CN102528058B - Totally-enclosed gas atomizing powder making device for preventing high-melting-point substance from being blocked - Google Patents
Totally-enclosed gas atomizing powder making device for preventing high-melting-point substance from being blocked Download PDFInfo
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Abstract
The invention discloses a totally-enclosed gas atomizing powder making device for preventing a high-melting-point substance from being blocked. The device comprises a heat-preserving crucible, an atomizer, an atomizing tower, a telescopic plastic pipe A, a telescopic plastic pipe B and the like, wherein the atomizer is arranged in the telescopic plastic pipe A; the telescopic plastic pipe A is hermetically connected with the heat-preserving crucible and the upper surface of a nozzle of the atomizer respectively; and the atomizing tower is hermetically connected with the lower surface of the nozzle through the telescopic plastic pipe B, so that a totally-enclosed system structure is formed, and the formation of a high-melting-point substance on the atomizer and caused blockage of the atomizer can be prevented. A heating body is arranged in a gap between a honeycomb duct of the atomizer and a metal jacket, so that nozzle blockage caused by a metal or an alloy can be solved by electrifying. When the atomizer is blocked, the problem of blockage can be solved by replacing a ceramic circular ring. The totally-enclosed gas atomizing powder making device for preventing the high-melting-point substance from being blocked disclosed has the advantages of simple structure, convenience for installing, effective prevention and solving of blockage, improvement on the powder quality, and the like.
Description
Technical field
The present invention relates to and manufacture ultra-fine powder technology field with atomizing molten materials with gases, is more particularly a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking preparing metal or alloy ultra-micro powder.
Background technology
High-performance metal and alloy powder have important engineering background and large market development potential mostly, more and more wide in the application in the fields such as Aero-Space, electronic information, electricity power, metallurgical machinery in recent years.Along with the development of modern science and technology, more and more higher to the requirement of the kind of dusty material, the aspect such as quality and cost, the preparation of metal dust is towards high-purity, fine, composition and granularity is controlled and the future development of low cost.Atomized powder has the advantages such as the production that sphericity is high, powder size is controlled, oxygen content is low, production cost is low and adapt to various metals and alloy powder, has become the main development direction of high-performance and special alloy powder preparation technology.
Gas atomization techniques is the main method of producing metal and alloy powder, and the general principle of gas atomization with a high velocity air liquid metal stream is ground into droplet and is frozen into the process of powder.What vacuum atomizing powder process adopted is the metal or metal alloy that melting under vacuum obtains; when they reach certain degree of superheat; proceed in insulation crucible (tundish) after being incubated reasonable time again; under the condition of gas shield; these metal liquids flow out through mozzle, by high-pressure inert gas stream, metal liquid atomization is broken into drop tiny in a large number by nozzle, and these tiny drops are frozen into spherical or sub-spheric granules awing.Because drop is tiny and heat exchange conditions is good, the condensation rate of drop generally can reach 100 ~ 10000K/s, and the several order of magnitude higher than the cooling of ingot casting, therefore metal powder particles is tiny, the uniform composition of alloy, fine microstructures.Vacuum atomizing powder process not only can prepare great majority can not adopt the metal and alloy powder thereof that manufacture with water atomization process in atmosphere, and can produce the spherical or sub-spherical powder of many specific alloys.Nearly all metal be melted all can be produced with atomization, especially suitable for producing alloy powder.Vacuum atomizing powder process method production efficiency is high, is easy to expand commercial scale, should and be subject to the extensive utilization of industrial quarters.
In prior art, atomizer in use often runs into the phenomenon appearance of mozzle blocking, and this reason primarily of following three aspects causes, and one is that molten metal occurs solidifying because temperature reduces in flow process; Two is that molten drop occurs backwash in atomization process, namely the drop be atomized flies to the direction 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 centre bore of aerodynamic atomization mozzle wherein block and atomization process is interrupted; Three is that oxygen, nitrogen, pipeline and mozzle material etc. in metal bath and atomizer ambient gas react high-melting-point substances such as generating metal oxide, nitride, carbide, along with increasing of these material amounts, mozzle can be blocked.When there is this situation, the general way of enterprise stops producing, and atomizer is pulled down dredging, but this way usually can not be dealt with problems, this is mainly general higher due to these high-melting-point substances fusing points, in this case, only has and changes mozzle and even whole atomizer.But also there is two problems in the method changed, one is the intrusion running into oxygen in air, nitrogen and other gas in Renewal process unavoidably, and they can be oxidized, metal nitride, have impact on product quality, and two are reduction of efficiency, add production cost.
At present, carrying out improving the technology upgraded to atomizer has a lot, but seldom has the patent and the technology that block especially oxide, nitride or other high-melting-point substances blockage problem about the mozzle how solving atomizer.Therefore, find a kind of effective solution, the mozzle that can solve atomizer blocks especially oxide, nitride or other high-melting-point substances blockage problem, can also ensure simple and practical, for the skilled person or a difficult problem.
