CN202498211U - Atomizer with nozzle and honeycomb duct prevented from being blocked - Google Patents
Atomizer with nozzle and honeycomb duct prevented from being blocked Download PDFInfo
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- CN202498211U CN202498211U CN2012200697924U CN201220069792U CN202498211U CN 202498211 U CN202498211 U CN 202498211U CN 2012200697924 U CN2012200697924 U CN 2012200697924U CN 201220069792 U CN201220069792 U CN 201220069792U CN 202498211 U CN202498211 U CN 202498211U
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- mozzle
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- coating
- atomizer
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Abstract
The utility model discloses an atomizer with a nozzle and a honeycomb duct prevented from being blocked, which comprises a honeycomb duct, a metal jacket, a nozzle, a heating body A, a ceramic sealing ring, a metal sealing ring, a gasket and the like. The heating body A is arranged in a gap between the honeycomb duct and the metal jacket. A heating body B is arranged in each of gaps of the two air outlet tubes of the nozzle. The inner surface of the metal jacket is provided with a metal reflection film or a sprayed white reflection coating. The lower end part of the metal jacket and the lower end part of the flow guide tube are flush with each other. The end part of a gap between the lower end part of the metal jacket and the lower end part of the flow guide tube is sealed by the ceramic sealing ring. The end parts of the gaps between the two Laval-structure air outlet tubes of the nozzle are in threaded connection and sealed by the metal sealing ring. The atomizer has the functions of effectively preventing metal and alloy from being blocked and solving the blockage problem, which is suitable for melt flow guidance for metal or alloy atomization. The atomizer has the advantages of simple structure, convenient installation, higher production efficiency and the like.
Description
Technical field
The utility model relates to atomizing molten materials with gases makes the used a kind of atomizer that prevents that nozzle and mozzle from stopping up of superfine powder.
Background technology
Powder by gas-atomization is to impact liquid metal or alloy stream with high velocity air, and it is broken into fine droplet, and cooled and solidified becomes the milling method of powder in environment subsequently.The advantages such as production that atomized powder has the sphericity height, oxygen content is low and adapt to multiple metal and alloy powder have become the technological main developing direction of high-performance and special alloy powder preparation.
The overall process of atomizing is extremely complicated, and atomizing effect receives multiple factor affecting, and the core of atomization technique is the surface ability that how kinetic energy of gas is changed into efficiently atomized powder.The degree of grinding of metal liquid stream in the atomizing, key depends on the kinetic energy of air-flow.Relation according to kinetic energy and quality, speed can be known, augmented flow and speed all can make kinetic energy increase.Therefore square being directly proportional of kinetic energy and speed, improve the speed of air-flow, and its effect can be more obvious.Common gas atomization great majority all are the subsonic speed gas atomization, and under subsonic speed gas atomization situation, the size distribution of powder is very wide, and the acquisition of small particle diameter and narrower size distribution powder granule becomes possibility and the supersonic gas atomization technique makes more.
Atomizer is as the core component of gas atomization technology, and its structure and performance are the prerequisites of decision atomization quality height.
The version of atomizer is varied in the prior art; Be divided into annular distance type atomizer and circumferential weld type atomizer according to nozzle arrangements; No matter be the circumferential weld type or the atomizer of annular distance type structure; Nozzle and mozzle phenomenon of blocking in use often take place, and this is caused by following several respects reason at least: the one, and 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.In case nozzle and mozzle stop up, production can't be proceeded.In this case, have only the whole atomizer of replacing, this has increased production cost greatly, and influences preparation efficiency and product quality.
At present; The technology of atomizer being improved renewal has a lot; Related patent U.S. Patent No. also has a lot; But these technology are relevant how to control the metal dust granularity and aspect such as how to enhance productivity mostly, and the utility model people is a kind of sprayer in denomination of invention, and the patent No. is to have mentioned a kind of solution atomizer blockage problem in 201110452080.0 patent applications; 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 utility model technical problem that will solve just.
Summary of the invention
One of purpose of the utility model is that a kind of atomizer that prevents that nozzle and mozzle from stopping up is provided in order to solve above-mentioned technical problem.
