JPH0351003Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to an improvement of a chemical liquid tank stirring device for a sprayer that sprays a chemical liquid while traveling.

[Conventional technology]

Generally, this type of sprayer has a structure in which a chemical tank is mounted on or towed by a traveling body such as a tractor, and the chemical liquid is sprayed onto crops using other devices such as pumps and spray nozzles while the vehicle is traveling. In this case, a stirring means is required to properly use the chemical liquid in the chemical liquid tank, so in the past, as shown in FIG. The stirring blade b was driven via power transmission means such as a transmission shaft e, a chain f, and a belt g connected to a power output shaft d of a tractor c.

[The problem that the idea aims to solve]

Therefore, there were the following drawbacks. That is, the power transmission part of the stirring device was exposed outside the chemical tank, which was dangerous, and it was necessary to cover it with a safety cover or the like.

The structure of the power transmission part of the stirring device is complex, and it takes time to assemble and requires skill.

When a tank is used as part of a boom sprayer, it is supported by a frame, but it is difficult to center the pulleys and sprockets on which the belt and chain are stretched.

Since the stirring blade is attached to the side wall, part of the blade is exposed from the liquid surface early, which causes foaming when the agent contains a spreading agent, and a large amount of air gets mixed into the pump. , the amount of liquid sent becomes unstable, which interferes with uniform chemical dispersion.

When a chemical tank is attached to the rear of a tractor, the PTO shaft output is often used as a drive source for stirring, which limits the design space for a stirring power transmission device.

When a chemical solution tank is attached to the rear of a tractor, the PTO shaft output is often used as a drive source for stirring, and connecting the extraction shaft to the PTO shaft output is troublesome and dangerous.

The stirring power transmission device was making a lot of noise, causing workers to lose their concentration and increasing their fatigue.

In a boom sprayer with a tank attached to the rear of the tractor, in order to deal with the inability to steer due to the heavy weight of the stirring power transmission device at the bottom of the tank, the front wheels of the tractor lift up.
It is necessary to attach weights to the front of the tractor, which increases the overall weight, which causes problems when compacting fields and fields.

In boom sprayers, etc., there is a power transmission device that requires a large space at the bottom of the tank, so it needs to be mounted in a high position, which raises the center of gravity, raising the risk of falling during work, and obstructing rear visibility. and become an obstacle to safe work.

[Means to solve the problem]

This invention was made with the intention of solving the above problem, and in a sprayer that sprays a chemical solution in a chemical tank mounted on or towed by a traveling aircraft onto crops, etc., the bottom of the chemical tank The present invention proposes a chemical liquid tank stirring device for a sprayer, in which a chemical liquid stirring blade is rotatably vertically installed, and a drive motor disposed at the lower part of the chemical liquid tank is directly connected to the blade.

[Effect]

In the above-mentioned device of this invention, the stirring blade, which is rotatably installed vertically at the bottom of the chemical solution tank, is directly connected to the moving motor, simplifying the structure and making the whole compact, improving the stirring performance, and by extension the dispersion. This is designed to improve work efficiency.

〔Example〕

An embodiment of this invention will be described below with reference to FIGS. 1 and 2.

In the figure, reference numeral 1 denotes a chemical liquid tank, and a stirring blade 2 for stirring the chemical liquid is hung vertically rotatably in the substantially center of the bottom portion 1a of the chemical liquid tank 1. In this case, as shown in FIG. 2, the mounting seat 5 is bolted to the metal female screw 3 molded on the bottom 1a of the chemical liquid tank 1 made of FRP via the packing 4, and the bearing of the mounting seat 5 is The stirring blade 2 is connected via a key 8 to the upper end of the stirring shaft 7 which is rotatably supported by a ball bearing 6 in the portion 5a, and the drive shaft of the drive motor 9 is mounted on the lower surface of the mounting seat 5. 10 and the stirring shaft 7, the power from the drive motor 9 can be directly transmitted to the stirring blades 2.

The connection between the stirring shaft 7 and the drive motor 9 is as follows.
An axial protrusion 10 formed at the tip of the drive shaft 10
Step a is carried out by fitting into the axial recess 7a formed at the connecting end of the stirring shaft 7.

[Effect of idea]

As explained above, according to the chemical tank stirring device of this invention, the stirring blades vertically installed at the bottom of the chemical tank are directly connected to the drive motor installed at the bottom of the tank, which limits the sprayer. In addition to making effective use of the space provided, the structure can be simplified and the whole can be made more compact. It is also easy to assemble and disassemble, and since no rotating parts are exposed outside the chemical tank, it is safe. Since the blade is located at the bottom of the chemical tank, it is possible to stir even a small amount of chemical liquid, which enables proper spraying of the chemical and improves the efficiency of the spraying operation.
Its utility value is remarkable.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view showing a stirring device of this invention, FIG. 2 is an enlarged view of a portion of FIG. 1, and FIG. 3 is a partially sectional side view showing a conventional chemical liquid tank stirring device. In the figure, 1...chemical tank, 1a...bottom of chemical tank 1, 2...stirring blade, 7...stirring shaft, 9...drive motor, 10...drive shaft.

Claims (1)

[Scope of utility model registration request] In a sprayer that sprays a chemical liquid in a chemical liquid tank mounted on or towed by a traveling aircraft onto crops, etc. while traveling, a chemical liquid stirring blade is rotatably installed vertically at the bottom of the chemical liquid tank, and the chemical liquid is sprayed onto this blade. A sprayer chemical liquid tank agitation device that is directly connected to a drive motor located at the bottom of the tank.