CN107774937A

CN107774937A - A kind of improved structure with preheating device dual chamber melting furnace

Info

Publication number: CN107774937A
Application number: CN201610722514.7A
Authority: CN
Inventors: 张宗发
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-08-25
Filing date: 2016-08-25
Publication date: 2018-03-09

Abstract

The invention discloses a kind of improved structure with preheating device dual chamber melting furnace, including stove outer covering, stove inner casing, electric heating layer and charge door, stove inner housing inner is provided with baffle plate, the inner space of stove inner casing is divided into melting chamber and rest chamber by the baffle plate, also include casting case, blast pipe is connected with the outside of the casting case, inside the blast pipe connection exterior space and casting case, connecting tube is provided with the outside of stove outer covering, drainage conduit, air inlet pipe, appendix, delivery pipe, conveying axis are provided with delivery pipe, the conveying axis to exterior space and are connected with drive device through conveying end surfaces, conveying axis are provided with helical blade.The present invention devises fusing cell structure; integration preheating chamber, melting chamber and rest chamber; save fusing time and heat energy; improve production efficiency; it is also provided with rest chamber; protection gas is passed through, workpiece and air contact is all avoided in charging, fusing, standing and casting stage, improves casting quality.

Description

A kind of improved structure with preheating device dual chamber melting furnace

Technical field

The present invention relates to a kind of metallurgical plant, and in particular to a kind of improved structure with preheating device dual chamber melting furnace.

Background technology

Door and window as in people's daily life often in contact with to article, not only play and keep out wind and rain, be heat-insulated, insulating against sound, adopting Light, ventilation etc. act on, but also are the important components of architectural image, and their shape, size, color, moulding etc. are to building Building the moulded of thing has critically important influence.As the improvement of people's living standards, people are more next to the demand of door and window Bigger, the requirement to door and window is also more and more diversified.

Aluminum alloy doors and windows are an important branch of door and window, aluminum alloy doors and windows refer to use aluminum alloy extrusion section bar for frame, The door and window that stile, fan material make.Aluminum alloy doors and windows are because having the characteristics that attractive in appearance, sealing, intensity is high is widely used.Aluminium alloy The section bar and glass style of door and window are divided into glazing bar style and flower glass style, wherein, glazing bar style is based on aluminium is thick, style is sedate Characteristic is wanted, for flower glass style with aluminium various shapes, style vivaciously for main characteristics, style has lattice, ice sculpture, low relief, brilliant shellfish etc..

The first procedure is exactly blanking in the aluminum alloy doors and windows technological process of production, and required aluminium can be obtained by blanking Alloy frame material and fan material, however, no matter the device of blanking has more accurate and high-end, much discarded leftover pieces can be all produced, it is right For a factory, if these discarded leftover pieces, which are directly thrown away, to cause the loss of flood tide, many enterprises all select now Select and try every possible means efficiently to reclaim these discarded leftover pieces so as to reduce the production cost of aluminum alloy doors and windows to reach lifting oneself The purpose of product competitiveness.

The first step of recovery aluminium alloy scrap needs to melt these aluminium alloy scraps, and equipment used is melting furnace, fusing Stove can meet aluminum alloy melting technique well.But traditional melting furnace all uses in preheated metallic and is separately provided preheating Stove is preheated, and the workpiece after preheating is taken out and added into melting furnace again after the completion of preheating, it is necessary to will be molten after the completion of fusing Change the metal liquid in stove and be transferred in the standing furnace additionally set and carry out concise, so not only increase the work of operating personnel Measure, and increase thermal energy consumption so that low production efficiency.In addition, can not in charging, fusing, standing and casting cycle Accomplish preferably to completely cut off air, easily by the dioxygen oxidation in air, contact with the water in air to make molten metal especially aluminium liquid Serious pin hole is produced on the Mechanical processing of casting face that must be formed, the serious quality for reducing casting.

