body d is attached to the tip of the tip tube 62b. The spray body d has a tube body d1 and a nozzle body d2, as shown in detail in FIGS. 3 and 4. The tube body d1 is the tip tube 6
The base portion is connected to 2b, and the tip is open, and an air guide tube 70 protruding into the tube body d1 from the side of the intermediate portion is integrally connected to the tube body d1. The air guide tube 70 is bent at a substantially right angle, and its tip faces approximately the center of the tip of the tube body d1.
2 is screwed on. The base of the air guide pipe 70 is connected to the other end of a pipe 63 whose one end is connected to the discharge port 44a of the compressor c.

The nozzle body d2 includes an adapter 80 whose base end is screwed onto the tip of the air guide tube 70, and this adapter 80.
It consists of an L-shaped joint 81 whose tip is screwed into the side surface of the nozzle, and a nozzle body 82 which is screwed onto the tip of the adapter 80. The adapter 80 includes an air supply path 80a that communicates with the air guide pipe 70, and an air supply path 80a that communicates with the air guide pipe 70, and
A liquid supply path 80b communicating with the mold joint 81 and a liquid supply path 8
An annular U-shaped groove 80c is provided at the tip of 0b. The base of the L-shaped joint 81 is connected to the other end of a hose 64 whose one end is connected to the discharge port 4b of the chemical tank 4, and a pot 65 is provided at the base end of the hose 64. Further, the nozzle main body 82 has a pair of arm portions 82a branched from the central portion and cylindrical portions 82b, 82b provided opposite to each other at the tips of both arm portions 82a.
a has one end communicating with the air supply path 80a,
Air guide path 82c whose other end opens toward the cylindrical portion 82b
and a liquid guide path 82d whose one end communicates with the liquid supply path 80b and whose other end opens toward the cylindrical portion 82b. Further, a nozzle tip 83 is fitted on the front end side of the cylindrical portion 82b, and a plug 85 is fitted on the rear end side with a packing 84 interposed therebetween. The nozzle tip 83 has a gap 83a communicating with the air guide path 82c.
A communication hole 83b that communicates with this gap 83a and extends toward the distal end side and communicates with a sharpened hole 82e formed at the distal end of the cylindrical portion 82b, and a center hole that communicates with the liquid guide path 82d via the plug 85. 83c and a radiation hole 83d. Further, the plug 85 has a gap 85a communicating with the liquid guide path 82d, and a gap 85a that communicates with the liquid guide path 82d.
5a and extends in the axial direction, and a central hole 85d extends in the axial direction of the cylindrical portion 82b at the axial center and communicates with the central hole 85b.
It has a center hole 85c communicating with c, and is screwed into the cylindrical portion 82b, and an O-ring 86 prevents liquid from leaking to the rear. And cylindrical parts 82b, 82
Opposing injection holes 82f, 82f formed in annular shapes at both ends of b intersect at a focal point 82g.

The sprayer configured in this way has a chemical solution tank 4.
Put the chemical into the engine 6, start the engine 6, and reduce the speed reducer a.
The blower b and compressor c are driven through the operator, and the operator carries the operator on his or her back using the backpack band 3, rotates the handle 65 to the conductive side, and holds the straight pipe 62 at any position for use. Then, in the blower b, outside air is sucked into the blower cases 30 and 31 from the air intake port 30a by the rotation of the impeller 32, and from the swirl chamber 33 passes through the air outlet into the curved pipe 60, the straight pipe 62, and the pipe body d1. sent,
A mist-like ultra-fine mist is discharged from the tip of the pipe body d1 and injected from the nozzle body d2 by a low-pressure, large-capacity wind force, and is attached to the crops. In the compressor c, the connecting rod 43 reciprocates via the eccentric cam 42 rotated by the decelerated operating shaft 22 to move the diaphragm 46 up and down, and the impeller 32 of the blower b moves the connecting rod 43 into the vortex chamber 33. The introduced air is sucked through the suction hole 48 and compressed by opening and closing the reed valve 49, and the compressed high-pressure, small-volume air is led out to the pipe 63 from the discharge port 44a through the discharge hole 50a and the reed valve 51.

Inside the diaphragm chamber 45, the diaphragm 4
Pressurizing the air during the reciprocating motion of the blower 6 generates heat, but since the diaphragm chamber 45 is constantly exposed to fresh air introduced into the swirl chamber 33 of the blower b, the diaphragm chamber portion is cooled. The temperature will not rise excessively.

