CN208340532U - Flow mixer and guiding device - Google Patents

Abstract

A kind of flow mixer, including mixer case, the mixer case includes antetheca, rear wall and peripheral wall, the antetheca is oppositely arranged with the rear wall and is connect by the peripheral wall and form mixing chamber, fluid input is set on the antetheca, the peripheral wall opens up fluid exit, and the fluid input is arranged vertically with the fluid exit.A kind of guiding device, including water conservancy diversion converter and the flow mixer, the fluid exit matches connection with the input terminal of the water conservancy diversion converter, the flow mixer is for realizing the fluid-mixing that is obtained by uniformly mixingg of fluid, and the water conservancy diversion converter is for making the turbulivity of the fluid-mixing be reduced to preset range.Flow mixer and guiding device provided by the utility model can realize the uniform mixing of fluid, and mixing fluid, abundant, ingredient is uniform, turbulivity is ideal, reduces diffusing for pollutant and flies upward phenomenon, ensure sintering processing efficiency.

Description

Flow mixer and guiding device

Technical field

The utility model belongs to 3D printing equipment technical field, is a kind of flow mixer and water conservancy diversion dress specifically It sets.

Background technique

Increasing material manufacturing (Additive Manufacturing, AM) is commonly called as 3D printing, be merged CAD, Material processing with forming technique, based on digital model file, by software and digital control system by dedicated metal material, non- Metal material and biomaterial for medical purpose are successively accumulated according to modes such as extruding, sintering, melting, photocuring, injections, are produced The manufacturing technology of physical item.

Wherein, selective laser sintering (Selective Laser Sintering) is a kind of important increasing material manufacturing side Method.Its principle is that laser beam is selectively successively sintered dusty material according to layering cross section information progress, has all been sintered At the extra powder of rear removal, to obtain required part.

In selective laser sintering process, continuous layer of powder material can generate a considerable number of flue dust, volatile matter and atomization Object, and mix with the powder fines flown upward, stop the optical path of laser beam and influences to be sintered efficiency.Especially in Processing Room The supply of protective gas further causes flue dust, volatile matter, aerosol and mixing for powder fines to fly upward, and serious reduce is burnt Tie processing efficiency.

Utility model content

In order to overcome the deficiencies of the prior art, the utility model provides a kind of flow mixer and guiding device, makes to flow Body mixing is sufficiently, ingredient is uniform, turbulivity is ideal, reduces diffusing for pollutant and flies upward phenomenon, ensures sintering processing efficiency.

The purpose of this utility model is achieved through the following technical solutions:

A kind of flow mixer, including mixer case, the mixer case include antetheca, rear wall and peripheral wall, described Antetheca is oppositely arranged with the rear wall and is connect by the peripheral wall and form mixing chamber, and fluid input is arranged on the antetheca, The peripheral wall opens up fluid exit, and the fluid input is arranged vertically with the fluid exit.

As an improvement of the above technical solution, the extending direction of fluid input phase vertical with rear wall holding It hands over.

As a further improvement of the above technical scheme, the fluid input is constructed with cylindrical nozzle, for increasing The negative pressure of fluid simultaneously will be in the fluid injection to the rear wall.

As a further improvement of the above technical scheme, the mixing chamber has cylindrical cavity structure, the fluid input End and the cylindrical cavity structure coaxial arrangement.

As a further improvement of the above technical scheme, the mixing chamber has flat-shaped cavity body structure, the flat-shaped cavity The spacing with a thickness of the antetheca and the rear wall of structure.

As a further improvement of the above technical scheme, the extending direction of the fluid input and the flat-shaped cavity knot The thickness direction of structure is consistent.

As a further improvement of the above technical scheme, the fluid exit includes a plurality of continuously distributed shunting grid Hole, the shunting gate hole are vertical with fluid input holding.

As a further improvement of the above technical scheme, it is described shunt gate hole in distribution central angle along the outer of the peripheral wall Profile array distribution, it is described distribution central angle pair arc using the center of mixing chamber as the center of circle.

