CN206824665U - The adjustable circular seam type gas atomizer of nozzle gap - Google Patents
The adjustable circular seam type gas atomizer of nozzle gap Download PDFInfo
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- CN206824665U CN206824665U CN201720735502.8U CN201720735502U CN206824665U CN 206824665 U CN206824665 U CN 206824665U CN 201720735502 U CN201720735502 U CN 201720735502U CN 206824665 U CN206824665 U CN 206824665U
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- cavity
- bottom plate
- nozzle gap
- mozzle
- atomizer
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Abstract
The adjustable circular seam type gas atomizer of nozzle gap disclosed in the utility model, including cavity, one end of cavity are connected with mozzle, and the other end of cavity is provided with discoidal bottom plate, and bottom plate is threadedly coupled with the bottom inside of cavity；The inner side of cavity and the side of mozzle is provided with segmental arc, the aditus laryngis of extendible is formed between bottom plate and segmental arc.The atomizer nozzle gap is adjustable in the larger context, thus prepares the metal dust of different-grain diameter scope using the single atomizer can, and atomization plant cost of investment and hold facility site area is greatly lowered；The nozzle can continuously, precisely, easily adjust nozzle gap, flexibility of the atomization plant to the applicability and organization of production of metal material can be expanded, and the stability of metal dust production process can also be significantly lifted, help to obtain particle shape rounding, granularity concentration, the high-quality ultrafine metal powder material of the high rate of output.
Description
Technical field
The utility model belongs to power metallurgy equipment technical field, is related to a kind of metal dust gas atomizer, specifically relates to
A kind of and adjustable circular seam type gas atomizer of nozzle gap.
Background technology
Atomizer is the core component for preparing metal powder material, and its major function is that high-temperature fusant progress moment is broken
It is broken, it is allowed to be changed into the discrete droplet that size does not wait under surface tension effects, above-mentioned droplet turns through quick solidification again
It is changed into metal dust.
Atomization technique commonly used in the prior art has second-rate atomization, centrifugal atomizing, vacuum atomizing and ultrasonic atomization etc., and
Using it is most be second-rate atomization technique.Second-rate atomization mainly passes through high speed and high pressure atomizing medium caused by atomizer,
Liquid metal is ground into tiny drop, metal dust is formed through quick solidification.Compared with other atomization methods, second-rate atomization
It is more cost-effective, it is more efficient.The atomizing medium of second-rate atomization generally selects the not gas and liquid with fusant reaction.
Melt bottom pour ladle is held on second-rate atomizer, under connect atomisation tower, melt flows through moment from centre, the high energy caused by nozzle
Amount, high speed gas shock, fine drop is broken into, in free flight process cooled and solidified into alloy powder, is particularly suitable for making
Make grain type rounding, even-grained submicron metal.
Difference according to atomizing medium to the metal liquid stream mode of action, atomizer nozzle are divided into that V-type, annular ring type be tapered and ring
Seam is tapered.The tapered atomizer of circular seam type can ensure that gas gathers and be acted in any in metal liquid stream, meanwhile, using arc
Inner chamber not only contribute to air-flow it is unimpeded and reduce energy loss, and advantageously in nozzle shape design.
Circular seam type nozzle has three types：Shrinkage type, expanding and folding and unfolding type.Wherein, folding and unfolding type nozzle (Laval
Nozzle) high pressure atomizing nozzle identical atomizing effect can be produced under relatively low air pressure, the air stream outlet speed of maximum is obtained, its
Using increasingly extensive.Production practices are found, in the case where atomization angle and gas pressure are certain, nozzle gap (nozzle aditus laryngis
Locate gap thickness) it is smaller, atomizing pressure is bigger, and powder mean particle sizes are smaller.Therefore, particle shape rounding, even-grained is prepared
Superfine alloy powder, it is necessary to be strictly finely controlled nozzle gap.However, in actual production, or because of technical know-how, or edge
Produced in the orientation of product, or due to technology aging, the design data about atomizer is extremely limited, to atomizer nozzle gap
Adjustment often exist larger difficulty even some atomizer nozzle parameters can not adjust at all, constrain to a certain extent
The fast development of research and development of new product process and China's powder the equipment industry of enterprise, it is necessary to explore new mentality of designing and design ginseng
Number.