Summary of the invention
An object of the present invention solves above-mentioned technical problem and provide a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking, and the mozzle metal that it can solve atomizer effectively blocks the problem that especially oxide, nitride or other high-melting-point substances block.
Two of object of the present invention is to provide the above-mentioned application process of a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking in metal and alloy pulverizing process.
Technical scheme of the present invention
The totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking, comprises insulation crucible, atomizer, scalable plastic tube A, atomisation tower, scalable plastic tube B etc.;
Wherein said atomizer comprises mozzle, nozzle, also comprises metal-coating, heater, ceramic annulus and ceramic-seal ring etc. in addition;
Described nozzle is provided with air inlet pipe and gas outlet;
The upper end center sections of described metal-coating divides the hole having and adapt with mozzle external diameter, in order to install mozzle, the lower end of metal-coating is uncovered, and metal-coating becomes the outer cone body of 80 ° ~ 89 ° from top to bottom at the tapered at one end at 1/3 ~ 1/2 place near bottom outlet;
Be provided with screw thread in the outside being apered to the part of bullet of metal-coating and match with the screw thread on the side of center taper hole in nozzle, to realize support to metal-coating, location and fixing, metal-coating remainder does not contact with nozzle;
Make mozzle concentric with metal-coating during installation, the bottom of mozzle is concordant with the bottom of metal-coating;
There is the gap of 10mm ~ 100mm between mozzle and metal-coating, in gap, heater is installed; To make mozzle directly not contact with metal-coating, the conduction between heater and metal-coating can be prevented on the one hand, greatly can reduce scattering and disappearing of mozzle heat on the other hand;
Described heater is provided with external power interface and is connected with extraneous power supply, in case when there is metal or low melting point blocking during atomizer uses, by heater energising, its fusing that heats up is made to tamper heating, reaches the object solving metal or alloy blocking; Described extraneous power supply is 220V or 380V power supply;
In addition, to be preferably provided with at metal-coating the reflecting layer that metallic reflective coating or spraying one deck white reflective coating formed near the surface of heater, to be used to the energy reflecting heater radiation, thus reach and reduce the energy-conservation effect of energy loss; The coating that described white reflective coating is used is preferably tin oxide;
Described ceramic annulus and mozzle uniform internal diameter, the external diameter of pottery annulus is less than metal-coating bottom external diameter and is greater than metal-coating bottom internal diameter, there is a boss at the edge in the pottery inner footpath of annulus, and this boss structure matches with the recessed portion of mozzle bottom; Between the extension and the extension of ceramic annulus of boss, have screw, the position of this screw corresponds to gap between heat pipe and metal-coating and near the inwall of metal-coating; Also have corresponding screw at the position that the top of metal-coating and this position are corresponding simultaneously; The quantity of screw is 4 ~ 8;
The screw of another side corresponding to there being boss one side on pottery annulus is provided with corresponding recessed hole, and the size in this hole is to ensure that the embedding of ceramic-seal ring is installed;
Pottery annulus is installed to the bottom of mozzle and is embedded in metal-coating; the boss of pottery annulus is embedded on the recessed portion of mozzle bottom; after installing, ensure that another side corresponding with there being boss one side on ceramic annulus flushes with the lower surface of metal-coating;
The upper material with often occurring to block of inner surface spraying of pottery annulus, as metal, alloy molten solution, metal oxide or metallic compound are difficult to the material of adhesion, what be used for preventing oxide or other compound at circular body surface solidifies accumulation, thus reaches the object preventing from blocking, solve blocking; The selection of inner surface spraying substance, will, according to different atomization metal, adopt the methods such as angle of wetting to determine;
Nut is first used in described metal screw bottom, then successively through after screw corresponding on screw corresponding on ceramic annulus and metal-coating, the metal screw being positioned at metal-coating upper position place is tightened with locking nut;
In ceramic annulus screw, the position of adjacent nut is put into ceramic-seal ring and is adopted with ceramic annulus and is threaded subsequently.
Described ceramic-seal ring material selection zirconyl phosphate ceramics, aluminum phosphate or microcrystal glass processable ceramic;
Described mozzle, metal-coating according to atomization metal or alloy powder difference, can select different materials;
Even if described mozzle can select 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, as aluminium oxide ceramics, silicon nitride ceramics, boron nitride ceramics, zirconia ceramics, silicon carbide ceramics and other refractory ceramics;
Described metal-coating can selection intensity high, be easy to process, inexpensive material, as carbon steel or stainless steel.
