CN107164649B - A kind of rotary gas foam device - Google Patents

A kind of rotary gas foam device Download PDF

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Publication number
CN107164649B
CN107164649B CN201710583102.4A CN201710583102A CN107164649B CN 107164649 B CN107164649 B CN 107164649B CN 201710583102 A CN201710583102 A CN 201710583102A CN 107164649 B CN107164649 B CN 107164649B
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CN
China
Prior art keywords
gas
molten aluminum
foaming
efferent duct
foam
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CN201710583102.4A
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Chinese (zh)
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CN107164649A (en
Inventor
黄招凤
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Zhejiang Jintang Plastic Technology Co.,Ltd.
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Zhejiang Poly Precision Equipment Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/08Alloys with open or closed pores
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/08Alloys with open or closed pores
    • C22C2001/083Foaming process in molten metal other than by powder metallurgy
    • C22C2001/086Gas foaming process

Abstract

The present invention relates to a kind of rotary gas foam devices, including foaming storehouse and the drive component being fixedly installed on above the foaming storehouse, further include molten aluminum efferent duct and gas output tube, the molten aluminum efferent duct is vertically rotatably dispose in the top in the foaming storehouse, it is internal to be hollow and is arranged, and multiple fluid holes by opening up thereon are connected with the inside for foaming storehouse;The gas output tube is sealedly and fixedly connected through the molten aluminum efferent duct and with its axial both ends of the surface, and one end of the gas output tube is fixedly connected with the driving component, and other end is that closing is arranged, and gas spout is offered above the end face;Molten aluminum is subjected to High voltage output by high-pressure foam gas, then is broken up through gas curtain, molten aluminum repeatedly comes into full contact with foamed gas, realizes the gas foaming of molten aluminum, solves the problems, such as that foaming existing in the prior art is uneven.

