CN212819203U

CN212819203U - Venturi mixer for mixing materials with similar volumes

Info

Publication number: CN212819203U
Application number: CN202021531637.0U
Authority: CN
Inventors: 周红涛; 杨永强
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2021-03-30
Anticipated expiration: 2030-07-29

Abstract

The utility model discloses a venturi blender for close material mixing of volume, one-level venturi inlay to be established in premixing the room, and the entry end of one-level venturi is provided with the main fluid import, and the exit end of one-level venturi hangs to be established in premixing the room, and the outside end of premixing the room is provided with introduces fluid inlet, premix room and second grade venturi link to each other and the two communicates each other, and the second grade venturi has set gradually shrink tube, choke, expansion pipe from forward backward interconnect, and the end of expansion pipe is provided with the mixture export. The difficulty that the conventional Venturi tube is thick due to large volume of the introduced fluid and cannot be introduced from the throat is solved, and the mixed injection of two materials with similar volumes is realized. Because the two-stage Venturi injection is adopted, larger negative pressure can be formed, and the smooth introduction and mixing of the main fluid and the introduced fluid can be smoothly realized.

Description

Venturi mixer for mixing materials with similar volumes

Technical Field

The utility model belongs to the technical field of the material mixing equipment, concretely relates to venturi mixer for close material mixing of volume.

Background

The venturi mixer is also called as a jet mixer, and is widely applied to a gas-liquid or liquid-liquid mixing device due to simple structure and convenience in maintenance.

The common Venturi mixer consists of a Venturi tube and an introducing pipe arranged on the side face of the throat part, main flow fluid flows through the Venturi tube and is sprayed out through a high-speed nozzle to form negative pressure, and introduced liquid or gas is vertically introduced into a main pipe body under the negative pressure to be mixed with the main flow fluid. Because the introduced fluid is introduced from one side of the throat part only, when the introduced fluid amount is too large, the main fluid and the introduced fluid inlet have similar pipe diameters, the introduced fluid cannot be introduced from the throat part, and the conventional venturi cannot meet the use requirement. The quality of the operation condition of the mixer directly influences the efficiency and the daily operation cost of the mixing treatment, how to improve the mixing effect and the rotational flow shearing effect, thereby improving the mixing treatment rate and solving the problem urgently.

At present, the venturi mixer for mixing two materials with similar volumes is not available in the market, so that the important practical significance is achieved on how to develop the venturi mixer for mixing the materials with the similar volumes.

SUMMERY OF THE UTILITY MODEL

To the conventional venturi that exists among the prior art be difficult to satisfy the technical problem who introduces the operation requirement when fluid volume is too big, the utility model aims to provide a venturi mixer for the mixture of the close material of volume is an important gas-liquid or liquid-liquid mixing arrangement, the utility model discloses a two-stage venturi mixer realizes the mixture of the close material of two strands of volumes.

The utility model discloses the technical scheme who takes does:

the utility model provides a venturi mixer for close material mixing of volume, includes the two-stage venturi mixer that one-level venturi and second grade venturi constitute, the one-level venturi inlays to be established in premixing the indoor, and the entry end of one-level venturi is provided with the main fluid import, and the exit end of one-level venturi hangs to be established in premixing the indoor, and the outside end of premixing the room is provided with the introduction fluid entry, it links to each other and the two communicates each other to premix room and second grade venturi, and the second grade venturi has set gradually shrink tube, choke, expansion pipe from preceding back interconnect, and the end of expansion pipe is provided with the mixture export.

Furthermore, the one-level venturi is transversely erected along the central axis of the premixing chamber, the pipeline of the one-level venturi is of a tapered structure, and the diameter of the pipeline of the one-level venturi extends backwards from the main fluid inlet to form a contraction type.

Further, the pipe section of the primary venturi is contracted to form a low-pressure area near the outlet of the primary venturi.

Furthermore, the contraction pipe is arranged in a tapered structure, and the section of the pipeline of the contraction pipe is arranged in a contraction mode from front to back.

Furthermore, the expansion pipe is arranged into a gradually expanding structure, and the section of the pipeline of the expansion pipe is arranged in an expanding mode from front to back.

Further, the length of the throat pipe is smaller than that of the contraction pipe, and meanwhile, the length of the throat pipe is smaller than that of the expansion pipe.

Further, the main flow fluid enters the first-stage venturi from the main fluid inlet, enters the premixing chamber through gradual acceleration, the introduced fluid enters the premixing chamber from the introduced fluid inlet, and the main flow fluid and the introduced fluid are premixed in the premixing chamber.

Further, the mainstream fluid and the incoming fluid are of similar volumes.

Furthermore, a swirler is arranged in the premixing chamber, the swirler is provided with a conical flow guide disc, and flow guide teeth which are distributed in a vortex shape by taking the vertex of the flow guide disc as the center are arranged on the outer surface of the flow guide disc.

The utility model has the advantages that:

1. the difficulty that the conventional Venturi tube is thick due to large volume of the introduced fluid and cannot be introduced from the throat is solved, and the mixed injection of two materials with similar volumes is realized.

2. Because the two-stage Venturi injection is adopted, larger negative pressure can be formed, and the smooth introduction and mixing of the main fluid and the introduced fluid can be smoothly realized.

3. The flow guide disc is even in flow distribution along the flowing direction, and the synergistic effect of all the flow guide teeth ensures that the flow guide disc realizes full contact stirring and cutting effects on liquid in all dimensions in the circumferential direction, so that the diameter of bubbles is greatly reduced, a vortex-shaped flow passage is formed, and the mixing uniformity is good.

Drawings

Fig. 1 the utility model discloses a two-stage venturi mixer structure sketch map for close material mixing of volume.

