CN102554246A - Totally-enclosed gas-atomizing powder preparation device for solving blockage of nozzle and liquid guiding pipe caused by high-melting-point material - Google Patents
Totally-enclosed gas-atomizing powder preparation device for solving blockage of nozzle and liquid guiding pipe caused by high-melting-point material Download PDFInfo
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Abstract
The invention discloses a totally-enclosed gas-atomizing powder preparation device for solving blockage of a nozzle and a liquid guiding pipe caused by a high-melting-point material. The totally-enclosed gas-atomizing powder preparation device consists of a heat-preserving crucible, an atomizer, an atomizing tower, a retractable plastic pipe A, a retractable plastic pipe B, a vacuum pump and the like, wherein the atomizer is installed in the retractable plastic pipe A, the retractable plastic pipe A is hermetically connected with the heat-preserving crucible and the upper surface of a nozzle of the atomizer, and the retractable plastic pipe B is hermetically connected with the atomizing tower and the lower surface of the nozzle, so that a totally-enclosed system structure, which can prevent the high-melting-point material from being generated on the atomizer, is formed; a gap is maintained between the liquid guiding pipe and a metal outer sleeve and used for installing a heating element A, and a heating element B is installed in a gap between the air outlet pipes of two Laval structures of the nozzle, so that the heating element A and the heating element B can be used for solving the problem of blockage caused by the high-melting-point material when being simultaneously powered on. The totally-enclosed gas-atomizing powder preparation device for solving the blockage of the nozzle and the liquid guiding pipe caused by the high-melting-point material, provided by the invention, has the advantages that the structure is simple, the installation is convenient, the blocking problem can be effectively avoided and solved, the powder quality can be improved and the like.
Description
Technical field
The present invention relates to make the ultra-fine powder technology field used a kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction when a kind of metal or alloy ultra-micro powder of more specifically saying so prepares with atomizing molten materials with gases.
Background technology
Along with development of modern science and technology, to the aspects such as kind, quality and cost of dusty material require increasingly high, the preparation of metal dust towards high-purity, fine, composition and controllable granularity and cheaply direction develop.The gas atomization technology is the main method of producing metal and alloy powder, and the basic principle of gas atomization is liquid metal to be flowed the process that is ground into droplet and is frozen into powder with a high velocity air.What vacuum atomizing powder process was adopted is the metal or metal alloy that melting obtains under vacuum condition; When they reach certain degree of superheat; Change in the insulation crucible (tundish) after being incubated reasonable time again; Under the condition of gas shield, these metal liquids flow out, by high-pressure inert gas stream the metal liquid atomizing are broken into a large amount of tiny drops through nozzle through mozzle, and these tiny drops are frozen into sphere or inferior spheric granules awing.Because drop is tiny good with the heat exchange condition, the condensation rate of drop generally can reach 100 ~ 10000K/s, and than the high several magnitude of the cooling of ingot casting, so metal powder particles is tiny, and the composition of alloy is even, organizes tiny.Vacuum atomizing powder process not only can prepare great majority can not be employed in metal and the alloy powder made from the water atomization method in the air thereof; And can produce the spherical or inferior spherical powder of many specific alloys; Have the sphericity height, powder size is controlled, oxygen content is low, production cost is low and adapts to multiple metal and the advantages such as production of alloy powder, amorphous phase, become the main developing direction of high-performance and special alloy powder preparation technology.
Atomizer in use often runs into the mozzle phenomenon of blocking and occurs in the prior art, and this is mainly caused by the reason of the following aspects:
The one, molten metal occurs solidifying because temperature reduces in flow process; The 2nd, the air-flow that nozzle penetrates can be ejected into the mozzle port more or less and produce cooling consumingly, flow is solidified block mozzle and nozzle; The 3rd, the negative pressure turbulent region of mozzle below makes molten drop splash jet hole and causes and block; The 4th, because backwash appears in molten drop in atomization process; Promptly the drop of atomizing is to the direction flight of aerodynamic atomization nozzle; The molten drop of backwash adheres to the lower end of aerodynamic atomization nozzle; And constantly solidify accumulation, finally cause the obstruction of aerodynamic atomization nozzle and mozzle and atomization process is interrupted; The 5th, when preparing alloy powder, gas atomization often is in the oxidizing atmosphere, and certainly will make the alloy powder surface that oxidation takes place; Even be under the protective atmosphere; But because protective gas is not pure fully; Therefore also unavoidably make the alloy powder surface that to a certain degree oxidation takes place, form the oxide thin layer film at powder surface, in case oxide-film forms certain thick layer; The drip gauge surface tension is entirely ineffective, influences the balling ratio of powder.Along with increasing of compound amount, can nozzle and mozzle be stopped up.In case nozzle and mozzle stop up, production can't be proceeded.When this situation occurring, the general way of enterprise is to stop to produce, and atomizer is pulled down mediation; But this way usually can not be dealt with problems; This mainly is because these high-melting-point melting point substances are generally higher, in this case, has only the mozzle of replacing and even whole atomizer.But also there are two problems in the method for changing, the one, run into the intrusion of oxygen in the air, nitrogen and other gas in the replacing process unavoidably, and their meeting oxidations, metal nitride have influenced product quality, and the 2nd, reduced efficient, increased production cost.
