CN206334558U - A kind of well mixed venturi mixer - Google Patents

Abstract

A uniformly mixed Venturi mixer, comprising 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 are arranged at the upper end of the mainstream fluid throat pipeline and connected with it The connected introduction fluid introduction pipe is characterized in that: only the inner wall of the throat pipe of the mainstream fluid has a built-in semicircle structure, a total of 6, the same size and evenly arranged on the inner wall of the throat pipe of the mainstream fluid; every adjacent two semicircle The intersecting parts of the built-in structures constitute tip protrusions; the introduction pipe is provided on one of the tip protrusion parts. The utility model can effectively enhance the disturbance in the pipe under the condition of increasing the flow area as much as possible, promote the uniform mixing of the fluid, and avoid the energy loss caused by the excessive flow resistance.

Description

A venturi mixer for uniform mixing

technical field

The utility model belongs to the technical field of Venturi mixers, in particular to a Venturi mixer for uniform mixing.

Background technique

Venturi mixer is an important gas-liquid or liquid-liquid mixing device, which is widely used in engineering practice. A common Venturi mixer is composed of a classic Venturi tube and an inlet pipe arranged on the side of the throat. The mainstream fluid flows through the classic Venturi tube and generates negative pressure at the throat. The introduction tube is sucked into the mainstream fluid in the throat, and the introduction fluid is mixed with the mainstream fluid by using the pressure difference between the two fluids. In the existing Venturi mixer, due to the effect of the boundary layer at the wall surface of the fluid channel, the disturbance intensity of the mixed fluid is small, which easily causes the problems of uneven mixing and low mixing efficiency.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, the purpose of this utility model is to provide a new type of Venturi mixer with enhanced disturbance in the pipe and low flow resistance, which can improve the uniformity and mixing efficiency of the mixed fluid in the pipe.

In order to achieve the above object, the technical solution adopted in the utility model is:

A uniformly mixed Venturi mixer, comprising a mainstream fluid inflow pipeline 1, a mainstream fluid constriction section 2, a mainstream fluid throat pipeline 3, a mainstream fluid diffusion section 4, and a mainstream fluid outflow pipeline 5, which are connected in sequence and are arranged in the mainstream fluid throat The introduction fluid introduction pipe 6 on the upper pipe 3 and communicated with it is characterized in that only the inner wall of the main flow fluid throat 3 has a semicircle built-in structure 7, and the semicircle built-in structures 7 are six in total, the same size and evenly distributed in the main flow fluid On the inner wall of the throat pipe 3, the six semicircular built-in structures 7 are interconnected to form a throat pipe 3 with a petal-shaped flow section. The intersecting part of every two adjacent semicircular built-in structures 7 constitutes a tip protrusion 8 , and the introduction pipe 6 is arranged on one of the tip protrusions 8 .

The utility model has the following advantages: adding a certain built-in structure on the inner wall of the fluid channel can enhance the disturbance of the fluid at the inner wall, but also reduces the flow area of the channel and increases the flow resistance of the fluid. The semicircular built-in structure 7 adopted in the inner wall of the mainstream fluid throat pipe 3 of the utility model can effectively enhance the disturbance in the pipe under the condition of increasing the flow area as much as possible, so that the mainstream fluid and the incoming fluid are mixed evenly. The tip protrusion 8 is formed by the intersection of two adjacent semicircular built-in structures 7. The two sides of the tip protrusion 8 are concave curves relative to the outer wall of the throat pipe 3, thus ensuring a large enough flow area and avoiding reducing the flow rate as much as possible. Excessive flow resistance at the expense of area. At the same time, the tip protrusion 8 can disturb the fluid flowing through the throat, solve the problem of uneven mixing caused by the slow fluid velocity near the wall of the traditional mainstream flow channel, and enhance the mixing effect in the mainstream Venturi tube; The flow channel formed by structure 7 is a smooth curve except for the protruding part of the tip, which can greatly reduce the flow resistance of the fluid, thus effectively avoiding the energy loss caused by excessive flow resistance; the semicircular built-in structure 7 It is a cylindrical internal section structure in the throat, which is easy to process.

Description of drawings

Fig. 1 is the structural representation of the utility model Venturi mixer.

Fig. 2 is a sectional view of the venturi tube throat of the main flow of the Venturi mixer of the utility model.

detailed description

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, a Venturi mixer with uniform mixing of the utility model includes a mainstream fluid inflow pipeline 1, a mainstream fluid constriction section 2, a mainstream fluid throat pipeline 3, a mainstream fluid diffuser section 4 and a mainstream fluid that are sequentially connected. An outflow pipe 5 and an incoming fluid introduction pipe 6 arranged on and communicated with the main flow fluid throat pipe 3 .

As shown in FIG. 2 , the inner wall of the mainstream fluid throat pipe 3 has semicircular built-in structures 7 . As a preferred embodiment of the present invention, there are six semicircular built-in structures 7 in total. The semicircular built-in structures 7 have the same size and are evenly arranged on the inner wall of the mainstream fluid throat pipe 3. The tip protrusions 8 and the semicircular built-in structures 7 are alternately arranged, wherein the tip protrusions 8 are formed by the intersection of two adjacent semicircular built-in structures 7 . The two sides of the tip protrusion 8 are concave curves relative to the outer wall of the throat pipe 3, thus ensuring a large enough flow area. At the same time, the flow channel formed by the semicircular built-in structure 7 is a smooth curve except for the protrusion, which greatly reduces The energy loss caused by excessive flow resistance is eliminated.

The tip protrusion 8 can enhance the turbulence of the fluid near the inner wall surface of the throat pipe 3 of the mainstream Venturi tube, and promote the uniform mixing of the fluid. The closer the fluid velocity is to the central axis in the circular tube, the greater the disturbance, and the introduction pipeline 6 is arranged on one of the tip protrusions 8, and the introduction fluid can be introduced at a position closer to the central axis of the mainstream fluid throat pipeline 3, which is beneficial Thorough mixing of fluids.

Claims (1)

1. a kind of well mixed venturi mixer, including the mainstream fluid flow ipe (1) that is sequentially communicated, mainstream fluid are received Contracting section (2), mainstream fluid throat pipeline (3), mainstream fluid diffuser (4) and mainstream fluid flow out pipeline (5) and are arranged on On mainstream fluid throat pipeline (3) and the introducing fluid that communicates therewith introduces pipeline (6), it is characterised in that：Only mainstream fluid Throat's pipeline (3) inwall has the built-in construction (7) of semicircle, and the built-in construction (7) of the semicircle amounts to six, and size is identical and equal The inwall of mainstream fluid throat pipeline (3) is distributed in evenly, and the built-in construction (7) of six semicircles is connected with each other composition circulation and cut Face is petal throat's pipeline (3)；Per two neighboring semicircle, the intersecting part of built-in construction (7) constitutes sophisticated projection (8), The introducing pipeline (6) is disposed therein on a sophisticated projection (8).