CN104764326A - Environmental-protection and energy-saving production system of nonferrous metal casting melt - Google Patents

Environmental-protection and energy-saving production system of nonferrous metal casting melt Download PDF

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Publication number
CN104764326A
CN104764326A CN201510124835.2A CN201510124835A CN104764326A CN 104764326 A CN104764326 A CN 104764326A CN 201510124835 A CN201510124835 A CN 201510124835A CN 104764326 A CN104764326 A CN 104764326A
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cylinder
preheating
waste heat
saving
tablet
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CN201510124835.2A
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Chinese (zh)
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CN104764326B (en
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卢坤
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卢坤
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Abstract

The invention provides an environmental-protection and energy-saving production system of a nonferrous metal casting melt. The system comprises a melting furnace on which a feeding well and a waste heat exhaust hole are formed; the system further comprises a feeding mechanism and a preheating device, wherein the preheating device is used for heating a nonferrous metal tablet; the preheating device comprises a preheating cavity, a feeding hole and a discharge hole, wherein the feeding mechanism is connected with the feeding hole, a feeding well is connected with a discharge hole, and the waste heat exhaust hole is communicated with the preheating cavity through flue gas. According to the environmental-protection and energy-saving production system provided by the invention, the table is preheated by the preheating device before the melting of the melting furnace, the temperature difference between the tablet and the melting furnace can be reduced, the explosion can be prevented after the cooled table enters the melting furnace, the melting efficiency can be improved, and the burning and heating time of the melting furnace can be reduced; furthermore, the tablet is preheated by the fuel gas of the melting furnace, therefore the waste heat can be fully used, the energy loss can be reduced, the energy consumption can be reduced, and the recycling of energy can be realized; in addition, the system processes can be simplified, the traditional twice melting can be changed into once melting, and the production cycle can be shortened.

Description

A kind of environmental protection of non-ferrous metals casting melt, production energy-saving system
Technical field
The present invention relates to the technical field of smelting of casting melt, particularly a kind of environmental protection of non-ferrous metals casting melt, production energy-saving system.
Background technology
Casting is poured in casting mold by the metal liquid by melting, obtains the manufacturing process of the part of required form and performance through cooled and solidified.Casting is conventional manufacture method, low cost of manufacture, and technological flexibility is large, can obtain complicated shape and large-scale foundry goods, occupy very large proportion, had by ingot metal in machine-building: copper, iron, aluminium, tin, lead etc.
By ingot metal before formation foundry goods, all will make metal liquid by melting or be called melt, the production process that current China casting industry obtains metal bath be as follows: 1, prepare raw material, comprises simple metal, the metal of recovery and other metal etc.; 2, raw material remelting is become molten metal by melting factory; 3, melting factory asks configuration composition and ingot casting, according to type with model entitling board according to client; 4, ingot is transported to foundry enterprise, ingot is fused into molten metal by foundry enterprise again; 5, last foundry enterprise casting is pressed into foundry goods.Wherein, what waste that energy resource consumption is the highest, pollution is the most serious, materials and parts are demoted was the most outstanding is exactly middle this link of melting factory.Particularly in China, because industry development is immature, production technology falls behind, and equipment is original, and melting factory becomes the principal contradiction of national energy-saving emission reduction work especially.Not only process is complicated for this traditional smelting technology, the production cycle is long, and become liquation and foundry enterprise that ingot is fused into liquation two links again in the remelting of melting factory, all want a large amount of construction factory building, equipment, not only increase Productive statistics, also to consume a large amount of energy, cause the waste of the energy.In a word, because the backwardness of production equipment, facility does not cause traditional melting link energy-conservation, not environmentally; And the secondary fusion of traditional mode of production pattern produces secondary scaling loss and energy resource consumption, exacerbate energy consumption, discharge and pollution.
