CN203061076U - Multipoint introduction structure of Venturi mixer - Google Patents

Abstract

A multi-point introduction structure of a Venturi mixer, comprising a plurality of introduction pipes in communication with the Venturi throat of the mainstream Venturi tube; The first introduction pipe, the second introduction pipe, the third introduction pipe and the fourth introduction pipe are arranged at 90° to each other in the section, or the first introduction pipe and the second introduction pipe are arranged at the upper end of the Venturi throat, and the lower end The third introduction pipe and the fourth introduction pipe are arranged, and the first introduction pipe and the second introduction pipe are asymmetrically arranged in a staggered arrangement with the third introduction pipe and the fourth introduction pipe; Introduce fluid for flow control; it can strengthen the mixing of the introduced fluid and the mainstream fluid, and improve the mixing efficiency of the Venturi mixer; its flow control method can adjust the fluid flow at different introduction points, making the Venturi mixer suitable for a wider range of introduction The flow ratio of the fluid to the mainstream fluid.

Description

A Multipoint Introduction Structure of Venturi Mixer

technical field

The utility model relates to the technical field of Venturi mixers, in particular to a multi-point introduction structure of a Venturi mixer.

Background technique

As an important gas-liquid or liquid-liquid mixing device, the Venturi mixer is widely used in engineering practice. A common Venturi mixer is a classic Venturi tube with an opening in the throat. The mainstream fluid flows through the classic Venturi tube, and the incoming fluid flows in through the opening. Blended. In the existing Venturi mixer, the incoming fluid is introduced through one place. In this Venturi introduction structure, the flow rate and position of the introduced fluid cannot be adjusted, and if the flow rate of the mainstream fluid is low or the flow rate of the introduced fluid is large, problems such as uneven mixing and low mixing efficiency may easily exist.

Utility model content

In order to solve the above-mentioned problems in the prior art, the purpose of this utility model is to provide a multi-point introduction structure of a Venturi mixer, which can strengthen the mixing of the introduced fluid and the mainstream fluid, and improve the mixing efficiency of the Venturi mixer; The flow control method can adjust the fluid flow at different introduction points, making the Venturi mixer suitable for a wider range of flow ratios between the introduction fluid and the mainstream fluid.

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

A multi-point introduction structure of a Venturi mixer, including a main flow Venturi tube through which the main flow fluid flows, and also includes a plurality of introduction points through which the introduction fluid communicates with the Venturi throat 3 of the main flow Venturi tube. Tube.

The arrangement of the plurality of introduction pipes is as follows: the first introduction pipe 6, the second introduction pipe 7, the third introduction pipe 8 and the fourth introduction pipe are arranged at 90° to each other in the same cross section of the venturi throat 3. The pipe 9 , the first introduction pipe 6 , the second introduction pipe 7 , the third introduction pipe 8 and the fourth introduction pipe 9 all communicate with the venturi throat 3 .

The arrangement of the plurality of introduction pipes is as follows: a first introduction pipe 6 and a second introduction pipe 7 are arranged at the upper end of the Venturi throat 3, and a third introduction pipe 8 and a fourth introduction pipe 9 are arranged at the lower end, so The first introduction pipe 6 and the second introduction pipe 7 are asymmetrically staggered with the third introduction pipe 8 and the fourth introduction pipe 9 .

The first introduction pipe 6, the second introduction pipe 7, the third introduction pipe 8 and the fourth introduction pipe 9 communicate with the venturi throat 3 through the opening of the venturi throat 3, the opening of the opening The structure is composed of a tapered section 10 on the side near the outer wall and a straight pipe section 11 on the side near the inner wall. The tapered section can increase the introduction speed of the introduced fluid and facilitate the mixing of the fluid.

The mainstream Venturi tube includes a Venturi tube inflow pipeline 1 , a Venturi tube constriction section 2 , a Venturi tube throat 3 , a Venturi tube diffuser section 4 and a Venturi tube outflow pipeline 5 which are connected in sequence.

The main flow venturi tube and the multiple introduction tubes are all rotary bodies.

The flow control method of the multi-point introduction structure of a Venturi mixer described above adopts the pulse introduction method to control the flow of the introduction fluid in a plurality of introduction pipes, specifically:

Pulse 1: the first introduction pipe 6 and the third introduction pipe 8 have flow, the second introduction pipe 7 and the fourth introduction pipe 9 have no flow;

Pulse 2: the first introduction pipe 6 and the third 8 have no flow, the second introduction pipe 7 and the fourth introduction pipe 9 have flow;

Pulse 3: the flow rate of the first introduction pipe 6 and the third introduction pipe 8 is large, and the flow rate of the second introduction pipe 7 and the fourth introduction pipe 9 is small;

Pulse 4: the flow rate of the first introduction pipe 6 and the third introduction pipe 8 is small, and the flow rate of the second introduction pipe 7 and the fourth introduction pipe 9 is large;

Pulse 5: The flow rate of any inlet pipe is large, and the flow rate of the other three inlet pipes is small.

