SU1764625A1 - Dust and powder vacuum sweeper - Google Patents

Abstract

Use: when cleaning waking up powders, for example, precious metals and their dusting. SUMMARY OF THE INVENTION: A vacuum cleaner comprises a booster mounted in an housing, made in the form of an ejector, a suction hose with an adapter, a filter made in the form of a cyclone, a dust receiver and a powder receiver. The cyclone outlet is connected to the mixing chamber of the ejector. A replaceable porous ring insert is installed in the inlet of the cyclone, the cavity of which is connected to the cavity of the powder receiver by means of a channel. The powder receiver is installed under the insert, the dust receiver is installed under the cyclone, and the suction hose is connected to the cavity of the insert. 2 Il.

Description

The invention relates to harvesting machinery, in particular, to means for cleaning spillage of powders, for example precious metals, and their dust removal.

The purpose of the invention is to increase the efficiency of separation of powder and dust.

FIG. 1 schematically shows the proposed device; in fig. 2 is a section A-A in FIG. one.

The vacuum cleaner includes a housing 1, in which an ejector 2 with an active nozzle 3 and a mixing chamber 4 is installed, to which the central tube 5 of the cyclone 6 is connected, the housing of which contains a conical section 7 and the upper part 8. In the upper part 8 there is a replaceable annular porous insert 9, manufactured, for example, by powder metallurgy methods, under which a channel 10 is located for connecting the insert cavity with the receiver 11 of the coarse fraction of powder 12. Between the inlet 8 and the conical

7 parts of the cyclone is located separating the flange 13, Under the cyclone 6 a receiver 14 of the fine fraction 15 is installed. In the inlet part 8 of the cyclone 6 there is a tangentially installed nozzle 16 for supplying atmospheric air and a nozzle 17 (in Fig. 2 the nozzle installation zone is dated connect the suction hose 18 with the nozzle 19.

The vacuum cleaner works as follows.

When compressed air is supplied to the nozzle 3 in the mixing chamber 4 of the ejector 2 and the central pipe 5 of the cyclone 6, a vacuum is created, under the action of which atmospheric air flows through the nozzle 16 and the suction hose 18 with the nozzle 19 to the inlet part 8 of the cyclone 6. Vortex air flow through pipe 16 (shown by arrow 20 in Fig. 2) is divided into a plurality of vortex flows (arrows 21 in Fig. 2) passing through the pores of the insert 9 and

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forming a vortex flow (arrow 22 in Fig. 2) in the space bounded by the inner surface of the insert 9.

The air flow through the suction hose 18 by the air inlet 19, transporting the powder and dust to be removed, delivers the initial fraction to the space bounded by the inner surface of the insert 9, where the initial fraction under the action of the vortex flow 22 forms a suspended dust and powder particles that are aerodynamically centrifugal force.

 This dust particles are ejected from the rotating ring by the action of aerodynamic force from the streams 21 and directed to the axis of the device, and the heavier powder particles are ejected by the centrifugal force to the inner surface of the insert 9, where they are braked, collected from the shoulder 13 and fall the receiver 11 of the coarse fraction 12. The dust particles, while continuing to vortex, move along the conical part 7 of the cyclone 6 in the direction of the receiver 14 of the fine fraction, where they are collected.

At the end of the cleaning process, the supply of compressed air is stopped,

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undocking of receivers 11 and 14, their unloading and cleaning, after which the device is again ready to work.

Replaceable insert 9, due to the varying degree of porosity, ensures the separation of fractions of the harvested material of different sharpness.

Claims (1)

Invention Formula Vacuum cleaner for cleaning dust and powder, containing a push-in booster mounted in the housing, suction hose, nozzle, filter made in cyclone zide, output the pipe of which is connected to the mixing chamber of the ejector, the dust receiver and the powder receiver, characterized in that, in order to increase the efficiency of the separation of powder and dust, it is equipped a replaceable porous ring insert installed in the inlet part of the cyclone and covering its outlet nozzle, and a channel for connecting the insert cavity with the powder receiver cavity, the powder receiver is installed under the insert, the dust receiver is installed under the cyclone, and the suction hose is connected to the cavity of the insert. nineteen 27 17 eight F1 / 8.2