SU889111A1 - Hydrocyclon - Google Patents

Description

I

The invention relates to devices for the separation of suspensions in the field of centrifugal forces, namely to hydrocyclones, and may find application in the treatment of wastewater from livestock, chemical, food and other industries.

A hydrocyclone is known, comprising a housing coaxially with an outlet chamber installed at the exit of the yellow phase with helical-shaped working surfaces placed along its axis with an inclination pro1 and opposite to the inclination of the spiral trajectory of the heavy phase. The presence of immobile working surfaces of a spiral shape with an inclination opposite to the inclination of the spiral trajectory of movement of the heavy phase, allows to finish off the creation of a pressure drop in the outlet chamber by counteracting the flow of the flow. This makes it possible to dispense with the throttling of the discharge chamber by changing its cross section and due to

This significantly improves the conditions for unloading the solid phase, which has a positive effect on the e (1x |) efficiency of the hydrocyclone 1.

However, a known hydrocyclone can work efficiently only under stable conditions: at constant flow rates of the suspension and fractions of a constant concentration

10 suspensions. Under conditions of livestock farms, where concentrations vary from 100 to 5 grams per liter according to DIA, the known hydrocyclone does not work (|) effectively. Under conditions of variable concentration of the separated wastewaters, it is necessary to change the flow rate of the heavy fraction through the outlet chamber. In the famous hydrocyclone, this can be done by changing the countercurrent flow created by the working surfaces.

Claims (1)

The aim of the invention is to increase the operating efficiency of hydrocyclone with varying concentrations of the suspension being divided. This goal is achieved by the fact that in a hydrocyclone containing a housing with a discharge chamber coaxially installed at the exit of the heavy phase with working surfaces of spiral shape placed along its axis with an inclination opposite to the inclination of the spiral trajectory of the heavy phase, according to the invention, the working surfaces are made the form of blades fixed in the discharge chamber and blades fixed on the shaft with the possibility of turning relatively fixed blades. In figure 1 there is a hydrocyclone, o general view; in fig. 2 - exhaust chamber with working surfaces, general view. A hydrocyclone includes a housing 1 with a tangentially located inlet pipe 2, an outlet pipe of a light phase 3 and an outlet hole of the heavy phase. Coaxially to body 1 at the end of the heavy phase is installed an outlet to chamber 5 equipped with working surfaces of spiral shape installed along its axis. The working surfaces are inclined oppositely relative to the trajectory of the heavy phase. They consist of blades 6 mounted on the camera body 5 and blades 7 mounted on the shaft 8. When the shaft 8 rotates while the blades 6 are axially displaced, the blades 6 are displaced relative to each other. The hydrocyclone works as follows. The suspension under pressure is fed through the inlet nozzle 2 into the hydrocyclone body 1, where it is separated into a heavy and light phase. The light phase is led out of the hydrocyclone through the nozzle 3, and the hard phase is discharged through the outlet hole k to the outlet chamber 5. When moving to the outlet, it is out. The 4 inlet chamber of the desired phase falls on the working surfaces and must thus change the direction of movement, which creates a pressure drop in the outlet chamber. If it is necessary to change the value of the pressure drop in the outlet chamber, the shaft 8 is moved, the area of interaction of the heavy phase flow with the working surfaces changes due to the fact that the area of the working surfaces changes - blades 7 or run onto the blades 6 or exit -for them. The possibility of changing the value of the pressure drop in chamber 5 without changing its cross section allows changing the flow rate of the separated heavy phase and thereby enables the hydrocyclone to work effectively under conditions of varying concentration of the suspension being separated. Claims of the invention A hydrocyclone comprising a housing coaxial with which at the exit of the heavy phase an exhaust chamber is installed with working surfaces of a spiral shape located on its axis with a slope opposite to the inclination of the spiral trajectory of movement of the heavy phase, in order to increase the performance of the hydrocyclone with varying concentrations of the split suspension, {5 the working surfaces are made in the form of blades and blades fixed on the outlet chamber fixed to the shaft with the possibility of Turns relatively fixed blades. Sources of information taken into account in the examination 1. USSR patent number 83819, cl. In Qi From 3/06, 1970.