At present, the technology of atomizer being improved renewal has a lot, but seldom stops up the especially patent and the technology of oxide, nitride or other high-melting-point material blockage problem relevant for nozzle that how to solve atomizer and mozzle.The inventor is a kind of totally-enclosed powder by gas-atomization device that prevents that the high-melting-point material from stopping up in denomination of invention; The patent No. is to have mentioned a kind of problem that solves atomizer high-melting-point material plug nozzle and mozzle in the 201110452318.x patent application; But still exist because of thereby the long influence atomizing of distance powder between jet expansion and the atomizing point reaches the technical problem of desirable crushing effect, but the distance that shortens between jet expansion and the atomizing point causes easily that then nozzle and mozzle block.And this technical problem the present invention's technical problem that will solve just.
Summary of the invention
The object of the invention provides a kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction in order to solve above-mentioned technical problem, nozzle and mozzle metal that it can solve atomizer effectively stop up especially oxide, nitride or other high-melting-point material blocking problem.
Technical scheme of the present invention
A kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction comprises insulation crucible, atomizer, scalable plastic tube A, atomisation tower, scalable plastic tube B and vavuum pump etc.;
Wherein said atomizer comprises mozzle, nozzle, also comprises metal-coating, heater, ceramic annulus, metal ring, metallic packing ring and packing ring etc. in addition;
Described nozzle is provided with the escape pipe of two air inlet pipe and two Laval structures;
Angle between the axis of the escape pipe of two Laval structures of described nozzle is between 20 ° ~ 75 °;
Peripheral 10mm ~ 100mm the place of the escape pipe of each laval structure all is provided with the gap; Heater B all is installed in the gap; The metallic packing ring seal with screwed joint is all adopted in the end in the gap of the escape pipe of each Laval structure; The end at the place, gas outlet of the escape pipe of each Laval structure all is connected with metal ring, and described metal ring internal diameter is according to the escape pipe of laval structure, and the outer radius of metal ring adopts with the end of escape pipe and is threaded;
The upper end core of described metal-coating has the hole that adapts with the mozzle external diameter, and in order to mozzle to be installed, the lower end of metal-coating is uncovered, and mozzle was concentric with metal-coating when metal-coating was installed;
The lower edge of the upper end of described mozzle and the upper end of metal-coating are provided with the groove of corresponding recessed portion near corresponding position, the edge of internal diameter; The packing ring that plays the role of positioning is placed in the groove the inside, guarantees that finally the bottom of mozzle is concordant with the bottom of metal-coating;
Described packing ring adopts plastics or metal washer;
Heater A is installed in the gap that 10mm ~ 100mm is arranged between mozzle and the metal-coating in the gap; Mozzle does not directly contact with metal-coating, can prevent the conduction between heater A and the metal-coating on the one hand, can reduce scattering and disappearing of mozzle heat on the other hand greatly;
Be equipped with external power interface on described heater A and the heater B and be connected with extraneous power supply; In case in atomizer uses, take place under the situation of metal or low melting point obstruction; Can switch on simultaneously through heater A and heater B; Heating makes its fusing that heats up to tamper, solves the purpose that metal or alloy stops up thereby reach; Described extraneous power supply is 220V or 380V power supply;
In addition, preferably being provided with metallic reflective coating or spraying the formed reflecting layer of one deck white reflecting coating on the surface of metal-coating near heater A, is the energy that is used for reflecting heater A radiation, reduces the energy-conservation effect of energy loss thereby reach; The used coating of described white reflecting coating is preferably tin oxide;
Described ceramic annulus and mozzle uniform internal diameter, the external diameter of ceramic annulus have a boss less than metal-coating bottom internal diameter on the edge in the inner footpath of ceramic annulus, and this boss structure matches with the recessed portion of mozzle bottom;
The pottery annulus is installed to the bottom of mozzle and is embedded in the metal-coating; The boss of pottery annulus is embedded on the recessed portion of mozzle bottom; The pottery annulus adopts with metal-coating and is threaded; After installing, guarantee to protrude from the lower surface of metal-coating with the corresponding another side of boss one side is arranged on the ceramic annulus;
The inner surface spraying of pottery annulus is gone up and the material that often takes place to stop up; The material that is difficult to adhere to like metal, alloy liquation, metal oxide or metallic compound; Be used for preventing the accumulation of solidifying of oxide or other compound, thereby reach the purpose that prevents to stop up, solve obstruction at circular body surface; The selection of inner surface spraying material will be according to different atomization metals, and methods such as employing angle of wetting are confirmed;
Described mozzle, metal-coating, ceramic annulus, metallic packing ring, metal ring can be selected material different according to atomization metal or alloy powder difference;
Even that described mozzle can be selected is high temperature resistant, thermal insulation good, inertia, be easy to process or be difficult to process but can be made into the material of simple shape, like aluminium oxide ceramics, silicon nitride ceramics, boron nitride ceramics, zirconia ceramics, silicon carbide ceramics and other refractory ceramics;
But described metal-coating, metallic packing ring, metal ring selection intensity be high, be easy to process, inexpensive material, like carbon steel or stainless steel.