The content of the invention

The technical problems to be solved by the invention are directed to the shortcomings that conventional fused stove, there is provided one kind carries preheating device dual chamber The improved structure of melting furnace, solving conventional fused stove needs extra to set that energy consumption caused by preheating furnace and standing furnace is big, increase behaviour Make person works' amount and conventional fused stove in charging, fusing, standing, casting stage workpiece and the casting caused by air contact Low-quality problem.

The present invention is achieved through the following technical solutions：A kind of improved structure with preheating device dual chamber melting furnace, including Stove outer covering and charge door, the stove outer covering inner side are provided with stove inner casing, electric heating layer, stove are provided between stove outer covering and stove inner casing Inner housing inner is provided with baffle plate, and the inner space of stove inner casing is divided into two parts by the baffle plate, and wherein top is divided into melting chamber, under Part be rest chamber, in addition to casting case, is connected with blast pipe on the outside of the casting case, the blast pipe connection exterior space with Connecting tube, drainage conduit, air inlet pipe, appendix and delivery pipe are provided with inside casting case, on the outside of stove outer covering, wherein, the company Adapter connection melting chamber and rest chamber, the drainage conduit connection casting case and rest chamber, the air inlet pipe connection exterior space, melt Change room and rest chamber, the appendix connection rest chamber and casting case, the delivery pipe run through stove outer covering side into melting chamber, Delivery pipe one end connects with melting chamber, the end face closing of the other end, and connection charge door in top on the outside of delivery pipe, the charge door connects Inside logical exterior space and delivery pipe, conveying axis are provided with delivery pipe, the conveying axis are through conveying end surfaces to outside sky Between and be connected with drive device, conveying axis are provided with helical blade.Prior art in order to solve workpiece to be melted preheating and Concise problem after the completion of fusing, general special setting preheating furnace and standing furnace, preheating furnace and standing furnace are required for individually heating, The energy is wasted, and, because workpiece is metal, can be dissipated from preheating furnace by after preheated workpiece taking-up with faster speed Heat, conventional method need operating personnel to take out workpiece from preheating furnace and put the workpiece in melting furnace, and by melting chamber Molten metal is transferred in rest chamber, is added the workload of operating personnel, is added the process time；On the other hand, producing Cheng Zhong, the problem of serious in fusing metal especially aluminium alloy be present, i.e. aluminium liquid can absorb hydrogen, cause on Mechanical processing of casting face Pin hole is produced so as to reduce the quality of product, the hydrogen main source in aluminium liquid is the reaction of aluminium liquid and steam, although in production Any instrument used can all dry, but be still moist for aluminium liquid, it is adsorbed hydrogen；Present in air Oxygen can make metal liquid oxidation, be unfavorable for the fusing of metal, so as to get casting quality it is poor.In summary, if it is possible to make gold Ingress of air will improve the quality of casting to category in preheating, fusing, standing and casting cycle, it is not necessary to additionally set standing furnace The production efficiency of melting furnace will be improved.During using the present apparatus, first by air inlet pipe connective protection gas cylinder, blast pipe connection vacuum Pump, connecting tube and appendix are opened, then melting chamber and standing chamber inner space are replaced using protection gas, displacement is completed Afterwards, close connecting tube, blast pipe is connected air or is passed through in observation oil seen whether bubble generation, keep melting chamber and The circulation of protection gas, is then turned on electric heating layer in rest chamber, by the temperature monitoring that is arranged in melting chamber by melting chamber Temperature control at 200 to 300 °, close blast pipe afterwards, further open air inlet pipe angle valve, increase protection gas intake, Charge door is opened, at this moment gas is discharged from charge door, opens the drive device connected in delivery pipe, the output end band of drive device Dynamic conveying axis rotation, so as to drive helical blade to rotate, then pours into workpiece to be melted into delivery pipe from charge door, fusion The workpiece of change is gradually delivered in melting chamber in delivery pipe by helical blade, because melting chamber has temperature, so delivery pipe In also there is certain temperature, the vapor for evaporating workpiece surface to be melted from the protective gas that workpiece surface to be melted flows through Taken out of from charge door, workpiece to be melted is after the vapor on surface is got rid of as helical blade is heated while entering In melting chamber, during whole charging, protection gas not only acts as the effect of isolation air, also makes the preheating of workpiece to be melted more Add fully and taken away the vapor of workpiece surface.After division of labor part in accumulation portion in melting chamber, continue to heat the temperature of melting chamber Degree is to 600 to 700 °, after the completion of charging, closes charging lid, opens blast pipe, at this moment protect gas to enter melting chamber from air inlet pipe In rest chamber, by efferent duct enter in casting case and be finally passed through from blast pipe air or from it is oily in, melted After the workpiece of part, connecting tube is opened, molten metal is passed through into rest chamber, due to there is protection gas to be passed through in rest chamber, protect gas The hydrogen being adsorbed in molten metal is taken out of, after molten metal discharges hydrogen in rest chamber, opens drainage conduit, molten metal passes through row Entered in expects pipe in casting case and complete casting.Compared with conventional fused stove, rest chamber and melting chamber are set together, not only Heat energy is saved, the workload of operating personnel is also reduced, saves the process time；By fed in workpiece, melt, stand and The casting stage is all passed through protection gas, workpiece and molten metal is avoided and is contacted with the oxygen in air and vapor, improves casting Part quality.

