CN207013276U - Screening plant and titanium alloy powder screening system - Google Patents

Abstract

The utility model provides a screening plant and titanium alloy powder screening system belongs to 3D printing powder screening production technical field, including throwing the material subassembly, screening subassembly and vacuum material loading subassembly, the screening subassembly includes the rack, screen cloth main part and guide, the guide has first opening, the second opening, enclose the guide wall of direction passageway, the guide is installed in the rack, first opening configures into accepts the material of following the screen cloth main part and falling down, the guide wall configures into accepts the material that falls down from first opening part and guides the material to the second opening part, vacuum material loading subassembly configures into collects and puts in to throwing the material subassembly following the material after the screening of screen cloth main part. This screening plant is in the use, and the material that falls down after the screening from the process in the screen cloth main part can be concentrated and fall into the next stage screening and sieve on the net again, and the material does the spiral along with swaing of screen (ing) machine and gradually open the motion, sieve effectual, difficult jam screen cloth main part, and can carry out a lot of screening, increase of production.

Description

Screening plant and titanium alloy powder screening system

Technical field

The utility model is related to 3D printing powder sieving production technical field, in particular to a kind of screening plant with And titanium alloy powder screening system.

Background technology

Selective laser fusing metal 3D printing technique (Selective laser melting, SLM) focuses on light using accurate The preset metal dust from level to level completed of spot rapid melting, it can almost directly obtain arbitrary shape and there is complete metallurgical junction The function part of conjunction.Consistency can reach intimate 100%, is a kind of rapid shaping technique of great development prospect, is especially navigating There is particularly important application prospect in the fields such as empty space flight, medical treatment, automobile, mould.SLM technologies use superfine spherical powder as former Material, usual 30-60 μm of powdering thickness (most thin powdering thickness is up to 20 μm).In order to shape to obtain even density, performance is consistent Part, its requirement of various performance parameters to powder is extremely harsh, and especially distribution of particles is evaluation powder property most critical One of parameter index.Therefore powder in production, selects a kind of stabilization effectively to sieve mode particularly critical.

In actual production, using traditional circular impact screen or the swing sieve that shakes, clogging is also easy to produce in screening, And exist and yield poorly, screen cloth service life is short, the problem of frequently changing.In addition, while production efficiency is reduced, also increase Multi-pass operation and the quality unstability factor brought, largely have impact on the quality fluctuation of aviation 3D printing powder, Form the quality unstability factor of follow-up 3D printing process.

Utility model content

The purpose of this utility model is to provide a kind of screening plant, is being sieving through with the powder sieving equipment for improving traditional Easily occurs the problem of screen cloth blocking causes screen cloth service life short and yielded poorly in journey.

The purpose of this utility model is to provide a kind of titanium alloy powder screening system, set with the powder sieving for improving traditional It is standby easily to occur the problem of screen cloth blocking causes screen cloth service life short and yielded poorly in screening process.

What embodiment of the present utility model was realized in：

Based on above-mentioned first purpose, the utility model provides a kind of screening plant, including the component that feeds intake, Screen assemblies with And vacuum feeding component, the Screen assemblies include rack, screen cloth main body and guide, the screen cloth main body is installed on described In rack, the guide has the first opening and the second opening and the guiding wall for surrounding guide channel, first opening Bore be more than the bore of the described second opening, the guide is installed on the rack, and first opening is configured to accept The material fallen from the screen cloth main body, the guiding wall are configured to accept the material that is fallen from first opening and by things Material guiding to second opening, the component Configuration that feeds intake is thrown in the screen cloth main body into by material, the vacuum Loading assemblies are configured to the material collection after being sieved from the screen cloth main body and are thrown to the component that feeds intake.

In the utility model preferred embodiment, the area of section perpendicular to its axis of the guide channel is along its axle Line is open from described first and is gradually reduced to the direction of the described second opening.

In the utility model preferred embodiment, the Screen assemblies also include screen frame and clip, and the screen frame is set It is equipped with multiple, annular slot is formed at the link position of the adjacent screen frame, the rack is connected in the annular slot, and Sealing joint strip is provided between the bottom land of the outer peripheral face of the rack and the annular slot；The clip is clamped on adjacent described Screen frame is outer and shelters from the connection gap of the adjacent screen frame；Positioned at the relative with the guiding piece another of the screen cloth main body The screen cloth of side at the contact position of the rack with being provided with seal washer.

