JPH0734928U - Mixing blade for medium and high viscosity - Google Patents

Abstract

(57) [Summary] [Object] To provide a stirring blade for medium and high viscosities, which improves mixing performance of stirring by a simple means. A main wing body 3 having a substantially trapezoidal flat plate whose outer portion 3a is formed in a sawtooth shape is fixed to the left and right of the rotary shaft 2, and there is a space on the back surface of each of the main wing bodies 3 and 3. In the stirring blade 1 provided with the plate-shaped auxiliary blades 4 and 4, plate-shaped lower blades 5 and 5 were fixed to the left and right of the rotary shaft 2 at the lower position of the main blade 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stirring blade suitable for stirring medium and high viscosity liquids in the pharmaceutical industry, food industry, chemical industry and the like.

[0002]

[Prior art]

 As a conventional high-viscosity stirring blade, a main wing body a having a substantially trapezoidal flat plate as shown in FIG. A plate-shaped auxiliary vane d is provided at a distance, and by rotating the inside of the liquid tank, the sawtooth-shaped outer portion c and the auxiliary vane d are used to efficiently agitate medium and high viscosity liquids. Things are known.

[0003]

[Problems to be solved by the device]

 However, in order to stir the liquid in the tank using the above conventional stirring blade, the liquid at the bottom of the tank cannot be sufficiently mixed unless the stirring blade is close to the bottom of the tank. Had a point.

It is an object of the present invention to solve the above problems and provide a stirring blade for high viscosity while improving mixing performance of stirring by a simple means.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention is to fix a main wing body whose outer part is formed in a sawtooth shape with a substantially trapezoidal flat plate to the left and right of the rotation axis and to form a plate-like shape with a space on the back surface of each main wing body In the stirring blade provided with the auxiliary blade body, the plate-shaped lower blade body is fixed to the left and right of the rotating shaft at the position of the lower portion of the main blade body.

[0006]

[Action]

 When the stirring blade installed in the tank is rotated, the liquid remaining in the bottom of the tank begins to flow due to the lower blade body, and thus the liquid at the bottom of the tank is sure to circulate in the tank. As a result, a uniform mixed flow state is formed.

[0007]

【Example】

 Next, one embodiment of the present invention will be described with reference to FIGS.

Reference numeral 1 is a stirring blade, 2 is a rotation axis thereof, and 3 is a main wing body fixed to the left and right of the rotation axis 2. Each main wing body 3 has a vertical inner side and an outer side 3a inclined. It is composed of a trapezoidal plate-like body, the outer portion 3a is formed in a sawtooth shape, and trapezoidal auxiliary wings 4 having a width narrower than that of the main wings 3 are provided on the sides of the back surface of the various wings 3. Then, a rectangular plate-shaped lower wing body 5 was fixed to the right and left sides of the rotary shaft 2 at a lower position of the main wing body 3 at a right angle to the main wing body 3.

Next, the operation of the above embodiment will be described.

Now, when the rotary shaft 2 is rotated in the direction of arrow A, the liquid C in the tank B is circulated by the upper wing body 3 and the auxiliary wing body 4 having the serrated outer portion 3a as shown in FIG. Two highly distinctive streams are generated, the stream D and the lower circulation stream E generated by the lower blade body 5.

Thus, the liquid C staying at the bottom of the tank B is not constrained by the lower blade 5 by the distance F between the lower end of the lower blade 5 and the bottom surface of the tank B. As a result of the lower circulation flow E being surely formed, a uniform mixed flow material is formed in the tank B.

FIG. 3 shows another embodiment of the present invention. For example, when the tank B is lengthened in the axial direction, when the embodiment is used, the liquid C on the upper end of the main wing body 3 The mixing performance of stirring deteriorates.

Therefore, as shown in FIG. 3, an upper wing body 6 having a substantially trapezoidal plate shape is further provided on the left and right of the upper portion of the rotary shaft 2 and has an inclined outer portion 6a having a gradually narrowing lower half portion. It was fixed at a right angle to 3.

Thus, the circulation flow G is further generated by the rotation of the rotary shaft 2, so that the liquid C in the tank B can be uniformly stirred.

[0015]

[Effect of device]

 As described above, according to the present invention, since the plate-shaped lower blades are fixed to the left and right of the rotary shaft at the position of the lower portion of the main blade, the liquid at the bottom of the tank does not stay and the circulation flow is ensured. This has the effect of significantly improving the mixing performance of stirring the liquid in the tank.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a front view showing a usage state thereof.

FIG. 3 is a front view showing a usage state of another embodiment of the present invention.

FIG. 4 is a perspective view showing a conventional stirring blade.

[Explanation of symbols]

 1 Stirring blade 2 Rotating shaft 3 Main wing body 4 Auxiliary wing body 5 Lower wing body

Claims (4)

[Scope of utility model registration request] 1. A main wing body having a substantially trapezoidal flat plate whose outer portion is formed in a sawtooth shape is fixed to the left and right of a rotary shaft, and a plate-shaped auxiliary wing body is provided on the back surface of each main wing body at intervals. In the stirring blade, a plate-shaped lower blade is fixed to the left and right of the rotary shaft at the position of the lower portion of the main blade. 2. The high-viscosity stirring blade according to claim 1, wherein the lower blade is fixed in a direction perpendicular to the main blade. 3. The high-viscosity stirring blade according to claim 1, wherein a plate-shaped upper blade is fixed to the left and right of the rotary shaft at a position above the main blade. 4. The high-viscosity stirring blade according to claim 3, wherein the upper blade is fixed in a direction perpendicular to the main blade.