JPH078780A - Stirring blade - Google Patents

Abstract

(57) [Summary] [Structure] The fluid passages 12 and 13 are formed in the upper and lower portions of the support shaft 11 rotated by the electric motor 4, and the wing bodies 14 attached to both sides of the support shaft 11 are formed by pipes. In addition to the above structure, the middle portion thereof is formed in a meandering shape along the support shaft body 14, and the upper and lower portions of the blade main body 14 are connected to the fluid passages 12 and 13 of the support shaft body 11. [Effect] When a heat transfer coil for cooling or heating is arranged in the space around the wing body, a fluid can flow through the wing body formed in a meandering shape via the support shaft. Compared with the above, the mixed liquid in the stirring tank can be cooled or heated over the whole and sufficient mixing and stirring can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stirring blade for mixing and stirring liquids.

[0002]

2. Description of the Related Art Generally, when mixing and stirring liquids, it may be necessary to cool or heat the mixed liquids.

Conventionally, in such a case, a heat transfer coil for flowing a cooling medium or a heating medium is arranged along the inner wall surface of the stirring tank in the stirrer and at a position where it does not come into contact with the stirring blades. It was

[0004]

By the way, as described above, since the heat transfer coil is arranged along the inner wall surface of the stirring tank, there is a problem that the liquid cannot be sufficiently mixed and stirred. .

Therefore, an object of the present invention is to provide a stirring blade capable of solving the above problems.

[0006]

In order to solve the above-mentioned problems, the stirring blade of the present invention forms a fluid passage in at least the upper and lower portions of a support shaft connected to a rotary drive device, and also supports the support shaft. The wing body attached to the side of the wing body is formed of a pipe, and the intermediate portion is formed in a meandering shape along the support shaft body, and the upper and lower parts of the wing body are formed in the upper and lower parts of the support shaft body. It is connected to the passage.

[0007]

In the above structure, since the blade main body is formed in a meandering shape and made of a pipe, and the fluid is flown into the blade main body through the support shaft, for example, the heat transfer coil is arranged around the blade main body. Compared with the configuration described above, the mixed liquid in the stirring tank can be cooled or heated over the whole without hindering sufficient mixing and stirring.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In FIG. 1, reference numeral 1 denotes a stirring blade 2 according to the present invention, a stirring tank 3 for accommodating the stirring blade 2 therein, and the stirring blade 2 described above.
It is a stirrer composed of a rotary drive device for rotating the motor, for example, an electric motor 4.

The stirrer 1 is connected to the drive shaft 5 side of the electric motor 3 and has a support shaft 11 in which upper and lower fluid passages 12 and 13 are formed in the upper and lower parts, and the support shaft 11. The blade main body 14 is arranged so as to project on both sides of the blade 11, and is formed in a meandering shape in the vertical plane and is formed of a pipe.

The lower portion of the support shaft 11 is provided so as to pass through the central portion of the bottom wall portion 3a of the stirring tank 3 and is rotatably supported by a bearing member 15 attached to the bottom wall portion 3a side. Has been done.

Further, a rotary joint member 16 for supplying and discharging fluid is provided on the upper portion of the support shaft 11, and the bearing member 15 for supporting the support shaft 11 has a rotation capable of supplying and discharging fluid. The function of a joint is provided.

A jacket portion 21 capable of supplying and discharging a fluid is provided on the outer peripheral surface of the agitation tank 3, and at a position from the jacket portion 21 to the blade body 14 side so as not to contact the blade body 14. A baffle member 22 formed of a pipe in a U-shape in a plan view is provided so as to project in a state of being communicated with the inside of the plurality of jacket portions 21. That is, each baffle member 22 is projected toward the space portion C in the meandering portion 14a of the blade body 14 so that the fluid can be supplied, and the fluid flows in the U-shaped baffle member 22 in a predetermined direction. I am trying to flow to.

A suitable portion of the meandering portion 14a of the wing body 14 is connected and supported by the supporting member 17 to the supporting shaft 11 side. In the above configuration, when the liquid is mixed and stirred in the stirring tank 3, the supporting shaft 11 is rotated by the electric motor 4 to rotate the blade body 14, and the rotary joint member 16 and the upper fluid passage 12 are passed through, By supplying a cooling fluid B such as water (of course, when cooling is required at the time of mixing and stirring) into the blade body 14, the mixed liquid A is cooled and mixed and stirred throughout the stirring tank 3. can do.

Of course, the cooling fluid B passing through the inside of the blade body 14 is taken out to the outside through the lower fluid passage 13 of the support shaft 11 and the bearing member 15. Further, the cooling fluid B is also supplied into the jacket portion 21 provided on the outer peripheral surface of the stirring tank 3, and the cooling fluid B flows through the baffle material 22 and the meandering portion 14 a of the blade main body 14 is supplied. The concave space portion C is cooled.

That is, the mixed liquid A in the stirring tank 3 is effectively and sufficiently cooled by the cooling fluid B passing through the blade body 14. The number of blade main bodies 14 provided on the side of the support shaft 11 is, for example, one or two.
The number of the baffle members 22 may be appropriately selected, such as four or four, and the location of the baffle material 22 in the plane and the vertical plane may be appropriately selected.

In the above embodiment, the cooling fluid is supplied as the fluid, but of course, when it is necessary to heat the mixed liquid during mixing and stirring (for example, mixing and stirring a high-viscosity liquid). If so), the heating fluid will be supplied.

Further, in FIG. 1, the lower end shape of the blade main body 14 is shown in the horizontal direction, but, for example, the portion near the bowl-shaped bottom wall portion 3a of the stirring tank 3 is also cooled (or heated).
If desired, the lower end of the wing body 14 may be attached obliquely downward as shown by the phantom line in FIG.

Further, although it has been described that the fluid is supplied from the upper part of the support shaft 11 and the fluid is discharged from the lower part, for example, conversely, the fluid can be made to flow from the lower part to the upper part, and the support shaft is also provided. The inside of the body 11 has a double pipe structure, and one of them, for example, the inner space portion is used as a fluid supply passage and the other outer cylindrical space portion is formed as a fluid discharge passage. The fluid may be supplied and discharged.

[0019]

As described above, according to the structure of the present invention, the blade main body is formed in a meandering shape and made of a pipe, and the fluid is allowed to flow in the blade main body through the support shaft. As described above, compared with the case where the heat transfer coil is arranged around the blade main body, the mixed liquid in the stirring tank can be cooled or heated over the whole and sufficient mixing and stirring can be performed.

[Brief description of drawings]

FIG. 1 is a sectional view showing a schematic configuration of a stirrer according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stirrer 2 Stirring blade 3 Stirring tank 4 Electric motor 11 Support shaft body 12, 13 Fluid passage 14 Blade main body

Claims (1)

[Claims] 1. A fluid passage is formed in at least the upper and lower portions of a support shaft connected to a rotary drive, and a blade main body attached to the side of this support shaft is made of a pipe, and an intermediate portion thereof is formed. A stirring blade having a meandering shape along the support shaft, and connecting the upper and lower portions of the blade body to fluid passages formed in the upper and lower portions of the support shaft.