Meanwhile, in traditional smelting technology, the metal materials and parts be broken are all directly join in smelting furnace, because smelting furnace temperature is higher, the materials and parts of normal temperature join in the smelting furnace of high temperature, and materials and parts are heated to molten state from normal temperature will consume a large amount of heats, and the heat time is longer; The instantaneous rising of materials and parts temperature, easily produces blast, and scaling loss is comparatively large, affects liquation quality; And the burnt gas that smelting furnace burning produces directly is discharged, the utilization that waste heat does not obtain, simultaneously also contaminated environment.These all cause serious hidden danger to product quality, energy-conserving and environment-protective.
China is machine-building big country, and is cast in machine-building and occupies very large proportion, and as lathe accounts for 60 ~ 80%, automobile accounts for 25%, and tractor accounts for 50 ~ 60%.And traditional foundry enterprise is the ingot obtaining the required composition of casting or kind from the melting factory of upstream mostly, cause the melting factory of intermediate link more, therefore the energy that consumes of melting ingot casting enterprise is larger, and the key index such as comprehensive energy consumption, pollutant emission, resource recycling rate produced of China smelting metal and developed country's gap are obviously, bring very big environmental pollution hidden danger.
Summary of the invention
The deficiencies in the prior art in view of the above, the object of invention is the environmental protection, the production energy-saving system that provide a kind of non-ferrous metals casting melt, can improve liquation production efficiency, improves smelting furnace energy utilization rate, simplifies production process.
As preferably: for achieving the above object and other relevant objects, the invention provides, a kind of environmental protection of non-ferrous metals casting melt, production energy-saving system, comprise smelting furnace, described smelting furnace is provided with feed intake well and waste heat exhaust outlet, also comprise batch charging mechanism and the preheating device for heating non-ferrous metal tablet, this preheating device comprises preheating chamber, charging aperture and discharging opening, described batch charging mechanism is connected with charging aperture, the described well that feeds intake is connected with discharging opening, and described waste heat exhaust outlet is by flue and preheating chamber.
Adopt said structure, preheating device was set before smelting furnace melting preheating is carried out to tablet, the tablet temperature entering smelting furnace is enable to reach 300 ° to 400 °, reduce the temperature difference with smelting furnace, blast after preventing the tablet cooled from entering smelting furnace, the efficiency of melting can be improved simultaneously, reduce the combustion heating time of smelting furnace; Owing to adopting the flue gas of smelting furnace to carry out preheating to tablet, the waste heat that smelting furnace is vented is fully used, and reduces energy loss, reduces energy consumption, realizes recycling of the energy.Meanwhile, this system operation is simplified, and changes traditional to be molten into melting once twice, and shorten the production cycle, smelting furnace liquation out can be transported out for subsequent use according to demand; This system footprint area is little, can adapt to the demand of various enterprise.
Because this system directly can be applied in foundry enterprise, reaching can in the object of melt needed for the direct melting of casting factory, and foundry enterprise can directly process melting non-ferrous metal, thus eliminates traditional middle melting enterprise; Save the link of melting once scaling loss and ingot casting transport, change the production model of traditional liquation, the melting of liquation only needs once to melt, the production link of the melting factory of abandoning tradition; Fundamentally reduce by a fusion process, also just decrease discharge and energy consumption, more energy-saving and environmental protection from source.
As preferably: described preheating device is provided with waste heat air inlet near one end of discharging opening, described flue two ends are connected with waste heat exhaust outlet and waste heat air inlet respectively, described preheating device is provided with exhaust opening near one end of charging aperture, and this exhaust opening is connected with dust arrester by pipeline.
Said structure, the waste heat gas of smelting furnace moves from discharging opening to charging aperture direction, thus with tablet move toward one another, what hot gas can be made to contact with tablet is more abundant, and heat exchange effect is good, and the gas after contacting with tablet enters after dust arrester carries out dedusting through exhaust opening, enter in air, emissions reduction, reduces the pollution to air, accomplishes that environmental protection is produced.
