JPH0446854Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a spray nozzle device for a speed sprayer that can adjust the spray direction of the nozzle.

(Prior Art) In general, a speed sprayer sprays a chemical agent from a number of semicircular spray nozzles provided at appropriate intervals, and also sprays a chemical over a wide area using airflow from moving blades (fans) in a wind tunnel. The drug is distributed radially over the area, for example into the lateral and upper spaces.

The chemical ejected from the spray nozzle is ejected a predetermined distance and then mixes with the chemical ejected from the circumferentially adjacent spray nozzles, thereby uniformly spraying the chemical onto the tree.

However, the drug ejected from the spray nozzle does not mix with the drug ejected from the adjacent spray nozzle near the ejection port. For this reason,
In the case of shrubs or fruit trees grown on trellises such as grapes, the distance from the spray nozzle to the fruit tree is short, making it difficult to spray chemicals evenly and creating blind spots.

Therefore, it is possible to eliminate blind spots by increasing the spray angle of the medicine from the spray nozzle or by increasing the number of nozzles. However, the amount of spray from the spray nozzle decreases, resulting in uneven spraying on fruits hidden behind leaves.

It is also conceivable to increase the number of spray nozzles to eliminate blind spots, but the airflow caused by the fan is blocked by the spray nozzles, leading to a decrease in air volume, and good results cannot be obtained.

Therefore, the purpose of this invention is to provide a spray nozzle device for a speed sprayer that allows the direction of the spray nozzles to be changed without increasing the number of spray nozzles in a conventional speed sprayer. shall be.

(Means for Solving the Problems) The spray nozzle device of the speed sprayer of this invention has the following configuration in order to solve the above problems.

That is, a cylindrical wind tunnel with a fan is provided at the rear of the vehicle body, a discharge port is provided for discharging the air flow generated by the fan in the wind tunnel, a spray pipe is provided facing the discharge port, and a spray pipe is disposed facing the discharge port. In a spray nozzle device for a speed sprayer, a branch pipe is provided which branches off from the wind tunnel and is located across the discharge port of a wind tunnel, and a plurality of nozzles are arranged in this branch pipe. Divide into
The spray pipe and each branch pipe adjacent to each other in the axial direction are connected to each other in a liquid-tight manner so as to be rotatable about each axis and positionable at the rotational position, and each divided branch pipe has at least one It is characterized by the arrangement of two nozzles.

(effect) Next, we will discuss the effect.

The nozzles of each divided branch pipe can be oriented in different directions, and the chemical liquid sprayed from each nozzle of branch pipes adjacent in the circumferential direction of the discharge port can be mixed so that they intersect near each spray nozzle. can.

(Embodiments) Hereinafter, preferred embodiments of this invention will be described in detail based on the accompanying drawings.

FIG. 2 shows a side view of the entire speed sprayer.

A wind tunnel 12 is provided at the rear of the speed sprayer 10, and a chemical tank 14 is provided spaced from the wind tunnel 12. Between them is a discharge port 16 for the air flow from the wind tunnel 12, and this discharge port 16 is provided with guide plates 18, 18, 18 having a three-layer structure. A plurality of arc-shaped spray pipes 20 are arranged on the outer peripheral portions of the guide plates 18, 18, 18, and a branch pipe 22 branching horizontally from the spray pipes 20 is provided with a spray nozzle 24.

FIG. 1 is a partial sectional view of a branch pipe.

An attachment port 20a branches from the spray pipe 20 and stands upright, and a male thread 20b is carved on the circumferential surface. A branch pipe 22 divided into two is provided at the attachment port 20a. Hereinafter, the branch pipes 22a and 22b will be referred to as the branch pipes 22a and 22b from the side closer to the attachment port 20a.

The rear end of the branch pipe 22a enters the attachment port 20a of the spray pipe 20, and the flange portion 23 comes into contact with the distal end surface of the attachment port 20a via the packing material 26 and is fixed with a nut 28. This nut 28 is provided with an engaging portion 28a that protrudes inward in the axial direction at the upper opening thereof, and engages with the flange portion 23 of the branch pipe 22a to fix the branch pipe 22a. In addition, a nozzle 24a is provided at a branched midway portion of the branch pipe 22a.

Further, the tip of the branch pipe 22a is open, and a male threaded portion 22b is carved on the outer peripheral surface. Then, a part of the rear end of another branch pipe 22b enters the tip of the branch pipe 22a, and the flange portion 25 is inserted into the packing material 32.
are in contact through. Furthermore, the nut 28
A nut 34 similar to the above engages with the flange portion 25 and fixes the branch pipe 22b. The tip of the branch pipe 22b is bent approximately vertically, and a nozzle 24b is attached thereto.

Therefore, loosen the nut 34 and remove the branch pipe 22b.
Determine the rotational position (the spray direction of the nozzle 24b),
Tighten nut 34. For this reason, the direction of ejection of the chemical ejected from the plurality of nozzles 24 provided in one branch pipe 22 is not limited to one, and the chemical is uniformly applied even to fruit trees located close to the speed sprayer 10. Can be dispersed.

As mentioned above, with respect to the spray pipe 20, the branch pipe 22
a, 22b are sealed liquid-tightly via nuts 28, 34, packing materials 26, 32, and the like.

FIG. 3 shows a rear view of the speed sprayer 10 in the spraying state. 30 indicates the position of the shelf. The solid line indicates the spray range of the conventional medicine, and the broken line indicates the spray range when the spray direction of the branch pipe 22b is shifted in the direction of the hour hand (rear view).

Further, the rotational position of the entire branch pipe 22 branching from the spray pipe can also be adjusted using the nut 28.

Note that the branch pipe may not only be divided into two as in the above embodiment, but may also be divided into three or more. Furthermore, the method of fixing the branch pipe is not limited to the above embodiment, and it goes without saying that many modifications can be made without departing from the spirit of the invention.

(Effect of the invention) As described above, this invention divides the branch pipe into a plurality of parts in the axial direction, positions at least one nozzle in each divided branch pipe, and at the same time, each divided branch pipe is centered on its axis. Since it is rotatable and can be positioned at the rotational position, compared to the conventional case where multiple nozzles fixed to each branch pipe face in the same direction, the branch pipes adjacent to the circumferential direction of the discharge port The chemical solution sprayed from each nozzle can be mixed so as to intersect in the vicinity of each spray nozzle, eliminating blind spots, and even shrubs or trellis-grown fruit trees can be uniformly and easily treated.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a branch pipe, FIG. 2 is a side view of the speed sprayer, and FIG. 3 is a rear view of the speed sprayer showing the spraying state. 10...Speed sprayer, 12...Wind tunnel, 1
6...Discharge port, 20...Spray pipe, 22, 22a,
22b... Branch pipe, 24a, 24b... Nozzle, 2
8,34...Natsuto.

Claims (1)

[Scope of Claim for Utility Model Registration] A cylindrical wind tunnel with a fan is provided at the rear of the vehicle body, an outlet is provided for discharging the airflow generated by the fan in the wind tunnel, and a spray pipe is provided facing the outlet. At the same time, a branch pipe is provided that branches from this spray pipe and is located across the outlet of the wind tunnel.
In a spray nozzle device for a speed sprayer in which a plurality of nozzles are arranged in this branch pipe, each of the branch pipes is divided into a plurality of parts in the axial direction, and the spray pipe and each branch pipe adjacent in the axial direction are The speed sprayer is connected in a fluid-tight manner so as to be rotatable about each axis at the rotational position and to be positionable at the rotational position, and at least one nozzle is disposed in each of the divided branch pipes. Spray nozzle device.