Described ceramic annulus is selected aluminium oxide ceramics, silicon nitride ceramics, boron nitride ceramics, zirconia ceramics or silicon carbide ceramics for use;
Described heater A and heater B are different, optional with electric furnace heating wire or silicon carbon rod according to atomization metal or alloy powder, and they play a role through the mode of installing or twine;
Above-mentioned scalable plastic tube A one end is tightly connected with insulation crucible one end; The upper surface of the nozzle of the other end and atomizer is tightly connected; Atomisation tower links to each other through scalable plastic tube B with the outside, gas outlet of the escape pipe of two Laval structures of the nozzle of the lower surface of nozzle; Scalable plastic tube A bottom is provided with the vavuum pump interface near the position of nozzle; External vavuum pump, the drain hole valve that the atomisation tower bottom is provided with is the atomisation tower valve, promptly forms by insulation crucible, scalable plastic tube A, nozzle, scalable plastic tube B, atomisation tower, atomisation tower valve and reaches the totally-enclosed system architecture of forming with the vavuum pump of scalable plastic tube A connection;
Described vavuum pump is conventional vacuum system, comprises all kinds of mechanical pumps, diffusion pump, molecular pump etc.;
Inner at scalable plastic tube A, insulation crucible one end that is connected with scalable plastic tube A is connected with through pipeline it on and is incubated the crucible valve, so that the use when vacuumizing of above-mentioned totally-enclosed system architecture inside;
Insulation crucible valve is that the pipeline of flat mouthful of loudspeaker is close to packing ring through bolt with the port of the mozzle of atomizer and is connected through an end again, and they all place the inside of scalability plastic tube A;
Get thing mouth A at scalable plastic tube A being provided with near the mozzle place; On the scalable plastic tube B between spray tower and the nozzle lower surface, be provided with and get thing mouth B, to make things convenient for exchanging for of article inside and outside the closed system near the position of ceramic annulus, metal ring and the metallic packing ring of atomizer;
On the described scalable plastic tube A get on thing mouth A and the scalable plastic tube B to get thing mouth B structure identical; Be respectively equipped with two layers of vacuum valve; Be internal layer vacuum valve and outer vacuum valve; Outer vacuum valve on it adopts the vacuum rubber pipe to be connected with extraneous multiple-pass joint, and the latter is connected near the continuous vavuum pump in the position of nozzle with above-mentioned scalable plastic tube A bottom again;
In addition, the thing mouth A both sides of getting on the scalable plastic tube A promptly respectively are provided with pair of glove corresponding to the upper limb place of bolt and metal-coating, with convenient mozzle, the metal-coating of atomizer are operated; Getting on the corresponding position, thing mouth B both sides of scalable plastic tube B, also be provided with two both hands covers, be used for that ceramic annulus, metal ring, metallic packing ring, two and half are foretold round metal cylindricality cylinder and operate;
Above-mentioned each gloves adopt adhesive to be connected with scalable plastic tube A and scalable plastic tube B respectively;
When from the totally-enclosed system, getting article, be placed on article in two spaces between the valve earlier, close the internal layer vacuum valve subsequently, open outer vacuum valve, take out article; And when article are put in the totally-enclosed system, open outer vacuum valve earlier, article are put in the space between internal layer vacuum valve and the outer vacuum valve; Subsequently this space is vacuumized, reach vacuum after, stop to bleed; Open the internal layer vacuum valve, article are put in the totally-enclosed system;
And when generation needs the transposing mozzle (as ftractureing for a long time in mozzle year), can in closed system, unload bolt through stretching scalable plastic tube, and mention metal-coating, take off mozzle, and through getting thing mouth A transposing; When mozzle is installed, at first in closed system, load onto mozzle, in the metal-coating of packing into subsequently, use the bolt metal-coating subsequently, accomplish the mozzle transposing;
And when generation needs the ceramic annulus of transposing, (block as the high-melting-point material takes place); At first through the gloves on the scalable plastic tube B; Utilize two and half to foretell the slip of round metal cylindricality cylinder on inside and outside two metallic channels on atomizer nozzle and the atomisation tower, open the internal structure of round metal cylindricality cylinder, utilize gloves subsequently; Screw off the ceramic annulus on the atomizer, and change through the thing mouth B that gets on the scalable plastic tube B; When ceramic annulus is installed, at first ceramic annulus is put into scalable plastic tube B through the thing mouth B that gets on the scalable plastic tube B, install the ceramic annulus on the atomizer then.
Described scalable plastic tube A and scalable plastic tube B; Its material adopts high-temperature resistance plastice; Coat glass fibre, the middle scalable exotic material that adopts the enhancing of stainless steel elastic helix steel wire, outside to form like its inside, like the flexible vent hose of high-temperature nylon for Polypropylence Sheet.Adopt scalable plastic tube A, conveniently under closed environment, atomizer is handled.
It is above-mentioned that a kind of to solve the totally-enclosed powder by gas-atomization Unit Installation process that nozzle and mozzle high-melting-point material block following:
At first in the gap of the escape pipe of two Laval structures of nozzle, heater B is installed all; In the end in the gap of the escape pipe of two Laval structures of nozzle metallic packing ring is installed all afterwards, in the end at the place, gas outlet of the escape pipe of two Laval structures of nozzle metal ring is installed all subsequently;
Then heater A is installed in the metal-coating the inside;
Put into mozzle in heater A inboard subsequently, the center of mozzle overlaps with the center of metal-coating, places ceramic annulus in exit, mozzle bottom afterwards;
Then above-mentioned atomizer is put into scalable plastic tube A, afterwards scalable plastic tube A is installed between insulation crucible and the nozzle;
On scalable plastic tube A, gloves are installed subsequently, got thing mouth A, heater A external power interface etc.;
Then between the outside, gas outlet of the escape pipe of two Laval structures of the lower surface nozzle of nozzle and spray tower, inside and outside two metallic channels and two and half are installed and are foretold round metal cylindricality cylinders;
At last between the lower surface of nozzle and spray tower, scalable plastic tube B etc. is installed, thereby accomplishes a kind of totally-enclosed powder by gas-atomization device installation that nozzle and mozzle high-melting-point material block that solves.
