JPH1033106A - Portable liquid chemical spraying machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spraying machine enabling the application of liquid chemical to the top and back surfaces of a leaf of a crop at the same time. SOLUTION: A transmission shaft sheath pipe 12 having a prescribed length is provided with a driving part 11 at an end and a fan 16 driven by the driving part 11 and a fixed nozzle 17 connected to a chemical source through a hose 33 at the other end of the pipe. A handle 14 for gripping by both hands and a shoulder belt 13 are bonded to the machine at a part near the driving part 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable chemical liquid sprayer having a fan and a nozzle provided at one end of a transmission shaft-sheath tube and having a handle and an engine at the other end, which can be operated by hand.

[0002]

2. Description of the Related Art Generally, pesticides are sprayed for controlling pests and insects on agricultural crops, and a spraying machine is used for spraying pesticides. Various types of sprayers are provided, and most of them are of a type in which a chemical solution is ejected from a nozzle in a mist state. In order to discharge the chemical liquid from the nozzle, a power source is required to compress the chemical liquid and supply it to the nozzle, but this power source is from a manual power of a hand pump to a pump driven by an electric motor Alternatively, there is a type in which a pump mounted on a vehicle is driven by an engine. Also,
The nozzle that ejects the chemical solution usually forms a grip at one end of a metal tube of a predetermined length held by hand, connects a rubber hose, connects the nozzle to the other end, and slightly bends the vicinity of the nozzle to eject the nozzle. Is easily determined. The rubber hose is connected to a pump for compressing and supplying a chemical solution. The pump may be a portable type that is carried or carried by a spraying operator or a fixed type that is fixedly installed at a predetermined place using a long hose.

[0003]

However, according to the conventional spraying machine, the chemical sprayed from the nozzle is often sprayed on the leaf surface of the crop.
The chemical must be ejected by positioning the nozzle behind the leaf. That is, as shown in FIG. 5 (A), when the nozzle 2 at the other end of the tube 1 having one end is pointed at the crop, the nozzle 2 squirts a chemical solution facing the front of the leaf 3 of the crop. Therefore, it is often impossible to spray a chemical solution on the back of the leaves. Therefore, in order to spray a chemical solution on the back of the leaf, it is necessary to use the method shown in FIG.
(B) As shown in FIG.
5C, the chemical is ejected from the lower side of the leaf 3 or, as shown in FIG. 5C, the chemical is ejected from the reverse direction of FIG. Was needed.

[0004] Therefore, the operation of spraying a chemical solution on a crop requires two stages of spraying work, which are divided into the front and back of the leaf of the crop, resulting in an inconvenience that the work time becomes longer and the human body suffers more pesticide damage. there were.

Accordingly, the present invention provides a portable chemical sprayer capable of spraying a chemical solution simultaneously on the front and back of the leaf of a crop.

[0006]

SUMMARY OF THE INVENTION A portable chemical sprayer according to the present invention comprises a fan having a drive shaft at one end of a transmission shaft-sheath tube having a predetermined length, and a drive fluid at the other end driven by the drive unit. The nozzle fixed to the supply source and the hose is fixedly provided,
A handle and a shoulder belt gripped by both hands near the driving unit are combined. And
The transmission shaft-sheath tube is capable of extending and contracting in the axial direction, and the transmission shaft penetrating the inside of the transmission shaft-sheath tube is capable of being extended and contracted by engaging a spline or a key.

Therefore, when spraying a chemical solution, the leaves of the crop are disturbed and oscillated by the wind generated by the fan, so that the chemical solution sprayed from the nozzle simultaneously adheres to the front and back of the leaves, thereby shortening the time required for spraying. Can be done.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the portable chemical liquid sprayer 10 has a shoulder belt 13 near the drive unit 11 connected to a transmission shaft-sheath tube 12 having a predetermined length in which a drive unit 11 such as an engine is connected to one end. A handle 14 having a substantially U-shape is attached and fixed to the tip of the handle, a grip 15 is attached to both ends of the handle 14, and a fan 16 is attached to the other end.
And an operation section 18 comprising a nozzle 17 is fixedly mounted.

The drive unit 11 is, for example, a combination of a small engine and a transmission shaft that rotates by its driving force, but may be a combination of a small electric motor and a transmission shaft that rotates by its driving force. In the case of an electric motor, a power supply battery is attached, or an electric wire cord is pulled and connected to a commercial power supply.

The transmission shaft-sheath tube 12 is a tube made of metal or the like having a length that does not hinder human operation. In some cases, the inner tube and the outer tube are fitted in the axial direction. It is also possible to use an inner / outer double tube structure that can be extended and contracted. It is convenient for handling that the tube has a circular cross section, but the present invention is not limited to this, and a polygonal cross section may be used. As will be described later, extendable transmission shafts 27 and 28 for transmitting a driving force pass through the transmission shaft sheath tube 12.

[0011] The shoulder belt 13 is worn on the side of the spraying worker's shoulder and worn sideways, so that the driving unit 11 and the operating unit 1 are attached.
The weight 8 supports the transmission shaft-sheath tube 12 and serves as a fulcrum for swinging the transmission shaft-sheath tube 12 by holding the handle 14 with both hands. Therefore, the shoulder strap 13
A rotatable hook is used for the connection between the transmission shaft-sheath tube 12 and the transmission shaft-sheath tube 12.