The technical scheme of the utility model
A kind of atomizer that prevents that nozzle and mozzle from stopping up comprises mozzle, nozzle, metal-coating, heater A, ceramic-seal ring, metallic packing ring and packing ring etc.;
Described nozzle is provided with the escape pipe of two air inlet pipe and two Laval structures, and the 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; And 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, and the metallic packing ring bottom protrudes from nozzle escape pipe bottom;
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 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, and is concordant with the bottom of metal-coating with the bottom that guarantees mozzle;
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 a kind of atomizer that prevents that nozzle and mozzle from stopping up of the utility model uses, take place under the situation of metal or low melting point obstruction; Can be through heater A and heater B energising; Heating makes its fusing that heats up to tamper, reaches to solve the purpose that metal or alloy stops up;
In addition, preferably being provided with metallic reflective coating near the surface of heater A or spraying forms one deck white reflecting coating at metal-coating, 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;
Gap location in metal-coating and mozzle bottom adopts the ceramic-seal ring seal with screwed joint, and the ceramic-seal ring bottom protrudes from the metal-coating bottom;
Described mozzle, metal-coating, ceramic-seal ring and metallic packing ring can be different according to atomization metal or alloy powder, select material different;
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 selection intensity be high, be easy to process, inexpensive material, like carbon steel or stainless steel.
Described ceramic-seal ring material is selected basic zirconium phosphate pottery, aluminum phosphate or microcrystal glass processable ceramic for use;
Described packing ring adopts plastics or metal washer;
Described heater A or heater B are different, optional with electric furnace heating wire, silicon carbon rod according to atomization metal or alloy powder.
Above-mentioned a kind ofly prevent that the installation process of the atomizer that nozzle and mozzle stop up is following:
At first in the gap of the escape pipe of two laval structures of nozzle, heater B is installed respectively, in end metallic packing ring is installed respectively afterwards near the gap of the escape pipe of two laval structures of nozzle;
Then heater A is installed in the metal-coating the inside;
Put into mozzle in the inboard of heater A subsequently, the center of mozzle overlaps with the center of metal-coating, places ceramic-seal ring at metal-coating and exit, mozzle bottom then, installs thereby accomplish a kind of atomizer that prevents that nozzle and mozzle from stopping up.
Utilize above-mentioned a kind of atomizer that prevents that nozzle and mozzle from stopping up to atomize and prepare the metal or alloy ultra-micro powder; Can produce after being about to the metal-coating of above-mentioned atomizer and pipeline on the melt stove being connected; Just in case the situation that metal or alloy blocks takes place, energized is passed through heater A and heater B heating or changes mozzle to get final product in the production process.
The beneficial effect of the utility model
A kind of atomizer that prevents that nozzle and mozzle from stopping up of the utility model; Be through changing the structure of atomizer; Promptly between mozzle and metal-coating, install in the heater A, also in the gap of the escape pipe of two Laval structures of nozzle, heater B is installed respectively, through heating simultaneously; Not only 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 further eliminate the interference of low melting point tamper; Therefore the rum point that 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.
And the use of the escape pipe Laval structure of nozzle can make high pressure draught be accelerated to the supersonic speed level through atomizer, helps obtaining more small particle diameter and narrower size distribution powder granule.
In addition; Gapped heat insulation between mozzle and the metal-coating, metal-coating does not contact with mozzle, and area of dissipation reduces; In the gap of two escape pipes introducing Laval structures of nozzle heater B preheating simultaneously atomization gas is installed respectively; Make mozzle directly not contact the high speed cold air-flow, these measures can keep the temperature of melt significantly, reduce the melt atomizing degree of superheat and reduce the danger of stopping up; 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.
Simultaneously; The utility model a kind of prevents that most materials adopts metal material in the atomizer that nozzle and mozzle stop up, and be not only cheap, easy to process, reusable; And can prevent that the mozzle end from contacting with the high speed cold air-flow; Heating status is significantly improved, and thermal shock resistance improves, and is difficult for bursting.Because the protection of metal-coating, the mozzle security performance improves, and difficultly fractures or damages.
This shows, a kind of atomizer that prevents that nozzle and mozzle from stopping up of the utility model, simple in structure, easy to use, cost is low, can be repeatedly used, and anti-clogging, mediation are stopped up effective, can not damage atomizer with stopping up mediation apace.Can save work greatly, enhance productivity, reduce labour intensity into mediation or replacing nozzle and mozzle.
Description of drawings
The atomizer structure sketch map of Fig. 1, the utility model, 1 is mozzle among the figure, and 2 is packing ring, and 3 is metal-coating; 4 is heater A, and 5 is the gap between mozzle and the metal-coating, and 6 is the white reflecting coating, and 7 is ceramic-seal ring; 8 is nozzle, and 91 and 92 is two air inlet pipe of nozzle, and 101 and 102 is the escape pipe of two Laval structures of nozzle; 111 and 112 is heater B, and 121 and 122 is metallic packing ring, and 131 and 132 is the gap of escape pipe of two laval structures of nozzle.
The specific embodiment
Below through embodiment and combine accompanying drawing that the utility model is further set forth, but do not limit the utility model.