In the utility model preferred embodiment, the vacuum feeding component includes the interim storage warehouse of powder and rotation Wind separator, the interim storage warehouse of powder be provided with the vaccum exhaust outlet for being configured to connect with vavuum pump, storage chamber and with The powder inlet and powder discharging opening that the storage chamber is connected；The cyclone separator is installed in the storage warehouse, described The import of cyclone separator connects with the powder inlet, and blanking outlet and the storage chamber of the cyclone separator connect Logical, the air exit of the cyclone separator connects with the vaccum exhaust outlet.

In the utility model preferred embodiment, the vacuum feeding component also includes feed tube, the feed tube Both ends are respectively feed openings and discharge openings, and the feed tube is detachably connected with the interim storage warehouse of the powder, and described Feed openings connect with the powder discharging opening.

In the utility model preferred embodiment, the feed tube includes cylindrical section and the conically shaped section being connected, institute State the first opening to be located at the port of the remote conically shaped section of the cylindrical section, second opening is located at the conically shaped At the port of the remote cylindrical section of section, the port that the bore of the conically shaped section is larger connects the cylindrical section；The circle Cylinder section is connected with the interim storage warehouse of the powder.

In the utility model preferred embodiment, the component that feeds intake includes the mobile storage tank that feeds intake, raw material storage tank, automatic It is fed module and feed promotes passage, the movement storage tank that feeds intake connects with the raw material storage tank, the autofeed module It is configured to accept the material fallen at the raw material storage tank and be delivered to the feed to promote passage, the feed promotes passage Connect the charging aperture of the Screen assemblies；The powder discharging opening of the vacuum feeding component connects the raw material storage tank.

In the utility model preferred embodiment, the component that feeds intake also includes oxygen determination and measuring pressure Instrument assembly.

In the utility model preferred embodiment, the component that feeds intake also includes feed intake stair and feeding platform.

Based on above-mentioned second purpose, the utility model provides a kind of titanium alloy powder screening system, including described sieve Separating device.

The beneficial effect of the utility model embodiment is：

In summary, the utility model embodiment provides a kind of screening plant, and its is simple and reasonable, is easy to manufacture to add Work, installation with easy to use, meanwhile, the screening plant in use, from falling after screening in screen cloth main body Material can put together to drop on next stage Screening Network and be sieved again, and material waving to spin and gradually open with screen(ing) machine Motion, screening effect is good, is not easily blocked screen cloth main body, and can repeatedly be sieved, and improves yield.It is specific as follows：

The screening plant that the present embodiment provides, including the component that feeds intake, Screen assemblies and vacuum feeding component, Screen assemblies bag Screen cloth main body has been included, for installing the rack of screen cloth main body, and has made material collection for directing material in material dropping process In guide.When being sieved, material is launched at the component that feeds intake, material is introduced into upper screen main body, is sieving In the presence of machine, material is completed to sieve for the first time in screen cloth main body, is opened by the material of screen cloth main body from the first of guide Enter in guide channel, and fall on guiding wall at mouthful, material slides along guiding wall, and is fallen from the second opening, falls Enter into next stage sieve unit, because material is more concentrated in the presence of guiding wall, drop into next stage screen cloth main body Material concentrate, material is spinned under the effect of waving of screen(ing) machine and gradually opens motion, and the screening effect of material is good, and in screening process Middle material can be kept in motion for a long time, i.e., spinned on screen cloth and gradually open motion, be not easy to stop during material screening In a certain region, screening effect is both improved, while is not easily blocked screen cloth main body.The material fallen from screen cloth main body is by true The function of empty loading assemblies, the component that feeds intake is delivered to again, can realize the multiple screening of material.

The titanium alloy powder screening system that the present embodiment provides includes above-mentioned screening plant, has above-mentioned screening plant All advantages.

Brief description of the drawings

, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also To obtain other related accompanying drawings according to these accompanying drawings.

Fig. 1 is the schematic diagram of the screening plant of the utility model embodiment；

Fig. 2 is the schematic diagram of the powder sieving system of the utility model embodiment；

Fig. 3 is the screen cloth main body of the utility model embodiment and the connection diagram of rack；

Fig. 4 be Fig. 2 in A-A to schematic cross-sectional view；

Fig. 5 is the schematic diagram of the rack of the utility model embodiment；

Fig. 6 is the schematic cross-sectional view of the guide of the utility model embodiment；

Fig. 7 is the schematic diagram of the Screen assemblies of the utility model embodiment；

Fig. 8 is the schematic diagram of the vacuum feeding component of the utility model embodiment；

Fig. 9 is the schematic diagram of the feed tube of the utility model embodiment；

Figure 10 is the schematic diagram of the retaining mechanism of the utility model embodiment.

