CN203777956U - Novel venturi-type mixer with shrinkage holes formed in diffusion segment - Google Patents
Novel venturi-type mixer with shrinkage holes formed in diffusion segment Download PDFInfo
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- CN203777956U CN203777956U CN201420061241.2U CN201420061241U CN203777956U CN 203777956 U CN203777956 U CN 203777956U CN 201420061241 U CN201420061241 U CN 201420061241U CN 203777956 U CN203777956 U CN 203777956U
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- shrinkage cavity
- diffuser
- venturi
- adjustable contraction
- adjusting device
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Abstract
The utility model relates to a novel venturi-type mixer with shrinkage holes formed in a diffusion segment. The novel venturi-type mixer comprises an inflow pipeline, a gradually reduction segment, a throat, the diffusion segment, an outflow pipeline, an introducing pipe and a plurality of groups of shrinkage holes formed in the diffusion segment, wherein each group of shrinkage holes comprises a fixed shrinkage hole and an adjustable shrinkage hole, each adjustable shrinkage hole is formed by two core plates and is embedded in the diffusion segment, and each fixed shrinkage hole is welded on the inner wall of the diffusion segment by virtue of a plurality of support frames. According to the novel venturi-type mixer, as the fixed shrinkage holes and the adjustable shrinkage holes are alternately arranged, and a shrinkage hole adjusting device can be used for online adjusting the relative position of the two core plates of each adjustable shrinkage hole, the disturbance of a mixed fluid in the diffusion segment of the venturi-type mixer can be effectively strengthened, the mixing efficiency of the venturi-type mixer can be effectively improved, and the phenomenon of uneven mixing is avoided.
Description
Technical field
The utility model relates to a kind of venturi mixer, is specifically related to the Venturi blender that a kind of diffuser contains shrinkage cavity.
Background technology
Venturi mixer is a kind of important gas-liquid or liquid liquid mixing arrangement, in engineering reality, has a wide range of applications.The Venturi tube of common venturi mixer Wei Yige throat perforate, main flow fluid, by flowing through in Venturi tube, is introduced fluid and is flowed into through the perforate of throat, utilizes pressure differential that introducing fluid is introduced and carried out blending with main flow fluid.Existing venturi mixer is to utilize in throat's perforate of Venturi tube to introduce fluid, thereby makes two kinds of fluids produce certain impact grinding effect because pressure changes, and the turbulent flow that utilizes two kinds of high-velocity fluids to form reaches the object of mixing.In conventional venturi mixer structure, because fluid-mixing strength of turbulence is little, and fluid-mixing viscosity crosses high factor, easily causes and mixes the problems such as inhomogeneous and mixing efficiency is low.
For common venturi mixer, mixing material is when flowing through diffuser, and the liquid velocity of venturi mixer near axis is maximum, and turbulence is violent, and mixed effect is good; Yet near liquid diffuser wall is due to the existence in boundary layer, the speed of liquid is very little, and two kinds of liquid mixed effects are very poor, and this structure haves much room for improvement.
In Venturi tube throat, add flow-disturbing parts, although can improve to a certain extent like this mixed effect of venturi mixer, there is following problem in this structure at venturi mixer throat interpolation flow-disturbing parts:
(1) Venturi tube throat section is long-pending very little, adds herein flow-disturbing parts and can increase throat's place's resistance, causes unnecessary energy loss.
(2) in throat, add flow-disturbing parts, because throat section is long-pending less, cause installation processing very difficult, increase production difficulty.
Summary of the invention
For solving above-mentioned problems of the prior art, the Venturi blender that provides a kind of diffuser to contain shrinkage cavity is provided the purpose of this utility model, can strengthen flow velocity and the disturbance of Venturi tube diffuser fluid, strengthen mixed effect, effectively avoiding mixing inhomogeneous phenomenon occurs, improve the mixing efficiency of venturi mixer, make venturi mixer be applicable to the introducing fluid of wider scope and the flowrate proportioning of main flow fluid, can avoid adding in throat many drawbacks that flow-disturbing parts bring simultaneously.