The handle 14 intersects the transmission shaft-sheath tube 12 and is fixed to a predetermined portion with an appropriate bracket 19, and the grip 15 is set to face upward against the direction of the fan 16. The grip 15 is provided with a stop switch 20 and a throttle lever 21. Throttle lever 21
The wire 22 connected to the wire extends to the drive unit 11 so that the throttle opening of the engine can be adjusted.

A fan 16 is mounted on one end of a shaft 24 rotatably supported orthogonally to a cylindrical body 23 fitted on the end of the transmission shaft-sheath tube 12, and a protective umbrella covering the fan 16. 25 is the transmission shaft-sheath tube 12 through a plurality of support rods 26.
Attached and fixed. The fan 16 is substantially the same as that used in a household fan.

A transmission shaft for rotationally driving the fan 16 is housed in the transmission shaft sheath tube 12, which is, as shown in FIG.
A transmission shaft 28 is engaged with the transmission shaft 27 so as to be able to expand and contract and transmit torque by means of a spline or a key.
They are connected to the shaft 24 via 9, 30 respectively. Therefore, the transmission shafts 27 and 28 can also expand and contract in accordance with expansion and contraction adjustment of the transmission shaft sheath tube 12.

The nozzle 17 may be a well-known nozzle required for spraying a chemical solution. The nozzle 17 is fixed to the transmission shaft-sheath tube 12 with a stay 31 so that it can be fixed to a substantially central portion of the protective umbrella 25. 32 is connected to one end. Alternatively, as shown in FIG. 3, the stay 32 may be omitted by attaching the tube 32 to the protective umbrella 25 with an appropriate metal fitting.
The nozzle 17 can be replaced depending on the type of the chemical solution and whether it is a mist jet or a jet jet. A rubber hose 33 is connected to the other end of the tube 32, and the rubber hose 33 is supported by the transmission shaft-sheath tube 12 with a ring 34, extends for a predetermined length, and is connected to a chemical supply source such as a pump (not shown).

Therefore, when spraying the chemical using the portable chemical sprayer 1 having the above-described structure, as shown in FIG. 3, the transmission shaft-sheath tube 12 is suspended from the shoulder belt 13 and the transmission shaft-sheath tube 1 is suspended.
2 so that it can swing freely, or handle 1
When the user grips the grip 15 of 4 and holds the nozzle 17 toward the leaf 36 of the crop 35, the fan 16 faces the leaf 36. Therefore, when the drive unit 11 is started, the fan 16 rotates and the wind swings the leaves 36.

Next, when a chemical solution is ejected from the nozzle 17, as shown in FIG.
The chemical solution is sprayed on the leaves 36, so that the chemical solution adheres to both the front and back of the leaf 36. Therefore, there is no need to turn the nozzle 17 on the back of the leaf to perform the spraying operation, and it is sufficient to perform the spraying operation from the front of the crop 35.

When the chemical solution is sprayed on the leaves of the crop 35 at high places, the workability of the transmission shaft-sheath tube 12 is improved at low and high places by adjusting the expansion and contraction of the transmission shaft-sheath tube 12 in the axial direction. The length can be set to be different from each other, so that an appropriate chemical solution can be sprayed on the front and back of the leaves at low and high places.

[0019]

According to the present invention described above, the chemical can be sprayed from the nozzle while the leaves of the crop are disturbed and oscillated by wind force.
The chemical solution can be easily attached to the front and back of the leaf, so that there is no need for a spraying operation for the purpose of spraying on the back of the leaf. Harmful pesticide damage from work can be avoided.

Furthermore, since the transmission shaft sheath tube and the transmission shaft penetrating therethrough can be adjusted in the axial direction, the length of the transmission shaft sheath tube can be adjusted at low and high places of the crop to be sprayed with the chemical. , The workability is improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional side view of a main part.

FIG. 3 is an explanatory view of a spraying operation.

FIG. 4 is an explanatory diagram of an operation at the time of spraying.

FIGS. 5A, 5B and 5C are explanatory diagrams of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Portable chemical liquid spraying machine 11 ... Drive part 12 ... Transmission shaft-sheath tube 13 ... Shoulder strap 14 ... Handle 16 ... Fan 17 ... Nozzle 27, 28 ... Transmission shaft-sheath tube

Claims (3)

[Claims] A drive unit is fixedly provided at one end of a transmission shaft-sheath tube having a predetermined length, and a fan which is rotationally driven by the drive unit and a nozzle which is connected to a chemical liquid supply source by a hose are fixedly provided at the other end. A portable chemical sprayer, characterized in that: 2. A drive unit is fixedly provided at one end of a transmission shaft-sheath tube having a predetermined length, and a fan which is rotationally driven by the drive unit and a nozzle which is connected to a chemical liquid supply source by a hose are fixedly provided at the other end.
A portable chemical liquid spraying machine comprising a handle and a shoulder belt gripped by both hands near the drive unit. 3. The transmission shaft-sheath tube is extendable and contractable in the axial direction thereof, and the transmission shaft penetrating the inside of the transmission shaft-sheath tube is expandable and contractable by spline or key engagement. 3. The portable chemical sprayer according to 1 or 2.