Icon：1- feeds intake component；11- moves the storage tank that feeds intake；12- raw material storage tanks；13- autofeed modules；14- Feed promotes passage；15- feeds intake stair；16- feeding platforms；2- Screen assemblies；100- sieve units；110- racks； The annulus of 111- first；The annulus of 112- second；120- screen cloth main bodys；130- guides；131- guiding walls；132- first is opened Mouthful；133- second is open；200- screen frames；210- conically shapeds portion；220- circular cylinders portion；300- lids；310- charging holes； 400- clips；500- sealing joint strips；600- seal washers；700- rewinding tanks；710- second level rewinding tank；800- vacuum Loading assemblies；The interim storage warehouse of 810- powder；811- storage chambers；812- vaccum exhaust outlets；813- charging apertures；814- goes out Material mouth；820- cyclone separators；840- feed tubes；841- cylindrical sections；842- conically shaped sections；843- feed openings； 844- discharge openings；850- retaining mechanisms；851- retaining rings；852- clamping screws；860- exhaust gas filter units；870- Mounting bracket；871- montants；872- cross bars.

Embodiment

It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Generally here described in accompanying drawing and The component of the utility model embodiment shown can be configured to arrange and design with a variety of.

Therefore, the detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit requirement below The scope of the utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of the utility model protection.

It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.

, it is necessary to explanation, the orientation of the instruction such as term " on ", " under ", " interior ", " outer " in description of the present utility model Or position relationship be based on orientation shown in the drawings or position relationship, or the utility model product using when usually put Orientation or position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply signified dress Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model Limitation.In addition, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicating or implying relatively important Property.

In description of the present utility model, it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set Put ", " installation ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.

It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the utility model can To be mutually combined.

Screening plant embodiment

Referring to Fig. 1, a kind of screening plant is present embodiments provided, including the component 1 that feeds intake, Screen assemblies 2 and vacuum Loading assemblies 800.

Referring to Fig. 1, the component 1 that feeds intake include the mobile storage tank 11 that feeds intake, raw material storage tank 12, autofeed module 13, to Material promotes passage 14, oxygen determination and measuring pressure Instrument assembly, feed intake stair 15 and feeding platform 16.

The mobile storage tank 11 that feeds intake is taper tubular, and one end of the mobile storage tank 11 that feeds intake is feed inlet, and the other end stores up with raw material Tank 12 connects.Raw material storage tank 12 promotes passage 14 to connect by pipeline with feed, and autofeed module 13 is arranged on raw material storage tank Between 12 and feed propulsion passage 14, the material entered at raw material storage tank 12 in feed propulsion passage 14 can be controlled.Survey Oxygen and measuring pressure instrument are prior art, and its 26S Proteasome Structure and Function is not improved in the present embodiment, in order to avoid narration repeats Burden, herein without describing in detail.The stair 15 that feed intake are arranged on by the mobile storage tank 11 that feeds intake, and worker is right by the stair 15 that feed intake The mobile storage tank 11 that feeds intake carries out the addition of material.Feeding platform 16 is arranged on and fed intake on stair 15, is stood for worker.

Referring to Fig. 2, Screen assemblies 2 include sieve unit 100, screen frame 200, lid 300, clip 400, sealing joint strip 500th, seal washer 600, rewinding tank 700 and screen(ing) machine (not shown).

Fig. 3-Fig. 5 is referred to, each sieve unit 100 includes rack 110, screen cloth main body 120 and guide 130.

Refer to Fig. 4 and Fig. 5, rack 110 is annular shape, and rack 110 includes integrally formed first annulus 111 and the Two annulus 112, the section configuration of the first annulus 111 is rectangular-shaped, and the end surface shape of the second annulus 112 is rectangular-shaped, the first circle Ring 111 is coaxially disposed with the second annulus 112, and the second annulus 112 is located on the end face of the first annulus 111, the first annulus 111 The inner peripheral surface of inner peripheral surface and the second annulus 112 is located on the same face of cylinder, and the outer circumference surface of the first annulus 111 is justified along first The outer circumference surface of outwardly second annulus 112 of radial direction of ring 111, the i.e. section configuration of rack 110 are L-shaped.It is optional , the end face of the outer circumference surface of the first annulus 111 and the periphery side face support of the second annulus 112 is arranged to the conical surface.

