JPS5888077A - Classifying apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a classification device for powder and granular materials, and although there have been various classification devices in the past, all of them have drawbacks such as easy clogging and poor classification efficiency. This is not preferable when attempting to efficiently classify a large amount of powder or granular material using a small device.

The present invention eliminates the above-mentioned drawbacks, and an embodiment thereof will be described below with reference to the drawings. Reference numeral 1 denotes a cylindrical introducing body having a powder inlet 2 at its upper end; A transfer screw 4 is fixed to a rotating shaft 3 inserted in the axial direction of the central portion, so that the powder and granular material can be transferred. Reference numeral 5 denotes a cylindrical screen having an inlet 6 at one end for the powder and granular material to be transferred by the transfer screw 4, and the screen is held in a cylindrical shape by a fixed frame 1 formed on the outer periphery. A sprocket wheel 9 operated by a motor different from the motor of the rotating shaft 3 is engaged with a chain 8 which is located on the outer periphery of the introduction body 1 with one end protruding and is fixed and protruded from the outer periphery of the fixed frame 1, thereby forming a cylindrical shape. The screen 5 is formed to be rotatable.

Reference numerals 11 and 12 denote retaining rings whose outer peripheries are in contact with both ends of the outer periphery of the fixed frame 7 of the cylindrical screen 5, and are rotatably fixed to the casing 13 by an appropriate method. Reference numeral 14 denotes a stirring blade inserted into the cylindrical screen 5 from one end to the other.
5, a plurality of screens are fixed at appropriate intervals in the circular direction, and the outer edge is close to the inner surface of the cylindrical screen 5, and the installation angle is inclined with respect to the precision of the rotation shaft 3, so that the powder and granular material can be agitated. At the same time, it is transferred toward the other end of the cylindrical screen 5, and powder particles or impurities having a particle size of a certain size or more are discharged from the discharge port 16 at the other end. Reference numeral 11 denotes a dropping port through which powder particles of a certain particle size or less that have passed through the cylindrical screen 5 fall, and are connected to a suitable hopper or the like. Reference numeral 18 indicates 1-Lee of the rotating shaft 3.

In the structure as described above, when the rotating shaft 3 is rotated while the appropriate powder or granular material to be classified is inputted from the input port 2,
The powder and granules are introduced into the cylindrical screen 5 through the inlet 6 by the transfer screw 4 and are discharged, while impurities, large particles, etc. are sent to the stirring blade 14 and discharged through the discharge port 16. Since the cylindrical screen 5 is constantly rotating during this classification process, the entire surface of the screen can be used for the classification process, which improves classification efficiency, prevents clogging, and facilitates the removal of lint-like materials. It can be carried out. In addition, since the stirring blade 14 has a slightly inclined mounting angle with respect to the axis of the rotating shaft 3, the cylindrical screen 5 can be stirred while stirring the powder.
The entire surface of the cylindrical screen 5 from one end to the other end can be used as a classification work surface, and there is no need to tilt the cylindrical screen 5 in order to transfer the powder and granules, allowing stable installation of the device. This makes it possible to

In the above-mentioned classification operation, the number of rotations of the stirring blade is the same as 51 times of the cylindrical screen and 1,410 times of the stirring blade, and the direction of rotation can be arbitrarily determined such as the same direction or opposite direction. Which particles are not preferable to be rotated in the opposite direction or made into fine particles is determined depending on the purpose of uniform classification by rotation in the same direction.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a sectional view;
FIG. 2 is a sectional view taken along the line AA in FIG.

Claims (1)

[Claims] A powder inlet is provided at one end of a cylindrical screen located approximately horizontally, and this cylindrical screen is rotatable by an electric motor, and a cylindrical screen is provided in the center of the cylindrical screen that rotates independently of the cylindrical screen. A rotating wheel is inserted through the rotating wheel, and the stirring blade is rotated once by the rotating wheel. A classification device characterized by being able to transport particles toward the other end of a cylindrical screen while classifying them.