SU1260043A1 - Classifier of loose materials - Google Patents

Description

The invention relates to a technique for classifying bulk substances by their size and weight, and is an improvement of the known device according to the basic author. St. M 822924.

The aim of the invention is to improve the classification accuracy and reduce the dustiness of the environment by creating a closed circulation of air flow.

FIG. 1 shows a classifier of bulk materials, side view; in fig. 2 shows section A-A in FIG. one.

The bulk materials classifier includes a loading device 1, a curved chute 2, a perforated section 3 connected at the bottom with a chute 2. Inside the chute 2 there is a centrifugal ejector 4 made in the form of a rotor blade 5 with an axial bore b and a branch pipe 7 at the central axis air intake. At the ends of the cylindrical part, a curvilinear chute 2 for passing air flows is provided with openings 8 and connected with them pipelines 9 connected to the initial part of the perforated section 3. The chute 2 has a discharge opening 10 located above the junction of the chute 2 with the perforated section 3 into the chamber which summed up the side pipelines 11.

The device works as follows.

The source material through the loading device 1 enters the vertical axis of the rotating rotor 5, where under the action of centrifugal force it is pressed against the inner radial surface of the curved chute 2 and moves the rotor blades 5 to the discharge hole 10 through which it is thrown onto the perforated section 3. As the material moves in the initial part of the perforated section 3, it is dedusted by the air flow generated by the rotating rotor 5. Fine grains of material raised in suspension This condition is entrained by the air flow along the side pipelines 11 into the chamber located under the perforated section 3, where, due to the reduction in speed, it is precipitated and mixed with the undersize product. The purified air flow enters a closed circulation for reuse.

The proposed design of the bulk materials classifier allows removing class O-1 mm from the upper layer of the material being classified, directing it into the chamber under the perforated portion of the curved chute, pressing down and seating it to the sublattice product, which improves the classification efficiency and reduces dust formation in the surrounding atmosphere.

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Compiled by V. Petrutsshn

Editor N. Slobod nikTekhred I. VeresKorrektor A. Tsko

Order 5157/4 Circulation 565 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

CLASSIFIER OF BULK MATERIALS by ed. St. No. 822924, characterized in that, in order to improve the accuracy of classification and to reduce the dust content of the environment by creating a closed circulation of the air flow, it is equipped with a curved pipe connecting the axial hole of the rotor with the under-grid space, holes in the cylindrical part of the curved groove and pipelines connecting these holes with the beginning of the perforated area. 1260043 A 2