The above-mentioned a kind of application process of totally-enclosed powder by gas-atomization device in metal and alloy pulverizing process that solves nozzle and mozzle high-melting-point material obstruction, specific as follows:
Because a kind of improvement that solves the totally-enclosed powder by gas-atomization device of nozzle and mozzle high-melting-point material obstruction of the present invention; In the equipment use, at first close insulation crucible valve and atomisation tower valve, with vavuum pump scalable plastic tube A and scalable plastic tube B are vacuumized processing then; After waiting to be extracted into appropriate vacuum degree; Put into inert gas, when scalable plastic tube A and scalable plastic tube B internal pressure are superatmospheric, open the atomisation tower valve; Open insulation crucible valve subsequently and put into metal bath, carry out the powder atomizing and handle.If during the nozzle of atomizer takes place, when mozzle stops up, or change nozzle or mozzle or opening power, utilize heater A and heater B to heat-treat simultaneously to stopping up metal, impel its fusing, solve the blockage problem of mozzle and nozzle.Just in case under the situation that heat-treating methods does not prove effective, then through the two layers of vacuum valve that are provided with above the thing mouth B of getting on the scalable plastic tube B, transposing metal ring and ceramic annulus.
Technique effect of the present invention
A kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction of the present invention; Through changing the structure of atomizer; Install in the heater A in the gap between mozzle and metal-coating; Also in the gap of the escape pipe of two Laval structures of nozzle, heater B is installed all; Through heating simultaneously, can eliminate the low melting point tamper that metal or alloy forms effectively, can also the preheating atomization gas and molten metal played insulation effect; Can prevent effectively the cooled and solidified that produces in the flow process that molten metal causes because of reasons such as Changes in weather to take place thereby avoid nozzle and mozzle bottom to stop up the phenomenon that atomizing can't be continued.In addition; Adopt in the time of heater A and heater B; Can eliminate the interference of low melting point tamper, the rum point that therefore helps shortening air-flow and flow is to the distance of mozzle bottom and the speed of maintenance air-flow, and more small particle diameter and narrower size distribution powder granule are highly beneficial for obtaining for these.
A kind of solution in the totally-enclosed powder by gas-atomization device that nozzle and mozzle high-melting-point material block of the present invention; Because atomizer adopts closed system; The intrusion of oxygen, nitrogen or other gas in the atomizer unloading process be can avoid, the product quality that the shutdown that obstruction caused to nozzle and even mozzle brings and the loss of economic aspect prevented after the generation of high-melting-point materials such as oxide, nitride.
At present, the technology of atomizer being improved renewal has a lot, thereby existing powder by gas-atomization apparatus structure is numerous, different.Compare with existing atomizer; Atomizer provided by the invention belongs to a kind of whole closing appliance that solves nozzle and mozzle high-melting-point material obstruction; Not only can get rid of the generation of mozzle mouth of pipe oxide, nitride and other high-melting-point material, and can eliminate the low melting point tamper that metal or alloy forms through heating.
A kind of the solution in the totally-enclosed powder by gas-atomization device that nozzle and mozzle high-melting-point material block provided by the invention, most of parts adopt the metal material manufacturing, and are not only cheap, easy to process; Reusable; And mozzle is concordant with the metal-coating end, can prevent that the mozzle end from contacting with the high speed cold air-flow, and the mozzle heating status is significantly improved; Thermal shock resistance improves, and is difficult for bursting.Because the protection of metal-coating, the mozzle security performance improves, and the difficult phenomenon that fractures or damage occurs.
A kind of the solution in the totally-enclosed powder by gas-atomization device that nozzle and mozzle high-melting-point material block provided by the invention, leave the gap between mozzle and the metal-coating, the metal-coating internal layer is provided with white reflecting layer; Metal-coating does not contact with nozzle; Area of dissipation reduces, and mozzle does not directly contact the high speed cold air-flow, and these measures help the insulation of mozzle; The temperature that can keep melt significantly reduces the melt atomizing degree of superheat and reduces the danger of stopping up; Even cause under the not high situation of mozzle temperature in that the melt overheat degree is less, also can adopt the heater energy to keep the temperature of melt, so being used for of heater reduced the atomizing degree of superheat guarantee is provided.The reduction of melt overheat degree can effectively weaken the reaction between melt and the mozzle, alleviates composition and pollutes, and improves the quality of powder.
This shows that a kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction of the present invention has simple in structure, is prone to processing; Easy to use; Cost is low, can be repeatedly used, and anti-clogging, mediation are stopped up effective; Can save the work into mediation or replacing mozzle greatly, production efficiency improves.
