Flow mixer and guiding device
Technical field
The invention belongs to 3D printing equipment technical fields, are a kind of flow mixer and guiding device specifically.
Background technology
Increasing material manufacturing (Additive Manufacturing, AM) is commonly called as 3D printing, be merged CAD,
Material is processed 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 will produce a considerable number of flue dust, volatile matter and atomization
Object, and mix with the powder fines flown upward, so that the light path of laser beam is stopped 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.
Invention content
For overcome the deficiencies in the prior art, the present invention provides a kind of flow mixer and guiding devices, keep fluid mixed
Conjunction is fully, ingredient is uniform, turbulivity is ideal, reduces diffusing for pollutant and flies upward phenomenon, ensures sintering processing efficiency.
The purpose of the present invention 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 thickness of structure is the spacing of the antetheca and the rear wall.
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, the shunting gate hole in distribution central angle along the outer of the peripheral wall
Profile array distribution, it is described distribution central angle to 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 the 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 invention are as follows:
(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 ensure that purging effect is average;
(2) guiding device makes stream by the immixture of flow mixer and the turbulivity adjustment effect of water conservancy diversion converter
Body mixing is fully, 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 present invention to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the axonometric schematic diagram for the flow mixer that the embodiment of the present invention 1 provides;
Fig. 2 is the schematic cross-sectional view for the flow mixer that the embodiment of the present invention 1 provides;
Fig. 3 is the axonometric schematic diagram for the guiding device that the embodiment of the present invention 2 provides;
Fig. 4 is the schematic cross-sectional view for the guiding device that the embodiment of the present invention 2 provides;
Fig. 5 is the perspective diagram of the first structure of the water conservancy diversion converter for the guiding device that the embodiment of the present invention 2 provides;
Fig. 6 is the axonometric schematic diagram of the second structure of the water conservancy diversion converter for the guiding device that the embodiment of the present invention 2 provides;
Fig. 7 is the perspective diagram of the second structure of the water conservancy diversion converter for the guiding device that the embodiment of the present invention 2 provides.
Main element symbol description:
1000- guiding devices, 0100- flow mixers, 0110- mixer cases, 0111- antethecas, 0112- rear walls,
0113- peripheral walls, 0114- mixing chambers, 0120- fluid inputs, 0130- fluid exits, 0131- shunt gate hole, 0140- installations
Ear, 0200- water conservancy diversion converters, 0210- diversion shells, 0211- water conservancy diversion input terminals, 0212- diversion cavities, the output of 0213- water conservancy diversion
End, 0220- guide vanes.
Specific implementation mode
To facilitate the understanding of the present invention, flow mixer and guiding device are carried out more comprehensively below with reference to relevant drawings
Description.The preferred embodiment of flow mixer and guiding device is given in attached drawing.But flow mixer and guiding device
It can be realized by many different forms, however it is not limited to embodiment described herein.On the contrary, providing these embodiments
Purpose be to keep the disclosure to flow mixer and guiding device more thorough and comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be 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 " vertically ", " horizontal ", "left", "right" and similar statement are
For illustrative purposes.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Herein in flow mixer and the term used in the description of guiding device
It is only for the purpose of describing specific embodiments and is not intended to limit the present invention.Term " and or " used herein includes
Any and all combinations of one or more relevant 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 keeps opposite, and fluid input 0120 also keeps opposite with rear wall 0112, the fluid for making fluid input 0120 input
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, with being acutely vortexed caused by turbulent flow, keeps the mixing of fluid very abundant in generation segmentation mixing in mixing chamber 0114,
Ensure that the molecular distribution of fluid is more uniformly distributed.
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, it is smooth to ensure that the fluid by mixing steering flows when exporting, there is uniform molecular structure always.
Exemplarily, fluid input 0120 is constructed with cylindrical nozzle, and the negative pressure for increasing fluid simultaneously sprays fluid
It is incident upon on rear wall 0112.In other words, fluid input 0120 has cylindrical configurations, and fluid is made to accelerate 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 impacted after rear wall 0112 are further promoted, and promote the mixed effect of fluid.