As preferably: described preheating device comprises the driving mechanism that at least one cylinder and head roll rotate, described charging aperture and exhaust opening are positioned at the first end of cylinder, described waste heat air inlet and discharging opening are positioned at the second end of cylinder, described inner wall of rotary drum surface thereof is provided with multiple material scraping plate, when drive unit head roll rotates, described tablet moves to discharging opening direction under material scraping plate effect.
By the rotation of cylinder, tablet is swept in curtain shape by material scraping plate in cylinder, and moved by the direction of charging aperture to discharging opening, make fully to contact with hot gas with tablet, pre-heat effect is good.
As preferably: described cylinder comprises the coaxial interior cylinder that arranges and outer cylinder, the length of interior cylinder is less than the length of described outer cylinder, fixed by support between interior cylinder and outer cylinder, described inner wall of inner drum surface thereof is provided with multiple first material scraping plate, outer inner wall of rotary drum surface thereof is provided with multiple second material scraping plate, and the incline direction of described second material scraping plate and the first material scraping plate is contrary.
Said structure, because the direction of outer cylinder second material scraping plate is contrary with the first material scraping plate incline direction, and interior cylinder and outer cylinder synchronous axial system, therefore tablet is entered by interior cylinder, after feed end is sent to discharge end and carries out heat exchange, fall into outer cylinder one end near discharging opening, then by outer cylinder, tablet is sent to feed end, by arranging the mechanisms such as guide plate, tablet is entered in interior cylinder again, thus make tablet continue the preheating at interior cylinder and the motion of outer cylinder Inner eycle.The setting of two-layer cylinder structure, when smelting furnace does not need to add tablet, tablet can be made to move back and forth in interior cylinder and outer cylinder, ensure the temperature of tablet, when needs are reinforced, open discharging opening and add, is main heat exchanger channels in cylinder because hot gas enters in after cylinder, therefore tablet is preferably entered by interior cylinder, and certain tablet also can be entered by the space between outer cylinder and interior cylinder.
As preferably: described driving mechanism and cylinder are installed on supporting seat, described cylinder feed end and discharge end are covered with the first end cap and the second end cap respectively, first end cap and the second end cap are fixedly installed on supporting seat, and by the sealing of described cylinder two ends, described waste heat air inlet is opened in the second end cap central authorities, described discharging opening is positioned on the second end cap below waste heat air inlet, this discharging opening be provided with for splicing and close the door panel structure of discharging opening, described discharging opening and feed intake between well and be provided with weighing hopper.
Door panel structure is closed when normality, and when needs feed intake to smelting furnace, rotary door plate structure, the tablet in cylinder is slipped into by door panel structure in the pipeline fed intake, and is undertaken quantitatively accurately feeding intake by weighing hopper.Thus can according to the depth of smelting furnace inner melt, adjustment reinforced number, prevent tablet from too much impacting the equipment such as the circulating pump in smelting furnace; Such as can add a small amount of tablet when liquation is more shallow, some tablets can be added when liquation is darker, realize accurately controlling.
As preferably: described exhaust opening and charging aperture are located at first end and cover, and the chute of described batch charging mechanism stretches in interior cylinder or between interior cylinder and outer cylinder from charging aperture; Angle between described first material scraping plate and interior centre of the drum line is 3 ° ~ 5 °, and the angle between described second material scraping plate and outer centre of the drum line is-3 ° ~-5 °.
As preferably: described door panel structure comprises door-plate, cross bar and two cylinders, described cross bar is horizontally set on the discharge end of cylinder, described door-plate is fixed on cross bar, cylinder both sides are stretched out at the two ends of described cross bar, and be fixedly connected with pivoted arm respectively, two described cylinders are vertically arranged on the both sides of cylinder discharge end, cylinder lower end and supporting seat hinged, cylinder upper end and described pivoted arm hinged.