Description

A kind of rotary gas foam device
Technical field
The present invention relates to foaming aluminum production equipment technology more particularly to a kind of rotary gas foam devices.
Background technology
Since aluminium density is low, rigidity is high, corrosion-resistant and processing forming is good so that the application of aluminium continues to increase.This Kind trend is in auto industry, and household electrical appliance and building industry are particularly evident, in these fields to complex shape and more high-strength The aluminium of degree has huge demand;Currently, preparing foamed aluminium using foam melt method, basic principle is that certain foams Agent is added in the aluminium or aluminium alloy of melting, and foaming agent decomposes at high temperature, discharges gas, is stranded in melt, shape after solidification At foam metal.Between the foamed aluminium hole that this method is produced independently of each other, it can be used as sound-absorbing padded coaming, but the disadvantage is that gas Pore size distribution lack of homogeneity, operating difficulties, production are uncontrollable.
Application No. is a kind of foaming aluminum holding furnace hopper biographies disclosed in 201520070669.8 for Chinese utility model patent Dynamic and agitating device, including entrance roller-way steel construction, entrance guide roller group, siege steel construction, entrance fire door and transmission Device, siege fire resistant heat preserving lining, thermocouple temperature measuring apparatus, heating element, roller track group, foaming slot, agitator, venting, Chain wheel rotation device, transmission mechanism, siege expansion device and siege.The utility model one side furnace bottom roller group is lifted with sprocket wheel Device supports foaming slot using furnace bottom refractory brick, and foaming aluminum liquid stream enters in the slot that foams after completing to foam, and hereafter furnace bottom roller group arrives Working position runs well, and another warmed-up foaming slot runs to foaming station, waits to be foamed, ensure that the continuous of foaming work Property;On the other hand, chain wheel rotation device impeller high speed rotation is utilized in agitator, completes stirring for foaming agent and molten aluminum It mixes, ensure that the abundant foaming of foaming agent and bubble are uniformly distributed in molten aluminum.
Foaming is stirred using high speed rotation in said program, realizes the stirring of foaming agent and molten aluminum, foaming agent is at high temperature It decomposes, discharges gas, form bubble in melt, Stirring drives melt, and then forms centrifugal force, and melt is in agitator wall Pressure is formed, reduces air bubble content in melt, while bubble is moved upwards since the pressure in melt is different, therefore the prior art In foamed melt middle and upper part bubble occupation rate be much larger than lower part, cause bubble portion uneven.
Invention content
It is by high-pressure foam gas that molten aluminum is defeated into horizontal high voltage the purpose of the present invention is in view of the deficiencies of the prior art Going out, molten aluminum is then passed through gas curtain, and molten aluminum carries out the injection of foamed gas high pressure and comes into full contact with, and realizes the even foaming of molten aluminum, Solve the problems, such as that foaming existing in the prior art is uneven.
A kind of rotary gas foam device, including foaming storehouse and the driving group that is fixedly installed on above the foaming storehouse Part further includes:
Molten aluminum efferent duct, the molten aluminum efferent duct are vertically rotatably dispose in the top in the foaming storehouse, inside For hollow setting, and multiple fluid holes by opening up thereon are connected with the inside in the foaming storehouse;
Gas output tube;The gas output tube fixes company through the molten aluminum efferent duct and with its axial both ends of the surface sealing It connects, one end of the gas output tube is fixedly connected with the driving component, and other end is that closing is arranged, the top of the end face Offer gas spout;
The multiple gas compression mouths compression of foamed gas inside gas output tube through opening up thereon is in molten aluminum Molten aluminum inside efferent duct, sprays through fluid hole, forms liquid flow line, and drive component drives gas output tube rotation, liquid flow Line is wandered and is formed by gas curtain across gas is sprayed by gas spout in the shape of a spiral.
Further, the fluid hole is located at the inside in the foaming storehouse.
Further, baffle that is opening down and being in umbrella shape setting is provided on the outer circumference surface of the molten aluminum efferent duct, Gas buffer area is formed below the baffle;Inventor thinks that the baffle can be that continuous type is set on the outer circumference surface of molten aluminum efferent duct It sets, interim can also be arranged, baffle plate setting is in the top of fluid hole.
Further, the fluid hole is arranged in a one-to-one correspondence with the gas compression mouth.