Described heater is different according to atomization metal or alloy powder, optional electric furnace heating wire, silicon carbon rod heater, and they are played a role by the mode installed or be wound around;
Above-mentioned scalable plastic tube A one end is tightly connected with insulation crucible one end, the nozzle upper surface of the other end and atomizer is tightly connected, atomisation tower is connected by scalable plastic tube B with outside the nozzle gas outlet of the lower surface of nozzle, scalable plastic tube A bottom is provided with vacuum pump interface near the position of nozzle, external vavuum pump, the drain hole valve that atomisation tower bottom is provided with and atomisation tower valve, namely formed by insulation crucible, scalable plastic tube A, nozzle, scalable plastic tube B, atomisation tower, the totally-enclosed system architecture formed together with atomisation tower valve and the vavuum pump that connects with scalable plastic tube A,
Described vavuum pump is conventional vacuum system, comprises all kinds of mechanical pump, diffusion pump, molecular pump etc.;
Inner at scalable plastic tube A, the insulation crucible one end be connected with scalable plastic tube A, it is connected with insulation crucible valve, to use when above-mentioned totally-enclosed system architecture inside vacuumizes by pipeline;
Insulation crucible valve is bell-mouthed pipeline again through one end with the upper port of the mozzle of atomizer by metal ferrule and establishes bolt thereon and pad to be close to be connected, and they are all placed in the inside of scalability plastic tube A;
In addition, scalable plastic tube A correspond to metal ferrule, metal-coating upper limb place position on be respectively provided with pair of glove, to facilitate, the mozzle of atomizer and metal-coating are operated;
Scalable plastic tube B, on the position of ceramic annulus corresponding to atomizer, is also provided with pair of glove, is used for foretelling round metal cylindrical barrel, ceramic annulus and ceramic-seal ring to two and half and operates;
Three described both hands covers are plastics thin type gloves, adopt adhesive to be connected with scalable plastic tube A or scalable plastic tube B respectively;
In addition, the position that scalable plastic tube A corresponds to mozzle and the position of ceramic annulus corresponding to atomizer on scalable plastic tube B arrange structure identical get thing mouth, to facilitate exchanging for of article inside and outside closed system;
Thing mouth and scalable plastic tube B get thing mouth to getting on described scalable plastic tube A, be respectively equipped with two layers of vacuum valve, i.e. internal layer vacuum valve and outer vacuum valve, outer vacuum valve on it adopts vacuum rubber pipe to be connected with extraneous multiple-pass joint, and the vavuum pump that the latter is connected near the position of nozzle with above-mentioned scalable plastic tube A bottom is again connected.
When getting article from full-closed system, first article being placed on the space between two valves, closing internal layer valve subsequently, opening outer valve, pulling items; And when article are put in totally-enclosed system, first open outer valve, article are put into the space between internal layer valve and outer valve, subsequently to this evacuate space, after reaching vacuum, stop bleeding, open internal layer valve, article are put in totally-enclosed system;
And when mozzle exchanged by needs (as mozzle year ftractures for a long time), first decline nozzle, metal-coating and heater, and write down the distance of outside scale decline, in closed system, unload metal ferrule, take off mozzle, and exchange by getting thing mouth; When installing mozzle, first in closed system, load onto mozzle, the air cavity that rises subsequently, metal-coating and heater, to rise the height write down according to outside scale, guarantee is in place at every turn.
And (block as there is high-melting-point substances) when ceramic annulus exchanged by needs, first by the gloves on Polypropylence Sheet, utilize the slip on inside and outside two metallic channels of two and half fore-telling round metal cylindrical barrel on atomizer nozzle and atomisation tower, open the internal structure of round metal cylindrical barrel, utilize gloves subsequently, screw off ceramic-seal ring, unload the ceramic annulus on atomizer, and exchanged by the thing mouth of getting on scalable plastic tube B; When ceramic annulus is installed, first ceramic annulus is put into scalable plastic tube B by the thing mouth of getting on scalable plastic tube B, then install the ceramic annulus on atomizer, be loaded on ceramic-seal ring.
Described scalable plastic tube A and scalable plastic tube B, its material adopts high-temperature resistance plastice, glass fibre as coated in its inside, middle employing stainless steel elastic helix steel wire reinforcement, the outside scalable exotic material being Polypropylence Sheet and being formed, as high-temperature nylon extension flexible ventilation ducting.Adopt scalable plastic tube A, conveniently under closed environment, atomizer is processed.
The installation process of above-mentioned a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking is as follows:
First being threaded connection by the metal-coating on atomizer is installed on nozzle, and the outer cone body of metal-coating is matched with the interior center taper hole of nozzle, and metal-coating remainder does not contact with nozzle;
Then inside metal-coating, heater is installed;
Mozzle is put into subsequently inside heater, the center of mozzle and the center superposition of metal-coating, afterwards at exit, mozzle bottom placing ceramic annulus, again by metal screw bottom nut, then successively through after screw corresponding on screw corresponding on ceramic annulus and metal-coating, the metal screw being positioned at metal-coating upper position place is tightened with locking nut, and in the screw of ceramic annulus, the position of adjacent nut is put into ceramic-seal ring and is adopted with ceramic annulus and is threaded subsequently;
Then above-mentioned atomizer is put into scalable plastic tube A, afterwards scalable plastic tube A is arranged between insulation crucible and nozzle;
On scalable plastic tube A, gloves etc. are installed subsequently;
Then outside nozzle lower surface nozzle gas outlet and inside and outside two metallic channels and two and half are installed between spray tower foretell round metal cylindrical barrel;
Finally between nozzle lower surface and spray tower, scalable plastic tube B etc. is installed, thus completes a kind of totally-enclosed gas atomization pulverization device installation preventing high-melting-point substances from blocking.