As a further improvement of the above technical scheme, the peripheral wall of the mixer case is equipped with for external connection Mounting ears.

A kind of guiding device, including flow mixer described in water conservancy diversion converter and any of the above item, the fluid output End matches connection with the input terminal of the water conservancy diversion converter, and the flow mixer is obtained by uniformly mixingg for realizing fluid Fluid-mixing, the water conservancy diversion converter is for making the turbulivity of the fluid-mixing be reduced to preset range.

The beneficial effects of the utility model are:

(1) flow mixer is used to increase the velocity gradient of fluid or fluid is made to form turbulent flow, to realize the equal of fluid Even mixing, the distributed components of fluid guarantee that purging effect is average；

(2) guiding device makes to flow by the immixture of flow mixer and the turbulivity adjustment effect of water conservancy diversion converter Body mixing is sufficiently, ingredient is uniform, turbulivity is ideal, reduces diffusing for pollutant and flies upward phenomenon, ensures sintering processing efficiency.

To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and Cooperate appended attached drawing, is described in detail below.

Detailed description of the invention

It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also To obtain other relevant attached drawings according to these attached drawings.

Fig. 1 is the axonometric schematic diagram for the flow mixer that the utility model embodiment 1 provides；

Fig. 2 is the schematic cross-sectional view for the flow mixer that the utility model embodiment 1 provides；

Fig. 3 is the axonometric schematic diagram for the guiding device that the utility model embodiment 2 provides；

Fig. 4 is the schematic cross-sectional view for the guiding device that the utility model embodiment 2 provides；

Fig. 5 is the perspective signal of the first structure of the water conservancy diversion converter for the guiding device that the utility model embodiment 2 provides Figure；

Fig. 6 is that the axis of the second structure of the water conservancy diversion converter for the guiding device that the utility model embodiment 2 provides measures meaning Figure；

Fig. 7 is the perspective signal of the second structure of the water conservancy diversion converter for the guiding device that the utility model embodiment 2 provides Figure.

Main element symbol description:

1000- guiding device, 0100- flow mixer, 0110- mixer case, 0111- antetheca, 0112- rear wall, 0113- peripheral wall, 0114- mixing chamber, 0120- fluid input, 0130- fluid exit, 0131- shunt gate hole, 0140- installation Ear, 0200- water conservancy diversion converter, 0210- diversion shell, 0211- water conservancy diversion input terminal, 0212- diversion cavity, the output of 0213- water conservancy diversion End, 0220- guide vane.

Specific embodiment

Flow mixer and guiding device are carried out more below with reference to relevant drawings for the ease of understanding the utility model, Comprehensive description.The preferred embodiment of flow mixer and guiding device is given in attached drawing.But flow mixer and water conservancy diversion Device can be realized by many different forms, however it is not limited to embodiment described herein.On the contrary, providing these realities The purpose for applying example is to keep the disclosure to flow mixer and guiding device more thorough and comprehensive.

It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to To another element or it may be simultaneously present centering elements.On the contrary, when element is referred to as " directly existing " another element "upper", There is no intermediary elements.Term as used herein "vertical", "horizontal", "left" and "right" and similar statement are For illustrative purposes.

Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model The normally understood meaning of the technical staff in domain is identical.Herein in the used in the description of flow mixer and guiding device Term, which is only for the purpose of describing specific embodiments, is not intended to limit the utility model.Term as used herein " and/or " it include any and all combinations of one or more related listed items.

Embodiment 1

Fig. 1~2 are please referred to, the present embodiment discloses a kind of flow mixer 0100, the master of the flow mixer 0100 Body part includes mixer case 0110, for realizing the uniform mixing of fluid.Mixing chamber 0114 is set in mixer case 0110, is The main function place of fluid mixing.Mixer case 0110 includes antetheca 0111, rear wall 0112 and peripheral wall 0113, antetheca 0111 It is oppositely arranged with rear wall 0112 and is connect by peripheral wall 0113, three surrounds to form mixing chamber 0114.