The pulse 1, pulse 2, pulse 3, pulse 4 and pulse 5 can be continuously alternately repeated in any order.

Compared with the prior art, the utility model has the following advantages:

The multi-point introduction structure and flow control mode of the Venturi mixer of the utility model can make the introduction fluid be introduced from different positions of the throat of the mainstream Venturi pipe, and the mixing effect of the mainstream fluid and the introduction fluid is enhanced in space, four points The hedging introduction method makes the mainstream fluid in the same cross-section hedge and mix with the incoming fluid jet at different positions, which can effectively avoid the phenomenon of uneven mixing; while the jets generated by the incoming fluid at different positions can affect each other and enhance the disturbance. function, improve the mixing efficiency of the Venturi mixer; the flow control mode of the utility model Venturi mixer adopts the pulse introduction mode, which enhances the mixing effect of the mainstream fluid and the introduction fluid, and the continuous alternating and repeated operation of the introduction scheme further enhances the The mixing efficiency of the Venturi mixer; at the same time, the introduction scheme can change the flow rate according to the needs, expanding the scope of application of the same Venturi mixer; the special opening structure of the Venturi tube throat uses the Venturi principle again, which can effectively improve The fluid flow rate is introduced to improve the mixing efficiency; all components are rotary bodies, which are easy to process.

Description of drawings

Fig. 1 is a schematic cross-sectional view of a multi-point introduction structure of a Venturi mixer according to an embodiment of the present invention.

Fig. 2 is a side view of a multi-point introduction structure of a Venturi mixer according to an embodiment of the present invention.

Fig. 3 is a schematic cross-sectional view of the multi-point introduction structure of the Venturi mixer in the second embodiment of the utility model.

Fig. 4 is a side view of the multi-point introduction structure of the Venturi mixer in the second embodiment of the utility model.

Fig. 5 is a partial schematic view of the entrance of the throat introduction pipe of the multi-point introduction structure of the Venturi mixer in Embodiment 1 and Embodiment 2 of the utility model.

Fig. 6 is a schematic diagram of the turbulence of the multi-point introduction structure of the Venturi mixer according to the embodiment of the present utility model.

Fig. 7 is a schematic diagram of the turbulence of the multi-point introduction structure of the Venturi mixer in the second embodiment of the utility model.

Detailed ways

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.

Embodiment one

As shown in Figure 1 and Figure 2, the multi-point introduction structure of a Venturi mixer in this embodiment includes a mainstream Venturi tube through which the mainstream fluid flows, and the mainstream Venturi tube includes successively connected Venturi tube inflow pipes 1, Venturi tube tapering section 2, Venturi tube throat 3, Venturi tube diffusion section 4 and Venturi tube outflow pipeline 5; also includes the venturi tube throat 3 that communicates with the main flow venturi tube A plurality of introduction pipes through which the introduction fluid flows, the arrangement of the plurality of introduction pipes is: in the same cross-section of the Venturi throat 3, they are arranged at 90° to each other, the first introduction pipe 6, the second introduction pipe 7. Both the third introduction pipe 8 and the fourth introduction pipe 9 communicate with the venturi throat 3 . The incoming fluid is introduced from different positions in the throat of the mainstream Venturi tube, which enhances the mixing effect of the mainstream fluid and the incoming fluid. Effectively avoid the occurrence of uneven mixing; the arrangement of multiple inlet pipes can affect each other, and the jets generated by the fluids introduced from different positions can enhance the disturbance effect and improve the mixing efficiency of the Venturi mixer. In this embodiment, the turbulent flow shown in FIG. 6 can be generated between the jets, and the mixing effect of the Venturi mixer can be enhanced.

As shown in Figure 5, as a preferred solution of this embodiment, the first introduction pipe 6, the second introduction pipe 7, the third introduction pipe 8 and the fourth introduction pipe 9 and the Venturi tube throat 3 pass through the Venturi tube The openings of the throat 3 are connected, and the structure of the opening is formed by connecting a section of tapered section 10 on the side near the outer wall and a section of straight pipe section 11 on the side near the inner wall. The special opening structure utilizes the Venturi principle again, which can effectively increase the flow rate of the introduced fluid and improve the mixing efficiency.

As shown in Fig. 1 and Fig. 2, as a preferred solution of this embodiment, the main flow venturi tube and the plurality of introduction tubes are all rotating bodies, which is convenient for processing.

Embodiment two

As shown in Figure 3 and Figure 4, the multi-point introduction structure of a Venturi mixer in this embodiment includes a mainstream Venturi tube through which the mainstream fluid flows, and the mainstream Venturi tube includes successively connected Venturi tube inflow pipes 1, Venturi tube tapering section 2, Venturi tube throat 3, Venturi tube diffusion section 4 and Venturi tube outflow pipeline 5; also includes the venturi tube throat 3 that communicates with the main flow venturi tube A plurality of introduction pipes through which the introduction fluid flows, the arrangement of the plurality of introduction pipes is that a first introduction pipe 6 and a second introduction pipe 7 are arranged at the upper end of the Venturi throat 3, and a third introduction pipe is arranged at the lower end 8 and the fourth introduction pipe 9, the first introduction pipe 6 and the second introduction pipe 7 are asymmetrically staggered with the third introduction pipe 8 and the fourth introduction pipe 9. The incoming fluid is introduced from different positions in the throat of the mainstream Venturi tube, which enhances the mixing effect of the mainstream fluid and the incoming fluid. Effectively avoid the occurrence of uneven mixing; the jets generated by the fluids introduced at different positions by the arrangement of multiple introduction pipes can affect each other, which enhances the disturbance effect and improves the mixing efficiency of the Venturi mixer. In this embodiment, the turbulent flow shown in FIG. 7 can be generated between the jets, and the mixing effect of the Venturi mixer can be enhanced.