By the lifting of cylinder rod, adjustment cross bar and the upset of door-plate, thus switches in discharging and between closing the door, can by controlling the speed etc. of the Angle ambiguity discharging that door-plate overturns.
As preferably: below described door-plate, correspondence is provided with dump skip, be connected with elephant trunk below dump skip, elephant trunk extends downward the aboveground side that feeds intake, and described weighing hopper is arranged in the middle part of elephant trunk or bottom, also be provided with turnover panel bottom weighing hopper, this turnover panel is overturn by the second air cylinder driven be arranged on elephant trunk.
Fall buffering by the elephant trunk that is obliquely installed to tablet, the upset of the second air cylinder driven turnover panel is carried out metering and is closed and discharging.
As preferably: also comprise crushing mechanism and holding furnace, the tablet after crushing mechanism process is delivered to batch charging mechanism by connecting gear, and described holding furnace is connected with described smelting furnace by fluid groove, and the liquid outlet of this holding furnace is also provided with liquation meter.
Aluminium scrap is shredded the size to certain specification by crushing mechanism, is resent to batch charging mechanism and feeds intake, and is stored after liquation finished product by holding furnace, and liquation meter is to the liquation accurate measurement of transporting out.
As preferably: described smelting furnace comprises body of heater and partition wall, body of heater is divided into combustion chamber and feed compartment by described partition wall, circulating pump is provided with in feed compartment, the described well location that feeds intake is above the eddy current of feed compartment, described partition wall is provided with two liquation openings, two liquation openings lay respectively at the upstream and downstream of eddy current, and described waste heat exhaust outlet is arranged on top of combustion chamber.
Said structure, feeding intake, downhole forms whirlpool, after tablet is cast, drawn in bottom by eddy current, reduce scaling loss, prevent tablet from causing larger scaling loss at molten surface, stir liquation by circulating pump, make liquation homogeneous heating, the element in liquation mixes, and improves liquation quality.
As mentioned above, the beneficial effect of the invention is: before smelting furnace melting, 1, arrange preheating device carry out preheating to tablet, reduce the temperature difference of tablet and smelting furnace, blast after preventing the tablet cooled from entering smelting furnace, the efficiency of melting can be improved simultaneously, reduce the combustion heating time of smelting furnace.2, owing to adopting the flue gas of smelting furnace to carry out preheating to tablet, the waste heat that smelting furnace is vented is fully used, and reduces energy loss, reduces energy consumption, realizes recycling of the energy.3, simultaneously, this system operation is simplified, and changes traditional to be molten into melting once twice, and shorten the production cycle, smelting furnace liquation out can be transported out for subsequent use according to demand; This system footprint area is little, can adapt to the demand of various enterprise.4, the direction of the second material scraping plate is contrary with the first material scraping plate incline direction, and interior cylinder and outer cylinder synchronous axial system, therefore after tablet enters cylinder, the preheating at interior cylinder and the motion of outer cylinder Inner eycle can be continued, when smelting furnace does not need to add tablet, tablet can be made to move back and forth in interior cylinder and outer cylinder, ensure the temperature of tablet.5, undertaken quantitatively accurately feeding intake by weighing hopper, thus can according to the depth of smelting furnace inner melt, adjustment reinforced number, prevent tablet from too much impacting the equipment such as the circulating pump in smelting furnace.6, stored by holding furnace after liquation finished product, liquation meter is to the liquation accurate measurement of transporting out.
Accompanying drawing explanation
Fig. 1 is the horizontal layout schematic diagram of the embodiment of the present invention;
Fig. 2 is the mounting structure schematic diagram of the embodiment of the present invention;
Fig. 3 is the schematic diagram of side direction in Fig. 2 of the present invention;
Fig. 4 is the structural representation of preheating device in the embodiment of the present invention;
Fig. 5 is the schematic diagram that in the embodiment of the present invention, door panel structure coordinates with cylinder;
Fig. 6 is the structural representation of embodiment of the present invention intermediate roll;
Fig. 7 is the structural representation of smelting furnace in the embodiment of the present invention;
Fig. 8 is the A direction view in Fig. 7.