Fluid input 0120 is set on antetheca 0111, to input fluid to mixing chamber 0114.Since antetheca 0111 is with after Wall 0112 is kept relatively, and fluid input 0120 also keeps the fluid for relatively inputting fluid input 0120 with rear wall 0112 Rear wall 0112 is impacted, to increase the velocity gradient of fluid or form turbulent flow, while the transformation of flow direction occurs.It flows as a result, Body has and is acutely vortexed as caused by turbulent flow in generation segmentation mixing in mixing chamber 0114, keeps the mixing of fluid very abundant, Guarantee that the molecular distribution of fluid is more uniform.

It is appreciated that the concrete type of fluid is depending on practical application.In 3D printing equipment, fluid is generally inertia Gas (such as argon gas) or nitrogen process indoor protective atmosphere to provide, avoid Powder Oxidation.In practical application, fluid input End 0120 can be connect with noble gas source, directly input fluid.

The angle of fluid input 0120 and rear wall 0112 is depending on actual application environment, exemplarily, fluid input The extending direction at end 0120 intersects vertically with the holding of rear wall 0112, makes the fluid orthogonal Ground shock waves of input in the table of rear wall 0112 Face further increases turbulivity (Turbulence Level) and promotes mixed effect.

Wherein, peripheral wall 0113 opens up fluid exit 0130, for exporting by mixed fluid.Wherein, fluid inputs End 0120 is arranged vertically with fluid exit 0130.Here, the surface direction in the direction of fluid exit 0130 and rear wall 0112 It is closer to, guarantee is smooth by flowing when mixing the fluid output of steering, always with uniform molecular structure.

Exemplarily, fluid input 0120 is constructed with cylindrical nozzle, for increasing the negative pressure of fluid and spraying fluid It is incident upon on rear wall 0112.In other words, fluid input 0120 has cylindrical configurations, accelerates fluid under Bernoulli effect.Knot The area discrepancy between fluid input 0120 and mixing chamber 0114 is closed, fluid occurs preferable when leaving fluid input 0120 Jet action, the turbulivity after impacting rear wall 0112 are further promoted, and promote the mixed effect of fluid.

Exemplarily, mixing chamber 0114 has cylindrical cavity structure, and fluid input 0120 is coaxial with cylindrical cavity structure Arrangement.In other words, antetheca 0111 and 0112 keeping parallelism of rear wall and vertical with peripheral wall 0113 respectively, and the inner surface of peripheral wall 0113 For cylindrical surface.Under coaxial relation, fluid is centrally located for the shock point of rear wall 0112.Having for being formed after impact is certain rapid The fluid of mobility leaves mixing chamber 0114 through fluid exit 0130 towards the component part of fluid exit 0130；Remaining side To component part by peripheral wall 0113 inner surface effect and high speed circle round, through fluid exit 0130 after further vortex mixed Output.Visibly, cylindrical cavity structure has its special convolution acceleration, improves the turbulivity of fluid.

Exemplarily, mixing chamber 0114 have flat-shaped cavity body structure, flat-shaped cavity body structure with a thickness of antetheca 0111 with after The spacing of wall 0112.The thickness of flat-shaped cavity body structure is smaller, makes the distance between fluid exit 0130 and rear wall 0112 Smaller, the fluid after guaranteeing injection remains ideal velocity before impact, will not decay, obtain preferable impingement mix Effect.Further, for the mixing chamber 0114 with flat-shaped cylindrical cavity structure, fluid flowing is more concentrated, and convolution adds Speed effect is more significant.

Exemplarily, the extending direction of fluid input 0120 is consistent with the thickness direction of flat-shaped cavity body structure.Wherein, it flows The extending direction of body input terminal 0120 is consistent with fluid flow direction.Under previous constructions, the positive vertical Ground shock waves rear wall of fluid 0112, energy is more concentrated.