Further, one end that the connecting tube is located inside melting chamber is provided with filter screen, and the drainage conduit is positioned at standing One end of chamber interior is provided with filter screen.The workpiece that setting filter screen can prevent from not being completely melt blocks connecting tube and drainage conduit, leads Cause can not continuously cast molding.

Further, the output end of the drive device uses resistant to elevated temperatures with the part and the connecting tube for conveying axis connection Heat-insulating material.It is higher to melt indoor temperature, if conveying axis use metal material entirely, can transfer heat to drive device causes driving to fill Put and receive damage, so the output end of drive device and the part that links of conveying axis are filled using resistant to elevated temperatures heat-insulating material to driving Put and protected, connecting tube is to ensure that aluminium liquid will not be because of outer when being flowed out from melting chamber using the purpose of high-temperature resistant thermal insulating material The low temperature in boundary space and cause heat to scatter and disappear.

Further, threeway is set in the air inlet pipe, is provided with pressure gauge in air inlet pipe, air inlet pipe is inside rest chamber One end close to rest chamber bottom.Set threeway operating personnel can be made preferably to control protection gas, for example, displacement the stage, Threeway, which can be adjusted, makes air inlet pipe only connect exterior space and melting chamber, protection gas is entered melting chamber from air inlet pipe, then pass through Connecting tube enters rest chamber, is finally discharged from blast pipe, makes displacement more thorough, sets pressure gauge operating personnel can be allowed to know Pressure in melting chamber, aspect operating personnel displacement, the mesh by the one end of air inlet pipe inside rest chamber close to rest chamber bottom In can will protection gas be passed directly in molten metal, reach preferably remove molten metal in hydrogen purpose.

Further, cooling device is installed on the outside of the appendix.After the completion of charging, protection gas enters molten from air inlet pipe Change in room, because temperature is very high in melting chamber, also possess higher temperature after protecting aspiration heat, then enter by appendix When in casting case, set on the outside of appendix cooling device can to enter in casting case to protect gas not have too high Temperature and cause extend casting molding time.Cooling device uses the structure of condenser pipe, and appendix periphery is provided with encirclement The pipeline of appendix, it is passed through in the duct and discharges cooling water so that being so incensed that cooling by the high temperature protection of appendix, so as to So that casting molding time shortens.

Further, the edge of the helical blade and the inwall of delivery pipe have gap, and gap is less than the leaf of helical blade Radius surface.The edge of helical blade and the inwall of delivery pipe must have gap, otherwise the edge of helical blade and delivery pipe Inner side can all be worn, and higher live load can be caused to drive device, but gap can not be too big, and otherwise helical blade is not There is the function of promoting workpiece to be melted to enter melting chamber again.