Utility model content
The purpose of this utility model is to provide a kind of adjustable circular seam type gas atomizer of nozzle gap, utilizes the atomizer
The grain type rounding of various particle size ranges can be prepared, the metal dust that distribution is concentrated.
The utility model is the technical scheme adopted is that the adjustable circular seam type gas atomizer of nozzle gap, including cavity,
One end of cavity is connected with mozzle, and the other end of cavity is provided with the bottom inside spiral shell of discoidal bottom plate, bottom plate and cavity
Line connects；The inner side of cavity and the side of mozzle is provided with segmental arc, extendible is formed between bottom plate and segmental arc
Aditus laryngis.
The characteristics of the utility model, also resides in,
Also include melt bottom pour ladle, melt bottom pour ladle is located at the top of cavity, lute is provided between melt bottom pour ladle and cavity
Layer；Melt bottom pour ladle bottom is provided with bag bottom leakage eye, and leakage eye in bag bottom is corresponding with the upper port of mozzle；Wrap bottom leakage eye and melt it
Between be provided with fusible metal piece；The junction of bottom plate and cavity is provided with sealing ring.
Mozzle is each passed through cavity and bottom plate, and mozzle, cavity and bottom plate are coaxial.
Air admission hole and pressure tap are also respectively provided with cavity.
The position that the bottom of cavity is relative with bottom plate is provided with trip bolt.
Adpting flange is provided with the outside of cavity, bolt hole is provided with adpting flange.
The beneficial effects of the utility model are：Atomizer nozzle gap of the present utility model is adjustable in the larger context,
The metal dust of different-grain diameter scope is thus prepared using the single atomizer can, atomization plant investment is greatly lowered
Cost and hold facility site area；The nozzle can continuously, precisely, easily adjust nozzle gap, be advantageous to improve production
Efficiency, reduce manpower consumption；Flexibility of the atomization plant to the applicability and organization of production of metal material can be expanded, but also
The stability of metal dust production process can be significantly lifted, helps to obtain particle shape rounding, granularity concentration, the height of the high rate of output
Quality super-fine metal powder powder material.
Brief description of the drawings
Fig. 1 is the structural representation of the adjustable circular seam type gas atomizer of the utility model nozzle gap；
Fig. 2 is the adjustable circular seam type gas atomizer aditus laryngis partial structural diagram of the utility model nozzle gap.
In figure, 1. melt bottom pour ladles, 2. bag bottom leakage eyes, 3. mozzles, 4. sealing mud layers, 5. cavitys, 6. adpting flanges, 7. bottoms
Plate, 8. aditus laryngis, 9. trip bolts, 10. bolts hole, 11. sealing rings, 12. air admission holes, 13. pressure taps, 14. fusible metal pieces,
15. liquid metal, 16. segmental arcs.
Embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
The adjustable circular seam type gas atomizer of a kind of nozzle gap of the utility model, as shown in figure 1, including cavity 5, cavity
5 one end is connected with mozzle 3, and the other end of cavity 5 is provided with discoidal bottom plate 7, the bottom inside of bottom plate 7 and cavity 5
Threaded connection；The inner side of cavity 5 and the side of mozzle 3 is provided with segmental arc 16, shape between bottom plate 7 and segmental arc 16
Into the aditus laryngis 8 of extendible.
A kind of adjustable circular seam type gas atomizer of nozzle gap of the utility model, in addition to melt bottom pour ladle 1, melt bottom pour ladle
1 is located at the top of cavity 5, and sealing mud layer 4 is provided between melt bottom pour ladle 1 and cavity 5；The bottom of melt bottom pour ladle 1 is provided with bag bottom
Eye 2 is leaked, leakage eye 2 in bag bottom is corresponding with the upper port of mozzle 3；Fusible metal piece is provided between bag bottom leakage eye 2 and mozzle 3
14；The junction of bottom plate 7 and cavity 5 is provided with sealing ring 11.