Description of drawings
Fig. 1, solve the contour structures sketch map of the totally-enclosed powder by gas-atomization device that nozzle and mozzle high-melting-point material block, in the picture in picture: 1 for the insulation crucible, 2 for get thing mouth A, 3 for scalable plastic tube A, 4 for gloves I, 5 for the heater A external power interface I of atomizer, 6 for gloves II, 7 for the vavuum pump interface, 8 for the nozzle of atomizer, 9 air inlet pipe for the nozzle of atomizer, 10 for gloves III, 11 for the heater B external power interface I of atomizer, 12 for gloves IV, 13 for get thing mouth B, 14 for atomisation tower, 15 for the atomisation tower valve, 16 for gloves V, 17 for the heater A external power interface II of atomizer, 18 be gloves VI, 19 be gloves VII, 20 for the heater B external power interface II of atomizer, 21 be that gloves VIII, 22 is scalable plastic tube B;
The structural representation of getting thing mouth A2 on Fig. 2, the scalable plastic tube A, A21 is that internal layer vacuum valve, A22 are that inner space, A23 are that outer vacuum valve, A24 are that outer space, A25 are the vavuum pump interface among the figure, 3 is scalable plastic tube A;
Fig. 3, the part, inside that solves the totally-enclosed powder by gas-atomization device that nozzle and mozzle high-melting-point material block and nozzle dissect structural representation, among the figure 1 for insulation crucible, 3 be that scalable plastic tube A, 4 is metal ring for round metal cylindricality cylinder, 381 and 382 for heater B, 351 and 352 escape pipes, 361 and 362 metallic packing rings for two Laval structures of nozzle, 37 for ceramic annulus, 331 and 332 gaps for the escape pipe of two Laval structures of nozzle, 341 and 342 for reflecting layer, 32 for space between metal-coating and the mozzle, 31 for heater A, 30 for metal-coating, 29 for packing ring, 28 for bolt, 27 for mozzle, 26 for pipeline, 25 for insulation crucible valve, 24 for scalable plastic tube B, 23 for gloves VIII, 22 for heater B external power interface II, 21 for gloves VII, 20 for gloves VI, 19 for the external power interface II of heater A, 18 for gloves V, 17 for atomisation tower valve, 16 for atomisation tower, 15 for gloves IV, 14 for heater B external power interface I, 12 for gloves III, 11 for the nozzle of atomizer, 9 air inlet pipe for the nozzle of atomizer, 10 for gloves II, 8 for heater A external power interface I, 6 for gloves I, 5;
Fig. 4, a kind of structural representation enlarged drawing that solves escape pipe, heater, metallic packing ring and the metal ring of the atomizer right-of-center in political views side nozzle that nozzle and mozzle high-melting-point material stop up of the present invention; 331 is the gap of the escape pipe of nozzle; 341 is heater B; 351 is the escape pipe of the Laval structure of nozzle, and 361 is metallic packing ring, and 381 is metal ring.
The specific embodiment
Below through embodiment and combine accompanying drawing that the present invention is done further detailed description, but do not limit the present invention.
Embodiment 1
A kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction; Its profile sketch map is as shown in Figure 1, in the picture in picture: 1 for the insulation crucible, 2 for get thing mouth A, 3 for scalable plastic tube A, 4 for gloves I, 5 for the heater A external power interface I of atomizer, 6 for gloves II, 7 for the vavuum pump interface, 8 for the nozzle of atomizer, 9 air inlet pipe for the nozzle of atomizer, 10 for gloves III, 11 for the heater B external power interface I of atomizer, 12 for gloves IV, 13 for get thing mouth B, 14 for atomisation tower, 15 for the atomisation tower valve, 16 for gloves V, 17 for the heater A external power interface II of atomizer, 18 be gloves VI, 19 be gloves VII, 20 for the heater B external power interface II of atomizer, 21 be that gloves VIII, 22 is scalable plastic tube B.
The above-mentioned thing mouth A2 that gets is provided with two layers of vacuum valve, and structural representation is as shown in Figure 2, and A21 is the internal layer vacuum valve among the figure, and A22 is an inner space, and A23 is outer vacuum valve, and A24 is the outer space, and A25 is the vavuum pump interface;
When from the totally-enclosed system, getting article, be placed on article in the space between internal layer vacuum valve A21 and the outer vacuum valve A23 earlier, close internal layer vacuum valve A21 subsequently, open outer vacuum valve A23, take out article;
And when article are put in the totally-enclosed system; Open outer vacuum valve A23 earlier, article are put in the space between internal layer vacuum valve A21 and the outer vacuum valve A23, subsequently this space is vacuumized; After reaching vacuum; Stop to bleed, open internal layer vacuum valve A21, article are put in the totally-enclosed system;
The above-mentioned structure of getting thing mouth B13 is with the structure of getting thing mouth A2, and its process of getting thing and putting article into is as the operation of getting thing mouth A2.
A kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction; Its inner part and nozzle to dissect structural representation as shown in Figure 3, among the figure 1 for insulation crucible, 3 be that scalable plastic tube A, 4 is metal ring for round metal cylindricality cylinder, 381 and 382 for heater B, 351 and 352 escape pipes, 361 and 362 metallic packing rings for two Laval structures of nozzle, 37 for ceramic annulus, 331 and 332 gaps for the escape pipe of two Laval structures of nozzle, 341 and 342 for reflecting layer, 32 for space between metal-coating and the mozzle, 31 for heater A, 30 for metal-coating, 29 for packing ring, 28 for bolt, 27 for mozzle, 26 for pipeline, 25 for insulation crucible valve, 24 for scalable plastic tube B, 23 for gloves VIII, 22 for heater B external power interface II, 21 for gloves VII, 20 for gloves VI, 19 for the external power interface II of heater A, 18 for gloves V, 17 for atomisation tower valve, 16 for atomisation tower, 15 for gloves IV, 14 for heater B external power interface I, 12 for gloves III, 11 for the nozzle of atomizer, 91 and 92 air inlet pipe for the nozzle of atomizer, 10 for gloves II, 8 for heater A external power interface I, 6 for gloves I, 5.