Piece mark explanation
1 crushing mechanism
2 connecting gears
21 hoisting mechanisms
3 batch charging mechanisms
31 chutes
4 dust arresters
5 preheating devices
Cylinder in 51
52 outer cylinders
53 first material scraping plates
54 second material scraping plates
55 second end caps
56 first end caps
571 motors
572 tugboats
573 bandlets
581 door-plates
582 pivoted arms
583 cross bars
584 cylinders
591 waste heat air inlets
592 discharging openings
6 smelting furnaces
61 combustion chambers
62 feed compartments
63 circulating pumps
64 feed intake well
65 waste heat exhaust outlets
66 liquation openings
67 high liquid outlets
68 low liquid outlets
7 holding furnaces
8 liquation meters
91 fluid grooves
92 flues
93 elephant trunks
94 weighing hoppers
95 second cylinders
96 turnover panels
97 dump skips
10 bracing frames
11 supporting seats
Detailed description of the invention
By particular specific embodiment, working of an invention mode is described below, person skilled in the art scholar the content disclosed by this description can understand other advantages and effect of invention easily.
As shown in Figure 1 to Figure 3, the invention provides a kind of environmental protection of non-ferrous metals casting melt, production energy-saving system, comprise smelting furnace 6, crushing mechanism 1, batch charging mechanism 3 and the preheating device 5 for heating non-ferrous metal material block, preheating device 5 comprises preheating chamber, charging aperture and discharging opening 592, the tablet shredded through crushing mechanism 1 is delivered to batch charging mechanism 3 by connecting gear 2, batch charging mechanism 3 is connected with the charging aperture of preheating device 5 by chute 31 grade, smelting furnace 6 is provided with feed intake well 64 and waste heat exhaust outlet 65, feed intake between well 64 with discharging opening 592 and be connected by pipeline etc., waste heat exhaust outlet 65 is by flue 92 and preheating chamber, preheating device 5 is provided with waste heat air inlet 591 near one end of discharging opening 592, flue 92 two ends are connected with waste heat exhaust outlet 65 and waste heat air inlet 591 respectively, preheating device 5 is provided with exhaust opening near one end of charging aperture, this exhaust opening is connected with dust arrester 4 by pipeline.
As shown in Figure 7 and Figure 8, smelting furnace 6 comprises body of heater and partition wall, body of heater is divided into combustion chamber 61 and feed compartment 62 by partition wall, circulating pump 63 is provided with in feed compartment 62, the well 64 that feeds intake is positioned at above the eddy current of feed compartment 62, partition wall is provided with two liquation openings 66, two liquation openings 66 lay respectively at the upstream and downstream of eddy current, waste heat exhaust outlet 65 is arranged on top, combustion chamber 61, combustion chamber 61 is also provided with height two liquid outlets, high liquid outlet 67 is for releasing liquation, to ensure under usual production status that liquation height is at low liquid outlet more than 68, liquation is circulated, liquation is released completely by low liquid outlet 68 when dead halt, holding furnace 7 is connected with smelting furnace 6 by fluid groove 91, the liquid outlet of this holding furnace 7 is also provided with liquation meter 8.
As shown in Figures 4 to 6, preheating device 5 comprises the driving mechanism of at least one cylinder and head roll rotation, driving mechanism is 4 motors 571 be arranged on supporting seat 11, motor 571 is connected with tugboat 572, tugboat 572 coordinates head roll to rotate with the bandlet 573 that cylinder outer wall is arranged, charging aperture and exhaust opening are positioned at the first end of cylinder, waste heat air inlet 591 and discharging opening 592 are positioned at the second end of cylinder, inner wall of rotary drum surface thereof is provided with multiple material scraping plate, when drive unit head roll rotates, tablet moves to discharging opening 592 direction under material scraping plate effect.