Further, the fluid hole and is vertically set along the outer circumference surface array arrangement of the molten aluminum efferent duct It is equipped with multigroup fluid hole.
Further, the baffle is vertically between neighbouring two fluid holes, and is in cone from top to down Shape is arranged.
Further, molten aluminum is sprayed by the fluid hole and is slid in the baffle-panels, rectangular under its outer circumference surface At molten aluminum heavy curtain.
Further, further include the cooperation of rotary seal respectively be installed on the molten aluminum efferent duct and gas output tube the One reducing sleeve and the second reducing sleeve, first reducing sleeve and the second reducing sleeve are located at the foaming storehouse and molten aluminum efferent duct Top.
Further, first reducing sleeve and the second reducing sleeve are logical with the molten aluminum efferent duct and gas output tube respectively The first transfer hole is crossed with the second transfer hole to be connected.
Further, the exhaust pipe being connected with inside it, the top of the exhaust pipe are offered at the top of the foaming storehouse Exhaust outlet is offered on outer circumference surface, the foamed gas inside foaming storehouse push be flexibly set in the air bleeding valve on its top to On be moved to vent position, the inside in storehouse of foaming be connected to pressure release with outside by exhaust outlet and is vented.
Beneficial effects of the present invention:
(1) gas output tube passes through molten aluminum efferent duct in the present invention, and high-pressure foam gas is through gas compression mouth by molten aluminum It is sprayed along fluid hole, the preliminary high pressure gas for carrying out molten aluminum foams, in the liquid flow line dropping process that molten aluminum is formed through fluid hole Across gas curtain, during liquid flow line passes through gas curtain, gas curtain carries out molten aluminum impact, forms the molten aluminum of dispersion Liquid improves the contact area of molten aluminum and foamed gas, completes the gas foaming of molten aluminum;
(2) it is vertically provided with multiple baffles, and baffle tapered setting from top to bottom in the present invention, up and down phase The attaching space unit that molten aluminum and foamed gas are formed between adjacent baffle forms junior unit molten aluminum and melts with the contact of junior unit gas It closes, improves the bubbling efficiency of molten aluminum, in addition the molten aluminum streamline flow above baffle falls within its surface of baffle upper edge and wanders, and extends aluminium The time of contact of liquid and foamed gas, for molten aluminum along baffle circumferential periphery along wandering, the molten aluminum chain for forming annular passes through gas curtain, Molten aluminum and the contact area of foamed gas are further improved, the uniform in foaming degree of molten aluminum is promoted;
(3) inside in foaming storehouse is confined space in the present invention, and top is provided with the exhaust for limiting its internal pressure Valve, when internal pressure is more than the elastic force on air bleeding valve, air bleeding valve is moved upward to exhaust outlet, carries out pressure release, after pressure release, row Air valve moves down, seal foaming storehouse, remains inside hair time foaming storehouse containing sufficient foamed gas, while its internal tool There is certain pressure, be conducive to the foaming of molten aluminum, while ensuring the foaming adequacy of molten aluminum;
In conclusion the configuration of the present invention is simple, the foaming effect of molten aluminum is good, and frothing percentage is high, solves traditional foaming process In foaming it is uneven the problems such as.
Description of the drawings
For the clearer technical solution for illustrating the embodiment of the present invention, required use in being described below to embodiment Attached drawing be briefly described, it should be apparent that, drawings discussed below is only some embodiments of the present invention, for ability For the those of ordinary skill in domain, without creative efforts, it is attached to can also be obtained according to these attached drawings other Figure.
Fig. 1 is overall structure fragmentary view of the present invention;
Fig. 2 is elevational cross-sectional view of the present invention;
Fig. 3 is enlarged diagram at A in Fig. 2;
Fig. 4 is molten aluminum efferent duct structural schematic diagram;
Fig. 5 is enlarged diagram inside foaming storehouse;
Fig. 6 is enlarged diagram at B in Fig. 2;
Fig. 7 is exhaust pipe sectional view;
Fig. 8 is relief valve exhaust condition schematic diagram.
Specific implementation mode
Technical solution in the embodiment of the present invention is clearly and completely illustrated below in conjunction with the accompanying drawings.
Embodiment one