Referring to Fig. 3, screen cloth main body 120 is circle, mesh is provided with screen cloth main body 120.Screen cloth main body 120 is arranged on On rack 110, the external diameter of screen cloth main body 120 is equal with the diameter of the inner peripheral surface of rack 110, the outward flange of screen cloth main body 120 Inner peripheral surface with rack 110 by way of bonding is connected, and optionally, screen cloth main body 120 is arranged on into the second annulus 112 On inner peripheral surface.

Obviously, in actual use, the specification of screen cloth main body 120 selects on demand, i.e., is selected according to being actually needed The screen cloth main body 120 of different-diameter mesh, realizes different grades of screening.

Referring to Fig. 6, guide 130 is tubular structure, guide 130 is provided with guide channel and with leading to positioned at guiding First opening 132 at road both ends and the second opening 133, guide channel is surrounded by guiding wall 131.The bore of first opening 132 is big In the bore of the second opening 133, the first opening 132 is located at the lower section of screen cloth main body 120, for accepting from screen cloth main body 120 The material fallen in mesh, the material entered from the first opening 132 slides along guiding wall 131, and slides at the second opening 133 And skidded off at the second opening 133.

Guide 130 is cylinder-like structure, structure and screen cloth main body 120 and the structure phase of rack 110 of guide 130 Adapt to, the cross sectional shape of its axis of the mistake of guide 130 be isosceles trapezoid, namely the first opening 132 and second is open and 133 is Circular open, the guide channel of guide 130 is circle perpendicular to the section of its axis direction, and guiding wall 131 is circular conical surface, The pore size of guide channel is gradually reduced along its axis direction from the direction of the first opening 132 to the second opening 133, guide 130 be in funnel-form.Guide 130 first opening 132 where one end be bonded on rack 110, the axis of guide 130 with The axis collinear of screen cloth main body 120, the center of circle of the second opening 133 of guide 130 are located on the axis of screen cloth main body 120, Center position of the projection along its axis direction of i.e. second opening 133 positioned at screen cloth main body 120.

Referring to Fig. 7, screen frame 200 is cylindrical shape, screen frame 200 is annular perpendicular to the section of its axis direction, is sieved Frame 200 is used to install rack 110, and multiple screen frames 200 are arranged in an overlapping arrangement, are formd at the link position of adjacent screen frame 200 Annular slot, the circle that is shaped as perpendicular to its section of annular slot, the axis of the axis and screen frame 200 of annular slot are total to Line.Optionally, the both ends along its axis direction of screen frame 200 be respectively arranged with the conically shaped portion 210 turned up and with conically shaped portion The circular cylinder portion 220 of 210 end connection, the bearing of trend in circular cylinder portion 220 is with the bearing of trend of screen frame 200 on the contrary, taper Cylinder portion 210, circular cylinder portion 220 and screen frame 200 are coaxially disposed.

Referring to Fig. 2, lid 300 is circular lid, the axis of screen cloth main body 120 crosses the center of circle of lid 300, on lid 300 Charging hole 310 is provided with, charging hole 310 is located at the center of lid 300.The lid of lid 300 is mounted in the screen cloth positioned at the superiors In main body 120, lid 300 is connected with screen frame 200.

Clip 400 has rounded clamping mouth and two clamping ends, and two clamping ends are close to each other to reduce clamping mouth Bore so that realize will be locked positioned at the intraoral screen frame 200 of clamping.

The powder sieving system that the present embodiment provides, including multilayer screen cloth main body 120, the mesh of multilayer screen cloth main body 120 Aperture is gradually reduced from feed end to direction of discharge, realizes the function of fine screen after first primary dcreening operation.Every layer of screen cloth main body 120 is arranged on On one rack 110, screen cloth main body 120 is adhesively fixed with rack 110.One rack is installed between two neighboring screen frame 200 110, the rack 110 is connected in annular slot, meanwhile, in the end face of the second annulus 112 of rack 110 and corresponding screen frame Seal washer 600 is provided between 200, is arranged a clip 400 outside adjacent screen frame 200, adjacent screen frame 200 passes through clip 400 It is in clamping connection, and sealing joint strip 500, sealing joint strip 500 is provided between the outer circumference surface and adjacent screen frame 200 of rack 110 With the collective effect of seal washer 600, the sealing of sieve unit 100 is added, avoids powder leakage, and avoid external environment condition Powder quality on the dust and gases affect screen cloth main body 120 of entrance, in addition, in actual screening process, whole device is done With screen frame 200 relative motion, fluid sealant can occur for oscillating motion, the sealing joint strip 500 between screen frame 200 and rack 110 Abrasion can be entered in the powder of screen cloth main body 120 by the space between rack 110 and screen frame 200 caused by bar 500, And then contaminated powders, therefore, seal washer 600 is provided with the present embodiment between rack 110 and screen frame 200, is effectively improved Abrasion enters screen cloth main body 120 caused by sealing joint strip 500, and the powder in screen cloth main body 120 is not easy to be contaminated.