In order to make tablet can circulating-heating in cylinder in this example, cylinder comprises interior cylinder 51 and the outer cylinder 52 of coaxial setting, a cylinder can be arranged in other embodiments transmit, outer cylinder 52 in this example is enclosed within outside interior cylinder 51, the length of interior cylinder 51 is less than the length of outer cylinder 52, between interior cylinder 51 and outer cylinder 52 by support is fixing can synchronous rotary, interior cylinder 51 and outer cylinder 52 are by heat-resisting, high-abrasive material is made, outer cylinder 52 outer wall is enclosed with heat-insulation layer, interior cylinder 51 inwall surface thereof is provided with multiple first material scraping plate 53, outer cylinder 52 inwall surface thereof is provided with multiple second material scraping plate 54, the incline direction of the second material scraping plate 54 and the first material scraping plate 53 is contrary, first material scraping plate 53 and the second material scraping plate 54 are uniformly distributed on interior cylinder 51 and outer cylinder 52 inwall, supporting seat 11 is fixed with the first end cap 56 and the second end cap 55, cylinder feed end and discharge end two ends cover and seal by the first end cap 56 and the second end cap 55, waste heat air inlet 591 is opened in the second end cap 55 central authorities, discharging opening 592 is positioned on the second end cap 55 below waste heat air inlet 591, this discharging opening 592 is provided with for splicing and the door panel structure of closing discharging opening 592, discharging opening 592 and feed intake between well 64 and be provided with weighing hopper 94.Exhaust opening and charging aperture are located on the first end cap 56, and the chute of batch charging mechanism 3 stretches in interior cylinder 51 or between interior cylinder 51 and outer cylinder 52 from charging aperture; Angle between first material scraping plate 53 and interior cylinder 51 center line is 3 °, and the angle between the second material scraping plate 54 and outer cylinder 52 center line is-3 °.
Door panel structure comprises door-plate 581, cross bar 583 and two cylinders 584, cross bar 583 is horizontally set on the discharge end of cylinder, door-plate 581 is fixed on cross bar 583, cylinder both sides are stretched out at the two ends of cross bar 583, and be fixedly connected with pivoted arm 582 respectively, two cylinders 584 are vertically arranged on the both sides of cylinder discharge end, cylinder 584 lower end and supporting seat 11 hinged, cylinder 584 upper end and pivoted arm 582 hinged.By the lifting of cylinder 584 bar, the upset of adjustment cross bar 583 and door-plate 581, thus switch in discharging and between closing the door, can by controlling the speed etc. of the Angle ambiguity discharging that door-plate 581 overturns, certainly between cross bar 583 and door-plate 581, also can linkage be set, pulls it to overturn by linkage.
Below door-plate 581, correspondence is provided with dump skip 97, elephant trunk 93 is connected with below dump skip 97, elephant trunk 93 extends downward above the well 64 that feeds intake, weighing hopper 94 is arranged in the middle part of elephant trunk 93 or bottom, turnover panel 96 is also provided with bottom weighing hopper 94, this turnover panel 96 drives upset by the second cylinder 95 be arranged on elephant trunk 93, this structure and the similar driving door-plate 581.
Consider in this example that the height of preheating device 5 is higher than smelting furnace 6, thus by the bracing frame 10 of frame structure, preheating device 5 is supported, charging device front is also provided with hoisting mechanism 21, for the tablet of crushing mechanism is sent in batch charging mechanism 3, these mechanisms are all conventional meanses, do not repeat them here, when difference in height is suitable in other embodiments, bracing frame 10 and hoisting mechanism 21 etc. can be saved.