Can find out that in conjunction with Fig. 1 and Fig. 3 the scalable plastic tube A3 that atomizer is installed is tightly connected with insulation crucible 1 one ends, the other end and nozzle 8 upper surfaces are tightly connected;
Atomisation tower 14 links to each other with scalable plastic tube B22 with 352 outsides with the escape pipe 351 of two Laval structures of the nozzle of the lower surface of nozzle 8; The vavuum pump interface that scalable plastic tube A3 bottom is provided with near the position of nozzle 8; External vavuum pump (not marking among the figure); The drain hole valve that atomisation tower 14 bottoms are provided with is an atomisation tower valve 15, promptly forms by insulation crucible 1, scalable plastic tube A3, nozzle 8, scalable plastic tube B22, atomisation tower 14, atomisation tower valve 15 and reaches the totally-enclosed system architecture of forming with the vavuum pump of scalable plastic tube A3 connection;
Described vavuum pump is a mechanical pump;
In the inside of scalable plastic tube A3, insulation crucible 1 one ends that are connected with scalable plastic tube A3 are connected with insulation crucible valve 23 through pipeline 24 on it; Insulation crucible valve 23 is connected with an end of pipeline 24, and an other end of pipeline 24 is the flat mouth structures of loudspeaker;
Metal-coating 28 mouthful makes its loudspeaker with pipeline 24 hold to be close to for flat mouthful through bolt 26 to be tightly connected with holding level with both hands on the mozzle 25 of atomizer;
In addition; Scalable plastic tube A3 goes up getting thing mouth A2 and is getting corresponding to bolt 26 and scalable plastic tube B22 and respectively be provided with two pairs of plastics thin type gloves on the position of the corresponding metallic packing ring 36 of thing mouth B13 and be respectively 4 among the figure, 6,10,12,16,18,19,21; They adopt adhesive to be connected on scalable plastic tube A3 or the scalable plastic tube B22 respectively, in order to bolt 26, mozzle 25, metal-coating 28, get thing mouth A2, get thing mouth B13, ceramic annulus 32, metallic packing ring 36, round metal cylindricality cylinder 37 etc. operate;
The nozzle 8 of atomizer is provided with the escape pipe 351 and 352 of two air inlet pipe 91 and 92 and two Laval structures;
Angle between the escape pipe 351 of two Laval structures and 352 the axis is between 20 ° ~ 75 °; The escape pipe 351 of two laval structures and peripheral 10mm ~ 100mm place of 352 are provided with gap 331 and 332; Heater B341 and B342 are installed in the gap 331 and 332, and the escape pipe 351 of two laval structures adopts metallic packing ring 361 to be connected with 362 thread seals with 352 gap 331 with 332 end; The escape pipe 351 of two Laval structures all is connected with 382 with metal ring 381 with the end at place, 352 gas outlet; Described metal ring 381 and 382 internal diameter are according to the escape pipe 351 and 352 of laval structure; Metal ring 381 and 382 outer radius adopt with the end of escape pipe 351 and 352 and are threaded; Specifically see Fig. 4, promptly the structural representation enlarged drawing with escape pipe 331, heater B341, metallic packing ring 361 and the metal ring 381 of atomizer right-of-center in political views side nozzle is that example describes, and wherein 331 is the escape pipe gap of nozzle; 341 is heater B; 351 is the escape pipe of two Laval structures of nozzle, and 361 is metallic packing ring, and 381 is metal ring;
The upper end core of metal-coating 28 has the hole that adapts with mozzle 25 external diameters, and in order to mozzle 25 to be installed, the lower end of metal-coating 28 is uncovered;
Make mozzle 25 concentric during installation with metal-coating 28; The upper end of the lower edge of the upper end of described mozzle 25 and metal-coating 28 is provided with the inside of the groove of corresponding recessed portion and places the packing ring 27 that plays the role of positioning at the edge near internal diameter, concordant with the bottom of metal-coating 28 with the bottom that guarantees mozzle 25;
Mozzle 25 does not directly contact with metal-coating 28, between the gap 30 of 10mm ~ 500mm is arranged, heater A29 are installed in the gap 30;
Described heater A29 is provided with external power interface 5 and 17 and pass scalable plastic tube A4 and be connected with extraneous power supply;
Described heater B341 and 342 is provided with external power interface 11 and 20 and pass scalable plastic tube B22 and be connected with extraneous power supply;
Described extraneous power supply is 220V or 380V power supply;
In addition, be provided with metallic reflective coating or spray the formed reflecting layer 31 of one deck white reflecting coating on the surface of metal-coating 28 near heater A29, described white reflecting coating 31 used coating are tin oxide;
Adopt ceramic annulus 32 sealings in the metal-coating 28 and 30 bottoms, gap of mozzle 25 bottoms;
Pottery annulus 32 adopts aluminium oxide ceramics, silicon nitride ceramics, boron nitride ceramics, zirconia ceramics or thyrite; Pottery annulus 32 and mozzle 25 uniform internal diameters; The external diameter of pottery annulus 32 is less than metal-coating 28 bottom internal diameters; On the edge in pottery annulus 32 inner footpaths a boss is arranged, this boss structure matches with the recessed portion of mozzle 25 bottoms;
Atomisation tower 14 is tightly connected through scalable plastic tube B22 with nozzle 8 lower surfaces; In inside and outside two metallic channels that two and half fore-telling round metal cylindricality cylinders 37 are placed in respectively on nozzle 8 lower surfaces and the atomisation tower 14, be placed in respectively up and down in the metallic channel on nozzle 8 lower surfaces and the atomisation tower 14;
Described mozzle 25 selective oxidation aluminium pottery;
Described metal-coating 28 is selected stainless steel with metallic packing ring 361 and 362;
Described heater A29 and heater B341 and 342 select for use the mode that electric furnace heating wire twines to play a role;
Described scalable plastic tube A3 and scalable plastic tube B22 adopt the flexible vent hose of high-temperature nylon.
