SU1574245A1 - Filter for separating suspensions - Google Patents

Abstract

The invention relates to filters for separating suspensions and allows for an increase in productivity by utilizing the energy of swirling streams. The filter consists of a housing 1, a filter element 2, an outer 4 and an intermediate 3 cylinder central 5 and peripheral 6 screw guides. The differential pressure on the filter element creates a swirling flow of the original suspension. 1 il.

Description

The invention relates to the chemical, medical, microbiological industry and can be used for the separation of liquid fine media.

The purpose of the invention is to increase productivity.

The drawing shows a filter, a longitudinal section.

The filter consists of a vertical cylindrical body 1, a porous filter element 2 coaxially located in the body, intermediate 3 and outer 4 cylinders, central 5 and peripheral 6 screw guides serving to tighten the slurry flow, the first of which is installed inside filter element 2, and the second - between the wall of the housing and the outer cylinder 4. The lower ends of the filter element 2 and the intermediate cylinder 3 are connected by an annular partition 7 with the formation of the chamber 89 and attached to the cylinder 3 ubok filter 9 for removal from the chamber 8 into the collecting chamber 10,

Guides 5 and 6 are made with t; ar, decreasing along the slurry motion to ensure uniform speed of swirling flows.

An impermeable shell 11 is connected to the upper end of the filtering element, the upper end of which is connected to the upper part of the outer cylinder 4 by a conical element 12, while the upper end of cylinder 4 is located above or below the upper end of the shell 11. The latter is necessary for reducing hydraulic resistance when separating the suspension.

The pipe 13 serves to supply the initial suspension, the pipe 14 to remove the filtrate and the pipe 15 to discharge the concentrate. A cavity 16 formed by the shell walls of the outer cylinder 4 and the conical element 12 serves to create a pressure differential,

The filter works as follows. The initial suspension is fed into the filter through the pipe 13, then the initial suspension is divided into two streams by cylinder 4 and fed to the guide screws 5 and 6, which twist it. Internal swirling flow

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through the cylinder 4 and the conical element 12 enters the cavity of the filter element 2 and creates a centrifugal acceleration pressure on its inner surface, in turn, inside the external swirling flow, creates a vacuum core, which creates a discharge in the chamber 8 and correspondingly on the outer side the filter element 2, due to the pressure drop, the filtration process takes place, the filtrate accumulated in the chamber 8 is removed through the nozzle 9 into the collecting chamber 10 and discharged through the nozzle 13 consume h

The use of the proposed invention will allow for a pressure drop across the filter septum and increase the filter capacity by more fully utilizing the energy of the swirling flow by 1.2-1.5 times; use a simple installation on the pipeline for filtration in the duct process.

Claims (1)

Invention Formula A filter for separating suspensions, containing a cylindrical body with nozzles for supplying suspensions and withdrawing the concentrate; a porous filter element coaxially located in the housing; a central screw guide installed therein for twisting the slurry stream and collecting chamber for the filtrate, characterized by in order to increase productivity, it is equipped with an intermediate and external impermeable cylinders located coaxially between the filter element and the wall of the housing, a peripheral screw The body is installed between the outer cylinder and the housing wall and the cylindrical shell connected to the upper end of the filter element, while the lower ends of the filter element and the intermediate cylinder are connected by an annular partition; the upper end of the shell and the upper part of the outer cylinder are connected by a conical element to the intermediate cylinder a nozzle for removal of the filtrate into the collecting chamber is attached and the guides are made in steps decreasing in the course of the suspension movement.