As shown in Figure 1,2 and 3, a kind of rotary gas foam device, including foaming storehouse 1, be fixedly installed on the foaming storehouse 1 Drive component 2, molten aluminum efferent duct 3 and the gas output tube 4 of top, the molten aluminum efferent duct 3 vertically rotate setting Top in the foaming storehouse 1, internal is hollow setting, and by opening up multiple fluid holes 31 and the foaming thereon The inside in storehouse 1 is connected;The gas output tube 4 fixes company through the molten aluminum efferent duct 3 and with its axial both ends of the surface sealing Connect, one end of the gas output tube 4 is fixedly connected with the driving component 2, other end be closing be arranged, the end face it is upper Side offers gas spout 41;Foamed gas inside gas output tube 4 is through opening up multiple gas compression mouths thereon Molten aluminum of 42 compressions inside molten aluminum efferent duct 3, sprays through fluid hole 31, forms liquid flow line 32,2 band of drive component is taken offence Body efferent duct 4 rotates, and liquid flow line 32 is wandered and is formed by gas curtain across gas is sprayed by gas spout 41 in the shape of a spiral Curtain 43.
Embodiment two
It has been recognised by the inventors that preferably to implement the technical solution, it is necessary to further clear embodiment, therefore invent People is carried out the description of example two on the basis of embodiment one.
As shown in Figure 1,2 and 3, a kind of rotary gas foam device, including foaming storehouse 1 and it is fixedly installed on the foaming The drive component 2 of the top of storehouse 1 further includes:
Molten aluminum efferent duct 3, the molten aluminum efferent duct 3 are vertically rotatably dispose in the top in the foaming storehouse 1, in Portion is hollow setting, and is connected with the inside for foaming storehouse 1 by opening up multiple fluid holes 31 thereon;In molten aluminum Molten aluminum inside efferent duct 3 is sprayed along fluid hole 31 forms liquid flow line 32 with its surrounding, and liquid flow line 32 parabolically wear by shape Gas curtain 43 is crossed, the multiple gas foaming of molten aluminum is completed;
Gas output tube 4;The gas output tube 4 is through the molten aluminum efferent duct 3 and solid with its axial both ends of the surface sealing Fixed connection, one end of the gas output tube 4 are fixedly connected with the driving component 2, and other end is that closing is arranged, the end face Top offer gas spout 41;Gas output tube 4 is coaxially disposed with molten aluminum efferent duct 3, and height is contained in 4 inside of gas output tube It calms the anger body, while molten aluminum high pressure is sprayed, and forms horizontal plane shape gas curtain 43 through gas spout 41 below;
Foamed gas inside gas output tube 4 is defeated in molten aluminum through opening up multiple gas compression mouths 42 compression thereon Molten aluminum inside outlet pipe 3 is sprayed through fluid hole 31, forms liquid flow line 32, and drive component 2 drives gas output tube 4 to rotate, liquid Body streamline 32 is wandered and is formed by gas curtain 43 across gas is sprayed by gas spout 41 in the shape of a spiral, in the course of work, Liquid flow line 32 is wandered in the shape of a spiral, different from each Contact position of gas curtain 43, is avoided between molten aluminum Interfere and influence contact effect of the molten aluminum with foamed gas.
It should be noted that as shown in Figures 2 and 3, gas output tube 4 passes through molten aluminum efferent duct 3, and high-pressure foam gas is through gas Body compression port 42 sprays molten aluminum along fluid hole 31, carries out the first high pressure gas foaming of molten aluminum, 32 dropping process of liquid flow line In pass through gas curtain 43, liquid flow line 32 pass through gas curtain 43 during, gas curtain 43 to liquid flow line 32 carry out Impact, molten aluminum form the molten aluminum of diverging, improve the contact area of molten aluminum and foamed gas, while improving molten aluminum frothing percentage.
Further, as shown in Fig. 2, the fluid hole 31 is located at the inside in the foaming storehouse 1, after foamed dose of foaming Molten aluminum carries out gas foaming, and foaming process is in the inside in foaming storehouse 1, and it is sealing space that it is internal.
Further, as shown in Figures 3 and 4, it is provided with opening down on the outer circumference surface of the molten aluminum efferent duct 3 and is in umbrella The baffle 33 of shape setting, 33 lower section of baffle form gas buffer area 34;It is upward through 41 outlet of gas spout for foamed gas Movement, the structure of baffle 33 forms the concave shaped space of top seal, internal to contain more foamed gas, and molten aluminum edge is in it Internal fluid hole 31 sprays, and is contacted with the foamed gas in gas buffer area 34, is conducive to the foaming of molten aluminum.
Further, as shown in Figures 2 and 3, the baffle 33 vertically be located at neighbouring two fluid holes 31 it Between, and tapered arrangement from top to down;Molten aluminum falls shape in a ring along baffle 33 and passes through gas curtain 43.