In order to achieve the above object, the technical scheme that the utility model adopts is:
The Venturi blender that a kind of diffuser contains shrinkage cavity, comprise the main flow Venturi tube that main flow fluid flows through, described main flow Venturi tube comprises the flow ipe 1 being connected successively, converging transition 2, throat 3, diffuser 5, flow out pipeline 6, in described throat 3 sides, have and introduce the inlet tube 4 that fluid flows into, also be included in many groups shrinkage cavity of diffuser 5 interior settings, every group of shrinkage cavity comprises fixedly shrinkage cavity 7 and an adjustable contraction 8, described fixedly shrinkage cavity 7 and adjustable contraction 8 radially all vertical with main flow fluid incoming flow direction, described fixedly shrinkage cavity 7 forms for circular central layer 15 is welded on diffuser 5 inwalls by many bracing frames 9, described adjustable contraction 8 is comprised of two central layers 10, by shrinkage cavity adjusting device 11, regulate the circulating area area of adjustable contraction 8,
Described shrinkage cavity adjusting device 11 comprises the adjusting device shell 12 that is welded on diffuser 5 outer surfaces, in adjusting device shell 12, be provided with adjusting rod 13, the diameter of described adjusting rod 13 is identical with the thickness of described central layer 10, one end is welded on central layer 10, the axis of adjusting rod 13 is vertical with the axes intersect of venturi mixer and two axial lines, for push-and-pull central layer 10, the other end passes circular hole reserved on adjusting device shell 12 and closely cooperates with adjusting device shell 12, and at adjusting rod 13, passing adjusting device shell 12 place's covers has sealing ring 14.
The axis of described circular central layer 15 and adjustable contraction 8 and the dead in line of main flow Venturi tube.
Described central layer 10 is semicircular ring structure, two central layers 10 are arranged symmetrically with centered by venturi mixer axis, two central layers 10 form an adjustable contraction 8, when 10 contact of two central layers, the circulating area at adjustable contraction 8 places is circular, when two central layers 10 are separated, the circulating area at adjustable contraction 8 places is irregular figure.
Described circular central layer 15 diameters are 2/3D, and D is the fixing internal diameter of shrinkage cavity 7 place's diffuser 5 longitudinal circular sections.
The internal diameter of described central layer 10 is 1/2d, and d is the internal diameter of adjustable contraction place 8 place's diffuser 5 longitudinal circular sections, and external diameter is identical with the external diameter of adjustable contraction 8 place's diffuser 5 circular sections.
The fixedly shrinkage cavity 7 that described diffuser 5 is from upstream in first group of shrinkage cavity in downstream is arranged on throat 3 1/10L places, downstream, and L is the length of venturi mixer diffuser, and the spacing between two adjacent groups shrinkage cavity is 1/10L; In every group of shrinkage cavity, fixedly shrinkage cavity 7 is positioned at adjustable contraction 8 upstreams, and its spacing is 1/10L.
Described shrinkage cavity adjusting device 11 can on-line control adjustable contraction 8 in the relative position of two central layers 10.
It is the corrosion resistant plate of 4mm that described circular central layer 15, central layer 10 and adjusting device shell 12 are all selected thickness, and it is the stainless steel column of 4mm that bracing frame 9 is selected diameter, and it is the stainless steel of 4mm that adjusting rod 13 is selected diameter.
The angle of flare of described diffuser 5 is 7.7 °.
Compared to the prior art, the Venturi blender that a kind of diffuser of the utility model contains shrinkage cavity can be strengthened the disturbance of fluid-mixing in venturi mixer diffuser, effectively improves the mixing efficiency of venturi mixer, avoids mixing uneven phenomenon and occurs.The utlity model has following advantage:
(1) be welded on the fixedly shrinkage cavity 7 of main flow Venturi tube diffuser 5 inner surfaces and the adjustable contraction 8 that is embedded in diffuser 5 is flowed through after shrinkage cavity mobile fluid in Venturi tube, in runner, produce obvious disperse flowing effect, its disperse flowing effect makes the turbulence of venturi mixer inner fluid more violent.When mixing material is flowed through shrinkage cavity, because circulation area diminishes, fluid-mixing flow velocity increases, and turbulence strength-enhanced, has strengthened the disturbance of fluid-mixing, has improved mixing efficiency.