Embodiment 1
A kind of atomizer that prevents that nozzle and mozzle from stopping up; Its structural representation is as shown in Figure 1; It also comprises gap 5, heater A4, white reflecting coating 6, ceramic-seal ring 7, heater B111 and B112, metallic packing ring 121 and 122, packing ring 2 between metal-coating 3, mozzle 1 and the metal-coating 3 by mozzle 1, nozzle 8.
Described nozzle 8 is provided with the escape pipe 101 and 102 of 91,92 and two Laval structures of two air inlet pipe; Angle between two escape pipes 101 of nozzle and 102 the axis is between 20 ° ~ 75 °; The escape pipe 101 of two laval structures of nozzle 8 and peripheral 10mm ~ 100mm place of 102 are provided with gap 131 and 132; Heater B111 and B112 are all installed in gap 131 and 132 inside; The escape pipe 101 of two laval structures of nozzle and 102 gap 131 adopt metallic packing ring 121 to be connected with 122 thread seals with 132 end, and assurance metallic packing ring 121 and 122 bottom protrude from escape pipe 101 and 102 the bottom of two laval structures of nozzle after the installation;
The upper part of described metal-coating 3 has the hole that adapts with mozzle 1 external diameter, and in order to mozzle 1 to be installed, the lower end of metal-coating 3 is uncovered;
Described mozzle 1 adopts aluminium oxide ceramics; Make mozzle 1 concentric during installation with metal-coating 3; The upper end of the lower edge of the upper end of mozzle 1 and metal-coating 3 is provided with the groove of corresponding recessed portion near corresponding position, the edge of internal diameter; The packing ring 2 that place the groove the inside plays the role of positioning, and is concordant with metal-coating 3 bottoms to guarantee mozzle 1;
The gap 5 that 10mm ~ 100mm is arranged between mozzle 1 and the metal-coating 3; 5 li heater A4 is installed in the gap; Be respectively equipped with external power interface on heater A4 and heater B111 and the B112 and be connected with extraneous power supply;, the utility model a kind of take place in preventing atomizer use that nozzle and mozzle stop up under the situation that metal or low melting point stop up; Can be through heater A4 and heater B111 and B112 energising, heating makes its fusing that heats up to tamper, reaches to solve the purpose that metal or alloy stops up;
In the surface spraying one deck white reflecting coating 6 of metal-coating 3 near heater A4, when heater A4 worked, the heat of 6 couples of heater A4 of white reflecting coating radiation played reflex, prevents the consumption of heat;
The used coating of described white reflecting coating is preferably tin oxide;
5 near 7 seals with screwed joint of mozzle 1 bottom employing ceramic-seal ring in the gap, and ceramic-seal ring 7 bottoms protrude from the bottom of metal-coating 3.
Application implementation example 1
The embodiment 1 described a kind of application of atomizer in the preparation of superfine metal aluminium powder that prevents that nozzle and mozzle from stopping up, concrete grammar is following:
The assembling of atomizer
At first installation heater B111 and B112 in the gap 131 and 132 that the escape pipe 101 and 102 places of two Laval structures of nozzle are provided with; Adopt metallic packing ring 121 with 122 thread seals to be connected with 102 gap 131 with 132 end at the escape pipe 101 near two laval structures of nozzle afterwards, assurance metallic packing ring 121 and 122 bottom protrude from escape pipe 101 and 102 the bottom of two laval structures of nozzle after the installation;
Heater A4 then is installed in metal-coating 3 the insides; Put into mozzle 1 in heater A4 inboard subsequently; Load onto ceramic-seal ring 7 in metal-coating 3 and mozzle 1 lower end at last, thereby accomplish the installation of atomizer;
Utilize above-mentioned a kind of atomizer that prevents that nozzle and mozzle from stopping up preparation metallic aluminium powder that atomizes; Can produce after being about to the metal-coating 3 of above-mentioned atomizer and pipeline on the melt stove being connected; The situation that metallic aluminium blocks just in case take place in nozzle and mozzle in the production process, and energized heats, and the metal phenomenon of blocking does not appear in nozzle and exit, mozzle bottom as a result; And can produce continuously the whole year, improved flour extraction and production efficiency greatly.
Can find out from The above results, compare that a kind of use of atomizer in the preparation of metal or alloy ultra-micro powder that prevents that nozzle and mozzle from stopping up of the utility model not only can solve the obstructing problem of metal or alloy with existing atomizer; And help the more acquisition of small particle diameter and narrower size distribution powder granule; Thereby reduced the loss of material, promptly practiced thrift material, reduced production cost; Also improve the quality of product, improved production efficiency.