It should be noted that as shown in Fig. 2, be vertically provided with multiple baffles 33, and baffle 33 is in from top to bottom Taper is arranged, and the attaching space unit of molten aluminum and foamed gas is formed between neighbouring baffle 33, formed junior unit molten aluminum with The contact of junior unit gas is merged, and the bubbling efficiency of molten aluminum is improved, and in addition the molten aluminum streamline flow of 33 top of baffle falls within baffle 33 Its surface of upper edge is wandered, and the time of contact of molten aluminum and foamed gas is extended, and molten aluminum, along wandering, is formed along 33 circumferential periphery of baffle The molten aluminum chain of annular passes through gas curtain, further improves molten aluminum and the contact area of foamed gas, promotes the foaming of molten aluminum The uniformity.
Further, as shown in figure 3, the fluid hole 31 is arranged in a one-to-one correspondence with the gas compression mouth 42, high pressure It steeps gas and compresses molten aluminum along the discharge of fluid hole 31 through gas compression mouth 43, export direction is consistent, is conducive to the strong discharge of molten aluminum.
Further, as shown in figure 5, the fluid hole 31 along the molten aluminum efferent duct 3 outer circumference surface array arrangement, and Vertically it is provided with multigroup fluid hole 31;Fluid hole 31 from top to down arrange by circumference array, due to its high and low position relationship, To the liquid flow line of the ejection of fluid hole 31 of each level height, its shape is different, dry between molten aluminum streamline to avoid It relates to.
Further, as shown in figure 5, molten aluminum is slid by the ejection of the fluid hole 31 along 33 face of the baffle, in outside it The lower section of periphery forms molten aluminum heavy curtain 331, and multiple fluid holes 31 spray molten aluminum on baffle 33, and are wandered along it, between formation Disconnected property fluid, in rotation process, molten aluminum heavy curtain 331 is thrown away by centrifugation force effect in drop-wise molten aluminum efferent duct 3, improve molten aluminum with Foamed gas contacts effect.
Further, as shown in fig. 6, further including that the cooperation of rotary seal respectively is installed on the molten aluminum efferent duct 3 and gas The first reducing sleeve 5 on efferent duct 4 and the second reducing sleeve 6, first reducing sleeve 5 and the second reducing sleeve 6 are located at the hair Steep the top in storehouse 1 and molten aluminum efferent duct 3.
Further, as shown in fig. 6, first reducing sleeve, 5 and second reducing sleeve 6 respectively with the molten aluminum efferent duct 3 It is connected with the second transfer hole 61 by the first transfer hole 51 with gas output tube 4;First reducing sleeve 5 and the second reducing sleeve 6 divide It is not rotatablely connected with molten aluminum efferent duct 3 and the sealing of gas output tube 4.
It further, should as shown in fig. 7, the top in the foaming storehouse 1 offers the exhaust pipe 11 being connected with inside it Exhaust outlet 12 is offered on the top outer circumference surface of exhaust pipe 11, the foamed gas inside foaming storehouse 1 pushes elasticity setting Air bleeding valve 13 in its top is moved upward to 12 position of exhaust outlet, and the inside in storehouse 1 of foaming is connected to by exhaust outlet 12 with outside Pressure release is vented.
It should be noted that as shown in FIG. 7 and 8, the inside in foaming storehouse 1 is confined space, and top, which is provided with, limits it The air bleeding valve 13 of internal pressure, when internal pressure is more than the elastic force on air bleeding valve 13, air bleeding valve 13 is moved upward to exhaust Mouthful, progress pressure release, after pressure release, air bleeding valve 13 moves down, seal foaming storehouse 1, remains to contain inside hair time foaming storehouse and fill The foamed gas of foot, while it is internal with certain pressure, is conducive to the foaming of molten aluminum, while ensuring that the foaming of molten aluminum is abundant Property.
In the present invention, it is to be understood that:Term "center", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness Degree ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " clockwise ", The orientation or position relationship of instructions such as " counterclockwise " are to be based on the orientation or positional relationship shown in the drawings, and are merely for convenience of retouching It states the present invention and simplifies description, do not indicate or imply the indicated equipment or specific orientation that element must have, Yi Te Fixed azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite important Property or implicitly indicate the quantity of indicated technical characteristic.Therefore, define " first ", the feature of " second " can be expressed or Person implicitly includes one or more this feature.In description of the invention, the meaning of " plurality " is two or two with On, unless otherwise specifically defined.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, The change or replacement that any one skilled in the art can readily occur under the technical clarification of the present invention, should all contain Lid is within protection scope of the present invention.Therefore, the scope of protection of the invention shall be subject to the scope of protection specified in the patent claim.