In screening process, powder material enters from the charging aperture 310 on lid 300, and powder enters screen cloth main body 120 Medium position upper and positioned at screen cloth main body 120, when screen(ing) machine moves and drives Screen assemblies 2 to do oscillating motion, powder is helically Motion is gradually opened, screening effect is good, and material can be kept in motion for a long time in screening process, be not easily blocked mesh.Meanwhile Powder in upper screen main body 120 is introduced into guide 130 after screening, is made in the guiding of guide 130 Under, guiding wall 131 of the scattered powder along guide 130 pools together to be fallen at the second opening 133, has fallen on position In in the screen cloth main body 120 of lower section, and positioned at the medium position of screen cloth main body 120, now, powder material is in screen cloth main body 120 On spin and gradually open motion, sieved, so circulation, realize the screening of powder.In whole screening process, powder is not easily blocked Mesh, the service life of screen cloth main body 120 length, and screening effect is good.

Obviously, when being sieved, the screening per one-level has the powder filtered, namely the powder that particle is larger, by mistake The powder of filter is by pipeline transportation into corresponding rewinding tank 700.Powder material in rewinding tank 700 as needed can be with Carry out repeating screening again, improve yield.During actual screening, including three-layer screen main body, i.e., it can realize that three-level is sieved, meanwhile, Three rewinding tanks are provided with, each rewinding tank is used to collect the material left in every grade of screen cloth main body.

Screen(ing) machine drive connection Screen assemblies 2, make Screen assemblies 2 do oscillating motion.It should be noted that sieve is existing skill Art, its operation principle and concrete structure are not elaborated in the present embodiment.

It should be noted that guide 130 is used for the guiding for realizing material, material is guided to the second opening 133, thing Material more concentrate, therefore, in other embodiments, guide 130 is made up of four equicrural ladder plates, four equicrural ladder plates according to Secondary connection surrounds tubular structure, and the side of four equicrural ladder plates surrounds the first opening 132, the opposite side of four equicrural ladder plates The second opening 133 is surrounded, guide 130 is square perpendicular to the section of its axis direction.The bore of guide 130 along its Axis direction is gradually reduced from the direction of the first opening 132 to the second opening 133, forms similar funnelform structure.It is corresponding, Screen cloth main body 120 is square structure, and rack 110 is square structure, and rack 110 has the installing port of square shape.

Referring to Fig. 8, vacuum feeding component 800 includes the interim storage warehouse 810 of powder, cyclone separator 820, vavuum pump (not shown), feed tube 840, retaining mechanism 850, exhaust gas filter unit 860 and peace pivoted frame 870.

The interim storage warehouse 810 of powder is cylindrical tube structure, the interim storage warehouse 810 of powder perpendicular to its axis direction Section be annular shape, the interim storage warehouse 810 of powder is provided with the storage chamber 811 of cylindrical shape, is connected with the storage chamber 811 Powder inlet 813 and powder discharging opening 814, and the vaccum exhaust outlet 812 connected with storage chamber 811.In the present embodiment, Optionally, vaccum exhaust outlet 812 is arranged on an end face along its axis direction for storage warehouse, by powder inlet 813 It is arranged on the perisporium of the interim storage warehouse 810 of powder, optionally, installation is provided with the perisporium of the interim storage warehouse 810 of powder Projection, the raised radial direction along the interim storage warehouse 810 of powder of installation protrude the outer peripheral face of perisporium, and installation projection is tubulose knot Structure, powder inlet 813 are the raised tube chamber of installation, and tube chamber connects with storage chamber 811.Powder discharging opening 814 is designed in powder On one end face of the remote vaccum exhaust outlet 812 of last interim storage warehouse 810, i.e. vaccum exhaust outlet 812, powder inlet 813 It is intervally arranged successively with axis direction interval of the powder discharging opening 814 along the interim storage warehouse 810 of powder.

