SU1472107A1 - Device for preparing mixtures - Google Patents

Abstract

The invention relates to devices for the preparation of a mixture and improves the quality of the product by increasing the degree of uniformity of movement. The device comprises a housing with two interconnected chambers, in the first of which a blade agitator with inclined blades is placed on the shaft. In the second chamber on the same shaft an open turbine agitator is located. The paddle mixer is made with paddles having a variable inclination angle increasing from the root to the periphery. 5 il.

Description

one

The invention relates to the field of mixing and can be used in the chemical, food and other industries. ,

The purpose of the invention is to improve the quality of the product by increasing the degree of uniformity of mixing.

FIG. 1 shows a device for preparing a mixture, a longitudinal section; in fig. 2 - distribution of flow rates at the root of the blade of a blade machine; in fig. 3 - the same, at the periphery of the blade of the blade machine; in fig. 4 - the same, at the root of the blades of the turbine locomotive; in fig. 5 - the same, at the periphery of a blade of a turbine agitator.

The device comprises a housing 1, tongs for supplying fuel 2 and water 3, the first chamber 4 is placed in the housing, in which a six-blade pressure agitator 6 is installed on the shaft 5 with a variable blade angle increasing from the root to the periphery. In the peripheral part of the chamber in the partition 7 there are tangentially directed holes 8, communicated with

SL

the second chamber 9, where the turbine agitator 10, fitting II, is installed on the same shaft with the blade one, is open Reflective partitions can be installed in the second chamber.

The device works as follows.

Fuel and water through nozzles 2 and 3, respectively, enter the first pre-mixing chamber 4 in the required proportion. A six-blade, with an angle of inclination of the blade, increasing in length, the injection mixer 6, mounted on shaft 5, performs preliminary mixing and crushing of media, and through tangentially directed holes 8 in the partition 7, the mixture is fed into the second chamber 9, where on the same shaft with the mixer 6, an open turbine agitator 10 is installed operating in the bubble cavitation mode. Bubbles form in the region of the turbine agitator with a certain decrease in pressure on the back surface of the blade. The uniform erosion-destructive effect of cavitation throughout the chamber volume leads to intense crushing.

four

to

water droplets and the formation of a fine water-fuel emulsion, which through the nozzle 11 exits the device.

Achieving a positive effect is due to the fact that in order to improve the quality throughout the mixing chamber in the bubble cavitation mode, it is necessary to ensure that the speed of the mixture moves along the entire length of the blade. At a constant installation angle of the blade of the blade meralevel of absolute velocities at the root Cin Uk-ctg K and at the periphery, X Xc (i.e., Uk-ctg k Un. This determines the ratio between the radius of the blade and the angles of the installation at the root and the periphery

cfg k-ctg Ua / U,

R

rk

Increase in relative speed

The relative shi and absolute speed of the root of the blade allows the height of the CIK at the root to be significantly less than the degree of uniformity of mixing.

at the periphery. As a result, at the root of the blade of the turbine mixer the relative speed and the absolute speed C2k of the fluid movement will be less than that of the periphery. Ta-.; - KIM, the effect of pressure decrease in the mode of bubble cavitation at the root is weaker than at the periphery of the Blade, respectively, the quality of mixing at the root

Claims (1)

throughout the volume of the camera device. Invention Formula lower than the periphery. A device for preparing a mixture, comprising a housing with two interconnected chambers, in the first of which a paddle stirrer with inclined blades is placed on the shaft, and in the second - The blade with variable 20 is located on the same shaft open angle of inclination (3 along the length allows for a turbine stirrer, characterized in that the relative and absolute velocity of the root is changed. With decreasing p-y angle root and constant peripheral speed f / x in order to improve the quality of the product by increasing the degree of uniformity of mixing, the paddle stirrer is made with the relative and absolute blades, which have a variable speed (ok and Ci), increase. The ratio between the angle of the slope, increasing from the roots at the root and the periphery, is determined from the periphery. equality of absolute velocities at the root Cin Uk-ctg K and at the periphery, X Xc (i.e., Uk-ctg k Un. This determines the ratio between the radius of the blade and the installation angles at the root and the periphery cfg k-ctg Ua / U, R rk Increase in relative speed The blades allow for a high degree of uniformity of mixing.  the root of the blade allows to provide some degree of uniformity of mixing throughout the volume of the camera device. Invention Formula A device for preparing a mixture, comprising a housing with two interconnected chambers, in the first of which a paddle stirrer with inclined blades is placed on the shaft, and in the second -  A turbine agitator is open on the same shaft, characterized in that. A turbine agitator is open on the same shaft, characterized in that. in order to improve the quality of the product by increasing the degree of uniformity of mixing, the paddle stirrer is made with Phi.1 but ig.  fH t / With an  f / i Cffi Ying g / ;; fiag srie.Z Yu Ojzh C2H figl 2/7 S2P g // 7 FIG. five