The above-mentioned application process of a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking in metal and alloy pulverizing process, specific as follows:
Due to the improvement of a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking of the present invention, in equipment use process, first insulation crucible valve and atomisation tower valve is closed, then with vavuum pump, process is vacuumized to scalable plastic tube A and scalable plastic tube B, after being extracted into suitable vacuum, put into inert gas, when in scalable plastic tube A and scalable plastic tube B, pressure is superatmospheric time, open atomisation tower valve, open insulation crucible valve subsequently and put into metal bath, carry out powder atomization process.If period when there is the mozzle blocking of atomizer, or changes mozzle or opening power, utilize heater to heat-treat blocking metal, impel it to melt, solve the blockage problem of mozzle and nozzle.Just in case when heat-treating methods does not prove effective, then by scalable plastic tube B gets two layers of vacuum valve that thing mouth is provided with above, exchange ceramic annulus.
Technique effect of the present invention
In a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking of the present invention; because atomizer adopts closed system; the intrusion of oxygen, nitrogen or other gas in atomizer unloading process can be avoided, the loss of the product quality that the shutdown caused the blocking of nozzle and even mozzle after preventing the generation of the high-melting-point substances such as oxide, nitride brings and economic aspect.
A kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking of the present invention, by changing the structure of atomizer, in gap between mozzle and metal-coating, heater is installed, by heating, effectively can eliminate the low melting point tamper that metal or alloy is formed, insulation effect can also be played to molten metal, the cooled and solidified produced in the flow process that can effectively prevent molten metal from causing because of reasons such as Changes in weather, thus the phenomenon avoiding the mozzle mouth of pipe to block atomization cannot be continued occurs.
At present, carrying out improving the technology upgraded to atomizer has a lot, and thus existing gas atomization pulverization device structure is numerous, different.Compared with existing atomizer, atomizer provided by the invention belongs to a kind of whole closing appliance preventing and solve high-melting-point substances and block, not only can get rid of the generation of mozzle mouth of pipe oxide, nitride and other high-melting-point substances, and eliminate the low melting point tamper of metal or alloy formation by heating.
In a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking provided by the invention, major part parts adopt metal material manufacture, not only cheap, easy to process, reusable, and mozzle is concordant with metal-coating end, can prevent mozzle end and high speed cold air flow contacts, mozzle heating status is significantly improved, thermal shock resistance improves, and not easily bursts.Due to the protection of metal-coating, mozzle security performance improves, the phenomenon appearance not easily fractureing or damage.
In a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking provided by the invention, gap is left between mozzle and metal-coating, metal-coating internal layer is provided with reflecting layer, metal-coating only contacts with nozzle with a cone section, area of dissipation reduces, and mozzle does not directly contact high speed cold air-flow, and these measures are conducive to the insulation of mozzle, significantly can keep the temperature of melt, reduce the melt atomization degree of superheat and reduce the danger blocked; Even if when melt overheat degree is less cause mozzle temperature not high, heater energy also can be adopted to keep the temperature of melt, therefore heater use for reduce atomization the degree of superheat provide guarantee.The reduction of melt overheat degree, effectively can weaken the reaction between melt and mozzle, alleviates composition and pollutes, improve the quality of powder.
As can be seen here, it is simple that a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking of the present invention has structure, easy processing, easy to use, cost is low, can repeatedly use, and anti-clogging, dredge blockage are effective, can greatly save as dredging or the work changing mozzle, production efficiency improves.
Accompanying drawing explanation
Fig. 1, the contour structures schematic diagram of the totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking, in picture in picture: 1 is insulation crucible, 2 for getting thing mouth A, 3 is scalable plastic tube A, 4 is gloves I, 5 is the heater external power interface I of atomizer, 6 is gloves II, 7 is the nozzle of atomizer, 8 is the air inlet pipe of nozzle, 9 is scalable plastic tube B, 10 is gloves III, 11 for getting thing mouth B, 12 is atomisation tower, 13 is atomisation tower valve, 14 is gloves III, 15 is the heater external power interface II of atomizer, 16 is vacuum pump interface, 17 is gloves V, 18 is gloves VI.
