JPS6236508Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The disclosed technology belongs to the field of technology for efficiently stirring and mixing a plurality of liquids in a stirring tank.

Therefore, in this invention, a stirring blade connected to the rotating shaft of a drive device attached to the stirring tank is placed inside the stirring tank filled with a plurality of liquids, etc., and the material to be treated is stirred by the rotation of the stirring blade. mixing is allowed to take place;
In contrast, this invention relates to a stirring device in which a baffle plate is provided near the inner circumferential wall of the stirring tank, and the baffle plate generates turbulent flow when the stirring blade rotates. This invention relates to a stirring device in which a plate is freely movable and driven to rotate on a shaft different from the stirring blade.

<Prior Art> Conventionally, as shown in FIG. 1, when mixing a plurality of liquids 3 filled in the stirring tank 2 of the stirring device 1, the stirring blades 4 facing the stirring tank 2 are A rotating shaft 7 of a motor 6 supported on the upper part of the stirring tank 2 via a bracket 5 is rotated to rotate the stirring tank 2 integrally, and the liquid 3 is stirred by the rotation.

However, simply rotating the stirring blades 4 described above creates a rotating flow, often a laminar rotating flow, in the stirring tank 2, and the relative velocity between the liquid phases decreases, making it difficult to stir. In the past, baffle plates 9, 9, etc. were further fixed on the inner wall of the stirring tank 2 via supports 8, 8, etc. to create disturbance to the rotating flow in the stirring tank 2, thereby causing a plurality of It was put into practical use in such a way that the liquid 3 was stirred efficiently.

<Problems to be solved by the invention> However, in the above-mentioned conventional stirring device 1, a Karman vortex is generated on the back surface of each of the baffle plates 9, 9, etc., and as a result, the liquid 3 partially stagnates. As a result, the liquid 3 is not sufficiently stirred, resulting in a disadvantage that the stirring efficiency is reduced.

In addition, due to the generation of Karman vortices, the rotational resistance of the stirring blades 4 increases, which increases power costs, which necessitates increasing the size of the motor 6, which increases the space it occupies, increasing manufacturing costs, maintenance and inspection costs, etc. It had the disadvantage of costing a lot of money.

The purpose of this invention is to solve the problems of the stirring device based on the above-mentioned conventional technology, and to reduce the stirring resistance and improve the stirring and mixing efficiency of multiple liquids flowing into the stirring tank. It is an object of the present invention to provide an excellent stirring device that is useful in the field of fluid processing technology application in industry.

<Means/effects for solving the problems> In accordance with the above-mentioned purpose, the structure of this invention, which is based on the scope of the above-mentioned utility model registration claims, is to solve the above-mentioned problems by controlling multiple liquids in the stirring tank. When the material to be processed is stirred by the stirring blade at the tip of the rotating shaft of the drive device attached to the stirring tank via a bracket, the material to be processed generates a rotational flow in the stirring tank, and at the same time, At least one baffle plate, which is rotatable on an axis different from the axis of rotation for the stirring blades near the inner wall surface of the stirring tank, rotates with respect to the rotational flow to create turbulence in the rotational flow. In addition, technical measures have been taken to create flow in the material to be processed that remains between the baffle plates so that the components of the material to be processed are mutually stirred.

<Example> Next, an example of this invention will be described below based on the drawings from FIG. 2 onwards. Furthermore, the first
Components having the same features as those in the drawings will be described using the same reference numerals.

In the embodiment shown in FIGS. 2, 3, and 4, a bottomed cylindrical stirring tank 2 of the stirring device 1' stores a plurality of predetermined liquids as objects to be treated, and the upper surface of the stirring tank 2 is A motor 6 as a driving device is attached via a bracket 5, and a stirring blade 4 attached to a rotating shaft 7 of the motor 6 faces inside the stirring tank 2.

Supports 8', 8', . . . are fixed to the inner circumferential wall of the stirring tank 2, and as shown in FIG. …
are pivotally supported at their upper and lower ends to the supports 8', 8' via pins 10, 10, . . . , and each baffle plate 9', 9', . It is rotatable about the pins 10, 10 as the center of rotation.

In the above configuration, when the motor 6 is rotated,
The stirring blade 4 stirs the liquid 3 in the stirring tank 2 around the rotating shaft 7 .

At this time, the liquid 3 in the stirring tank 2 tries to generate a rotational flow, but the S-shaped baffle plates 9', 9'... provided near the inner circumferential wall of the stirring tank 2 receive the rotational flow. Since each pin 10 rotates in the direction shown by the arrow in FIG. 3 to swirl and stir the accumulated liquid 3 near the inner wall of the stirring tank 2, disturbance occurs inside the stirring tank 2.
Liquid 3 is now effectively mixed.

The embodiment shown in FIG.
The baffle plate 9'' rotatably supported through the stirring tank 2 has a screw shape, and when the baffle plate 9'' rotates, vertical turbulence is created in the liquid 3 inside the stirring tank 2. As a result, good mixing is further promoted.

In addition, in the embodiment shown in FIG. 6, a bracket 1 is attached to the upper edge of the glass-lined stirring tank 2', which is superior in corrosion resistance to metal.
The stirring device 1'' has a baffle plate 9 rotatably supported by bearings 15, 15 fixed to the bracket 14 via a pin 10'', and the bolt holes etc. are connected to the inner wall of the stirring tank 2'. Therefore, the corrosion resistance of the stirring tank 2' is not affected.

It goes without saying that the embodiments of this invention are not limited to the above-mentioned embodiments; for example, the baffle plate may be provided with a drive mechanism for forced rotation, and various other embodiments may be adopted. It is possible.

<Effects of the invention> As described above, according to this invention, even if a rotational flow is generated in the material to be treated in the stirring tank by the stirring blades, the baffle plate installed near the inner circumferential wall of the stirring tank basically prevents rotational flow. By imparting turbulence to the rotational flow, the object to be treated can be sufficiently and quickly stirred, and the excellent effect of reliably improving the mixing efficiency can be achieved.

That is, since the baffle plate is rotatably supported in the stirring tank on an axis different from the rotation axis of the stirring blade, Karman vortices are not generated on the back surface of the baffle plate, and the space between each baffle plate is It is possible to stir the accumulated material to be processed between each baffle plate, and also provides turbulence to the rotational flow generated by the rotation of the stirring blades, so that the inside of the stirring tank, including the vicinity of the wall, can be sufficiently stirred. The effect of stirring and mixing the accommodated objects to be processed efficiently and in a short time is achieved.

In addition, since Karman vortices are not generated and stirring is performed efficiently, there is also the advantage that stirring resistance can be reduced and power costs can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of the stirring device, Fig. 2 and the following show examples of this invention, Fig. 2 and 3 are longitudinal and cross-sectional views of the stirring device, respectively, and Fig. 4 is an enlarged view of the baffle plate. A plan view, FIG. 5 is a partial sectional view of another embodiment,
FIG. 6 is a longitudinal sectional view of another embodiment. 5... Bracket, 6... Drive device, 4... Stirring blade, 2, 2'... Stirring tank, 9', 9'', 9...
Baffle plate, 1', 1''... Stirring device.

Claims (1)

[Scope of utility model registration request] Stirring blades supported by the stirring tank via a bracket and linked to a drive device face the inside of the stirring tank, and a baffle plate is provided near the inner circumferential wall of the stirring tank corresponding to the stirring blade. A stirring device characterized in that the baffle plate is rotatably supported on a different axis from the stirring blade in the stirring tank.