As previously mentioned, fluid exit 0130 enables the fluid in mixing chamber 0114 to arrange through the inside and outside of peripheral wall 0113 Out.Exemplarily, fluid exit 0130 includes a plurality of continuously distributed shunting gate hole 0131, and any shunting gate hole 0131 is Keep vertical with fluid input 0120.Gate hole 0131 is shunted for realizing the shunting of output fluid, keeps fluid intensive and reduces Turbulivity enhances the controllable degree of fluid, convenient for the subsequent applications of fluid.

Exemplarily, gate hole 0131 is shunted in the outer profile array distribution in distribution center of circle angular region along peripheral wall 0113, is divided Cloth central angle pair arc using the center of mixing chamber 0114 as the center of circle.For example, shunting gate hole in foregoing cylindrical cavity body structure 0131 along peripheral wall 0113 excircle arc be distributed, keep shunting function even more ideal, shunt hierarchical structure it is significant, make export fluid Turbulivity further decrease.

Be distributed central angle range depending on actual needs, exemplarily, be distributed central angle angular range be 70 °~ 90°.In the range, it shunts gate hole 0131 successively to act in different location, it is more satisfactory to shunt hierarchical structure.

Exemplarily, the peripheral wall 0113 of mixer case 0110 is equipped with the mounting ears 0140 for external connection.Peace Dress ear 0140 realizes the close installation of flow mixer 0100 and outer member, guarantees for being connected and fixed with outer member The being completely embedded property of runner.In an application examples, the quantity of mounting ears 0140 is 2, and it is defeated to be symmetrically disposed on fluid The two sides of outlet 0130.In this way, the output fluid of fluid exit 0130 can be exported equably to outer member, flow channel is flat It is smooth smooth.

Embodiment 2

Fig. 3~4 are please referred to, on the basis of embodiment 1, the present embodiment discloses a kind of guiding device 1000, including Flow mixer 0100 and water conservancy diversion converter 0200.Wherein, the fluid exit 0130 of flow mixer 0100 and water conservancy diversion are converted The input terminal (i.e. water conservancy diversion input terminal 0211) of device 0200 matches connection.Flow mixer 0100 for realizing fluid uniform mixing And fluid-mixing is obtained, water conservancy diversion converter 0200 is for making the turbulivity of fluid-mixing be reduced to preset range.

It should be noted that the processing of the equipment can be made indoor when guiding device 1000 is applied to 3D printing equipment Protective gas has the property that first, and protective gas has turbulence characteristic, it is sufficient to make itself and flue dust, volatile matter, dusty material Fines etc. is discharged after being sufficiently mixed, and realizes the cleaning to Processing Room；Second, the turbulivity of protective gas should be lower than critical value, keep away Exempt to cause the pollutant of Processing Room to diffuse.Wherein, critical value is that flue dust, volatile matter, dusty material fines is caused to intersperse among entirely The minimum turbulivity of Processing Room, even if also turbulent flow is confined to tie region between the gas input of Processing Room and gas output end Interior turbulivity.Exemplarily, in this application, the turbulivity of protective gas is not more than 5%.

Fig. 5 is please referred to, the main component of water conservancy diversion converter 0200 includes diversion shell 0210.Diversion shell 0210 has Water conservancy diversion input terminal 0211, diversion cavity 0212 and water conservancy diversion output end 0213, three are sequentially communicated and are formed the channel of fluid flowing.Its In, the junction of water conservancy diversion input terminal 0211, diversion cavity 0212 and water conservancy diversion output end 0213 seamlessly transits, and the wall of diversion cavity 0212 Face is smoothly continuous, to reduce the linear loss of fluid and reduce turbulent phenomenon.Wherein, the passage section self-conductance of diversion shell 0210 It flows input terminal 0211 to water conservancy diversion output end 0213 to be incremented by, the flowing velocity for flowing through fluid therein is successively decreased, to make fluid Turbulivity is controlled in lower range.