Cyclone separator 820 includes conical shell, the import that is connected on conical shell and with the inner chamber of conical shell, Blanking exports and air exit, and import is located between air exit and blanking outlet, and blanking outlet is positioned at the straight of conical shell The less one end in footpath, air exit are located at one end being relatively large in diameter of conical shell.Cyclone separator 820 is to be used for gas-solid system A kind of or equipment of the separation of liquid-solid system.Operation principle is rotary motion caused by being introduced tangentially into by air-flow, make to have compared with The solid particle or drop of big centrifugal inertial force get rid of to outside wall surface and separated, and cyclone separator 820 uses vertical cylinder structure, internal It is divided into liquid collecting zone, cyclone separation, area of clean room etc. vertically.The major function of the equipment of cyclone separator 820 is to remove as far as possible The solid particle polluter and drop carried in mixture is removed, reaches gas-solid-liquid separation, to ensure the normal operation of pipeline and equipment. The separating effect of cyclone separator 820：Under the conditions of design pressure and tolerance, >=10 μm of solid particle can be removed.Whirlwind Separator 820 is applied to non-sticky of the purification more than 1-3 microns, the dried dust of non-fiber.

Vavuum pump refers to using machinery, physics, chemically or physically chemical method is evacuated to being taken out container and obtained The device or equipment of vacuum.For popular, vavuum pump is to improve, produce and maintain true in a certain closing space with various methods Empty device.In the present embodiment, vavuum pump is prior art, and its 26S Proteasome Structure and Function is not improved, in order to avoid narration weight Multiple burden, herein without describing in detail.

Referring to Fig. 9, feed tube 840 includes cylindrical section 841 and conically shaped section 842, cylindrical section 841 perpendicular to its axle The section in line direction is annular, and the both ends of cylindrical section 841 are opening, the cutting perpendicular to its axis direction of conically shaped section 842 Face is annular shape, and conically shaped section 842 includes necking end and opening end, and necking end and opening end are opening, conically shaped section 842 Opening end connects with the Single port of cylindrical section 841.One end of the remote conically shaped section 842 of cylindrical section 841 is feed openings 843, One end (necking end) of the remote cylindrical section 841 of conically shaped section 842 is discharge openings 844.Feed openings 843 are circular port, are gone out Material opening 844 is circular port.

Optionally, cylindrical section 841 is integrated machine-shaping with conically shaped section 842.

Referring to Fig. 10, retaining mechanism 850 is used to realize the interim storage warehouse 810 of powder and the connection of feed tube 840.Locking Mechanism 850 includes retaining ring 851 and clamping screw 852, and retaining ring 851 has keeper, and the both ends of retaining ring 851 are locking End, the both ends of retaining ring 851 are spirally connected by clamping screw 852, by adjusting clamping screw 852, can change the big of keeper The object in keeper is locked in small and then realization, can also be connected two objects in keeper.Can Choosing, each locking end is provided with through hole, the screw rod of clamping screw 852 passes through two through holes of two locking ends, Ran Houfen Be not spirally connected nut at the both ends of screw rod, and the locking of two locking ends is realized by screwing nut.

Optionally, retaining ring 851 is bent to form for rectangular strip, and retaining ring 851 has inner peripheral surface and outer peripheral face, is locking The inner peripheral surface of ring 851 sets elastic layer.

Exhaust gas filter unit 860 includes multistorey strainer mesh, and multistorey strainer mesh is arranged in a manner of being laminated.

Peace pivoted frame 870 includes support bar, and support bar includes montant 871 and cross bar 872, one end installation of montant 871 In the stair 15 that feed intake, the other end of montant 871 is vertically installed with cross bar 872.

The titanium alloy powder screening system that the present embodiment provides, the interim storage warehouse 810 of powder is arranged on cross bar 872, The interim storage warehouse 810 of powder is vertically arranged, the discharging opening 814 of the interim storage warehouse 810 of powder and the feed openings of cylindrical section 841 843 connections, the interim storage warehouse 810 of powder are connected by retaining ring 851 with cylindrical section 841, the bullet on the inner peripheral surface of retaining ring 851 Property layer simultaneously be fitted in outside the interim storage warehouse 810 of powder and cylindrical section 841, screw clamping screw 852 by the interim storage warehouse of powder 810 and cylindrical section 841 realize connection, now, elastic layer crimp, both play a part of improving sealing, while powder faces When storage warehouse 810 and cylindrical section 841 it is not easy to wear.It is interim that cyclone separator 820 and exhaust gas filter unit 860 are arranged on powder In storage warehouse 810, the import of cyclone separator 820 connects with charging aperture 813, the blanking outlet and discharging of cyclone separator 820 Mouth 814 connects, and the air exit of cyclone separator 820 after exhaust gas filter unit 860 with vaccum exhaust outlet 812 by connecting, very Empty pump is connected at vaccum exhaust outlet 812.The interim storage warehouse of powder is arranged on cross bar.