(2) the interior fixedly shrinkage cavity 7 of diffuser 5 and adjustable contraction 8 are alternately arranged, impel the mixing material wave progresses in diffuser 5, flow direction and speed constantly change, and turbulence intensity is large, contributes to the mixing of liquid.
(3) add fixedly shrinkage cavity 7 and adjustable contraction 8 to make the mobile sectional area of diffuser 5 inner fluids in continuous variation, fluid is when diffuser 5 flows, convergent flows and flaring flows alternately occurs, has greatly strengthened the turbulence level of fluid-mixing, strengthens the mixed effect of two kinds of fluids.
(4) shrinkage cavity adjusting device 11 can on-line control adjustable contraction 8 in the relative position of two central layers 10, by the emulsifying effectiveness of gained mixing material, adjust central layer 10 and in diffuser 5, do inside and outside reciprocating motion, determine optimum central layer 10 positions.
(5), at the interior interpolation flow-disturbing of diffuser 5 parts, can not only avoid the resistance causing because throat's 3 sectional areas are too little to increase problem, and can make the convenient processing of flow-disturbing parts install; Meanwhile, can change again the flow field of diffuser 5, avoid near the mobile drawback slowly of the fluid of diffuser 5 walls, the flow velocity of diffuser 5 interior liquid is reached unanimity, can effectively improve the mixed effect of two kinds of liquid.
Accompanying drawing explanation
Fig. 1 is the cutaway view of a kind of diffuser of the utility model Venturi blender of containing shrinkage cavity.
Fig. 2 be a kind of diffuser of the utility model contain shrinkage cavity Venturi blender in the A-A of Fig. 1 to the i.e. fixing shrinkage cavity schematic diagram of cutaway view.
Fig. 3 be a kind of diffuser of the utility model contain shrinkage cavity Venturi blender in the B-B of Fig. 1 to cutaway view.
Fig. 4 be a kind of diffuser of the utility model contain shrinkage cavity Venturi blender in the C-C of Fig. 1 to cutaway view, be adjustable contraction schematic diagram.
Fig. 5 be a kind of diffuser of the utility model contain shrinkage cavity Venturi blender in the partial enlarged drawing at I place in Fig. 3.
Fig. 6 be a kind of diffuser of the utility model contain shrinkage cavity Venturi blender in central layer move before and after adjustable contraction place through-flow regional change schematic diagram.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As depicted in figs. 1 and 2, the Venturi blender that a kind of diffuser of the utility model contains shrinkage cavity, comprise the main flow Venturi tube that main flow fluid flows through, described main flow Venturi tube comprises the flow ipe 1 being connected successively, converging transition 2, throat 3, diffuser 5, flow out pipeline 6, in described throat 3 sides, have and introduce the inlet tube 4 that fluid flows into, also be included in many groups shrinkage cavity of diffuser 5 interior settings, every group of shrinkage cavity comprises fixedly shrinkage cavity 7 and an adjustable contraction 8, described fixedly shrinkage cavity 7 and adjustable contraction 8 radially all vertical with main flow fluid incoming flow direction, described fixedly shrinkage cavity 7 forms for circular central layer 15 is welded on diffuser 5 inwalls by many bracing frames 9, the present embodiment adopts four equally distributed bracing frames 9 to be welded on diffuser 5 inwalls, described adjustable contraction 8 is comprised of two central layers 10, regulates the circulating area area of adjustable contraction 8 by shrinkage cavity adjusting device 11, described shrinkage cavity adjusting device 11 can on-line control adjustable contraction 8 in the relative position of two central layers 10.The quantity of the present embodiment shrinkage cavity is three groups.
As the novel preferred embodiment of this practical U, described circular central layer 15 and the axis of adjustable contraction 8 and the dead in line of main flow Venturi tube.
