SU57717A1 - Rotary drum vacuum filter - Google Patents

Description

Rotating drum vacuum filters of continuous action are known with simultaneously operating external and internal filter surfaces divided by a dividing partition into two sections.

The inventor proposes a similar type of vacuum filter having two parallel air distribution systems and filtrate taps for the OPPORTUNITY of separate operation of the external and internal filter surfaces.

The proposed vacuum filter is intended to dewater flotation concentrates and to separate saturated solutions from a leached solid, as well as to capture sediments from the cyan process for extracting gold from ores.

In FIG. 1 shows a longitudinal section of a vacuum filter; FIG. 2 and 3 are transverse sections of it in two different planes; FIG. 4 view in plan; FIG. 5 - front view and -fig. 6- section of the spool device.

As can be seen from the drawing, the drum housing 1 from the drive with the help of the trunnion 8 rests on the main bearing 26, and from the unloading side through the bandage 24 and the crown 23,

mounted on the neck 22, - on the support rollers 25.

Above the outer side of the drum wall / reinforced outer grille 2, made of perforated metal, 1a; The filtering surface 7 (cloth or mesh) can be stretched directly onto the grid 2, as well as onto the wooden mattresses 3, which are grooved on the outside and have through holes in the valleys of the flute for the passage of the filtrate.

On the inner side of the drum wall / there is a similar device with an inner grille 4 and mattresses 5. The mattresses 5 and 5 are attracted by means of bolts 6 welded to the wall /.

The pulp is fed through pipe 36; for discharging the filtrate from the external cavity, there are tubes 10; from the inner tube 11; these latter tubes connect the vacuum cavities under the mattresses 5 and 5 through the trunnion channels 5 and the spool device with a pipe for draining the filtrate 20 and a blowing pipe 21.

To prevent the pulp from settling in the trough 27, an agitator 28 is provided, having a drive 29 from the filter drive / 5 reducer; the stirrups 28 are mounted in guides 9 located on the trunnion 8 and the neck 22.

To release the filtered sediment with the filter surface injected, VOE 39 is used in the inner conveyor 32, mounted on the supporting beam 30 and the frame with the platform 31.

The sludge can be discharged from the outer surface using a scraper 37 onto a conveyor 55 having a common drive 34 with a conveyor 32: The conveyors can be turned off independently of each other through the turn-on clutches 35.

Under the conveyor 55, a tray 38 is provided for supplying residual material to the trough 27 from the lower belt branch.

The filter can be unloaded from the outside by any other scheme.

The supporting platform and the conveyor 55 inside the drum beam 30 are made in the form of a pipe with rectangular flanges 40 welded to it to connect the platform and the conveyor 55. On the drive side of the filter, a supporting axis 4J is embedded in the pipe 56 (beam), the bearing hole of which has a bearing hole roller bearing 42, seated in the socket, located in the trunnion 8. The latter has two concentrically arranged rows of vacuum and blowout channels, which allow separate operation of the inside and the inside cavities of the filter drum; accordingly, the spool rings are arranged 13.

The throat / 2 is mounted on the guide cup 14, fastened in the undercut of the trunnion 5, and is pressed against the spool rings / 5 by means of pressure springs 15, mounted on the tension bolt 16, screwed into the end of the supporting axis 41. The neck 12 has an appropriate air distributor for blowing -43 and for stripping - 44, as well as two outlet sleeves 20 for the filtrate, respectively, coming from two cavities - external and internal.

The filter of the proposed design makes it possible to process simultaneously two different materials and to obtain two different filtrates.

The subject matter of the invention.

Claims (2)

1. Rotating drum vacuum filter of continuous action, with simultaneously operating external and internal filtering surfaces, separated by a dividing partition into two sections, characterized by the use of axle 8 and neck 12, having two parallel air distribution systems and filtrate outlets to allow separate operation of external and internal filtering surfaces . 2. The form of the filter according to claim 1, characterized in that, in order to fasten the neck 12 of the valve, pressure springs 15, tension bolt 16 and support axis 4 are used. to the author's testimony of M. A. Karpov No. 57717 Fig5