Mozzle 3 is each passed through cavity 5 and bottom plate 7, and mozzle 3, cavity 5 and bottom plate 7 are coaxial.
Air admission hole 12 and pressure tap 13 are also respectively provided with cavity 5.
The bottom of cavity 5 position relative with bottom plate 7 is provided with trip bolt 9.
The outside of cavity 5 is provided with adpting flange 6, and bolt hole 10 is provided with adpting flange 6.
As shown in Fig. 2 the atomizing angle at aditus laryngis 8 is θ, contraction section arc radius is 10mm at the center of bottom plate 7, and expansion segment is justified
Arc radius is 37.9mm, then the gap width of aditus laryngis, that is, nozzle gap δ can be adjusted by the spiral lift of bottom plate 7,
On the basis of the bottom end face of cavity 5, if the falling head of bottom plate 7 is h, then according to geometry relation, nozzle gap δ and bottom plate can be obtained
Relation between the h of the distance between 7 lower surfaces and the lower surface of cavity 5：δ=hsin (θ/2)+0.4 (mm).In formula, work as h=0
When, nozzle gap 0.4mm.The anglec of rotation by adjusting bottom plate 7 can realize the adjustment to the falling head h of bottom plate 7, so as to
Effective control that becomes more meticulous to nozzle gap δ is realized, takes this mode in the case where atomizer need not be changed, can be directed to different
Molten metal, prepare the seriation metal dust with different-grain diameter.The control range of h values is -0.1~5mm, corresponding nozzle
Gap is in 0.1~2.1mm scopes.
It is according to the particle size range of the required metal dust produced, first progress atomizer assembling, its installation process, in advance
The sealing ring 11 of refractory material is inserted in the seal groove of the bottom of cavity 5, is then connected through a screw thread mode outside is threaded
Bottom plate 7 screw in the screw of cavity 5 bottom, if predetermined nozzle gap δ ', h value h '=(δ ' -0.4)/sin
(θ/2), after accurately being confirmed with micrometer, tighten screw 9 and are fastened therewith, thereafter insert mozzle 3 matched
In chamber central hole, the assembling to atomizer and the control of nozzle gap are so far completed.Secondly, by bolt hole 10 by atomizer
With the atomisation tower fit sealing of its underpart.Then, appropriate sealing mud layer 4 is laid in the groove at the top of atomizer, and then will
The melt bottom pour ladle 1 that bag bottom leakage eye 2 is contained in bottom is placed on atomizer and confirms, seam positioning safeguards between the two bag bottom
The axiality of eye 2 and the endoporus of mozzle 3 is leaked, then fusible metal piece 13 is placed on bag bottom leakage eye 2.Meanwhile melting preparing metal
Melt, when melt approaches the metallurgical quality for reaching required and the degree of superheat, air supply system is quickly opened, makes the pressure in cavity 5
Power is in 1.2-1.8MPa scopes.Finally, molten metal quickly is poured into melt bottom pour ladle 1, within the time of setting, fusible metal piece
Melt, molten metal flows out under molten bath static pressure and Action of Gravity Field from leakage eye, flows through atomizer nozzle and is atomized, shape
Into metal dust.
By the above-mentioned means, atomizer nozzle gap of the present utility model is adjustable in the larger context, thus uses and be somebody's turn to do
Single atomizer can prepares the metal dust of different-grain diameter scope, and atomization plant cost of investment and equipment is greatly lowered
Occupied ground area；The nozzle can continuously, precisely, easily adjust nozzle gap, be advantageous to improve production efficiency, reduce people
Work consumes；Flexibility of the atomization plant to the applicability and organization of production of metal material can be expanded, and can also significantly be carried
The stability of metal dust production process is risen, helps to obtain particle shape rounding, granularity concentration, the high-quality ultrafine of high rate of output gold
Belong to dusty material.