As shown in Fig. 3, Fig. 4 and Fig. 5, described shrinkage cavity adjusting device 11 comprises adjusting device shell 12, adjusting rod 13 and sealing ring 14; Adjusting device shell 12 is welded on diffuser 5 outer surfaces,, a reserved circular hole on adjusting device shell 12, circular hole is positioned at the center of adjusting device shell 12 outer side planes; In adjusting device shell 12, be provided with adjusting rod 13, one end of described adjusting rod 13 passes circular hole reserved on adjusting device shell 12 also and adjusting device shell 12 closely cooperates, the other end is welded on central layer 10, and the axis of adjusting rod 13 is vertical with the axes intersect of venturi mixer and two axial lines; At adjusting rod 13, passing adjusting device shell 12 place's covers has sealing ring 14, guarantees that the junction of adjusting rod 13 and adjusting device shell 12 is not revealed.
As shown in Figure 6, the liquid communication area schematic that represents adjustable contraction 8 places when two central layers, 10 relative positions change, the circle that in Fig. 6, diameter is larger is the inner surface of adjustable contraction 8 place's diffusers 5, dash area is the relative positions of two central layers 10 in diffuser 5, and blank parts is the mixing material circulating area at adjustable contraction 8 places.When two central layers 10 of adjustable contraction 8 contact, adjustable contraction 8 is circular ring structure, and circulating area is herein circular, and circulation area is minimum; When shrinkage cavity tunable arrangement 11 regulates the relative position of two central layers 10 to make two central layers 10 separated, the circulating area at adjustable contraction 8 places is no longer simple circle, but becomes irregular figure.
As preferred embodiment of the present utility model, described circular central layer 15 diameters are 2/3D, and D is the fixing internal diameter of shrinkage cavity place main flow Venturi tube diffuser 5 longitudinal circular sections.
As preferred embodiment of the present utility model, the internal diameter of described central layer 10 is 1/2d, and d is the internal diameter of adjustable contraction 8 place's diffuser 5 longitudinal circular sections, and external diameter is identical with the external diameter of adjustable contraction 8 place's diffuser 5 circular sections.
As preferred embodiment of the present utility model, the fixedly shrinkage cavity 7 that described diffuser 5 is from upstream in first group of shrinkage cavity in downstream is arranged on throat 3 1/10L places, downstream, and L is the length of venturi mixer diffuser, and the spacing between two adjacent groups shrinkage cavity is 1/10L; In every group of shrinkage cavity, fixedly shrinkage cavity 7 is positioned at adjustable contraction 8 upstreams, and its spacing is 1/10L.
As preferred embodiment of the present utility model, it is the corrosion resistant plate of 4mm that described circular central layer 15, central layer 10 and adjusting device shell 12 are all selected thickness, and it is the stainless steel column of 4mm that bracing frame 9 is selected diameter, and it is the stainless steel of 4mm that adjusting rod 13 is selected diameter.
As preferred embodiment of the present utility model, the angle of flare of described diffuser 5 is 7.7 °.
The Venturi blender that a kind of diffuser of the utility model contains shrinkage cavity, can strengthen the disturbance of fluid-mixing in venturi mixer, effectively improves the mixing efficiency of venturi mixer, avoids mixing uneven phenomenon and occurs; Be welded on the fixedly shrinkage cavity 7 of diffuser 5 inner surfaces and be embedded in the adjustable contraction 8 in diffuser 5, make in Venturi tube mobile fluid flow through in runner, to be wave after fixedly shrinkage cavity 7 and adjustable contraction 8 mobile, produce obvious disperse flowing effect, its disperse flowing effect makes the turbulence of venturi mixer inner fluid more violent; Meanwhile, can change again the flow field of diffuser 5, avoid near the fluid of diffuser 5 walls to flow and slowly made fluid mix uneven drawback, make the disturbance of diffuser 5 interior liquid more violent, strengthen the mixed effect of the interior two kinds of liquid of diffuser 5.When mixing material is flowed through shrinkage cavity, because circulation area diminishes, fluid-mixing flow velocity increases, and turbulence strength-enhanced, has strengthened the disturbance of fluid-mixing, has improved mixing efficiency.