The second level rewinding tank 710 of Screen assemblies 2 passes through hoseline and the charging aperture 813 of the interim storage warehouse 810 of powder Connect, the charging hole pipeline on lid connects with the necking end of feed tube 840.During work, start vavuum pump, stored up temporarily to powder Storage 810 vacuumizes, and forms negative pressure, and it is interim that the powder in second level rewinding tank 710 due to the formation of pressure difference is brought to powder Storage warehouse 810, powder are spinned along the outer wall of cyclone separator 820 and moved, and fall on the interim storage warehouse 810 of powder so that solid Separated with gas, air exit of the gas through cyclone separator 820, then taken out through multiple filtration net at vaccum exhaust outlet 812 Walk, wherein, there is minimal residue to be blocked on exhaust gas filter unit 860 in gas, drop back into the interim storage warehouse 810 of powder again without quilt Gas is taken away.Powder in the interim storage warehouse 810 of powder is dropped into raw material storage tank 12 by feed tube 840, Ran Houjing Cross autofeed component, feed is promoted to enter in the screen cloth main body on upper strata after passage 14 and sieved again, so circulation.By There is conically shaped section 842 in feed tube 840, powder is more prone to drop into the charging hole 310 of Screen assemblies 2.

Whole screening plant is compact-sized, is not easily blocked screen cloth main body during powder sieving, meanwhile, powder after screening It can be automatically drawn into raw material storage tank 12 and be sieved herein, improve yield.

, can be with for the ease of vacuumizing and controlling powder towards the blanking speed of Screen assemblies 2 and the number of blanking amount Valve is set at discharging opening 814 and charging aperture 813.

Optionally, watch window is set on the screen frame of Screen assemblies 2, and Screen assemblies 2 are sieved for three-level, in every grade of screening One watch window is set on the screen frame of system, can clearly observe the working condition of powder inside screening.Stored up in screen(ing) machine and raw material Gas monitor mouth is set respectively on tank 12, and two gas monitor mouths are respectively connecting to the oxygen determination and measuring pressure instrument group of screening plant In part, and the oxygen content and pressure inside screening system are automatically controlled using PLC, to ensure working environment in admissible scope It is interior.

Titanium alloy powder screening system embodiment

Present embodiments provide a kind of titanium alloy powder screening system, including the screening plant that above-described embodiment provides. When carrying out titanium alloy powder screening, according to following steps：

1) according to the type of raw materials of required screening and screening specification requirement, mesh number is selected suitably to preselect screen cloth and fine screen Screen cloth；100 microns such as are selected for 3D printing titanium alloy powder, pre-selection screen cloth, fine screen screen cloth selects 45 microns；

2) whether check screening system power supply, gas supply etc. supply normal；Power supply instruction is normal, inert gas pressure 0.2Mpa, open general supply and supply master switch；

3) the protective gas target set point 500ppm of screening system, pressure set points 0.05-0.1Mpa, system are adjusted Automatic replacing air function is opened, and the oxygen content in system is dropped to below sets requirement, system pressure difference stabilization is being set Within provisioning request, whole process about 20min, reach desired value rear substitution and terminate；

4) raw material for needing to sieve are put into raw material storage tank 12 successively by the mobile storage tank 11 that feeds intake, opened automatic Screening switch, system pre-set ultrasonic frequency vibratory, delivery rate, under the technological parameter such as swinging screen electric machine frequency Carry out automatic sieving work；

5) powder material falls on autofeed module 13 from raw material storage tank 12 by delivery pipe, and vibrator is promoted in material Under effect, powder is pushed ahead with given speed, flows to the center of sieving machine, and delivery rate is set in 20kg/ hours, feed Process can be observed by being fed monitoring mouth, to judge whether feed is completed；Powder is fallen on pre-selection screen cloth, with shaking for screen(ing) machine Pendulum, which is spinned, gradually opens motion, and the powder preselected is fallen on lower floor's fine screen screen cloth, then proceeds by screening；In screening process certainly Oxygen content and pressure value in dynamic make-up system meeting real-time monitoring system, as being unsatisfactory for, can feed displacement automatically；