The structural representation getting thing mouth on Fig. 2, scalable plastic tube A 21 be internal layer vacuum valve, 22 is inner space in figure, 23 be outer vacuum valve, 24 be outer space, 25 for vacuum pump interface, 3 is scalable plastic tube A;
Fig. 3, the local, inside of the totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking and the cutting structural representation of nozzle, in figure, 1 is insulation crucible, 3 is scalable plastic tube A, 4 is gloves I, 5 is heater external power interface I, 6 is gloves II, 7 is nozzle, 8 is the air inlet pipe of nozzle, 9 is scalable plastic tube B, 10 is gloves III, 12 is atomisation tower, 13 is atomisation tower valve, 14 is gloves IV, 15 is heater external power interface II, 17 is gloves V, 18 is gloves VI, 19 is pipeline, 20 is metal ferrule, 21 is pad, 22 is bolt, 23 is the gas outlet of nozzle, 24 is the space between metal-coating and mozzle, 25 is heater, 26 is mozzle, 27 is insulation crucible valve, 28 is metal-coating, 29 is ceramic-seal ring, 30 is half fore-telling round metal cylindrical barrel, 31 is ceramic annulus, 32 is metal screw, 33 is locking nut.
Detailed description of the invention
Below by embodiment, also the present invention is described in further detail by reference to the accompanying drawings, but do not limit the present invention.
embodiment 1
A kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking, its appearance schematic diagram as shown in Figure 1, in picture in picture: 1 is insulation crucible, 2 for getting thing mouth I, 3 is scalable plastic tube A, 4 is gloves I, 5 is the heater external power interface I of atomizer, 6 is gloves II, 7 is the nozzle of atomizer, 8 is the air inlet pipe of nozzle, 9 is scalable plastic tube B, 10 is gloves III, 11 for getting thing mouth II, 12 is atomisation tower, 13 is atomisation tower valve, 14 is gloves III, 15 is the heater external power interface II of atomizer, 16 is vacuum pump interface, 17 is gloves V, 18 is gloves VI.
The above-mentioned thing mouth A2 that gets is provided with two layers of vacuum valve, and as shown in Figure 2, in figure, 21 is internal layer vacuum valve to structural representation, and 22 is inner space, and 23 is outer vacuum valve, and 24 is outer space, and 25 is vacuum pump interface;
When getting article from full-closed system, first article are placed on the space between valve 21 and 23, valve-off 21 subsequently, opens valve 23, pulling items;
And when article are put in totally-enclosed system, first open valve 23, article are put into the space between valve 21 and 23, subsequently to this evacuate space, after reaching vacuum, stop bleeding, open valve 21, article are put in totally-enclosed system;
The above-mentioned structure of getting thing mouth B11 is with getting the structure of thing mouth A2, and its process of getting thing and putting article into is as got the operation of thing mouth A2.
A kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking, the cutting structural representation of its inner local and nozzle as shown in Figure 3, in figure, 1 is insulation crucible, 3 is scalable plastic tube A, 4 is gloves I, 5 is heater external power interface I, 6 is gloves II, 7 is nozzle, 8 is the air inlet pipe of nozzle, 9 is scalable plastic tube B, 10 is gloves III, 12 is atomisation tower, 13 is atomisation tower valve, 14 is gloves IV, 15 is heater external power interface II, 17 is gloves V, 18 is gloves VI, 19 is pipeline, 20 is metal ferrule, 21 is pad, 22 is bolt, 23 is the gas outlet of nozzle, 24 is the space between metal-coating and mozzle, 25 is heater, 26 is mozzle, 27 is insulation crucible valve, 28 is metal-coating, 29 is ceramic-seal ring, 30 is half fore-telling round metal cylindrical barrel, 31 is ceramic annulus, 32 is metal screw, 33 is locking nut.