Add fixedly shrinkage cavity 7 and adjustable contraction 8, make the circulating area of diffuser 5 inner fluids in continuous variation, fluid is when diffuser 5 flows, and convergent flows and flaring flows alternately occurs, greatly strengthen the turbulence level of fluid-mixing, strengthened the mixed effect of two kinds of fluids.
The interior fixedly shrinkage cavity 7 of diffuser 5 and adjustable contraction 8 are alternately arranged, when mixing material is flowed through main flow Venturi tube diffuser 5, alternating current is crossed fixedly shrinkage cavity 7 and adjustable contraction 8, mixing material flows at main flow Venturi tube diffuser 5 interior waves, mixing material flow velocity and flow direction change constantly, this structure increases turbulence intensity and the flow velocity of main flow Venturi tube diffuser 5 interior mixing materials effectively, improve the mixing efficiency of liquid, avoid mixing inhomogeneous phenomenon and occur, can significantly improve the mixing efficiency of venturi mixer.
As shown in Fig. 3, Fig. 4 and Fig. 5, each adjustable contraction 8 connects a supporting shrinkage cavity adjusting device 11, central layer 10 welds together with the adjusting rod 13 in shrinkage cavity adjusting device 11, when carrying out shrinkage cavity adjusting, preferably, guarantee that two adjusting rods 13 that same shrinkage cavity connects move simultaneously, and two adjusting rod 13 displacements are identical.By push-and-pull adjusting rod 13, carry out mobile central layer 10, to adjust the relative position of two central layers 10, make two central layers 10 take venturi mixer axis as symmetrical centre, inside and outside reciprocating motion in diffuser 5, thereby the through-flow region of the liquid of change shrinkage cavity place.Two central layers 10 are arranged symmetrically with centered by venturi mixer axis, and when 10 contact of two central layers, two central layers 10 form an annulus, and now circulating area is circular, and area is minimum.
The relative position of the two piece central layers 10 of shrinkage cavity adjusting device 11 in can on-line control adjustable contraction 8, changes the circulating area area at adjustable contraction 8 places, makes regulating measure abundanter, and mixed effect is better.The emulsifying effectiveness of the mixing material of preparing by observation venturi mixer, two adjusting rods 13 that are connected by push-and-pull adjustable contraction, make central layer 10 inside and outside reciprocating motion in diffuser 5, adjust the relative position of two central layers 10, select applicable circulation area.In central layer 10 moving process, circulating area, in continuous variation, can be strengthened the flow-disturbing intensity of regional area, strengthens mixed effect.
Claims (9)
1. the Venturi blender that diffuser contains shrinkage cavity, comprise the Venturi tube that main flow fluid flows through, described Venturi tube comprises the flow ipe (1) being connected successively, converging transition (2), throat (3), diffuser (5), flow out pipeline (6), in described throat (3) side, have and introduce the inlet tube (4) that fluid flows into, it is characterized in that: be also included in the many groups shrinkage cavity arranging in diffuser (5), every group of shrinkage cavity comprises a fixedly shrinkage cavity (7) and an adjustable contraction (8), described fixedly shrinkage cavity (7) and adjustable contraction (8) radially all vertical with main flow fluid incoming flow direction, described fixedly shrinkage cavity (7) forms for circular central layer (15) is welded on diffuser (5) inwall by many bracing frames (9), described adjustable contraction (8) is comprised of two central layers (10), by shrinkage cavity adjusting device (11), regulate the circulating area area of adjustable contraction (8),
Described shrinkage cavity adjusting device (11) comprises the adjusting device shell (12) that is welded on diffuser (5) outer surface, in adjusting device shell (12), be provided with adjusting rod (13), the diameter of described adjusting rod (13) is identical with the thickness of described central layer (10), one end is welded on central layer (10), the axis of adjusting rod (13) and axes intersect and the two axial lines of venturi mixer are vertical, for push-and-pull central layer (10), the other end passes the upper reserved circular hole of adjusting device shell (12) also and adjusting device shell (12) closely cooperates, at adjusting rod (13), passing adjusting device shell (12) locates cover and has a sealing ring (14).