Exemplarily, mixing chamber 0114 has cylindrical cavity structure, fluid input 0120 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 towards the component part of fluid exit 0130 through 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, it is antetheca 0111 with after that mixing chamber 0114, which has flat-shaped cavity body structure, the thickness of flat-shaped cavity body structure,
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
It is smaller, ensure that the fluid after 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 notable.
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
Go out.Exemplarily, fluid exit 0130 includes a plurality of continuously distributed shunting gate hole 0131, and any shunting gate hole 0131 is equal
Keep vertical with fluid input 0120.Shunting of the gate hole 0131 for realizing output fluid is shunted, keeps fluid intensive and reduces
Turbulivity enhances the controllable degree of fluid, is convenient for the subsequent applications of fluid.
Exemplarily, shunting gate hole 0131 is divided in the outer profile array distribution along peripheral wall 0113 in distribution center of circle angular region
Cloth central angle to arc using the center of mixing chamber 0114 as the center of circle.For example, in foregoing cylindrical cavity body structure, gate hole is shunted
0131 along peripheral wall 0113 excircle arc be distributed, keep shunting function even more ideal, shunting hierarchical structure it is notable, make output 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, shunting gate hole 0131 is successively acted in different location, and shunting hierarchical structure is more satisfactory.
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, ensures 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 both 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 is converted with water conservancy diversion
Input terminal (i.e. water conservancy diversion input terminal 0211) the matching connection of device 0200.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 when guiding device 1000 is applied to 3D printing equipment, the processing of the equipment can be made indoor
Protective gas has the property that:First, 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 less 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, water conservancy diversion input terminal 0211, diversion cavity 0212 and the junction of water conservancy diversion output end 0213 seamlessly transit, 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, and it is in long and narrow wheel to make passage section
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, water conservancy diversion converter 0200 export protective gas concentrate on required protection with cleaning range, protective effect
It concentrates and pollutant is avoided to 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 by the plane of normal using the thickness direction of flat-shaped cavity constructions
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, under aforementioned triangular projected outline situation, which is isosceles triangle.
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, a plurality of guide vanes 0220 are along the Variable rate direction array distribution of 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 Variable rate direction of diversion cavity 0212 successively neighbour distribution.
Wherein, the Variable rate of diversion cavity 0212 refers to that passage section is caused to be exported from the water conservancy diversion input terminal 0211 to the water conservancy diversion
Hold 0213 incremental size.For example, in aforementioned flat-shaped cavity constructions, the Variable rate of diversion cavity 0212 is its width direction.
The array rule of guide vane 0220 is depending on the concrete 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.Aforementioned in the flat-shaped cavity constructions of 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 in it close to one end of water conservancy diversion input terminal 0211
Structure keeps the water conservancy diversion input terminal 0211 of water conservancy diversion runner more round and smooth, further decreases obstruction when shunting and loss, make turbulivity into
One step reduces.
Exemplarily, there is consistent variation to become for guide vane 0220 and the one side wall face of its immediate diversion cavity 0212
Gesture keeps the surface of each water conservancy diversion runner more smooth, ensures that the flowing of shunting body is smooth.For example, in the arc-shaped curved surface in two side
In flat-shaped cavity constructions, guide vane 0220 has curved surfaces, and the fluctuating rule of its curved surfaces is unanimously to and its homonymy
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 of arrangement form has concentric relation.Please refer to Fig. 6~7, another kind demonstration, water conservancy diversion input terminal 0211
It can be the axially extending conduit along 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 conducts oneself with dignity
Effectively reduce.
In all examples being illustrated and described herein, any occurrence should be construed as merely illustrative, without
It is as limitation, therefore, other examples of exemplary embodiment can have different values.
It should be noted that:Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot limitation of the scope of the invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection model of the present invention
It encloses.Therefore, protection scope of the present invention should be determined by the appended claims.