JPH0225474Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a stirring device for pulverizing clay minerals, etc. and mixing them with a liquid to form a slurry or paste. It can be crushed and mixed uniformly with liquid without destroying the crystal structure.

Traditionally, stirring devices for crushing clay minerals and mixing them with liquids have been equipped with a rotating shaft with multiple cutters that rotate at high speed in a stirring tank, or devices that rotate the stirring tank itself. has been done.

However, in the former case, as the cutter rotates at high speed, clay minerals are blown away by centrifugal force and collect on the tank wall, making it impossible to crush them sufficiently.
Moreover, the high-speed rotation of the cutter destroys the fibrous, scaly, layered, etc. crystal structures contained in clay minerals, and furthermore, when the clay minerals have a low concentration, stirring is difficult. The entire tank can be stirred, but when the concentration of clay minerals is high, only the area around the cutter is stirred, and the entire tank cannot be made to flow.Also, although the latter has a stirring function, it does not have the function of crushing the clay minerals. No conventional equipment has been able to satisfy both the functions of crushing and mixing clay minerals.

The present invention was developed in view of the above-mentioned drawbacks of conventional devices.The present invention has a vertically mounted inner cylinder in the center of the stirring tank that is rotated by a drive mechanism in which a plurality of cutters are fixed radially on the outer wall almost horizontally. The inner cylinder has a rotating shaft whose upper and lower parts are supported by bearings and is rotated by a drive mechanism, and screw-shaped blades arranged spirally around this rotating shaft. By having the above-mentioned structure, the present invention is capable of efficiently circulating clay minerals without collecting on the bottom of the stirring device or the tank wall, and the stirring device of the present invention The device is capable of stirring the entire inside of the stirring tank using a cutter installed in the inner cylinder, and therefore can flow the entire inside of the stirring tank even when clay minerals are highly concentrated. It is possible to crush the clay minerals without destroying the fibrous, scaly, layered, etc. crystal structures contained in the clay minerals that are circulated through the cutters installed in a radial manner. By circulating it, it can be uniformly mixed with a liquid to form a slurry or paste.

The configuration will be explained below based on the drawings of one embodiment.

Reference numeral 1 is a U-shaped pedestal, and 2 is a stirring tank provided perpendicularly to the pedestal 1 and having an inlet 3 at the upper part and an outlet 4 at the lower part. Reference numeral 5 denotes a rotating shaft provided vertically at approximately the center of the stirring tank 2, the upper and lower parts of which are supported by bearings 6 and 7; 8 is a screw-shaped blade fixed to the rotating shaft 5 in a spiral manner; Reference numeral 9 denotes an inner cylinder which is provided so as to cover the screw-shaped blade, its inner wall is fixed to the tip of the screw-shaped blade 8, and a plurality of cutters 10 are provided approximately horizontally radially on the outer wall. 11 is a pulley fitted to the upper end of the rotating shaft 5; 12 is an electric motor provided on the upper part of the frame 1;
A pulley 14 is fitted onto the drive shaft 13 and connected to the pulley 11 fitted onto the upper end of the rotating shaft 5 via a belt 15. 16 again
are a plurality of plate-shaped protrusions vertically provided on the inner wall of the stirring tank 2, facing the plurality of cutters 10 fixed radially to the outer wall of the inner cylinder 9.

Then, to crush the clay minerals and mix them with water to form a slurry or paste, the electric motor 12 provided on the top of the pedestal 1 is started, and the rotating shaft 5 is rotated at 1800 revolutions per minute via the belt 15. Rotating shaft 5
As a result, the screw-shaped blades 8 attached to the shaft 5, the inner cylinder 9, and the cutters 10 provided radially on the outer wall thereof are rotated. Next, when granular clay minerals and water are introduced through the inlet 3 provided at the top of the stirring tank 2, these are raised from the bottom of the stirring tank 2 into the inner cylinder 9 by screw-like blades 8 provided on the rotating shaft 5. It is something that can be done. Clay minerals and water rise inside the inner cylinder 9 while being mixed, and are pushed out into the stirring tank 2 from the upper end of the inner cylinder 9. The mixed clay mineral and water descend between the stirring tank 2 and the outer wall of the inner cylinder 9 while being crushed and mixed by the cutter 10, and reach the bottom of the stirring tank 2. Then, the clay minerals are sucked into the inner cylinder 9 again by the screw-like blades and ascend inside the inner cylinder 9, where they are repeatedly crushed and mixed while circulating as described above, and the clay minerals become fibrous and scaly. It was crushed into a slurry without destroying the layered crystal structure. Furthermore, by providing a plurality of protrusions 16 on the inner wall of the stirring tank 2, even when clay minerals are crushed by the cutter 10 and thrown onto the outer wall of the stirring tank 2, turbulent flow is caused by the clay minerals colliding with the protrusions. This prevents the clay minerals from simply rotating along the stirring tank, and instead of immediately falling to the bottom of the stirring tank 2, they fall over time, allowing for more efficient pulverization and improved mixing. It is something that will be done.

In addition, the stirring device of the present invention rotates the rotating shaft 5 in the opposite direction to crush and mix clay minerals inside the stirring tank 2 using the cutter 10 provided on the outer wall of the inner cylinder 9. It is also possible to suck the clay mineral into the inner cylinder 9 by means of screw-shaped blades 8 provided in the inner cylinder 9 and transport it downward, thereby circulating it in the opposite direction.

As mentioned above, the present invention has a dual structure consisting of a stirring tank and an inner cylinder with a screw installed inside, so that clay minerals with a high concentration can be efficiently circulated. By integrally rotating the screw-shaped blades and the cutter provided on the outer wall of the inner cylinder, the circulation of clay minerals and the crushing and mixing by the cutter can be effectively achieved. It can be pulverized without destroying scaly, layered, etc. crystal structures, making it extremely useful in industry.

[Brief explanation of drawings]

Figure 1 is a partially cutaway front view of the stirring device of the present invention.
FIG. 2 is a cross-sectional view taken along the - line in FIG. 1. 2: stirring tank, 5: rotating shaft, 8: screw-shaped blade, 9: inner cylinder, 10: cutter, 16: protrusion.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a vertically installed stirring device consisting of a stirring tank, an inner cylinder, and a double structure, there is a stirring tank with an inlet at the top and an outlet at the bottom, and an area approximately at the center of the stirring tank. A rotating shaft whose upper and lower ends are supported perpendicularly to bearings and rotated by a drive mechanism, a screw-shaped blade fixed to the rotating shaft in a spiral manner, and a screw-shaped blade attached to the tip of the screw-shaped blade radially on the outer wall. A stirring device characterized by having an inner cylinder in which a plurality of cutters are fixed almost horizontally. 2. Registration of a utility model characterized in that a plurality of protrusions are provided on the inner wall of a stirring tank with an inlet at the top and an outlet at the bottom in opposition to a plurality of cutters fixed radially to the outer wall of the inner cylinder. A stirring device according to claim 1.