JPH0422824Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (industrial application field) This invention is a synthetic resin stirring tank used for adding another liquid or solid to a liquid and stirring and mixing it with a rotary stirrer. This is an idea that can be used.

(Prior Art) The present inventor first developed a cylindrical synthetic resin stirring tank with vertical protrusions to improve the stirring effect.
We devised a stirring tank (Utility Model Application No. 63-35429) with a V-shaped cross section that can be manufactured by rotational molding with vertical ridges.

As shown in FIGS. 6 and 7, the agitation tank devised earlier has a bottomed cylindrical main body 1 made of synthetic resin, with vertical protrusions 2 having a V-shaped cross section formed on the side wall of the main body 1, and mixed by a rotary agitator 3. This ensures good mixing when the liquid is stirred.

(Problem to be solved by the invention) In the stirring tank of the previous invention, the vertical protrusion 2 is weak against internal pressure, and when strong internal pressure is applied, this part bulges out as shown in Figure 8. Because of this tendency, it was necessary to attach the reinforcing frame 4 when the stirring tank became large.

The present invention attempts to improve this point by increasing the strength of the protruding portion by the tank itself, thereby reducing the degree of reinforcement by the reinforcing frame.

B. Structure of the invention (Means for solving the problem) This invention has a side wall of a synthetic resin tank protrude inward with a V-shaped cross section to form a vertical protrusion 2, so that the liquid during agitation is The front surface of the protrusion 2 facing the flow is formed by dividing the protrusion 2 into a plurality of stages of small protrusions 2a in a synthetic resin stirring tank that is approximately perpendicular to the inner surface of the tank in front of the protrusion 2. The above-mentioned problems have been solved by providing a synthetic resin stirring tank characterized in that a cylindrical portion 5 is interposed above and below and between each protrusion.

(Function) Since the cylindrical portion is difficult to deform due to internal pressure, when it is interposed above, below, and between the small protrusions having a V-shaped cross section, deformation is prevented together with the walls 6 formed above and below the small protrusions. When the stirring tank is small, a reinforcing frame is not required, and even when the stirring tank is large, the reinforcing frame can be made simple.

(Example) Figures 1 to 5 show examples of the present invention, with Figure 1 being a partially cut side view, Figure 2 being a plan view, and Figure 3 being an enlarged external perspective view of the protrusion. , FIG. 4 is an enlarged sectional view taken along line BB in FIG. 1, and FIG. 5 is an enlarged sectional view taken along line CC in FIG.

The same reference numerals are used for the same parts as those of the previously designed stirring tank shown in FIGS. 6 and 7, and these will be explained next.

On the side wall of the bottomed cylindrical main body 1, small vertical protrusions 2a, 2a, which are formed by dividing the previously devised longitudinal protrusions 2 with a V-shaped cross section, are provided with cylindrical parts 5, 5 at the top, bottom, and middle.
It is formed in two stages with .

The number of stages of the protrusions 2a, 2a is determined by the size of the stirrer. Further, the number of protrusions in the circumferential direction, cross-sectional shape, size, etc. are also determined by the type of material to be stirred, the stirring state, etc.

In this way, the long vertically long protrusions 2 of the previous design are replaced by the small protrusions 2a, 2 with short vertical lengths by the cylindrical portion 5.
When divided into sections a, the protrusions 2a, 2a are reinforced by the cylindrical portion 5, which is strong against internal pressure, and the upper and lower V-shaped walls 6, 6, so that they are difficult to bulge out as shown in FIG.

Further, the mixture to be stirred flows in a detour as shown by the arrow a in FIG. 4 in the portion of the small protrusion 2a, but flows in the circumferential direction in the cylindrical portion 5 as shown in the arrow b in FIG. Since the two flows have different flow velocities, a good mixing effect can also be obtained.

The construction of a synthetic resin stirring tank by interposing the cylindrical portion 5 between the small protrusions 2a, 2a having a V-shaped cross section in this way can be easily done by rotational molding.

C. Effects of the invention (1) Small protrusions 2a, 2 with short vertical length and V-shaped cross section
Since the cylindrical portions 5 are interposed above and below a, the small protrusions are difficult to bulge due to internal pressure.

(2) Therefore, the reinforcing frame 4 can be omitted or made simpler.

(3) Since the rotating stirrer is used, the liquid to be mixed rotating in the stirring tank has a different flow rate between the small protrusions 2a and the cylindrical portion 5, so that good mixing is achieved.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of the present invention, with Figure 1 being a partially cutaway side view, Figure 2 being a plan view, Figure 3 being an enlarged external perspective view of the protrusion, and Figure 4. is an enlarged sectional view taken along line B-B in Figure 1, and figure 5 is an enlarged cross-sectional view taken along line C-C in Figure 1.
Cross-sectional views, Figures 6 and below show the previous design, Figure 6 is a partially cut side view, Figure 7 is a sectional view taken along line A-A in Figure 6, and Figure 8 shows the bulging state of the protrusions. FIG. 1...Main body, 2...Protrusion, 2a...Small protrusion, 3
... Rotating stirrer, 4 ... Reinforcement frame, 5 ... Cylindrical part, 6 ... V-shaped wall.

Claims (1)

[Scope of utility model registration request] The side wall of the synthetic resin tank is made to protrude inward with a V-shaped cross section to form a vertical protrusion 2, and the front surface of the protrusion 2 that faces the liquid flow during stirring is the inner surface of the tank in front of the protrusion 2. In a stirring tank made of synthetic resin, the protrusion 2 is divided into multiple stages of small protrusions 2a whose upper and lower ends are closed by V-shaped walls 6, and A synthetic resin stirring tank characterized in that a cylindrical portion 5 is interposed between the strips.