Claims (10)

1. a kind of rotary gas foam device, including foaming storehouse (1) and the driving that is fixedly installed on above the foaming storehouse (1) Component (2), which is characterized in that further include:
Molten aluminum efferent duct (3), the molten aluminum efferent duct (3) are vertically rotatably dispose in the top of foaming storehouse (1), Inside is hollow setting, and is connected with the inside for foaming storehouse (1) by opening up multiple fluid holes (31) thereon;
Gas output tube (4);The gas output tube (4) seals through the molten aluminum efferent duct (3) and with its axial both ends of the surface It being fixedly connected, one end of the gas output tube (4) is fixedly connected with the driving component (2), and other end is that closing is arranged, Gas spout (41) is offered above the end face;
The internal foamed gas of gas output tube (4) is defeated in molten aluminum through opening up multiple gas compression mouths (42) compression thereon The internal molten aluminum of outlet pipe (3), sprays through fluid hole (31), forms liquid flow line (32), and drive component (2) drives gas output tube (4) it rotates, liquid flow line (32) is wandered and is formed by gas curtain across gas is sprayed by gas spout (41) in the shape of a spiral (43)。
2. a kind of rotary gas foam device according to claim 1, which is characterized in that the fluid hole (31) is located at The inside of foaming storehouse (1).
3. a kind of rotary gas foam device according to claim 1, which is characterized in that the molten aluminum efferent duct (3) Outer circumference surface on be provided with opening down and in the baffle (33) of umbrella shape setting, gas buffer area is formed below the baffle (33) (34)。
4. a kind of rotary gas foam device according to claim 1, which is characterized in that the fluid hole (31) and institute Gas compression mouth (42) is stated to be arranged in a one-to-one correspondence.
5. a kind of rotary gas foam device according to claim 1, which is characterized in that the fluid hole (31) is along institute The outer circumference surface array arrangement of molten aluminum efferent duct (3) is stated, and is vertically provided with multigroup fluid hole (31).
6. a kind of rotary gas foam device according to claim 3, which is characterized in that the baffle (33) is along vertical Direction is between neighbouring two fluid holes (31), and tapered arrangement from top to down.
7. a kind of rotary gas foam device according to claim 3, which is characterized in that molten aluminum is through the fluid hole (31) it sprays and is slid along the baffle (33) face, molten aluminum heavy curtain (331) is formed in the lower section of its outer circumference surface.
8. a kind of rotary gas foam device according to any one of claims 1 to 7, which is characterized in that further include difference Rotary seal cooperation is installed on the first reducing sleeve (5) and the second switching on the molten aluminum efferent duct (3) and gas output tube (4) Cover (6), first reducing sleeve (5) and the second reducing sleeve (6) be located at it is described foam storehouse (1) and molten aluminum efferent duct (3) it is upper Side.
9. a kind of rotary gas foam device according to claim 8, which is characterized in that first reducing sleeve (5) Pass through the first transfer hole (51) and second with the molten aluminum efferent duct (3) and gas output tube (4) respectively with the second reducing sleeve (6) Transfer hole (61) is connected.
10. a kind of rotary gas foam device according to any one of claims 1 to 7, which is characterized in that the foaming storehouse (1) exhaust pipe (11) being connected with inside it is offered at the top of, is offered on the top outer circumference surface of the exhaust pipe (11) Exhaust outlet (12), foamed gas internal in foaming storehouse (1), which pushes, is flexibly set in the air bleeding valve (13) on its top to moving up It moves to exhaust outlet (12) position, the inside of foaming storehouse (1) is connected to pressure release exhaust with outside by exhaust outlet (12).
CN201710583102.4A 2017-07-17 2017-07-17 A kind of rotary gas foam device Active CN107164649B (en)

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Publication number Priority date Publication date Assignee Title
CN110195174B (en) * 2019-05-28 2021-10-15 昆明理工大学 Preparation method of aluminum-lithium intermediate alloy

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JPH01306532A (en) * 1988-06-02 1989-12-11 Agency Of Ind Science & Technol Composite structure of porous metallic material and hollow metallic object and its production
JPH06172887A (en) * 1992-12-08 1994-06-21 Mitsubishi Kasei Corp Production of aluminum alloy
CN102373344B (en) * 2010-08-13 2013-02-27 东北大学 Preparation method and device of metal foam material
CN103966474A (en) * 2014-05-30 2014-08-06 芜湖长启炉业有限公司 Automatic blowing system for foamed molten aluminum
CN104498758B (en) * 2014-12-01 2016-11-23 尚圣杰 Foamed aluminium continuous foamed direct casting formation system

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