SU63455A1 - Device for dry enrichment of kaolin and other fine materials - Google Patents

Description

A device is proposed for dry enrichment of kaolin and other thin materials, made in the form of a series of air separators connected in a unit with diameters increasing along the air jet. Each separator entering the unit is formed by two funnels arranged one inside the other to separate the individual fractions of the precipitating material.

According to the invention, in order to direct the air stream from the point of delivery to the point of release along a zigzag path, each separator, with its constricted part, is inserted into a larger separator, leaving the annular gaps between each other (funnels) installed for circulation. of the solid particles, the rotational motion is connected to the airflow. For this, in each annular gap between the funnels of the adjacent separators, spiral plates are installed blades of the turbine wheel, and for supplying additional air in the gaps between the funnels are pipes connected to the pressure fan. To issue the same individual fractions of material deposited from separate separator and collecting in ring receivers, rings with strokes are applied, rotated from the general drive.

In FIG. 1 shows a vertical section of the proposed device; FIG. 2 is a section along I-I in FIG. one; FIG. 3 - a detail of the device.

Inside pipe 1, which supplies air flow with kaolin dust suspended in it, pipe 17 is installed, which serves as a rack on which separate separators 2, 3, 4, 5, b and 7 are mounted. Each separator of its narrower part is inserted into a larger separator leaving the annular gaps 14, 15 for circulating the air jet between the funnels mounted one behind the other forming the separator. Inside each separator, in its “izhny

parts, a flat wooden ring is placed, forming a circular receiver 9. The ring has an opening, the axis of which is parallel to the axis of the ring. A pipe 12 is connected to this opening for removal of individual fractions of kaolin dust deposited in an annular receiver. To release the dust collected in the receiver, there are strips 8, which are attached to the rotary ring 13 with a ring gear, driven by the cable drive 16, common to all separators. In order to transmit the rotation to the rings 13, serve the teeth And, sitting on the rollers 18, in turn rotated through the rollers 10.

In each annular gap 14 between the funnels of adjacent separators, spiral plates are installed according to the type of blades of the turbine wheel, designed to communicate rotational motion to the air jet.

To release the air released from kaolin particles suspended in it, the pipe 19 serves, and for removing the precipitated kaolin dust fractions - screws 20, separate for each of the pipes 12. Additional air is fed into the gaps 14, 15 between the separator funnels by annular pipes 21 with holes. The pipes 21 are connected to a pressure fan.

The operation of the proposed device is based on frequent and abrupt changes in the direction of movement of the air jet with its successive expansion at each stage when transferring from one separator to another.

The air containing kaolin dust injects fan 1 into pipe 1. Moving upward through the separators, a stream of air encounters conical guides 22 in them, cutting them last and directed into annular gaps 14. In these gaps, due to the presence of helical plates, In addition to the translational motion, the rotary motion, which contributes to more efficient deposition of the particles in it, is also reported to the air jet. When moving from the gap 14 to the gap 15, the air jet abruptly changes its direction, is expanded and washed by additional clean air coming through the tubes 21.

At each stage of separation, more than yellow dust particles suspended in a stream of air fall out. This dust is deposited in the ring receptacle 9 and the strokes 8 is displaced into pipes 12, of which falls into the screws 20. The collected dust is carried to the bins.

The dust-free air through pipe 19 is vented to the atmosphere.

Subject invention

Claims (4)

1. A device for dry enrichment of kaolin and other thin materials, consisting of a series of air separators connected to a common unit with diameters increasing along the air flow, formed from each of two funnels located one inside the other to separate the individual fractions of the deposited material, characterized by that, in order to direct the air stream from the point of delivery to the point of release along a zigzag path, each separator is inserted with its constricted part into an adjacent larger separator, with left it open passages for circulating jet tion in the annular gaps defined between successive craters. 2. The form of the device according to claim 1, characterized in that in each annular gap between the funnels of adjacent separators, spiral plates are installed, in the form of turbine wheel blades, in order to communicate the air jet rotational motion for more efficient deposition of suspended solids. 3. The form of the device according to claim 1.2, characterized in that for issuing separate fractions of material deposited from individual senators collected in ring receivers 9, rings 13 with strokes 8 are applied to rotation from the common drive 16. 4. The form of the apparatus according to claim 1, characterized in that it is used to supply additional air into the gaps between the funnels of pipes 21 connected to a blower fan.  -    mr; FIG. 1. with //,