As shown in Figure 5, as a preferred solution of this embodiment, the first introduction pipe 6, the second introduction pipe 7, the third introduction pipe 8 and the fourth introduction pipe 9 and the Venturi tube throat 3 pass through the Venturi tube The openings of the throat 3 are connected, and the structure of the opening is formed by connecting a section of tapered section 10 on the side near the outer wall and a section of straight pipe section 11 on the side near the inner wall. The special opening structure utilizes the Venturi principle again, which can effectively increase the flow rate of the introduced fluid and improve the mixing efficiency.

As shown in Fig. 3 and Fig. 4, as a preferred solution of this embodiment, the main flow venturi tube and the plurality of introduction tubes are all rotating bodies, which is convenient for processing.

The utility model relates to a flow control method of a multi-point introduction structure of a Venturi mixer, which uses a pulse introduction method to control the flow of the introduction fluid in a plurality of introduction pipes, specifically: pulse one: the first introduction pipe 6 and the third introduction pipe The introduction pipe 8 has flow, the second introduction pipe 7 and the fourth introduction pipe 9 have no flow; pulse 2: the first introduction pipe 6 and the third 8 have no flow, the second introduction pipe 7 and the fourth introduction pipe 9 have flow; pulse Three: the flow rate of the first introduction pipe 6 and the third introduction pipe 8 is large, the flow rate of the second introduction pipe 7 and the fourth introduction pipe 9 is small; pulse four: the flow rate of the first introduction pipe 6 and the third introduction pipe 8 is small, and the flow rate of the second introduction pipe Pipe 7 and the fourth inlet pipe 9 have a large flow; pulse five: any one of the inlet pipes has a large flow, and the remaining three inlet pipes have a small flow. The above-mentioned pulse 1, pulse 2, pulse 3, pulse 4 and pulse 5 can be continuously and alternately repeated in any order. The introduced fluid is introduced in a pulsed manner, which enhances the mixing effect of the mainstream fluid and the introduced fluid. The continuous alternating and repeated operation of the introduced scheme further enhances the mixing efficiency of the Venturi mixer; at the same time, the introduced scheme can change the flow rate according to needs and expand The scope of application of the same Venturi mixer has been extended.

Claims (6)

1. A multi-point introduction structure of a Venturi mixer, comprising a mainstream Venturi tube through which the mainstream fluid flows, characterized in that: it also includes a venturi throat (3) connected to the mainstream Venturi tube A plurality of inlet tubes through which fluid flows are introduced. 2. The multi-point introduction structure of a Venturi mixer according to claim 1, characterized in that: the arrangement of the plurality of introduction pipes is: within the same cross section of the venturi throat (3) Arrange the first introduction pipe (6), the second introduction pipe (7), the third introduction pipe (8) and the fourth introduction pipe (9) at 90° to each other, the first introduction pipe (6), the second introduction pipe (7), the third introduction pipe (8) and the fourth introduction pipe (9) are all in communication with the venturi throat (3). 3. The multi-point introduction structure of a Venturi mixer according to claim 1, characterized in that: the arrangement of the plurality of introduction pipes is: the upper end of the Venturi tube throat (3) is arranged with the first An introduction pipe (6) and a second introduction pipe (7), the third introduction pipe (8) and the fourth introduction pipe (9) are arranged at the lower end, the first introduction pipe (6) and the second introduction pipe (7) ) are asymmetrically staggered with the third introduction pipe (8) and the fourth introduction pipe (9). 4. The multi-point introduction structure of a Venturi mixer according to claim 2 or 3, characterized in that: the first introduction pipe (6), the second introduction pipe (7), the third introduction pipe ( 8) and the fourth introduction pipe (9) communicate with the throat of the Venturi tube (3) through the opening of the throat of the Venturi tube (3), and the structure of the opening is a gradual The shrinkage section (10) is connected with a section of straight pipe section (11) near the inner wall surface. 5. The multi-point introduction structure of a Venturi mixer according to claim 2 or 3, characterized in that: said mainstream Venturi tube includes a Venturi tube inflow pipeline (1), a Venturi tube progressively connected in sequence, Constriction (2), Venturi throat (3), Venturi diffuser (4) and Venturi outflow pipe (5). 6. The multi-point introduction structure of a Venturi mixer according to claim 5, characterized in that: the main flow Venturi tube and the plurality of introduction tubes are all rotators.

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