Composition graphs 1 and Fig. 3 can find out, the scalable plastic tube A3 being provided with atomizer is tightly connected with insulation crucible 1 one end, and the other end and nozzle 7 upper surface are tightly connected;
Atomisation tower 12 is connected by scalable plastic tube B9 with outside the nozzle gas outlet 23 of the lower surface of nozzle 7; the vacuum pump interface 16 that scalable plastic tube A3 bottom is provided with near the position of nozzle 7; external vavuum pump; the drain hole valve that atomisation tower 12 bottom is provided with and atomisation tower valve 13, namely formed by the totally-enclosed system architecture formed together with insulation crucible 1, scalable plastic tube A3, nozzle 7, scalable plastic tube B9, atomisation tower 12, atomisation tower valve 13 and the vavuum pump that connects with scalable plastic tube A;
Described vavuum pump is mechanical pump;
In the inside of scalable plastic tube A3, insulation crucible 1 one end be connected with scalable plastic tube A3, it is connected with insulation crucible valve 27 by pipeline; Insulation crucible valve 27 is connected with one end of pipeline 19, and other one end of pipeline 19 is inner flat horn mouth,
Metal ferrule 20 by the upper end flat mouth of the mozzle 26 of atomizer by being located at bolt 22 on metal ferrule 20 and pad 21 makes it be connected with the flat end seal of the horn mouth inside of pipeline 19;
In addition, it can also be seen that from Fig. 1 and Fig. 3, scalable plastic tube A3 correspond to metal ferrule 20, metal-coating 28 upper limb place position on and scalable plastic tube B9 be respectively provided with a pair of plastics thin type gloves and be respectively 4 in figure, 6,10,14,17,18 on the position of ceramic annulus 31 corresponding to atomizer, they adopt adhesive to be connected on scalable plastic tube A3 and scalable plastic tube B9 respectively, and in order to the metal-coating 28 to atomizer, mozzle 26, ceramic-seal ring 29, half foretells round metal cylindrical barrel 30 and ceramic annulus 31 operates;
The nozzle 7 of atomizer is provided with the gas outlet 23 of nozzle air inlet pipe 8 and nozzle;
The upper end center sections of metal-coating 28 divides the hole having and adapt with mozzle 26 external diameter, in order to install mozzle 26, the lower end of metal-coating 28 is uncovered, and metal-coating 28 becomes the outer cone body of 80 ° ~ 89 ° from top to bottom at the tapered at one end at 1/3 ~ 1/2 place near bottom outlet;
Be provided with screw thread in the outside being apered to the part of bullet of metal-coating 28 and match with the screw thread on the side of center taper hole in nozzle 7, to realize support to metal-coating 28, location and fixing, metal-coating 28 remainder does not contact with nozzle 7;
Make mozzle 26 concentric with metal-coating 28 during installation, the bottom of mozzle 26 is concordant with the bottom of metal-coating 28;
There is the gap 24 of 10mm ~ 500mm between mozzle 26 and metal-coating 28, in gap 24, heater 25 is installed; Directly do not contact with metal-coating 28 to make mozzle 26;
Described heater 25 is provided with external power interface 5 and is connected with extraneous power supply through scalable plastic tube A3 with 15, and described extraneous power supply is 220V or 380V power supply;
In addition, to be provided with at metal-coating 28 reflecting layer that metallic reflective coating or spraying one deck white reflective coating formed near the surface of heater 25, described white reflective coating coating used is tin oxide;
Described ceramic annulus 31 and mozzle 26 uniform internal diameter, the external diameter of pottery annulus 31 is less than metal-coating 28 bottom external diameter and is greater than metal-coating 28 bottom internal diameter, there is a boss at the edge in the pottery inner footpath of annulus 31, and this boss structure matches with the recessed portion of mozzle 26 bottom; Between the extension and the extension of ceramic annulus 31 of boss, have screw, the position of this screw corresponds to gap between heat pipe 26 and metal-coating 28 and near the inwall of metal-coating 28; Also have corresponding screw at the position that the top of metal-coating 28 and this position are corresponding simultaneously; The quantity of screw is 6;
The screw of another side corresponding to there being boss one side on pottery annulus 31 is provided with corresponding recessed hole, and the size in this hole is to ensure that the embedding of ceramic-seal ring 29 is installed;
Pottery annulus 31 is installed to the bottom of mozzle 26 and is embedded in metal-coating 28; the boss of pottery annulus 31 is embedded on the recessed portion of mozzle 26 bottom; after installing, ensure that another side corresponding with there being boss one side on ceramic annulus 31 flushes with the lower surface of metal-coating 28;
The upper material with often occurring to block of inner surface spraying of ceramic annulus 31, as metal, alloy molten solution, metal oxide or metallic compound are difficult to the material of adhesion;
Described metal screw 32 bottom, with first using nut, successively through after screw corresponding on screw corresponding on ceramic annulus 31 and metal-coating 28, the metal screw 32 being positioned at metal-coating 28 upper position place is tightened with locking nut 33;
In ceramic annulus 31 screw, the position of adjacent nut is put into ceramic-seal ring 29 and is adopted with ceramic annulus 31 and is threaded subsequently.
Ceramic-seal ring 29 is adopted to seal at metal-coating 28 and the gap location of mozzle 26 bottom, described ceramic-seal ring 29 material selection zirconyl phosphate ceramics, aluminum phosphate or microcrystal glass processable ceramic;
Atomisation tower 12 and nozzle 7 lower surface are tightly connected by scalable plastic tube B9, two and half foretell round metal cylindrical barrel 30 is placed in inside and outside two metallic channels on nozzle 7 lower surface and atomisation tower respectively, is placed in respectively up and down in the metallic channel of on nozzle 7 lower surface and atomisation tower 12;
Described mozzle 16 selective oxidation aluminium pottery;
Described metal-coating 14 selects stainless steel;
The mode that described heater 26 selects electric furnace heating wire to be wound around plays a role;
Described scalable plastic tube A3 and scalable plastic tube B9 adopts high-temperature nylon extension flexible ventilation ducting;
Described gloves are plastics thin type gloves.
