SU1660713A1 - Film thickener - Google Patents

Abstract

The invention relates to the field of separation of suspensions and can be used in non-ferrous and ferrous metallurgy, in the chemical and other sectors of the industry for the treatment of waste water from mechanical impurities. The aim of the invention is to increase the effectiveness of the condensation of finely divided suspensions. The thin layer thickener contains a cylindrical body, a pipe to remove the drain, a collector of a condensed product, a thin layer module in the form of truncated conical plates directed smaller bases down, the central tube with longitudinal radial partitions forming sectors for draining and condensed product, connected with holes to the upper and the lower parts of the intertellational space, respectively. Inclined partitions overlap the sectors to drain the drain from the bottom, and the sectors to drain the condensed product from the top. The upper part of the central tube is connected to the nozzle for draining. Sectors are placed through one. On the plates, wedge-shaped dividers are installed under the holes connecting the drainage sectors with the inter-tray space. The proposed design makes it possible to reduce the loss of the solid phase in the discharge by 30-50% by eliminating the opposing and intersecting flows of the liquid phase and particles of the solid phase. 1 hp f-ly, 4 ill.

Description

The invention relates to the separation of suspensions and can be used in nonferrous and ferrous metallurgy, in the chemical and other sectors of the industry for the treatment of waste water from mechanical impurities.

The aim of the invention is to increase the effectiveness of the condensation of finely divided suspensions.

Figure 1 shows a finely dispersed thickener, a general view; figure 2 - section

A-Anafig, 1; nafig.Z-cutB-B figure 1; figure 4 - section bb In figure 1.

The thin layer thickener contains a cylindrical cone 1 with a nozzle 2 for removing the drain, a collection of condensed product 3 and a thin layer module installed inside the body 1, made of truncated conical plates 4 with each other 4 smaller bases down above. The axis of symmetry of the housing 1 is installed central tube 5. The upper end of the connector

ON O XI

WITH

Enna with pipe 2, and the lower end of the collection of condensed product 3. Pipe longitudinal radial septum and b is divided into sectors for drainage of condensed product and 8, placed through one. Sectors 7 are connected by openings 9 in pipe 5 to the upper parts of the space between conical plates 4. Sectors 8 are connected by openings 10 inwards 5) to 5 lower parts of the space by inter conical plates 4. Sectors 7 are rerecovered from below by inclined partitions 11, and sectors 8 - from above by inclined Partitions 12.

On the surface of the conical plates 4 with bores 9, wedge-shaped dividers 13 are installed. In the upper part of Case 1, a grid 14 is installed to trap large objects.

The device works as follows.

The initial suspension is fed from above into the cylindrical housing 1 on the grid 14 to trap large items. Through the openings in the grill 14, the slurry is jetted down. The level of suspension in the housing 1 is provided by the position of the vertices of the part of the socket 2 for removal of the drain.

The suspension in the housing 1 is distributed between the conical plates 4. When the suspension flows in the space between the conical plates 4, solid particles settle to the surface of the conical plates 4, descend over the surface and through the holes 10 enter the rectors to remove the thickened product of the central pipe 5 through which the condensed product 3 is deposited in the collection. The clarified liquid phase through the holes 9 enters the sectors for draining the drain 7 of the pipe 5, through which it is forced out into the nozzle 2 and is directed to the drain. The wedge-shaped dividers 13 direct particles of the solid phase deposited on the surface of the conical shelves 4 to the holes 10 and thereby eliminate accumulation of the solid phase under the holes 9.

The design of the proposed thin layer thickener is characterized by a high condensation efficiency of finely dispersed suspensions due to the exclusion of counter and

intersecting flows of the liquid phase and particles of the solid phase. The limiting particle size of the solid phase particles carried away into the drain is reduced by 30-50%.

Claims (2)

1. A thin layer thickener containing a cylindrical housing, a pipe for removing a drain, a collection of condensed product, a thin layer module in the form of truncated conical plates directed to a smaller base downwards, a central tube with longitudinal radial partitions forming sectors for draining drain and a condensed product connected openings in the upper and lower parts of the interbingulary space, respectively, characterized in that, in order to increase the effectiveness of thickening fine suspensions, the central tube provided with inclined partitions overlapping the sectors for drainage from the bottom, and sectors for diverting the condensed product from above, with the upper part of the central pipe connected to the nozzle to drain, and the sectors are placed through one, 2. Thickener pop. 1, characterized in that it is equipped with wedge-shaped dissectors mounted on the surface of the plates under the holes in the pipe. 0 connecting the drainage sectors with the upper parts of interlocking spaces. 1 PutJ Fy