The compressed air brought from the pipe 63 to the air guide pipe 70 is transferred from the air supply path 80a of the spray body d to the air guide path 82c.
→The air is injected to the outside through the gap 83a→the communication hole 83b→the sharp hole 82e→the injection hole 82f. On the other hand, the chemical liquid brought from the chemical liquid tank 4 to the liquid supply path 80b via the hose 64 and the L-shaped joint 81 is transferred to the liquid guide path 80b.
d → Gap 85a → Aggregate hole 85b → Center hole 85c
→ Center hole 83c → Injection hole 82 via radiation hole 83d
The particles are sucked out by the negative pressure generated near the outlet of the high-pressure air injected from f, and are subjected to the shearing action of the compressed air, so that they become quite small particles and are injected to the outside. Injection hole 82f,
The bar stream of chemical droplets injected from 82f collides at the focal point 82g in FIG. 3. This focal point 82
In g, the chemical liquid particles are further divided by the collision of the fine particles of the chemical liquid with each other and the shearing action of the air caused by the collision of the compressed air, and are emitted forward as a mist-like ultra-fine mist. It is dispersed by wind power from

Therefore, the sprayer of the present invention can be used not only in greenhouses but also for crops grown outdoors.

As explained above, the ultra-fine mist spreader of the present invention includes a prime mover, a diaphragm compressor and a turbo blower driven by the prime mover, and a chemical tank containing a chemical solution, and the turbo blower A nozzle body is installed at the other end of the pipe whose one end is connected to the discharge port of the diaphragm compressor, and the other end of the pipe is connected to the nozzle body, and the other end of the pipe whose one end is connected to the discharge port of the diaphragm compressor, and the chemical tank are connected to the nozzle body. One end of the hose is connected to the other end of the hose, and the diaphragm chamber of the diaphragm compressor is opened to communicate with the swirl chamber of the turbo blower, which eliminates mist that cannot be obtained with conventional spreaders. It is possible to generate chemical particles in the form of ultra-fine mist, which allows the chemical particles to spread to every corner of the crop, and has good spreading properties.Also, since the particles are extremely fine, the particles bond with each other after adhering to the crop. It does not drip as drops,
The pest control effect will be good. In addition, since it is sprayed by the wind power of a blower, it has good directionality and reach, and can be used not only in greenhouses but also for crops grown outdoors, making it versatile. Furthermore, since the diaphragm chamber portion of the compressor is constantly cooled by a large amount of air introduced into the swirl chamber of the blower, deterioration of the diaphragm etc. is prevented and durability is increased.

In the above embodiment, the present invention is applied to a backpack-type spreader, but it goes without saying that this may be a stationary type or a vehicle-mounted type.

[Brief explanation of the drawing]

Fig. 1 is an overall side view of a backpack-type ultra-fine sprayer showing an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the main parts, Fig. 3 is an enlarged sectional view of the spray body, and Fig. 4 is an enlarged sectional view of the main parts. It is an enlarged sectional view of a nozzle body. 4... Chemical tank, 6... Engine, b... Blower, 33... Volute chamber, c... Compressor, 44a...
...discharge port, 45 ... diaphragm chamber, 60 ... curved pipe, 61 ... flexible pipe, 62 ... straight pipe, 63 ... pipe, 64 ... hose, d ... spray body, d ₁ ... pipe body, d ₂ ... nozzle body.

Claims (1)

[Scope of utility model registration request] It is equipped with a prime mover, a diaphragm type compressor and a turbo type blower driven by the prime mover, and a chemical liquid tank for storing a chemical liquid, and a nozzle is attached to the other end of the pipe body, one end of which is connected in communication with the air outlet of the turbo type blower. The other end of a pipe, one end of which is connected to the discharge port of the diaphragm compressor, and the other end of a hose, one end of which is connected to the chemical tank, are connected to the nozzle body, respectively. The diaphragm chamber of the diaphragm compressor is opened to communicate with the volute chamber of the turbo blower, and the air flow pressurized by the turbo blower and flowing through the volute chamber comes into contact with the diaphragm chamber of the diaphragm compressor to cool it. An ultra-fine mist spreader configured as follows.