SU856497A1 - Disc-type vacuum filter sector - Google Patents

Description

(54) DISC VACUUM FILTER SECTOR

I

The invention relates to devices for dewatering finely divided materials, mainly ore concentrates or coal, in particular to the designs of vacuum disk filter sectors, and can be used in mining, coal and other mineralization fields.

Known sector disk vacuum filter, including deck with a drainage base and filter cloth 1.

A disadvantage of the known sector is that the drainage base imparts a curved surface of the filter cloth in only one plane.

The purpose of the invention is to intensify sludge dewatering by creating a curvilinear filtering surface in different planes and improving the regeneration process.

The goal is achieved by the fact that in the sector of a disk vacuum filter, including a deck with a drainage base and filter cloth, the drainage base is made in the form of helical springs.

FIG. 1 shows a sector, a general view; in fig. 2 is a view A of FIG. one; in fig. 3 is a section BB in FIG. 1 (under the action of ba2

Kuum); in fig. 4 is a sectional view in FIG. 1 (under the action of vacuum).

The disk vacuum filter sector includes a base 1 made of coil springs 2 of various lengths attached to deck 3 one after the other. The base of the tensioned filtering fabric 4 is formed on the bottom of the sector formed by the springs 2 and deck 3. In the lower part of the sector there is a nozzle 5 for the filtrate.

When the vacuum filter is operating under a vacuum, filter cloth 4,

10 adjacent to the outer surfaces of the springs 2, forms a curved drainage surface.

When the sector is immersed in the suspension on the surface thus formed

15 there is a set of sediment. The removal of moisture from the sediment on such a surface with a vacuum substance occurs in different directions and planes. After the vacuum of the sediment, a compressed air is supplied to the sector

head, under which the filter cloth 4 separates from the surface of the springs 2 and forms a vacuum surface. When this occurs, the discharge of sediment.

Experiments carried out in laboratory and industrial conditions, found that on a curved surface formed by a flat curve, with the same specific productivity, the moisture content of the sediment is 0.5-1 ° / o lower than the moisture content of the sediment on a flat curve. With the same sludge moisture, the productivity on a curved surface increases by about 20%.

Compared with a curved surface formed by a flat curve, the base of the sector on the helical springs by increasing the active filtering surface will intensify the process of sludge dewatering with the same specific productivity, or increase productivity with the same humidity.

f

In addition, the filtering surface, thus increased, under the action of compressed air significantly increases its convexity, thereby increasing the efficiency of sediment unloading.

Claims (1)

Invention Formula A disk vacuum filter sector comprising a deck with a drainage base and filter cloth, characterized in that, in order to intensify sludge dewatering and improve the regeneration process, the drainage base is in the form of helical springs. Sources of information taken into consideration during the examination 1. Goldberg Yu. S. and others. Processes and equipment for the dehydration of ores. M., “Nedra, 1977, p. 38--39.