6) first circulation feed terminates, and powder carries out regrading in second level rewinding tank 710, and sieve system is gone back to by automatic cycle System is completed.Start vacuum feeding component 800, the powder in second level rewinding tank 710 is by feed back delivery pipe, through powder inlet Vacuum feeder is entered, and separates powder and gas by cyclone separator, by powder storage in the interim storage warehouse of powder In, then in the raw material warehouse through powder discharging opening inflow screening plant, carry out regrading；After regrading terminates, observation the The blanking situation of three-level rewinding tank, such as blanking amount is less than 300g per hour, then means that screening is completed, i.e., it is micro- to be finely sized to 45 The powder of rice all sifts out.

Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.

Claims (10)

1. a kind of screening plant, it is characterised in that including the component that feeds intake, Screen assemblies and vacuum feeding component, the screening Component includes rack, screen cloth main body and guide, and the screen cloth main body is installed in the rack, and the guide has the One opening and the second opening and the guiding wall for surrounding guide channel, the bore of first opening are more than the described second opening Bore, the guide are installed on the rack, and first opening is configured to accept the material fallen from the screen cloth main body, The guiding wall is configured to accept the material fallen from first opening and guides material to second opening, institute State the component Configuration that feeds intake to be thrown in the screen cloth main body into by material, the vacuum feeding component Configuration is into will be from the screen cloth Material collection after being sieved in main body is simultaneously thrown to the component that feeds intake.

2. screening plant according to claim 1, it is characterised in that the guide channel perpendicular to the section of its axis Area is open along its axis from described first and is gradually reduced to the direction of the described second opening.

3. screening plant according to claim 1, it is characterised in that the Screen assemblies also include screen frame and clip, The screen frame is provided with multiple, annular slot is formed at the link position of the adjacent screen frame, the rack is connected to the ring In shape neck, and sealing joint strip is provided between the bottom land of the outer peripheral face of the rack and the annular slot；The clip card Tightly outside the adjacent screen frame and shelter from the connection gap of the adjacent screen frame；Positioned at the screen cloth main body and the guiding The screen cloth of the relative opposite side of part at the contact position of the rack with being provided with seal washer.

4. according to the screening plant described in claim any one of 1-3, it is characterised in that the vacuum feeding component includes The interim storage warehouse of powder and cyclone separator, the interim storage warehouse of powder are provided with the vacuum for being configured to connect with vavuum pump Exhaust outlet, storage chamber and the powder inlet being connected with the storage chamber and powder discharging opening；The cyclone separator installation In the storage warehouse, the import of the cyclone separator connects with the powder inlet, the blanking of the cyclone separator Outlet connects with the storage chamber, and the air exit of the cyclone separator connects with the vaccum exhaust outlet.

5. screening plant according to claim 4, it is characterised in that the vacuum feeding component also includes feed tube, institute The both ends for stating feed tube are respectively feed openings and discharge openings, and the feed tube detachably connects with the interim storage warehouse of the powder Connect, and the feed openings connect with the powder discharging opening.

6. screening plant according to claim 5, it is characterised in that the feed tube includes the cylindrical section and cone being connected Shape cylinder section, at the port of the remote conically shaped section of the cylindrical section, second opening is located at first opening At the port of the remote cylindrical section of the conically shaped section, the port that the bore of the conically shaped section is larger connects the cylinder Section；The cylindrical section is connected with the interim storage warehouse of the powder.

7. screening plant according to claim 1, it is characterised in that the component that feeds intake includes mobile feed intake storage tank, original Expect that storage tank, autofeed module and feed promote passage, the movement storage tank that feeds intake connects with the raw material storage tank, it is described oneself Dynamic feed module is configured to accept the material fallen at the raw material storage tank and be delivered to the feed to promote passage, described to give Material promotes the charging aperture of the passage connection Screen assemblies；The powder discharging opening of the vacuum feeding component connects the raw material storage Tank.

8. screening plant according to claim 7, it is characterised in that the component that feeds intake also includes oxygen determination and measuring pressure instrument Device assembly.

9. screening plant according to claim 7, it is characterised in that the component that feeds intake also includes feed intake stair and throwing Expect platform.

10. a kind of titanium alloy powder screening system, it is characterised in that including the screening according to claim any one of 1-9 Device.