The construction of diversion cavity 0212 is varied, and exemplarily, diversion cavity 0212 has flat-shaped cavity constructions.Flat-shaped cavity The thickness (that is, the distance between front and rear wall of diversion shell 0210) of construction is smaller, makes passage section in long and narrow wheel It is wide.Under the construction, the purging range that diversion cavity 0212 exports fluid has stronger controllability.When applied to 3D printing equipment Processing Room in when, the protective gas that water conservancy diversion converter 0200 exports concentrates on required protection and cleaning range, protective effect It concentrates and avoids pollution object and diffuse.

Wherein, the width dimensions of flat-shaped cavity constructions are incremented by from water conservancy diversion input terminal 0211 to water conservancy diversion output end 0213, realize The incremental purpose of passage section, and water conservancy diversion output end 0213 is made to form flat mouth structure.Similarly, the width dimensions of flat mouth structure compared with It is small, form long and narrow output face.Exemplarily, long and narrow output face includes the shapes such as long and narrow ellipse, narrow and long rectangular.

Wherein, the shape of flat-shaped cavity constructions is varied.Exemplarily, flat-shaped cavity constructions have along its thickness direction Triangle projected outline.In other words, had by the section intercepted using the thickness direction of flat-shaped cavity constructions by the plane of normal It is triangular shaped.The bottom edge of triangle is located on water conservancy diversion output end 0213, and the vertex opposite with bottom edge is located at water conservancy diversion input terminal On 0211.

Exemplarily, flat-shaped cavity constructions have symmetrical structure along its width direction, and are formed and led in the both ends of symmetry axis Flow input terminal 0211 and water conservancy diversion output end 0213.In other words, flat-shaped cavity constructions, water conservancy diversion input terminal 0211 and water conservancy diversion output end 0213 has center coaxial relation.For example, the triangle is isosceles triangle under aforementioned triangular projected outline situation.

Exemplarily, the guide vane 0220 of a plurality of array distributions is equipped in diversion cavity 0212, guide vane 0220 is certainly Water conservancy diversion input terminal 0211 extends to water conservancy diversion output end 0213, and diversion cavity 0212 is divided into a plurality of water conservancy diversion streams by guide vane 0220 Road.Fluid enters water conservancy diversion runner, forms multiply shunting body and realizes shunting.Any shunting body by the water conservancy diversion runner where it about Beam, it is further intensive and reduce turbulivity, enhance the controllable degree of fluid.Wherein, guide vane 0220 can be by metal or plastics Equal different materials are made, and have thin-walled ribbon structure.

Exemplarily, Variable rate direction array distribution of a plurality of guide vanes 0220 along diversion cavity 0212, water conservancy diversion leaf Piece 0220 is connect with the front and rear wall of diversion cavity 0212 respectively, and the passage section of any water conservancy diversion runner is from water conservancy diversion input terminal 0211 to leading Output end 0213 is flowed to be incremented by.In other words, a plurality of water conservancy diversion runners are along the successively neighbour distribution of the Variable rate direction of diversion cavity 0212. Wherein, the Variable rate of diversion cavity 0212, referring to causes passage section to export from the water conservancy diversion input terminal 0211 to the water conservancy diversion The incremental size in end 0213.For example, the Variable rate of diversion cavity 0212 is its width direction in aforementioned flat-shaped cavity constructions.

The array rule of guide vane 0220 is depending on the specific structure of diversion cavity 0212, to realize reduction fluid turbulent The purpose of degree.Exemplarily, distribution angle having the same between a plurality of guide vanes 0220.In other words, guide vane 0220 is uniformly distributed along same distribution circular arc.In the aforementioned flat-shaped cavity constructions with symmetrical structure, the circle of the distribution circular arc The heart is located on the symmetry axis of flat-shaped cavity constructions.Further, the normal of plane where distribution circular arc is along flat-shaped cavity constructions Thickness direction.

Exemplarily, a plurality of guide vanes 0220 form circular arc distribution knot close to one end of water conservancy diversion input terminal 0211 in it Structure keeps the water conservancy diversion input terminal 0211 of water conservancy diversion runner more round and smooth, further decreases obstruction and loss when shunting, make turbulivity into One step reduces.