Fig. 2 is a schematic structural view of the middle cyclone of the present invention.

Wherein, 1, a main fluid inlet; 2. a premixing chamber; 3. a primary venturi; 4. a shrink tube; 5. a throat; 6. an expansion tube; 7. a mixture outlet; 8. an inlet for the incoming fluid; 9. a flow guide disc; 10. and (4) a flow guide tooth.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

Example 1

As shown in figure 1, a venturi mixer for mixing materials with similar volumes comprises a two-stage venturi mixer consisting of a first-stage venturi 3 and a second-stage venturi, wherein the first-stage venturi 3 is embedded in a premixing chamber 2, a main fluid inlet 1 is arranged at the inlet end of the first-stage venturi 3, the outlet end of the first-stage venturi 3 is suspended in the premixing chamber 2, an introduced fluid inlet 8 is arranged at the outer end of the premixing chamber 2, the premixing chamber 2 is connected with the second-stage venturi and communicated with the second-stage venturi, a contraction pipe 4, a throat pipe 5 and an expansion pipe 6 are sequentially connected with each other from front to back, and a mixture outlet 7 is arranged at the tail end of the expansion pipe 6.

The first-level venturi 3 is transversely arranged along the central axis of the premixing chamber 2, the pipeline of the first-level venturi 3 is of a tapered structure, and the diameter of the pipeline extends backwards from the position of the main fluid inlet 1 to form a contraction type.

The pipe cross section of the primary venturi 3 is constricted to form a low pressure zone near the outlet of the primary venturi 3.

The contraction tube 4 is arranged in a gradually-reduced structure, and the section of the pipeline is arranged in a contraction mode from front to back.

The expanding pipe 6 is arranged in a gradually expanding structure, and the section of the pipeline is arranged in an expanding mode from front to back.

The length of the throat pipe 5 is smaller than that of the contraction pipe 4, and meanwhile, the length of the throat pipe 5 is smaller than that of the expansion pipe 6.

The volume of the main flow fluid and the volume of the introduced fluid are similar, the main flow fluid enters the primary venturi 3 from the main fluid inlet 1, the main flow fluid enters the premixing chamber 2 through gradual acceleration, the introduced fluid enters the premixing chamber 2 from the introduced fluid inlet 8, and the main flow fluid and the introduced fluid are premixed in the premixing chamber 2.

The specific mixing process is as follows: the main flow enters a primary venturi 3 from a main flow inlet 1, the main flow gradually accelerates to enter a premixing chamber 2 along with the contraction of the section of a pipeline, a low-pressure area is formed near the outlet of the primary venturi 3, so that the introduced flow is introduced into the premixing chamber 2 from an introduced flow inlet 8, the main flow and the introduced flow are premixed in the premixing chamber 2, the premixed two flows enter a secondary venturi together, and the premixed two flows sequentially pass through a contraction pipe 4, a throat pipe 5 and an expansion pipe 6 and are discharged from a mixture outlet 7.

As shown in fig. 2, a swirler is disposed in the premixing chamber 2, the swirler is provided with a conical deflector 9, and deflector teeth 10 distributed in a vortex shape with a vertex as a center are disposed on an outer surface of the deflector 9. The flow guide disc 9 forms a vortex to a certain degree, ensures that liquid is fully mixed along the flowing direction, fully relieves air resistance, and the synergistic effect of each stirring tooth makes the liquid of each dimensionality realize fully contact stirring, cutting action in the circumferential direction, forms the vortex-shaped flow channel simultaneously, makes the mixed liquid reach the best mixed state.

The above description is not a limitation of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various changes, modifications, additions and substitutions can be made without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a venturi mixer for close material mixing of volume which characterized in that, includes the two-stage venturi mixer that one-level venturi and second grade venturi constitute, the one-level venturi inlays to be established in premixing the indoor, and the entry end of one-level venturi is provided with main fluid inlet, and the exit end of one-level venturi hangs and establishes in premixing the indoor, and the outside end of premixing the indoor is provided with and introduces fluid inlet, it links to each other and the two communicates each other to premix room and second grade venturi, and second grade venturi is from preceding back interconnect and has set gradually shrinkage pipe, choke, expansion pipe, and the end of expansion pipe is provided with the mixture export.

2. A venturi mixer according to claim 1, wherein the primary venturi is transversely disposed along the central axis of the premixing chamber, and the primary venturi has a converging duct with a diameter extending rearwardly from the main fluid inlet.

3. A venturi mixer for mixing of materials of similar volume according to claim 1 or 2, characterized in that the duct section of the primary venturi is constricted to form a low pressure zone near the outlet of the primary venturi.

4. A venturi mixer for mixing materials of similar volume according to claim 1, wherein the convergent tube is of a tapered configuration with a convergent section of the tube from front to back.

5. A venturi mixer for mixing materials of similar volume according to claim 1, wherein the diverging pipe is arranged in a diverging configuration with a diverging duct section from front to back.

6. A venturi mixer for mixing materials of similar volume according to claim 1, wherein the throat has a length less than the length of the convergent tube and the throat has a length less than the length of the divergent tube.

7. A venturi mixer for mixing materials of similar volume according to claim 1, wherein the main flow enters the primary venturi from the main fluid inlet, the incoming flow enters the premixing chamber from the incoming flow inlet by gradually accelerating into the primary venturi, and the main flow and the incoming flow are premixed in the premixing chamber.

8. A Venturi mixer for mixing of materials of similar volume according to claim 7, wherein said mainstream fluid and incoming fluid are of similar volume.

9. A venturi mixer according to claim 1, wherein a swirler is disposed in the premixing chamber, the swirler has a conical deflector, and the outer surface of the deflector has guide teeth distributed in a vortex shape with its vertex as the center.