Adopt a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking provided by the invention to be atomized and prepare metallic aluminium powder, there is not the phenomenon that aluminium oxide blocks in the mozzle mouth of pipe, the whole year can continuous seepage.Compared with existing powder by atomization device, the totally-enclosed powder by atomization device preventing high-melting-point substances from blocking provided by the invention, the low melting point tamper of the mozzle mouth of pipe oxide of atomizer, nitride and other high-melting-point substances blockage problem and the formation of elimination metal or alloy can be solved, realize continuous seepage, reduce cost, improve product quality and production efficiency.
Foregoing be only the present invention conceive under basic explanation, and according to any equivalent transformation that technical scheme of the present invention is done, all should protection scope of the present invention be belonged to.
Claims (11)
1. prevent the totally-enclosed gas atomization pulverization device that high-melting-point substances blocks, comprise insulation crucible, atomisation tower, characterized by further comprising atomizer, scalable plastic tube A and scalable plastic tube B;
Wherein said atomizer comprises mozzle, nozzle, metal-coating, heater, metal screw, ceramic annulus and ceramic-seal ring;
Described nozzle is provided with air inlet pipe and gas outlet;
The upper end center sections of described metal-coating divides the hole having and adapt with mozzle external diameter, in order to install mozzle, the lower end of metal-coating is uncovered, and metal-coating becomes the bullet of 80 ° ~ 89 ° from top to bottom at the tapered at one end at 1/3 ~ 1/2 place near bottom outlet;
Be provided with screw thread in the outside being apered to the part of bullet of metal-coating and match with the screw thread on the side of center taper hole in nozzle, to realize support to metal-coating, location and fixing, metal-coating remainder does not contact with nozzle;
Make mozzle concentric with metal-coating during installation, the bottom of mozzle is concordant with the bottom of metal-coating;
There is the gap of 10mm ~ 100mm between mozzle and metal-coating, in gap, heater is installed;
Described heater is provided with external power interface and is connected with external power supply; Described external power supply is 220V or 380V power supply;
Described ceramic annulus and mozzle uniform internal diameter, the external diameter of pottery annulus is less than metal-coating bottom external diameter and is greater than metal-coating bottom internal diameter, there is a boss at the edge in the pottery inner footpath of annulus, and this boss structure matches with the recessed portion of mozzle bottom; Between the extension and the extension of ceramic annulus of boss, have screw, the position of this screw corresponds to gap between mozzle and metal-coating and near the inwall of metal-coating; The position corresponding with this position on the top of metal-coating also has the screw of respective numbers simultaneously; The quantity of screw is 4 ~ 8;
The screw of another side corresponding to there being boss one side on pottery annulus is provided with corresponding recessed hole, and the size in this hole is the same with ceramic-seal ring external diameter size, to ensure that the embedding of ceramic-seal ring is installed;
Pottery annulus is installed to the bottom of mozzle and is embedded in metal-coating; the boss of pottery annulus is embedded on the recessed portion of mozzle bottom; after installing, ensure that another side corresponding with there being boss one side on ceramic annulus flushes with the lower surface of metal-coating;
The inner surface spraying of pottery annulus upper and metal, alloy molten solution, metal oxide or metallic compound are difficult to the material adhered to;
Described metal screw bottom nut, then successively through after screw corresponding on screw corresponding on ceramic annulus and metal-coating, the metal screw being positioned at metal-coating upper position place is tightened with locking nut, subsequently in ceramic annulus screw adjacent nut position on put into ceramic-seal ring and adopt with ceramic annulus and be threaded;
Described scalable plastic tube A is tightly connected with the nozzle upper surface of insulation crucible and atomizer respectively, atomisation tower is connected by scalable plastic tube B with outside the lower surface nozzle gas outlet of nozzle, scalable plastic tube A bottom is provided with vacuum pump interface near the position of nozzle, for external vavuum pump, the drain hole valve that atomisation tower bottom is provided with and atomisation tower valve, two and half foretell round metal cylindrical barrel is placed in inside and outside two metallic channels on nozzle lower surface and atomisation tower respectively, formed by insulation crucible, scalable plastic tube A, nozzle, scalable plastic tube B, atomisation tower, the totally-enclosed system architecture that atomisation tower valve and the vavuum pump be connected with scalable plastic tube A form,
Inner at scalable plastic tube A, the insulation crucible one end be connected with scalable plastic tube A, it is connected with insulation crucible valve by pipeline;
To be bell-mouthed pipeline again through one end with the upper port of the mozzle of atomizer be close to by metal ferrule and the bolt be located on metal ferrule and pad insulation crucible valve is connected, and they are all placed in the inside of scalability plastic tube A;
In addition, scalable plastic tube A correspond to metal ferrule, metal-coating upper limb place position on and scalable plastic tube B on the position of the ceramic annulus of corresponding atomizer, be respectively provided with pair of glove; Each gloves adopt adhesive to be connected with scalable plastic tube A or scalable plastic tube B respectively;
In addition, the position scalable plastic tube A corresponding to mozzle and the position of ceramic annulus corresponding to atomizer on scalable plastic tube B arrange structure identical get thing mouth;
Thing mouth and scalable plastic tube B get thing mouth to getting on described scalable plastic tube A, be respectively equipped with two layers of vacuum valve, i.e. internal layer vacuum valve and outer vacuum valve, outer vacuum valve adopts vacuum rubber pipe to be connected with external multiple-pass joint, and the vavuum pump that external multiple-pass joint is connected near the position of nozzle with above-mentioned scalable plastic tube A bottom is again connected.
