JP3961202B2 - Chemical tank with stirring impeller - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a chemical liquid tank mounted on a speed sprayer or the like, and more particularly to a chemical liquid tank with a stirring impeller in which a rotating shaft of a stirring impeller is inserted in parallel with the liquid surface.
[0002]
[Prior art]
This type of conventional chemical tank with a stirring impeller has a rectangular parallelepiped shape with a substantially equal cross-sectional area from the bottom to the top, as seen in, for example, Japanese Utility Model Laid-Open No. 2-104870. The mounting surface is attached to a chassis of a speed sprayer.
Moreover, in the said chemical | medical solution tank, if the rotation speed of a stirring impeller is constant, stirring performance will improve, so that the outer diameter is enlarged.
[0003]
[Problems to be solved by the invention]
However, if the outer diameter of the stirring impeller is increased, the time at which the stirring impeller is exposed to the air becomes earlier with respect to the decrease in the level of the stored liquid, in other words, the decrease in the remaining liquid amount, resulting in problems such as foaming. It becomes easy. That is, even when a considerable amount of chemical solution remains in the tank, it is necessary to replenish the chemical solution, and the tank capacity cannot be fully utilized.
Further, in the conventional chemical solution tank, there are many cases where it is difficult to determine where the drain port is provided in what form due to the tank design.
[0004]
The present invention has been made to solve the above-described problems. The object of the present invention is to increase the outer diameter of the stirring impeller as much as possible to improve the stirring performance and to reduce the remaining liquid amount. The time at which the impeller is exposed to the air can be delayed with respect to the decrease in the amount of bubbles, so that problems such as foaming are less likely to occur, the tank capacity can be fully utilized, and the drain port and the like can be disposed rationally and easily. Another object of the present invention is to provide a chemical tank with a stirring impeller.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the chemical solution tank with a stirring impeller according to the present invention basically has a rotating shaft of the stirring impeller inserted in parallel with the liquid surface, and is located below the stirring impeller. The bottom surface portion is disposed at a lower position than the tank mounting bottom surface portion, and a downward projecting concave portion with the bottom surface portion at the bottom of the blade as a lowest position is formed, and a part or all of the stirring impeller is positioned at a lower position than the mounting bottom surface portion. The inclined bottom surface portion is disposed upward from the bottom surface portion of the blade in the direction in which the rotation axis of the stirring impeller extends, and the inclined bottom surface portion is narrowed so that the width is away from the bottom surface portion of the blade, Both the side surface portions located on the left and right sides of the lower wing bottom surface portion and the inclined bottom surface portion of the downward projecting recess are inclined so as to open upward and outward .
[0006]
In another preferred embodiment, the rotation axis of the stirring impeller is disposed at a position lower than the mounting bottom surface portion. More preferably, a drain port is provided in the downward projecting recess. In another preferred aspect, the stored liquid is caused to flow toward the bearing portion side of the rotating shaft by the stirring impeller and is diffused along the side wall portion provided with the bearing portion.
[0007]
In a preferred embodiment of the chemical tank with a stirring impeller according to the present invention configured as described above, the blade bottom surface portion located directly below the stirring impeller is disposed at a position lower than the tank mounting bottom portion, Since the downward projecting recess having the lowest bottom surface portion of the blade is formed, a part or all of the stirring impeller can be put into the downward projecting recess. Or all of them can be arranged at a position lower than the mounting bottom surface.
[0008]
In this case, since the cross sectional area of the downward projecting recess is considerably smaller than the cross area passing through the mounting bottom surface in the chemical tank, the amount of the chemical stored in the downward projecting recess is small.