The present invention, preheating device 5 pairs of tablets were set before smelting furnace 6 melting and carry out preheating, the tablet temperature entering smelting furnace 6 is enable to reach 300 ° to 400 °, reduce the temperature difference with smelting furnace 6, blast after preventing the tablet cooled from entering smelting furnace 6, the efficiency of melting can be improved simultaneously, reduce the combustion heating time of smelting furnace 6; Owing to adopting the flue gas of smelting furnace 6 to carry out preheating to tablet, the waste heat that smelting furnace 6 is vented is fully used, and reduces energy loss, reduces energy consumption, realizes recycling of the energy.Meanwhile, this system operation is simplified, and changes traditional to be molten into melting once twice, and shorten the production cycle, smelting furnace 6 liquation out can be transported out for subsequent use according to demand; This system footprint area is little, can adapt to the demand of various enterprise.
The direction of the second material scraping plate 54 is contrary with the first material scraping plate 53 incline direction, and interior cylinder 51 and outer cylinder 52 synchronous axial system, therefore tablet is entered by interior cylinder 51, after feed end is sent to discharge end and carries out heat exchange, fall into outer cylinder 52 near one end of discharging opening 592, by outer cylinder 52, tablet being sent to feed end again, by arranging the mechanisms such as guide plate, tablet being entered in interior cylinder 51 again, thus make tablet continue the preheating at interior cylinder 51 and the motion of outer cylinder 52 Inner eycle.The setting of two-layer cylinder structure, when smelting furnace 6 does not need to add tablet, tablet can be made to move back and forth in interior cylinder 51 and outer cylinder 52, ensure the temperature of tablet, when needs are reinforced, open discharging opening 592 and add, is main heat exchanger channels in cylinder 51 because hot gas enters in after cylinder, therefore tablet is preferably entered by interior cylinder 51, and certain tablet also can be entered by the space between outer cylinder 52 and interior cylinder 51.
Undertaken quantitatively accurately feeding intake by weighing hopper 94, thus can according to the depth of smelting furnace 6 inner melt, adjustment reinforced number, prevent tablet from too much impacting equipment such as circulating pump 63 grade in smelting furnace 6; Stored by holding furnace 7 after liquation finished product, liquation meter 8 is to the liquation accurate measurement of transporting out.
In addition the link that feeds intake in the present invention also can adopt Manual material feeding to substitute; Any person skilled in the art scholar all under the spirit and category of invention, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that invention discloses, must be contained by the claim of inventing.

Claims (10)

1. the environmental protection of a non-ferrous metals casting melt, production energy-saving system, comprise smelting furnace, described smelting furnace is provided with feed intake well and waste heat exhaust outlet, it is characterized in that: also comprise batch charging mechanism and the preheating device for heating non-ferrous metal tablet, this preheating device comprises preheating chamber, charging aperture and discharging opening, described batch charging mechanism is connected with charging aperture, described in the well that feeds intake be connected with discharging opening, described waste heat exhaust outlet is by flue and preheating chamber.
2. the environmental protection of a kind of non-ferrous metals casting melt according to claim 1, production energy-saving system, it is characterized in that: described preheating device is provided with waste heat air inlet near one end of discharging opening, described flue two ends are connected with waste heat exhaust outlet and waste heat air inlet respectively, described preheating device is provided with exhaust opening near one end of charging aperture, and this exhaust opening is connected with dust arrester by pipeline.
3. the environmental protection of a kind of non-ferrous metals casting melt according to claim 2, production energy-saving system, it is characterized in that: described preheating device comprises the driving mechanism of at least one cylinder and head roll rotation, described charging aperture and exhaust opening are positioned at the first end of cylinder, described waste heat air inlet and discharging opening are positioned at the second end of cylinder, described inner wall of rotary drum surface thereof is provided with multiple material scraping plate, when drive unit head roll rotates, described tablet moves to discharging opening direction under material scraping plate effect.