Further, drive device is provided with above the stove outer covering, the output end of the drive device is connected with rotation Axle, for the rotary shaft through stove outer covering into rest chamber, part of the rotary shaft above baffle plate is connected with the first agitating paddle, rotates Axle bottom is connected with the second agitating paddle.Workpiece can more quickly be melted by stirring, improve the operating efficiency of melting chamber, it is quiet Put the hydrogen that the agitating paddle in room can be such that protection gas more easily takes out of in molten metal.

Further, the length of first agitating paddle is 3/4ths of fusing chamber radius.Found by production practices, When the length of agitating paddle is melts 3/4ths of chamber radius, the operating efficiency highest of melting chamber, that is, the driving of rotary shaft is connected Device can carry out most uniform stirring with the live load of minimum to the workpiece in melting chamber.

Further, the length of second agitating paddle is 3/4ths of the first paddle length.Pass through production practices It was found that when the length of the second agitating paddle is 3/4ths of the first paddle length, the mixing effect in rest chamber is optimal, because Rest chamber and stirring that need not be very violent, its purpose is primarily to discharge the hydrogen in molten metal.

Further, the output end of the drive device and the part for rotating axis connection are resistant to elevated temperatures heat-insulating material.This The purpose that sample is set is to protect the drive device of connection rotary shaft, it is not produced because of the temperature that rotary shaft is conducted Damage.

The present invention compared with prior art, has the following advantages and advantages：

1st, the present invention changes feeding manner, traditional feed pipe is possessed the function of preheating workpiece to be melted, Reduce the work load of operating personnel, save fusing time, saved heat energy, improve production efficiency；

2nd, the present invention prevents casting from, with air contact, entering in fusing and casting cycle by setting protection gas and casting case Fusing and casting stage all prevent casting because of oxidation and contact with vapor caused by casting quality it is low the problem of；

3rd, the present invention is provided with cooling device around appendix, and the protection air-flow after cooling has cooling to imitate when crossing molten metal surface Fruit, shorten the cast molding time；

4th, the present invention, not only by protecting gas to take the hydrogen adsorbed in molten metal out of, also saves energy by setting rest chamber Source and the workload of operating personnel, improve production efficiency；

5th, the present invention is had found when the length of agitating paddle is melts 3/4ths of chamber radius, drive device by production practices More preferable stirring can be reached with less live load, further improve the operating efficiency of melting chamber.

Brief description of the drawings

Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：

Fig. 1 is the structural representation of semi-section of the present invention.

Mark and corresponding parts title in accompanying drawing：

1- stove outer coverings, 2- stove inner casings, 3- electric heating layers, 4- connecting tubes, 5- rotary shafts, 6- delivery pipes, 7- conveying axis, 8- spirals Blade, 9- charge doors, 10- blast pipes, 11- drainage conduits, 12- appendixs, 13- air inlet pipe.

Embodiment

For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and accompanying drawing, to this Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make For limitation of the invention.