2. the Venturi blender that a kind of diffuser according to claim 1 contains shrinkage cavity, is characterized in that: described circular central layer (15) and the axis of adjustable contraction (8) and the dead in line of main flow Venturi tube.
3. the Venturi blender that a kind of diffuser according to claim 1 contains shrinkage cavity, it is characterized in that: described central layer (10) is semicircular ring structure, two central layers (10) are arranged symmetrically with centered by venturi mixer axis, two central layers (10) form an adjustable contraction (8), when two central layers (10) contact, the circulating area that adjustable contraction (8) is located is for circular, when two central layers (10) are separated, the circulating area that adjustable contraction (8) is located is irregular figure.
4. the Venturi blender that a kind of diffuser according to claim 1 contains shrinkage cavity, is characterized in that: described circular central layer (15) diameter is 2/3D, and D is that the longitudinally internal diameter of circular section of diffuser (5) is located in fixedly shrinkage cavity (7).
5. the Venturi blender that a kind of diffuser according to claim 1 contains shrinkage cavity, it is characterized in that: the internal diameter of described central layer (10) is 1/2d, d is that adjustable contraction (8) is located the longitudinally internal diameter of circular section of diffuser (5), and external diameter is identical with the external diameter that adjustable contraction (8) is located diffuser (5) circular section.
6. the Venturi blender that a kind of diffuser according to claim 1 contains shrinkage cavity, it is characterized in that: the fixedly shrinkage cavity (7) that described diffuser (5) is from upstream in first group of shrinkage cavity in downstream is arranged on 1/10L place, throat (3) downstream, L is the length place of venturi mixer diffuser, and the spacing between two adjacent groups shrinkage cavity is 1/10L; In every group of shrinkage cavity, fixedly shrinkage cavity (7) is positioned at adjustable contraction (8) upstream, and its spacing is 1/10L.
7. the Venturi blender that a kind of diffuser according to claim 1 contains shrinkage cavity, is characterized in that: described shrinkage cavity adjusting device (11) can on-line control adjustable contraction (8) in the relative position of two central layers (10).
8. the Venturi blender that a kind of diffuser according to claim 1 contains shrinkage cavity, it is characterized in that: it is the corrosion resistant plate of 4mm that described circular central layer (15), central layer (10) and adjusting device shell (12) are all selected thickness, it is the stainless steel column of 4mm that bracing frame (9) is selected diameter, and it is the stainless steel of 4mm that adjusting rod (13) is selected diameter.
9. the Venturi blender that a kind of diffuser according to claim 1 contains shrinkage cavity, is characterized in that: the angle of flare of described diffuser (5) is 7.7 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420061241.2U CN203777956U (en) | 2014-02-10 | 2014-02-10 | Novel venturi-type mixer with shrinkage holes formed in diffusion segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420061241.2U CN203777956U (en) | 2014-02-10 | 2014-02-10 | Novel venturi-type mixer with shrinkage holes formed in diffusion segment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203777956U true CN203777956U (en) | 2014-08-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420061241.2U Withdrawn - After Issue CN203777956U (en) | 2014-02-10 | 2014-02-10 | Novel venturi-type mixer with shrinkage holes formed in diffusion segment |
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| Country | Link |
|---|---|
| CN (1) | CN203777956U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846027A (en) * | 2014-02-10 | 2014-06-11 | 西安交通大学 | Venturi mixer with diffuser containing shrinkage cavities |
| CN108554347A (en) * | 2018-05-31 | 2018-09-21 | 苏州市金翔钛设备有限公司 | Reaction kettle with venturi tube structure |
-
2014
- 2014-02-10 CN CN201420061241.2U patent/CN203777956U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103846027A (en) * | 2014-02-10 | 2014-06-11 | 西安交通大学 | Venturi mixer with diffuser containing shrinkage cavities |
| CN103846027B (en) * | 2014-02-10 | 2015-10-21 | 西安交通大学 | A kind of diffuser contains the venturi mixer of shrinkage cavity |
| CN108554347A (en) * | 2018-05-31 | 2018-09-21 | 苏州市金翔钛设备有限公司 | Reaction kettle with venturi tube structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140820 Effective date of abandoning: 20151021 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |