JPH0545389Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a planetary mixer in which the blades are moved in a planetary manner to knead materials to be processed.

(Prior art and problems) In general, a planetary mixer uses two blades that move planetarily within a tank to apply shearing force to the material between the blades and the inner wall of the tank to disperse the material. It is not possible to apply sufficient shearing force to areas other than those close to the inner wall, resulting in poor efficiency, and when processing highly viscous materials, the materials sometimes clump together into columns.

(Issues to be solved by the invention) This invention eliminates dead space in the movement of the blade in the tank, and applies shearing force not only between the blade and the inner wall of the tank, but also between the blades, making it possible to efficiently disperse and knead materials. The aim is to provide a planetary mixer.

(Means for solving the problem) According to the present invention, in order to achieve the above object, three blade shafts that move planetarily are arranged at equal intervals in the direction of revolution, and the blade ends overlap the width of the blades attached to the blade shafts. A planetary mixer is provided, which is formed so that the blade ends rotate close to the inner wall of the tank.

(Example) In the figure, the main body 1 includes a removable tank 2.
A stirring head 3 is formed on the tank. The stirring head 3 is guided by a guide rod 4 and raised and lowered by a hydraulic cylinder 5, but sometimes two hydraulic cylinders are provided in the form of a gate for raising and lowering. The stirring head is provided with a motor 7 for rotating a drive shaft 6. The transmission mechanism from the motor to the drive shaft can be configured in various ways, and in the figure, a drive sprocket 8 provided on the motor shaft is used.
and a driven sprocket 9 provided on the drive shaft are connected by a chain 10.

The drive shaft 6 is inserted into a support cylinder 11 fixed to the stirring head 3, and the upper and lower parts are supported by bearings 12, 1.
3 (Fig. 2). A rotary plate 14 is fixed to the lower end of the drive shaft 6 with a key 15, and the peripheral edge of the rotary plate is formed in a cylindrical shape and extends upward, and a rotatable plate 14 is fitted around the support cylinder 11. It is screwed onto the cover plate 16. The rotating plate 14
Three blade shafts 17, 17, 17 are pivotally attached to the drive shaft 6 so as to surround the drive shaft 6. The blade axes are arranged at equal intervals in the revolution direction, that is, when viewed from the plane, each axis is located at each vertex a, b, and c of an equilateral triangle (Fig. 3).
They are rotatably supported by bearings 18 and 19, respectively. A planetary gear 20 is fixed to the tip of the blade shaft 17 with a key 21, and the planetary gear engages with a sun gear supported on the support tube 11. In the figure, the sun gear is an internal sun gear 22 fixed to the support tube 11 so as to surround the planetary gears.
However, if desired, a sun gear may be provided at the tip of the support cylinder so as to be located at the center of the planet gear (not shown).

A blade 23 is attached to the lower end of the blade shaft 17.
is attached by a key 24. The blade can have various structures, for example, a frame-shaped blade, a first
As shown in the figure, a blade having a shape in which the lower portion is twisted by 90 degrees may be used, but the width of the blade 23 is formed so that the blade ends overlap when rotated. That is, the diameter of the blade is determined by the distance between the blade axes,
bc, formed longer. Also, one side of the blade rotates close to the inner wall of the tank.
The length is slightly shorter than the distance from the positions a, b, and c of the shaft to the inner wall of the tank, and the other side extends to the center of the tank. As shown in FIG. 3, when the blade end of one blade 24 is facing toward the center, the blade ends of the other two blades 24 are located near the intersection of the rotational trajectories of each blade. The blades are arranged so that when each blade is rotated in the direction of the arrow, the blades overlap within the range where the rotation loci of each blade intersect. The outer periphery of the rotating plate is surrounded by a cover 25 attached to the stirring head 3.

When the material to be treated is put into the tank 2, the stirring head 3 is lowered, the blade 23 is inserted into the tank, and the drive shaft 6 is rotated, the blade moves planetarily close to the inner wall of the tank and the blade Since the edges of the material rotate while overlapping, a strong shearing force is applied to the material between the blade and the inner wall of the tank and between the blades, and the material is sufficiently dispersed and
Processes such as stirring and kneading can be performed. Also,
Since the three blades move in an overlapping manner, there is hardly any dead space in the tank, which allows efficient processing and prevents the material from clumping together into columns.

(Effects of the invention) The present invention is constructed as described above, and three blade shafts are attached to the rotating plate, and each blade shaft is provided with a blade, so the three blades rotate on their own axis while revolving inside the tank. Stir and knead the material to be treated,
In this case, the blade shafts surround the drive shaft, and each shaft is provided at the apex of an equilateral triangle when viewed from the plane, and is spaced at equal intervals around the drive shaft.
The load is applied evenly to the blade shafts, preventing unbalanced loads and preventing negative effects such as vibration.In addition, the shafts between the blade shafts are designed to rotate with the blade ends overlapping the diameter of the blades mentioned above. Since the length is longer than the distance between the blades and the length is such that one side is close to the inner wall of the tank and the other side extends to the center of the tank, the planetary motion of the blade causes the object to be processed to have a gap between the blade and the inner wall of the tank. A strong shearing force is applied between each blade, and a reliable kneading action is given to the material to be processed at the overlap part, and a shearing force is also applied by the blades at the center of the tank, so that the material is gathered into a column. The mixture can be sufficiently stirred, kneaded, dispersed, etc. without any problems.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway front view, FIG. 2 is an enlarged sectional view of the drive shaft portion, and FIG. 3 is a plan view showing the relationship between the blades. DESCRIPTION OF SYMBOLS 1... Main body, 2... Tank, 3... Stirring head, 6... Drive shaft, 11... Support cylinder, 14... Rotating plate, 17... Blade shaft, 20... Planetary gear,
22...Internal sun gear, 23...Blade.

Claims (1)

[Scope of utility model registration request] A support cylinder is provided in the stirring head located on the tank, a drive shaft is inserted into the support cylinder, a rotary plate is fixed to the drive shaft, and the rotary plate surrounds the drive shaft so that each axis is correct when viewed from a plane. Three blade shafts are mounted at the apexes of the triangle, a planetary gear is provided at the tip of the blade shaft, and the planetary gear is engaged with a sun gear supported on the support cylinder. A planetary mixer equipped with a blade having a length longer than the distance between the blade axes so that the blade ends overlap and rotate at the lower end, and a blade having a diameter such that one side is close to the inner wall of the tank and the other side extends to the center of the tank. .