Embodiment

As shown in figure 1, the present invention is a kind of improved structure with preheating device dual chamber melting furnace, including the He of stove outer covering 1 Charge door 6, the inner side of stove outer covering 1 are provided with stove inner casing 2, it is characterised in that are provided with electricity between stove outer covering 1 and stove inner casing 2 Zone of heating 3, stove inner casing 2 are internally provided with baffle plate, and the inner space of stove inner casing 2 is divided into two parts by the baffle plate, its middle and upper part It is divided into melting chamber, bottom is divided into rest chamber, in addition to casting case, blast pipe 10, the exhaust are connected with the outside of the casting case Pipe 10 is connected inside exterior space and casting case, and the outside of stove outer covering 1 is provided with connecting tube 4, drainage conduit 11, air inlet pipe 13, defeated Tracheae 12 and delivery pipe 6, wherein, the connecting tube 4 connects melting chamber and rest chamber, and the drainage conduit 11 connects casting case and quiet Room is put, the air inlet pipe 13 connects exterior space, melting chamber and rest chamber, and the appendix 12 connects rest chamber and casting case, Through the side of stove outer covering 1 into melting chamber, the one end of delivery pipe 6 connects the delivery pipe 6 with melting chamber, the end face envelope of the other end Close, the outside of delivery pipe 6 top connection charge door 9, the charge door 9 is connected inside exterior space and delivery pipe 6, in delivery pipe 6 Conveying axis 7 are provided with, the conveying axis 7 to exterior space and are connected with drive device through the end face of delivery pipe 6, around conveying axis 7 are provided with helical blade 8.Further, one end that the connecting tube 4 is located inside melting chamber is provided with filter screen, the discharge One end that pipe 9 is located inside rest chamber is provided with filter screen.Further, the output end of the drive device is connected with conveying axis 7 Part and the connecting tube 4 use resistant to elevated temperatures heat-insulating material.Further, threeway, air inlet are set in the air inlet pipe 7 Pressure gauge is provided with pipe 7, the one end of air inlet pipe 7 inside rest chamber is close to rest chamber bottom.Further, the appendix 8 outsides are provided with cooling device.Further, the edge of the helical blade 8 and the inwall of delivery pipe 6 have a gap, and gap is small In the blade face radius of helical blade 8.Further, the top of the stove outer covering 1 is provided with drive device, the drive device it is defeated Go out end and be connected with rotary shaft 5, through stove outer covering 1 into rest chamber, part of the rotary shaft 5 above baffle plate connects the rotary shaft 5 The first agitating paddle is connected to, the bottom of rotary shaft 5 is connected with the second agitating paddle.Further, the length of first agitating paddle is molten Change 3/4ths of chamber radius.Further, the length of second agitating paddle is 3/4ths of the first paddle length.Enter One step, the part that the output end of the drive device is connected with rotary shaft 5 is resistant to elevated temperatures heat-insulating material.Use the present apparatus When, first by the air in nitrogen displacement melting chamber and rest chamber, electric heating layer 3 is opened, by being arranged in melting chamber The temperature of melting chamber is risen to 200 to 300 ° by temperature monitoring, is then turned on the motor connected in delivery pipe 6, the output of motor End drives helical blade 8 to rotate by conveying axis 7, then increases the air inflow of nitrogen, closes on blast pipe 10 and appendix 8 Angle valve, open charge door 9 so that gas is discharged from charge door 9, and workpiece to be melted is poured into delivery pipe 6 from charge door 9, Workpiece to be melted is gradually delivered in melting chamber in delivery pipe 6 by helical blade 7, and workpiece to be melted is in delivery pipe 6 Fall into melting chamber after being gradually heated, after accumulation portion lease making crosses the workpiece of preheating in melting chamber, open on stove outer covering 1 The motor of side, motor drive the first agitating paddle and the second agitating paddle to start to stir by rotary shaft 5, continue to heat melting chamber afterwards Temperature to 600 to 700 °, after charging, close charge door 9, open the angle valve on blast pipe 10 and appendix 12, make nitrogen Gas is entered in casting case after air inlet pipe 13 enters melting chamber and rest chamber, then by appendix 12, eventually through blast pipe 10 enter in air or observation oil, reduce the intake of nitrogen, keep nitrogen to be circulated in melting chamber and rest chamber, this When melting chamber bottom accumulation workpiece with stirring gradually fusing, after melting a part of workpiece, open connecting tube 4, molten metal enters Entering in rest chamber and stirred by the second agitating paddle, nitrogen is entered in the molten metal in rest chamber by air inlet pipe, and by molten metal In hydrogen taken out of from blast pipe 10, after molten metal stirs one end time in rest chamber, open drainage conduit 11 be pointed to casting Die casting in case, while the condenser pipe for opening the outside of appendix 12 cools to the nitrogen by appendix 12, finally Casting is melted in the environment of air is completely cut off and cast molding.

