A square Venturi mixer with a push-pull structure

Abstract

A square Venturi mixer with a push-pull structure, including a mainstream fluid inflow pipeline, a mainstream fluid constriction section, a mainstream fluid throat pipeline, a mainstream fluid diffusion section, and a mainstream fluid outflow pipeline, which are connected in sequence and arranged on the upper end of the mainstream fluid throat pipeline And the side inlet fluid inlet pipeline connected with it, the mainstream fluid inlet pipeline, the mainstream fluid throat pipeline, the mainstream fluid outflow pipeline and the inlet fluid inlet pipeline are all square pipelines, and the mainstream fluid constriction section and the mainstream fluid diffusion section are quadrangular pyramid-like structures; The mainstream fluid inflow pipe, the mainstream fluid constriction section, the mainstream fluid throat pipe, the mainstream fluid diffusion section and the mainstream fluid outflow pipe all include an upper part and a lower part, with grooves on the vertical wall surface of the upper part, and grooves on the vertical wall surface of the lower part. With ribs adapted to the shape of the groove; the invention is applicable to a wider range of flow ratios of mainstream fluid and introduced fluid, and effectively improves the mixing efficiency of continuous phase fluid and dispersed phase fluid.

Description

technical field [0001] The invention relates to a Venturi mixer, in particular to a square Venturi mixer with a push-pull structure. Background technique [0002] As an important gas-liquid or liquid-liquid mixing device, the Venturi mixer has been widely used in engineering practice. A common gas-liquid Venturi mixer is a classic Venturi tube with an opening in the throat. The mainstream fluid flows through the classic Venturi tube, and the introduced gas flows in through the opening. The introduced gas is introduced and combined with the pressure change of the two fluids. The mainstream fluid is blended. The existing Venturi mixer is composed of a fixed-sized main Venturi tube and an inlet pipe, which cannot be adjusted in size according to the flow ratio of the main flow fluid and the inlet fluid, so it is prone to the problem of low mixing efficiency. In addition, the existing Venturi mixer pipes are generally rotating bodies, and the fluid velocity near the axis is of...

AI Technical Summary

Problems solved by technology

The existing Venturi mixer is composed of a fixed-sized main Venturi tube and an inlet pipe, which cannot be adjusted in size according to the flow ratio of the mainstream fluid and the inlet fluid, so it is prone to the problem of low mixing efficiency

In addition, the existing Venturi mixer pipes are generally rotating bodies, and the fluid velocity near the axis is often faster, while the fluid velocity near the pipe wall is slower, which is unfavorable for fluid mixing.

Moreover, the rotary body has higher requirements on machining accuracy and higher cost

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