2. a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking as claimed in claim 1, is characterized in that the metal-coating of described atomizer is provided with metallic reflective coating or spraying one deck white reflective coating and is formed reflecting layer near the surface of heater.
3. a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking as claimed in claim 2, is characterized in that the metal-coating of described atomizer is tin oxide near the coating that the white reflective coating of the surface spraying of heater is used.
4. a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking as described in claim 1,2 or 3, is characterized in that the ceramic-seal ring material selection zirconyl phosphate ceramics in described atomizer, aluminum phosphate or microcrystal glass processable ceramic.
5. a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking as claimed in claim 4, is characterized in that described scalable plastic tube A and scalable plastic tube B is inner coated glass fibre, middlely adopts stainless steel elastic helix steel wire reinforcement, the outside scalable exotic material for Polypropylence Sheet formation.
6. a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking as claimed in claim 5, is characterized in that described scalable plastic tube A and scalable plastic tube B is high-temperature nylon extension flexible ventilation ducting.
7. a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking 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 gas atomization pulverization device preventing high-melting-point substances from blocking 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 gas atomization pulverization device preventing high-melting-point substances from blocking as claimed in claim 8, is characterized in that described metal-coating is carbon steel or stainless steel.
10. a kind of totally-enclosed gas atomization pulverization device preventing high-melting-point substances from blocking as claimed in claim 9, is characterized in that described round metal cylindrical barrel is stainless steel.
11. a kind of totally-enclosed gas atomization pulverization devices preventing high-melting-point substances from blocking as claimed in claim 10, is characterized in that described heater is electric furnace heating wire or silicon carbon rod.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110452318.XA CN102528058B (en) | 2011-12-30 | 2011-12-30 | Totally-enclosed gas atomizing powder making device for preventing high-melting-point substance from being blocked |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110452318.XA CN102528058B (en) | 2011-12-30 | 2011-12-30 | Totally-enclosed gas atomizing powder making device for preventing high-melting-point substance from being blocked |
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| CN102528058A CN102528058A (en) | 2012-07-04 |
| CN102528058B true CN102528058B (en) | 2014-12-17 |
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| CN201110452318.XA Expired - Fee Related CN102528058B (en) | 2011-12-30 | 2011-12-30 | Totally-enclosed gas atomizing powder making device for preventing high-melting-point substance from being blocked |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109304471B (en) * | 2018-10-30 | 2023-10-03 | 湖南天际智慧材料科技有限公司 | Plasma atomizing powder process equipment suitable for high-melting point metal |
| CN109249032B (en) * | 2018-11-23 | 2022-01-21 | 上海电气集团股份有限公司 | Atomized powder-making catheter |
| WO2020161884A1 (en) | 2019-02-08 | 2020-08-13 | 三菱日立パワーシステムズ株式会社 | Metal powder manufacturing device, and crucible apparatus and molten metal nozzle for same |
| CN115647375A (en) * | 2022-11-16 | 2023-01-31 | 江苏威拉里新材料科技有限公司 | Feeding mechanism of gas atomization powder making equipment and using method thereof |
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| US4631013A (en) * | 1984-02-29 | 1986-12-23 | General Electric Company | Apparatus for atomization of unstable melt streams |
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| CN201744413U (en) * | 2010-07-06 | 2011-02-16 | 河南省远洋铝业有限公司 | Anti-blocking atomizer nozzle for preparing superfine powder metal |
| CN202498210U (en) * | 2011-12-30 | 2012-10-24 | 上海应用技术学院 | Totally-enclosed gas atomization pulverization apparatus for block resistance of high-melting point substance |
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| US4631013A (en) * | 1984-02-29 | 1986-12-23 | General Electric Company | Apparatus for atomization of unstable melt streams |
| CN2216441Y (en) * | 1994-09-27 | 1996-01-03 | 国相杰 | Superfine aluminium spray nozzle |
| 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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| CN202498210U (en) * | 2011-12-30 | 2012-10-24 | 上海应用技术学院 | Totally-enclosed gas atomization pulverization apparatus for block resistance of high-melting point substance |
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| CN102528058A (en) | 2012-07-04 |
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