Claims (6)
1. the adjustable circular seam type gas atomizer of nozzle gap, including cavity (5), one end of cavity (5) are connected with mozzle
(3), it is characterised in that the other end of cavity (5) is provided with discoidal bottom plate (7), bottom plate (7) with the bottom of cavity (5)
Side is threadedly coupled；The inner side of cavity (5) and the side of mozzle (3) is provided with segmental arc (16), the end of bottom plate (7)
The aditus laryngis (8) of extendible is formed between the segmental arc (16).
2. the adjustable circular seam type gas atomizer of nozzle gap as claimed in claim 1, it is characterised in that also leaked including melt
Wrap (1), melt bottom pour ladle (1) is located at the top of cavity (5), and sealing mud layer (4) is provided between melt bottom pour ladle (1) and cavity (5)；
Melt bottom pour ladle (1) bottom is provided with bag bottom leakage eye (2), and bag bottom leakage eye (2) is corresponding with the upper port of mozzle (3)；Wrap bottom leakage
Fusible metal piece (14) is provided between eye (2) and mozzle (3)；The junction of bottom plate (7) and cavity (5) is provided with sealing ring
(11)。
3. the adjustable circular seam type gas atomizer of nozzle gap as claimed in claim 1 or 2, it is characterised in that mozzle 3 divides
Not Chuan Guo cavity (5) and bottom plate (7), and mozzle (3), cavity (5) and bottom plate (7) are coaxial.
4. the adjustable circular seam type gas atomizer of nozzle gap as claimed in claim 1 or 2, it is characterised in that on cavity (5)
It is also respectively provided with air admission hole (12) and pressure tap (13).
5. the adjustable circular seam type gas atomizer of nozzle gap as claimed in claim 1 or 2, it is characterised in that cavity (5)
Bottom is provided with trip bolt (9) with the relative position of bottom plate (7).
6. the adjustable circular seam type gas atomizer of nozzle gap as claimed in claim 5, it is characterised in that outside cavity (5)
Side is provided with adpting flange (6), and bolt hole (10) is provided with adpting flange (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720735502.8U CN206824665U (en) | 2017-06-22 | 2017-06-22 | The adjustable circular seam type gas atomizer of nozzle gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720735502.8U CN206824665U (en) | 2017-06-22 | 2017-06-22 | The adjustable circular seam type gas atomizer of nozzle gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206824665U true CN206824665U (en) | 2018-01-02 |
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| CN201720735502.8U Active CN206824665U (en) | 2017-06-22 | 2017-06-22 | The adjustable circular seam type gas atomizer of nozzle gap |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111730060A (en) * | 2020-04-29 | 2020-10-02 | 北京矿冶科技集团有限公司 | Atomizing spray plate and method for preparing alloy powder with narrow particle size for additive manufacturing through gas atomization |
| RU2756902C1 (en) * | 2021-02-24 | 2021-10-06 | Публичное акционерное общество "Электромеханика" | Adjustable nozzle for two-flow dispersion of metal melt |
| CN114178519A (en) * | 2021-11-10 | 2022-03-15 | 深圳市深汕特别合作区万泽精密科技有限公司 | Tundish flow guide nozzle fixing method and device |
-
2017
- 2017-06-22 CN CN201720735502.8U patent/CN206824665U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111730060A (en) * | 2020-04-29 | 2020-10-02 | 北京矿冶科技集团有限公司 | Atomizing spray plate and method for preparing alloy powder with narrow particle size for additive manufacturing through gas atomization |
| CN111730060B (en) * | 2020-04-29 | 2021-08-17 | 矿冶科技集团有限公司 | Atomizing spray plate and method for preparing alloy powder with narrow particle size for additive manufacturing through gas atomization |
| RU2756902C1 (en) * | 2021-02-24 | 2021-10-06 | Публичное акционерное общество "Электромеханика" | Adjustable nozzle for two-flow dispersion of metal melt |
| CN114178519A (en) * | 2021-11-10 | 2022-03-15 | 深圳市深汕特别合作区万泽精密科技有限公司 | Tundish flow guide nozzle fixing method and device |
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