Foregoing is merely the basic explanation under the utility model design, and according to any equivalent transformation that the technical scheme of the utility model is done, all should belong to the protection domain of the utility model.
Claims (8)
1. an atomizer that prevents that nozzle and mozzle from stopping up comprises mozzle, nozzle, metal-coating, heater A, ceramic-seal ring;
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 is concentric with metal-coating;
Be provided with the gap of 10mm ~ 100mm between mozzle and the metal-coating, heater A is installed in the gap;
Gap location in metal-coating and mozzle bottom adopts the ceramic-seal ring seal with screwed joint, and the ceramic-seal ring bottom protrudes from the metal-coating bottom;
It is characterized in that also comprising a packing ring; The upper end of lower edge and metal-coating that described packing ring is placed in the upper end of mozzle is provided with in the groove of corresponding recessed portion near corresponding position, the edge of internal diameter, and the mozzle bottom is concordant with the metal-coating bottom when guaranteeing to install;
And described nozzle is provided with the escape pipe of two air inlet pipe and two Laval structures, and the angle between the axis of the escape pipe of two Laval structures of described nozzle is between 20 ° ~ 75 °;
Wherein the peripheral 10mm ~ 100mm place of the escape pipe of each laval structure all is provided with the gap; Heater B all is installed in the gap; And 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, and the metallic packing ring bottom protrudes from nozzle escape pipe bottom;
Be respectively equipped with external power interface on described heater A and the heater B and be connected with extraneous power supply.
2. a kind of atomizer that prevents that nozzle and mozzle from stopping up as claimed in claim 1 is characterized in that being provided with one deck white reflecting coating that metallic reflective coating or spraying form at metal-coating near the inner surface of heater A.
3. a kind of atomizer that prevents that nozzle and mozzle from stopping up as claimed in claim 2 is characterized in that the used coating of described white reflecting coating spraying is tin oxide.
4. a kind of atomizer that prevents that nozzle and mozzle from stopping up as claimed in claim 3 is characterized in that described heater A or heater B are electric furnace heating wire or silicon carbon rod.
5. a kind of atomizer that prevents that nozzle and mozzle from stopping up as claimed in claim 4 is characterized in that described ceramic-seal ring material selects basic zirconium phosphate pottery, aluminum phosphate or microcrystal glass processable ceramic for use.
6. a kind of atomizer that prevents that nozzle and mozzle from stopping up as claimed in claim 5 is characterized in that described metal-coating, metallic packing ring adopt carbon steel or stainless steel.
7. a kind of atomizer that prevents that nozzle and mozzle from stopping up as claimed in claim 6 is characterized in that described packing ring adopts plastics or quoit sheet.
8. like the described a kind of atomizer that prevents that nozzle and mozzle from stopping up of the arbitrary claim of claim 1 ~ 7, it is characterized in that described mozzle material selects aluminium oxide ceramics, silicon nitride ceramics, boron nitride ceramics, zirconia ceramics or silicon carbide ceramics for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200697924U CN202498211U (en) | 2012-02-29 | 2012-02-29 | Atomizer with nozzle and honeycomb duct prevented from being blocked |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200697924U CN202498211U (en) | 2012-02-29 | 2012-02-29 | Atomizer with nozzle and honeycomb duct prevented from being blocked |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202498211U true CN202498211U (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200697924U Withdrawn - After Issue CN202498211U (en) | 2012-02-29 | 2012-02-29 | Atomizer with nozzle and honeycomb duct prevented from being blocked |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202498211U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528060A (en) * | 2012-02-29 | 2012-07-04 | 上海应用技术学院 | Atomizer capable with nozzle and flow guide tube prevented from blockage |
| RU2803171C1 (en) * | 2023-03-20 | 2023-09-07 | Федеральное государственное бюджетное учреждение науки Институт физики твердого тела имени Ю.А. Осипьяна Российской академии наук (ИФТТ РАН) | Impact mill |
-
2012
- 2012-02-29 CN CN2012200697924U patent/CN202498211U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102528060A (en) * | 2012-02-29 | 2012-07-04 | 上海应用技术学院 | Atomizer capable with nozzle and flow guide tube prevented from blockage |
| CN102528060B (en) * | 2012-02-29 | 2013-12-04 | 上海应用技术学院 | Atomizer capable with nozzle and flow guide tube prevented from blockage |
| RU2803171C1 (en) * | 2023-03-20 | 2023-09-07 | Федеральное государственное бюджетное учреждение науки Институт физики твердого тела имени Ю.А. Осипьяна Российской академии наук (ИФТТ РАН) | Impact mill |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121024 Effective date of abandoning: 20131204 |
|
| RGAV | Abandon patent right to avoid regrant |