Above-described embodiment, the purpose of the present invention, technical scheme and beneficial effect are carried out further Describe in detail, should be understood that the embodiment that the foregoing is only the present invention, be not intended to limit the present invention Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution and improvements done etc., all should include Within protection scope of the present invention.

Claims

1. a kind of improved structure with preheating device dual chamber melting furnace, including stove outer covering（1）And charge door（6）, outside the stove Shell（1）Inner side is provided with stove inner casing（2）, it is characterised in that stove outer covering（1）With stove inner casing（2）Between be provided with electric heating layer （3）, stove inner casing（2）It is internally provided with baffle plate, the baffle plate is by stove inner casing（2）Inner space be divided into two parts, its middle and upper part It is divided into melting chamber, bottom is divided into rest chamber, in addition to casting case, blast pipe is connected with the outside of the casting case（10）, the row Tracheae（10）Connect inside exterior space and casting case, stove outer covering（1）Outside be provided with connecting tube（4）, drainage conduit（11）, enter Tracheae（13）, appendix（12）And delivery pipe（6）, wherein, the connecting tube（4）Connect melting chamber and rest chamber, the discharge Pipe（11）Connect casting case and rest chamber, the air inlet pipe（13）Connect exterior space, melting chamber and rest chamber, the appendix （12）Connect rest chamber and casting case, the delivery pipe（6）Through stove outer covering（1）Side is into melting chamber, delivery pipe（6）One end Connected with melting chamber, the end face closing of the other end, delivery pipe（6）Connection charge door above outside（9）, the charge door（9）Even Logical exterior space and delivery pipe（6）Inside, delivery pipe（6）Inside it is provided with conveying axis（7）, the conveying axis（7）Through delivery pipe （6）End face is to exterior space and is connected with drive device, around conveying axis（7）It is provided with helical blade（8）.

2. a kind of improved structure with preheating device dual chamber melting furnace according to claim 1, it is characterised in that described Connecting tube（4）One end inside melting chamber is provided with filter screen, the drainage conduit（9）One end inside rest chamber is set There is filter screen.

3. a kind of improved structure with preheating device dual chamber melting furnace according to claim 1, it is characterised in that described The output end and conveying axis of drive device（7）The part of connection and the connecting tube（4）Using resistant to elevated temperatures heat-insulating material.

4. a kind of improved structure with preheating device dual chamber melting furnace according to claim 1, it is characterised in that described Air inlet pipe（7）Interior setting threeway, air inlet pipe（7）On be provided with pressure gauge, air inlet pipe（7）One end inside rest chamber is close to quiet Put room bottom.

5. a kind of improved structure with preheating device dual chamber melting furnace according to claim 1, it is characterised in that described Appendix（8）Outside is provided with cooling device.

A kind of 6. modified melting furnace with preheating device according to claim 1, it is characterised in that the helical-blade Piece（8）Edge and delivery pipe（6）Inwall have gap, gap is less than helical blade（8）Blade face radius.

7. a kind of improved structure with preheating device dual chamber melting furnace according to claim 1, it is characterised in that described Stove outer covering（1）Top is provided with drive device, and the output end of the drive device is connected with rotary shaft（5）, the rotary shaft（5） Through stove outer covering（1）Into rest chamber, rotary shaft（5）Part above baffle plate is connected with the first agitating paddle, rotary shaft（5）Bottom End is connected with the second agitating paddle.

8. a kind of improved structure with preheating device dual chamber melting furnace according to claim 7, it is characterised in that described The length of first agitating paddle is 3/4ths of fusing chamber radius.

9. a kind of improved structure with preheating device dual chamber melting furnace according to claim 7, it is characterised in that described The length of second agitating paddle is 3/4ths of the first paddle length.

A kind of 10. improved structure with preheating device dual chamber melting furnace according to claim 7, it is characterised in that institute State the output end and rotary shaft of drive device（5）The part of connection is resistant to elevated temperatures heat-insulating material.