4. the environmental protection of a kind of non-ferrous metals casting melt according to claim 3, production energy-saving system, it is characterized in that: described cylinder comprises the interior cylinder of coaxial setting and outer cylinder, the length of interior cylinder is less than the length of described outer cylinder, fixed by support between interior cylinder and outer cylinder, described inner wall of inner drum surface thereof is provided with multiple first material scraping plate, outer inner wall of rotary drum surface thereof is provided with multiple second material scraping plate, and the incline direction of described second material scraping plate and the first material scraping plate is contrary.
5. the environmental protection of a kind of non-ferrous metals casting melt according to claim 4, production energy-saving system, it is characterized in that: described driving mechanism and cylinder are installed on supporting seat, described cylinder feed end and discharge end are covered with the first end cap and the second end cap respectively, first end cap and the second end cap are fixedly installed on supporting seat, and by the sealing of described cylinder two ends, described waste heat air inlet is opened in the second end cap central authorities, described discharging opening is positioned on the second end cap below waste heat air inlet, this discharging opening is provided with for splicing and the door panel structure of closing discharging opening, described discharging opening and feed intake between well and be provided with weighing hopper.
6. the environmental protection of a kind of non-ferrous metals casting melt according to claim 4 or 5, production energy-saving system, it is characterized in that: described exhaust opening and charging aperture are located at first end and cover, the chute of described batch charging mechanism stretches in interior cylinder or between interior cylinder and outer cylinder from charging aperture; Angle between described first material scraping plate and interior centre of the drum line is 3 ° ~ 5 °, and the angle between described second material scraping plate and outer centre of the drum line is-3 ° ~-5 °.
7. the environmental protection of a kind of non-ferrous metals casting melt according to claim 5, production energy-saving system, it is characterized in that: described door panel structure comprises door-plate, cross bar and two cylinders, described cross bar is horizontally set on the discharge end of cylinder, described door-plate is fixed on cross bar, cylinder both sides are stretched out at the two ends of described cross bar, and are fixedly connected with pivoted arm respectively, and two described cylinders are vertically arranged on the both sides of cylinder discharge end, cylinder lower end and supporting seat hinged, cylinder upper end and described pivoted arm hinged.
8. the environmental protection of a kind of non-ferrous metals casting melt according to claim 7, production energy-saving system, it is characterized in that: below described door-plate, correspondence is provided with dump skip, elephant trunk is connected with below dump skip, elephant trunk extends downward the aboveground side that feeds intake, described weighing hopper is arranged in the middle part of elephant trunk or bottom, also be provided with turnover panel bottom weighing hopper, this turnover panel is overturn by the second air cylinder driven be arranged on elephant trunk.
9. the environmental protection of a kind of non-ferrous metals casting melt according to claim 1, production energy-saving system, it is characterized in that: also comprise crushing mechanism and holding furnace, tablet after crushing mechanism process is delivered to batch charging mechanism by connecting gear, described holding furnace is connected with described smelting furnace by fluid groove, and the liquid outlet of this holding furnace is also provided with liquation meter.
10. the environmental protection of a kind of non-ferrous metals casting melt according to claim 1, production energy-saving system, it is characterized in that: described smelting furnace comprises body of heater and partition wall, body of heater is divided into combustion chamber and feed compartment by described partition wall, circulating pump is provided with in feed compartment, the described well location that feeds intake is above the eddy current of feed compartment, described partition wall is provided with two liquation openings, two liquation openings lay respectively at the upstream and downstream of eddy current, and described waste heat exhaust outlet is arranged on top of combustion chamber.
CN201510124835.2A 2015-03-20 2015-03-20 Environmental-protection and energy-saving production system of nonferrous metal casting melt CN104764326B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105648221A (en) * 2016-03-02 2016-06-08 江阴迪新金属工业有限公司 Rod casting system and method for recycling and smelting long scrap aluminum materials
CN105648222A (en) * 2016-03-02 2016-06-08 江阴迪新金属工业有限公司 Rod casting system and method for recycling and smelting small materials of aluminum scraps

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