SU1443969A1 - Centrifugal separator - Google Patents

Abstract

The invention relates to devices for aerospace separation and can be used in the energy, cement and building industries. The purpose of the invention is to ensure efficient operation of the separator for systems with fine and coarse grinding by changing the cross section of the vortex chamber. The outlet pipe 3 of the separator consists of two, mobile and stationary, parts. The movable part, consisting of shells 8 and 9, connected at the lower edges by a truncated cone 11, is placed in the annular chamber 6 with the possibility of movement. Lowering the shell 8 and 9, you can partially overlap the cross section of the vortex chamber, thereby changing the separation mode. 2 Il.

Description

(L

with

four

WITH

; about and with

The invention relates to devices for the separation of aerospace and can be used in the energy sector of the cement and construction industries.

The purpose of the invention is to ensure efficient operation of the separator for systems with fine and coarse grinding by changing the cross section of the vortex chamber.

FIG. 1 shows a separator with a maximum section of the vortex chamber, a general view; in fig. 2 - the same, with the minimum section of the camera.

The centrifugal separator contains a housing 1 with a rivet 2 having an upper axial outlet nozzle 3. In case I there is a vortex chamber in the form of a reverse cone 4 with a closure apparatus 5 of the rotating blades. On the lid 2, the annular chamber 6 is coaxial to the outlet nozzle 3. The output nozzle 3 is made up of two parts concentrically arranged, of which 7 are fixed, and the outside consists of two shells, a shell 8, adjacent to the outer surface of the fixed part 7, and shell 9, adjacent to the inner surface, chamber 6. The cylindrical shell 8 and 9 are connected at the top by plates 10, and their lower edges are connected by a truncated cone 1 1 The outer part of the outlet pipe 3 is placed in chamber 6 with the possibility of The rooms are equipped with, for this purpose, rods 12 with nuts 13, and in the plates 10 there are corresponding threaded holes. Cone 4 has a nozzle 14 outlet return.

When the separator is in operation, a mixture is fed into the gap between the housing I and the cone 4. The largest particles are separated in the gap by the action of gravitational forces, and the main flow of the dust-air mixture is directed to the blade apparatus 5, where it is twisted. The thickness of the dust produced by the separator is adjusted by the angle of rotation of the blades: to obtain coarse dust, the blades are set in a position close to the radial, to thin the grinding they are pressed to the periphery of the cone 4. In order to get a uniform particle size during both the coarse and fine grinding

Q

five

0 5 o

5 Q 5

five

0

(dust uniform constant P5: 1.0), the movable part of the outlet-t-nozzle is used.

In order to obtain coarse dust, the shells 8 and 9 are fully pushed into to the aerial 6. In this case, the cross section between the vane apparatus and the fixed part 7 of the outlet nozzle 3 has a maximum size. Therefore, the component of the particle velocity, directed vertically downwards, is small, and the swirling dusty air flow fills only the upper part of the cone 4. With this flow separation in the cone 4 of the vortex chamber, there is an intensive separation of mainly large particles. Smaller particles, the mass and, correspondingly, the amount of movement of which is less, leave through the pipe 2 with the air from the separator.

When fine grinding the shell 8 and 9 using t g 12 is lowered. The cross section between the exhaust pipe and the blade apparatus is smaller, therefore, the vertical component of the velocity of the particles in the cross section becomes higher and the twisted blades dusty air flow fills almost the entire cone 4 of the vortex chamber, which contributes to effective separation in the cone 4 not only large, but relatively small particles larger than required.

The proposed separator ensures efficient operation on the same machine with fine and coarse grinding, since it results in a uniform particle size distribution.

Claims (1)

Invention Formula A centrifugal separator, comprising a housing with a lid, a vortex chamber coaxially placed in it in the form of a reverse cone with an annular twisting device of rotating blades and a return outlet branch pipe. In the lower part, an upper axial outlet branch pipe made of two concentric parts, internally fixed , and external with the possibility of movement in an annular chamber located on the cradle, characterized by that, in order to ensure efficient operation of the separator for systems with thin and rough through change 13  6 srag.2