Described gloves are plastics thin type gloves.
Adopt a kind of totally-enclosed powder by gas-atomization device that nozzle and mozzle high-melting-point material block preparation metallic aluminium powder that atomizes that solves provided by the invention, the aluminium oxide phenomenon of blocking does not appear in the nozzle and the mozzle mouth of pipe, and can produce continuously the whole year.Compare with existing powder by atomization device; The totally-enclosed powder by atomization device that prevents that nozzle and mozzle high-melting-point material from blocking provided by the invention; Can solve nozzle and mozzle mouth of pipe oxide, nitride and other high-melting-point material blockage problem of atomizer and eliminate the low melting point tamper that metal or alloy forms; Realize producing continuously, reduced cost, improved product quality and production efficiency.
Foregoing is merely the basic explanation of the present invention under conceiving, and according to any equivalent transformation that technical scheme of the present invention is done, all should belong to protection scope of the present invention.
Claims (14)
1. a totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction comprises insulation crucible, atomisation tower, atomizer, scalable plastic tube A, scalable plastic tube B and vavuum pump;
Wherein said atomizer comprises mozzle, nozzle, metal-coating, heater A, ceramic annulus;
The upper end core of described metal-coating has the hole that adapts with the mozzle external diameter, and in order to mozzle to be installed, the lower end of metal-coating is uncovered, makes mozzle and metal-coating concentric during installation;
The lower edge of the upper end of described mozzle and the upper end of metal-coating are provided with the groove of corresponding recessed portion near corresponding position, the edge of internal diameter;
Heater A is installed in the gap that 10mm ~ 100mm is arranged between mozzle and the metal-coating in the gap;
Described ceramic annulus and mozzle uniform internal diameter, the external diameter of ceramic annulus have a boss less than metal-coating bottom internal diameter on the edge in the inner footpath of ceramic annulus, and this boss structure matches with the recessed portion of mozzle bottom;
The pottery annulus is installed to the bottom of mozzle and is embedded in the metal-coating; The boss of pottery annulus is embedded on the recessed portion of mozzle bottom; The pottery annulus adopts with metal-coating and is threaded; After installing, guarantee to protrude from the lower surface of metal-coating with the corresponding another side of boss one side is arranged on the ceramic annulus;
The material that the inner surface spraying is gone up and metal, alloy liquation, metal oxide or metallic compound are difficult to adhere to of pottery annulus;
Be equipped with external power interface on described heater A and the heater B and be connected with extraneous power supply; Described extraneous power supply is 220V or 380V power supply;
It is characterized in that described atomizer also comprises a packing ring; Lower edge and metal-coating upper end that described packing ring is placed in the mozzle upper end are provided with in the groove of corresponding recessed portion near corresponding position, the edge of internal diameter, and be concordant with the bottom of metal-coating with the bottom that guarantees mozzle;
Described nozzle is provided with two air inlet pipe and two escape pipes;
Two escape pipes of described nozzle adopt the Laval structure, and the angle between the axis of the escape pipe of two Laval structures is between 20 ° ~ 75 °;
Peripheral 10mm ~ 100mm the place of the escape pipe of each Laval structure all is provided with the gap; Heater B all is installed in the gap; The metallic packing ring seal with screwed joint is all adopted in the end in the gap of the escape pipe of each Laval structure; The end at the place, gas outlet of the escape pipe of each Laval structure all is connected with metal ring, and described metal ring internal diameter is according to the escape pipe of laval structure, and the outer radius of metal ring adopts with the end of escape pipe and is threaded;
Be equipped with external power interface on described heater A and the heater B and be connected with extraneous power supply; Described extraneous power supply is 220V or 380V power supply.
2. a kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction as claimed in claim 1; It is characterized in that described scalable plastic tube A is tightly connected with the upper surface of the nozzle of insulation crucible and atomizer respectively; Atomisation tower links to each other through scalable plastic tube B with the outside, gas outlet of the lower surface nozzle of nozzle; Scalable plastic tube A bottom is provided with the vavuum pump interface near the position of nozzle; External vavuum pump; The drain hole valve that the atomisation tower bottom is provided with is the atomisation tower valve, and two and half foretell round metal cylindricality cylinder is placed in respectively in inside and outside two metallic channels on nozzle lower surface and the atomisation tower, forms the totally-enclosed system architecture of being made up of the vavuum pump that is incubated crucible, scalable plastic tube A, nozzle, scalable plastic tube B, atomisation tower, atomisation tower valve and be connected with scalable plastic tube A;
Inner at scalable plastic tube A, insulation crucible one end that is connected with scalable plastic tube A is connected with insulation crucible valve through pipeline on it;
Insulation crucible valve is that the pipeline of flat mouthful of loudspeaker is close to through bolt with the metal-coating upper limb of atomizer and is connected through an end again, and they all place the inside of scalability plastic tube A;
Get thing mouth A at scalable plastic tube A being provided with, on the scalable plastic tube B between spray tower and the nozzle lower surface, be provided with and get thing mouth B near the position of ceramic annulus, metal ring and the metallic packing ring of atomizer near the mozzle place;
On the described scalable plastic tube A get on thing mouth A and the scalable plastic tube B to get thing mouth B structure identical; Be respectively equipped with two layers of vacuum valve; Be internal layer vacuum valve and outer vacuum valve; Outer vacuum valve on it adopts the vacuum rubber pipe to be connected with extraneous multiple-pass joint, and the latter is connected near the continuous vavuum pump in the position of nozzle with above-mentioned scalable plastic tube A bottom again;
In addition, the thing mouth A both sides of getting on the scalable plastic tube A promptly respectively are provided with pair of glove corresponding to the upper limb place of bolt and metal-coating; Getting on the corresponding position, thing mouth B both sides of scalable plastic tube B, also be provided with two both hands covers, each gloves adopts adhesive to be connected with scalable plastic tube A and scalable plastic tube B respectively.
