CN2222567Y

CN2222567Y - hydrocyclone

Info

Publication number: CN2222567Y
Application number: CN 95230086
Authority: CN
Inventors: 徐继润; 罗茜
Original assignee: Northeastern University China
Current assignee: Northeastern University China
Priority date: 1995-01-16
Filing date: 1995-01-16
Publication date: 1996-03-20
Anticipated expiration: 2005-01-16

Abstract

A hydrocyclone of the utility model belongs to the equipment for solid-liquid separating, grading and sorting. The utility model is composed of an overflow pipe, a feeding pipe, a column body section, an underflow outlet and a cone body section. The overflow pipe is inserted in the column body section, and the feeding pipe is arranged along the tangential direction of the side wall of the column body section. The utility model is characterized in that the exterior of the overflow pipe is provided with a housing. The upper part of the housing is a barrel body, and the lower part is a curved surface whose surface is inwards concave. The hydrocyclone of the structure obviously reduces the flow quantity of the short circuit, the vortex loss of a pre-separation zone and the original enlargement loss. The shape of the curved surface of the lower end of the overflow pipe fits to distribution of the solid material in the hydrocyclone. The utility model is favorable to graded fine particles enter the overflow as quickly as possible and can improve the separating precision or the grading precision.

Description

A kind of hydrocyclone

The utility model hydrocyclone belongs to a kind of Separation of Solid and Liquid, classification and screening installation.

Common hydrocyclone is made up of feed pipe, overflow pipe, cylinder part and conical section, and wherein overflow pipe is tubular and inserts the cylinder part, and its effect is to reduce short-circuit flow.But the short circuit flow rate in this according to the study cyclone still accounts for about 20% of total flow, and therefore this cyclone classification or separative efficiency are still not high.

The purpose of the utility model hydrocyclone is more effectively to reduce short-circuit flow, classification efficiency is further improved.

The utility model hydrocyclone is realized by following scheme: hydrocyclone is made of overflow pipe, feed pipe, cylinder part and underflow outlet, conical section, overflow pipe inserts the cylinder part, feed pipe is along the tangential direction setting of cylinder part limit wall, it is characterized in that being provided with outside overflow pipe a case, the top of this case is divided into cylindrical shell, the bottom is the curved surface of concave surface.

The utlity model has following advantage:

1, flows through under the prerequisite that the path does not shorten even slightly prolong at short-circuit flow, shortened the length in a lid boundary layer greatly, the short circuit flow rate that enters overflow is significantly reduced;

2, reduced the little volume of presorting abscission zone (being the zone between overflow pipe outer wall and post jamb) of cyclone work influence, made the dicyclo eddy current of original existence be condensed to monocycle stream, reduced the eddy current loss of presorting the abscission zone;

3, because the interval of overflow pipe outer wall and barrel narrows down to quite with the size that enters the mouth, so reduced original inlet enlargement loss;

4, the solid material in the curve form of overflow pipe lower end and the cyclone distributes and adapts, and helps classified fine grained and enters overflow as early as possible;

5, in the cone zone below newly-designed overflow pipe, have the axial zero-speed envelope of wedge shape wide at the top and narrow at the bottom district, this axial zero-speed district compares with the axial zero-speed enveloping surface in the conventional hydrocyclone, can improve the accuracy of separation or classification.

Accompanying drawing 1 is the structural representation of the utility model hydrocyclone.

Below in conjunction with accompanying drawing the utility model is described further:

As shown in Figure 1, this hydrocyclone is made up of overflow pipe (2), feed pipe (1), cylinder part (4), conical section (5) and underflow outlet (6), wherein overflow pipe (2) inserts cylinder part (4), feed pipe (1) is along the tangential direction setting of cylinder part (4) limit wall, above-mentioned part is similar to traditional cyclone, characteristics of the present utility model are to be provided with a case (3) outside overflow pipe (2), the top of this case (3) is divided into cylindrical shell, the bottom is divided into the curved surface of concave surface, and this curved surface can be formed along the rotation of cyclone axis by parabola.

The utility model in the course of the work, the solidliquid mixture material enters cylinder part (4) by feed pipe (1), under the effect of centrifugal force field, small and light particle is discharged from overflow pipe (2), massive particle is discharged by underflow outlet (6).Because the existence of overflow pipe case (3) reduces the short-circuit flow that is produced greatly.

Claims

1, a kind of hydrocyclone, it is made of overflow pipe, feed pipe, cylinder part and underflow outlet, conical section, overflow pipe inserts the cylinder part, feed pipe is along the tangential direction setting of cylinder part limit wall, it is characterized in that being outside equipped with the overflow pipe case at overflow pipe, the top of this overflow pipe case is divided into cylindrical shell, the bottom is the curved surface of concave surface.

2, hydrocyclone as claimed in claim 1 is characterized in that the inner sunken face of the lower part of overflow pipe case is formed around the rotation of cyclone axis by a parabola.