[0009]
Therefore, the chemical tank with a stirring impeller of the present invention has a conventional rectangular parallelepiped shape having a substantially equal cross-sectional area from the bottom surface to the top, and the entire bottom surface is an attachment surface that can be attached to a chassis of a speed sprayer or the like. In comparison, the outer diameter of the impeller can be increased, the agitating performance can be improved, and the timing at which the impeller is exposed to the air can be delayed with respect to the decrease in the remaining liquid amount. In other words, the tank capacity can be fully utilized, and the drain port can be easily and rationally provided in the downward projecting recess where the remaining liquid is collected.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show an embodiment of a chemical tank with a stirring impeller according to the present invention, FIG. 1 is a rear view, FIG. 2 is a cross-sectional view taken along arrow II-II in FIG. 1, and FIG. FIG. 4 is a partially cutaway perspective view, and FIG. 5 is an enlarged view of the main part of FIG.
[0011]
In the chemical solution tank 10 with the stirring impeller of the illustrated embodiment, the rotating shaft (45) of the stirring impeller 40 is inserted into the bearing portion 14 in parallel with the liquid surface S of the stored liquid M, and just below the stirring impeller 40. The lower wing bottom surface portion 24 is disposed at a position lower than the left and right mounting bottom surface portions 22 and 22 attached to the chassis of a speed sprayer (not shown) by the four stud bolts 16. A downward projecting recess 21 is formed as the lowest position, and the lower half or more of the stirring impeller 40 is located at a position lower than the mounting bottom surface portion 22, in other words, the rotational axis O of the stirring impeller 40 (supported on the bearing portion 14). The central axis of the rotation shaft 45 is disposed at a position lower than the mounting bottom surface portion 22.
[0012]
In addition, an inclined bottom surface portion 26 is formed which is upward from the blade bottom surface portion 24 in the direction in which the rotation axis O of the stirring impeller 40 extends, and the width thereof becomes narrower as the distance from the blade bottom surface portion 24 increases. The side surface portions 32, 32, 34, 34 located on the left and right of the wing lower bottom surface portion 24 and the inclined bottom surface portion 26 are inclined so as to open upward and outward, and the wing lower bottom surface portion 24, the inclined bottom surface portion 26, the lower projecting concave portion 21 is formed by the lower portions of the side surface portions 32, 32, 34, 34 and the back surface portion 36 that pivotally supports the rotating shaft 45, and the stored chemical solution M is stored in the stirring impeller 40. Thus, as shown by an arrow P in FIGS. 2 and 5, the mixture is circulated and stirred so as to be pushed forward.
[0013]
A drain port 50 is provided laterally on one side of the lowest portion of the downward projecting recess 21.
In the chemical tank 10 with the stirring impeller of the present embodiment configured as described above, the blade lower bottom surface portion 24 positioned directly below the stirring impeller 40 is disposed at a lower position than the mounting bottom surface portion 22, and Since the lower protruding recess 21 having the lowest blade bottom surface portion 24 is formed, it is possible to insert more than the lower half of the stirring impeller 40 into the lower protruding recess 21, and thus the stirring impeller. More than the lower half of 40 can be disposed at a position lower than the mounting bottom surface portion 22.
[0014]
In this case, since the cross sectional area of the downward projecting recess 21 is considerably smaller than the cross sectional area passing through the mounting bottom surface portion 22 in the chemical liquid tank 10, the amount of chemical liquid (residual liquid amount) stored in the downward projecting recess 21 is Can be kept in a small amount.
[0015]
Therefore, the chemical tank 10 with a stirring impeller of the present embodiment has a conventional rectangular parallelepiped shape having a substantially equal cross-sectional area from the bottom surface to the upper portion, and the entire bottom surface is an attachment surface that is attached to a chassis of a speed sprayer or the like. The outer diameter of the stirring impeller can be increased as compared with that, the stirring performance can be improved, and the timing at which the stirring impeller 40 is exposed to the air as the stored liquid M decreases can be delayed. Therefore, problems such as foaming can hardly occur, the tank capacity can be fully utilized, and the downward projecting recess 21 and the drain port 50 in which the remaining liquid is collected can be provided easily and rationally.