3. a kind of totally-enclosed powder by gas-atomization device that nozzle and mozzle high-melting-point material block that solves as claimed in claim 2, the metal-coating that it is characterized in that described atomizer is provided with metallic reflective coating or the formed reflecting layer of spraying one deck white reflecting coating near the surface of heater A.
4. a kind of totally-enclosed powder by gas-atomization device that nozzle and mozzle high-melting-point material block that solves as claimed in claim 3, the metal-coating that it is characterized in that described atomizer is a tin oxide near the used coating of white reflecting coating of the surface spraying of heater.
5. a kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction as claimed in claim 4 is characterized in that described scalable plastic tube A and scalable plastic tube B are inner coating glass fibre, the middle enhancing of stainless steel elastic helix steel wire, the outside scalable exotic material for Polypropylence Sheet formation of adopting.
6. a kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction as claimed in claim 5 is characterized in that described scalable plastic tube A and scalable plastic tube B are the flexible vent hose of high-temperature nylon.
7. a kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction as claimed in claim 6 is characterized in that described vavuum pump is mechanical pump, diffusion pump or molecular pump.
8. a kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction as claimed in claim 7 is characterized in that described mozzle is aluminium oxide ceramics, silicon nitride ceramics, boron nitride ceramics, zirconia ceramics or silicon carbide ceramics.
9. a kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction as claimed in claim 8 is characterized in that described metal-coating, metal ring and metallic packing ring are carbon steel or stainless steel.
10. a kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction as claimed in claim 9 is characterized in that described round metal cylindricality cylinder is a stainless steel.
11. a kind of totally-enclosed powder by gas-atomization device that nozzle and mozzle metal and alloy stop up that solves as claimed in claim 10 is characterized in that described packing ring adopts plastics or metal washer.
12. a kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction as claimed in claim 11 is characterized in that described heater A and heater B are electric furnace heating wire or silicon carbon rod.
13. a kind of totally-enclosed powder by gas-atomization device that nozzle and mozzle high-melting-point material block that solves as claimed in claim 12 is characterized in that described ceramic annulus selects aluminium oxide ceramics, silicon nitride ceramics, boron nitride ceramics, zirconia ceramics or silicon carbide ceramics for use.
14. utilize a kind of totally-enclosed powder by gas-atomization device that solves nozzle and mozzle high-melting-point material obstruction as claimed in claim 13 to carry out the preparation of metal and alloy powder.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210049050.XA CN102554246B (en) | 2012-02-29 | 2012-02-29 | Totally-enclosed gas-atomizing powder preparation device for solving blockage of nozzle and liquid guiding pipe caused by high-melting-point material |
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| CN201210049050.XA CN102554246B (en) | 2012-02-29 | 2012-02-29 | Totally-enclosed gas-atomizing powder preparation device for solving blockage of nozzle and liquid guiding pipe caused by high-melting-point material |
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| CN102554246A true CN102554246A (en) | 2012-07-11 |
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| CN201210049050.XA Expired - Fee Related CN102554246B (en) | 2012-02-29 | 2012-02-29 | Totally-enclosed gas-atomizing powder preparation device for solving blockage of nozzle and liquid guiding pipe caused by high-melting-point material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107899868A (en) * | 2017-12-10 | 2018-04-13 | 柳州市菱丰科技有限公司 | A kind of nozzle for preventing kiss-coating |
| CN109249032A (en) * | 2018-11-23 | 2019-01-22 | 上海电气集团股份有限公司 | Powder by atomization catheter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6594802B2 (en) * | 2016-03-08 | 2019-10-23 | 東芝機械株式会社 | Hot water pipe, hot water pipe assembly and non-ferrous metal casting system for molten non-ferrous metal alloy |
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| DE10044364C1 (en) * | 2000-09-08 | 2002-01-17 | Ald Vacuum Techn Ag | Molten metal atomizer for powder metallurgy, surrounds crucibles by insulation and external induction coil, and includes hot channel for atomization air |
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| CN202498212U (en) * | 2012-02-29 | 2012-10-24 | 上海应用技术学院 | Totally-enclosed gas-atomizing powder preparation device for solving blockage of nozzle and liquid guiding pipe caused by high-melting-point material |
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| DE10044364C1 (en) * | 2000-09-08 | 2002-01-17 | Ald Vacuum Techn Ag | Molten metal atomizer for powder metallurgy, surrounds crucibles by insulation and external induction coil, and includes hot channel for atomization air |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107899868A (en) * | 2017-12-10 | 2018-04-13 | 柳州市菱丰科技有限公司 | A kind of nozzle for preventing kiss-coating |
| CN109249032A (en) * | 2018-11-23 | 2019-01-22 | 上海电气集团股份有限公司 | Powder by atomization catheter |
| CN109249032B (en) * | 2018-11-23 | 2022-01-21 | 上海电气集团股份有限公司 | Atomized powder-making catheter |
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| CN102554246B (en) | 2015-02-11 |
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