Exemplarily, there is consistent variation to become in the one side wall face of guide vane 0220 and its immediate diversion cavity 0212 Gesture keeps the surface of each water conservancy diversion runner more smooth, guarantees that the flowing of shunting body is smooth.For example, in the arc-shaped curved surface in two sidewalls In flat-shaped cavity constructions, guide vane 0220 have curved surfaces, and the fluctuating rule of its curved surfaces be unanimously to it is ipsilateral with it Diversion cavity 0212 side wall.

Supplementary explanation, water conservancy diversion input terminal 0211 and the shape of water conservancy diversion output end 0213 are varied, be generally adapted to and its The shape of the outer member to connect.Exemplarily, water conservancy diversion input terminal 0211 have circular shape, and with 0220 end of guide vane The circular arc distributed architecture that arrangement is formed has concentric relation.Please refer to Fig. 6~7, another kind demonstration, water conservancy diversion input terminal 0211 It can be for along the axially extending conduit of diversion cavity 0212.

Various shapes can be used in supplementary explanation, diversion shell 0210.Exemplarily, diversion shell 0210 has thin-wall case Structure keeps it consistent with the shape of diversion cavity 0212.Under the construction, the size of diversion shell 0210 is more compact, and is self-possessed It is effectively reduced.

In all examples being illustrated and described herein, any occurrence should be construed as merely illustratively, without It is as limitation, therefore, other examples of exemplary embodiment can have different values.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed, But it cannot be understood as the limitations to the scope of the utility model.It should be pointed out that for the ordinary skill of this field For personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this The protection scope of utility model.Therefore, the protection scope of the utility model should be determined by the appended claims.

Claims (10)

1. a kind of flow mixer, which is characterized in that including mixer case, the mixer case include antetheca, rear wall with Peripheral wall, the antetheca are oppositely arranged with the rear wall and are connect by the peripheral wall and form mixing chamber, and stream is arranged on the antetheca Body input terminal, the peripheral wall open up fluid exit, and the fluid input is arranged vertically with the fluid exit.

2. flow mixer according to claim 1, which is characterized in that the extending direction of the fluid input with it is described Rear wall holding intersects vertically.

3. flow mixer according to claim 1, which is characterized in that the fluid input has cylindrical nozzle structure It makes, for increasing the negative pressure of fluid and by the fluid injection to the rear wall.

4. flow mixer according to claim 1, which is characterized in that the mixing chamber has cylindrical cavity structure, institute State fluid input and the cylindrical cavity structure coaxial arrangement.

5. flow mixer according to claim 1, which is characterized in that the mixing chamber has flat-shaped cavity body structure, institute State the spacing with a thickness of the antetheca and the rear wall of flat-shaped cavity body structure.

6. flow mixer according to claim 5, which is characterized in that the extending direction of the fluid input with it is described The thickness direction of flat-shaped cavity body structure is consistent.

7. flow mixer according to claim 1, which is characterized in that the fluid exit includes a plurality of continuous points The shunting gate hole of cloth, the shunting gate hole are vertical with fluid input holding.

8. flow mixer according to claim 7, which is characterized in that the shunting gate hole in distribution central angle in along institute State the outer profile array distribution of peripheral wall, the distribution central angle pair arc using the center of mixing chamber as the center of circle.

9. flow mixer according to claim 1, which is characterized in that the peripheral wall of the mixer case is equipped with and is used for The mounting ears of external connection.

10. a kind of guiding device, which is characterized in that mixed including water conservancy diversion converter and the described in any item fluids of claim 1-9 Clutch, the fluid exit match connection with the input terminal of the water conservancy diversion converter, and the flow mixer is for realizing stream Body is obtained by uniformly mixingg fluid-mixing, and the water conservancy diversion converter is default for being reduced to the turbulivity of the fluid-mixing Range.