Moreover, since the said bearing part 14 is always cooled effectively with the stored liquid M, the durability of a bearing improves and it is suitable.
[0016]
FIG. 6 shows another embodiment of the chemical tank with a stirring impeller according to the present invention. In the chemical tank 10 ′ with a stirring impeller of the illustrated embodiment, the stirring impeller 40 ′ has an inclined bottom surface from the first embodiment. The bearing portion 14 of the rotating shaft 45 is disposed near the portion 26 ′, and the stored liquid M is in a direction opposite to that of the first embodiment, as indicated by an arrow Q in the drawing, by the stirring impeller 40 ′. The bearing portion 14 is allowed to flow along the side wall portion where the bearing portion 14 is provided, and is diffused around the bearing portion 14 to be agitated. Cooling of the bearing portion 14 is also more positive. Can be done.
[0017]
Further, the downward projecting recess 21 ′ has a smaller capacity than that of the first embodiment.
Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various designs can be used without departing from the spirit of the invention described in the claims. It can be changed.
[0018]
【The invention's effect】
As understood from the above description, according to the present invention, together with Ru can be improved stirring performance can be increased outer diameter of the stirring impeller as possible, with respect to a decrease in the residual liquid quantity Providing a chemical tank with a stirring impeller capable of delaying the timing of exposure of the stirring impeller to the air, preventing problems such as foaming, making full use of the tank capacity, and rationally and easily arranging the drain port, etc. it can.
[Brief description of the drawings]
FIG. 1 is a rear view showing an embodiment of a chemical tank with a stirring impeller according to the present invention.
FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
3 is a cross-sectional view taken along arrow III-III in FIG.
FIG. 4 is a partially cutaway perspective view of the chemical liquid tank shown in FIGS.
5 is an enlarged cross-sectional view of a main part of FIG.
6 is a cross-sectional view corresponding to FIG. 2, showing another embodiment of the chemical tank with a stirring impeller according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Chemical solution tank 14 with stirring impeller 14 Bearing part 21 Lower protrusion recessed part 22 Tank mounting bottom part 24 Wing bottom part 26 Inclined bottom part 32 Side part 34 Side part 40 Stirring impeller 45 Rotating shaft 50 Drain port S Liquid level M Storage liquid O Axis of rotation

Claims (4)

The rotating shaft (45) of the stirring impeller (40) is inserted in parallel with the liquid surface (S), and the lower blade bottom surface portion (24) positioned directly below the stirring impeller (40) is the tank mounting bottom surface portion (22). A lower projecting recess (21) is disposed at a lower position, with the blade lower bottom surface portion (24) being the lowest position, and a part or all of the stirring impeller (40) is the mounting bottom surface portion (22). ) A chemical tank with a stirring impeller arranged at a lower position ,
An upward inclined bottom surface portion (26) is formed in the direction in which the rotation axis (O) of the stirring impeller (40) extends from the bottom surface portion (24) below the blade, and the width of the inclined bottom surface portion (26) is It is narrowed away from the bottom surface of the wing (24),
Both side surface portions (32, 32, 34, 34) located on the left and right sides of the blade lower bottom surface portion (24) and the inclined bottom surface portion (26) in the downward projecting recess (21) are inclined so as to open upward and outward. A chemical solution tank with a stirring impeller . The chemical liquid tank with a stirring impeller according to claim 1, wherein the rotation axis (O) of the stirring impeller (40) is disposed at a position lower than the mounting bottom surface portion (22). The chemical tank with a stirring impeller according to claim 1 or 2, wherein a drain port (50) is provided in the downward projecting recess (21). With reservoir solution (M) is caused to flow toward the bearing portion (14) side of said rotary shaft (45) by the stirring impeller (40), is adapted to be brought diffusion around the bearing portion (14) The chemical solution tank with a stirring impeller according to any one of claims 1 to 3, wherein the chemical solution tank is equipped with a stirring impeller.

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