CN205254024U - Quick calcination regeneration system of energy -saving coil cooling formula casting sand - Google Patents
Quick calcination regeneration system of energy -saving coil cooling formula casting sand Download PDFInfo
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- CN205254024U CN205254024U CN201620017548.1U CN201620017548U CN205254024U CN 205254024 U CN205254024 U CN 205254024U CN 201620017548 U CN201620017548 U CN 201620017548U CN 205254024 U CN205254024 U CN 205254024U
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Abstract
The utility model provides a quick calcination regeneration system of energy -saving coil cooling formula casting sand, includes preheating unit, calcination regenerating unit and high temperature flue gas processing unit, and calcination regenerating unit includes the furnace body, has been set gradually cloth room, combustion chamber, one -level heat -exchanging chamber, second grade heat -exchanging chamber and has collected the sand room under to by last in the furnace body, and the top of furnace body is provided with second feed inlet and main exhaust pipe respectively, and the bottom of furnace body is provided with the second discharge gate. The last first feed inlet of preheating unit links to each other with the automatic feeder of old sand, and first discharge gate links to each other with the second feed inlet. First on the high temperature flue gas processing unit advances the mouth and links to each other with main exhaust pipe, and first outlet flue advances the mouth with the second and links to each other, and first air inlet links to each other with first air -blower, and first gas outlet is continuous with one -level heat -exchanging chamber with the combustion chamber of calcination unit respectively. The utility model discloses realizing the regenerative process of molding sand, make full use of regenerative process's energy improves regeneration facility's work efficiency, avoids the energy extravagant.
Description
Technical field
The utility model relates to a kind of recycling cast waste sand system, especially a kind of height of energy-saving casting model powderTemperature is roasting regeneration system fast, belongs to Casting Equipment technical field.
Background technology
Along with the continuous lifting of China's machinery industry manufacture level, the surface quality of continuous castings of casting industry is wantedAsk more and more higher, the usage ratio of covering the Novel molding sand such as sand and resin sand is more and more higher. Product has been castBi Hou, above-mentioned molding sand becomes cast waste sand. The circulating and recovering of cast waste sand can make foundry enterprise haveEffect reduces energy resource consumption, energy-saving sand resource, fundamentally prevents the pollution problem of waste molding sand to environment.
The key technical problem of recycling cast waste sand reuse is to realize effective separation of two class materials, i.e. typeThe remaining material that measures greatly cementation in sand matrix and molding sand surface departs from mutually, as various resin materials,Waterglass etc.
At present, the renovation process of cast waste sand mainly contains mechanical method of reproduction and thermal reclamation, and wherein hot method againLife is to the organic matter such as overlay film or resin that cast waste sand heats, sand grain surface parcel is removed in calcination,Regeneration effect is better. But in thermal reclamation process, cast waste sand enters after sand preparing machine fast continuouslySpeed heats up, and sand grain surface organic matter is separated and remove, then the rapid cooling regenerative process that enters. But warpThe reclaimed sand obtaining after supercooling regenerative process often has higher temperature, produces on the one hand energy waste,Conveying to reclaimed sand on the other hand, storage cause difficulty.
In order to solve the problem of energy waste, the Chinese patent application public affairs that application number is 2010101972375Driven a kind of waste molding sand or core reclaim equiment, this equipment is by heat convection technology and the heating of boiling fluidisationTechnology combination, should be in the thermal reclamation of waste and old type (core) sand. Outlet flue by roaster top passes through cigaretteRoad is communicated with fluidising chamber, and the high-temperature flue gas of discharging from the outlet flue on roaster top enters into stream by flueChange indoorly, for the fluidisation thermal regeneration of sand grains, thereby heat energy is fully utilized, flue gas loss is fallenLow. Although utilize this kind of method can make the heat of part high-temperature flue gas be utilized, also existSome shortcomings. First, due to enter gas in fluidising chamber be equipment top discharge after burningFlue gas, temperature is very high, therefore can make the sand grains through roasting of equipment below be difficult to cooling, thereby rightCollection and the transport of regeneration sand grains are made troubles, and affect the regeneration efficiency of equipment; Secondly, after burningFlue gas exist the problem that oxygen content is low, cannot meet the needs of burning, make to spray in burnerFuel cannot fully burn, so not only can cause energy waste, also can be to environment.
A kind of waste molding sand that the Chinese patent that is 2010101972375 for application number provides or core are againThe collection of the regeneration sand grains that generating apparatus exists and the problem that transport is made troubles, application number is201210360433.9 Chinese patent a kind of boiling type fluo solid roaster is provided, this roaster is at body of heaterBelow be fixedly installed a remittance air chamber, converge on the roof of air chamber and be fixedly installed airduct, described airductLower end be arranged in converge air chamber, the upper end of airduct is positioned at heat exchange zone and is provided with blast cap. At practical processSand grains after middle roasting through with airduct in air carry out heat exchange, on the one hand, can accelerate sand grainsCooling; On the other hand, the air displacement hot-air in airduct is entered in burner hearth, help old sand in burner hearthBurning. But in this scheme, be still directly discharged in atmosphere through the high-temperature flue gas of roasting, do not haveMake full use of the heat in high-temperature flue gas, cause the waste of the energy.
Utility model content
Tired for the energy waste existing in existing cast waste sand thermal reclamation process and conveying, storageDifficult problem, the utility model provides a kind of energy-saving coil pipe cooled casting model powder quick roasting regeneration system,The surface organic matter of cast waste sand is fully peeled off, realize the regenerative process of molding sand; Meanwhile, make full use ofThe energy of regenerative process, the operating efficiency of raising reclaim equiment, avoids energy waste.
The technical scheme in the invention for solving the technical problem is:
The quick roasting regeneration system of a kind of energy-saving coil pipe cooled casting model powder, comprises preheating unit and roastingRegeneration unit, described roasting regeneration unit comprises body of heater, is disposed with from top to bottom cloth in described body of heaterMaterial chamber, combustion chamber, heat-exchanging chamber and sand collecting chamber, the top of described body of heater is respectively arranged with the second charging apertureWith main smoke discharging pipe, the bottom of described body of heater is provided with the second discharging opening, on described the second discharging opening, arrangesThere is the valve of shaking out,
Described preheating unit is arranged at the outside of roasting regeneration unit;
Described preheating unit comprises First Heat Exchanger, is respectively arranged with the first charging on described First Heat ExchangerMouth, the first discharging opening, second enter mouth and the second outlet flue;
Described the first charging aperture is connected with old sand automatic feeding device, described the first discharging opening be arranged at roastingThe second charging aperture burning on regeneration unit is connected;
Described heat-exchanging chamber comprises one-level heat-exchanging chamber and secondary heat-exchanging chamber, and described one-level heat-exchanging chamber is establishedBe placed in the top of described secondary heat-exchanging chamber;
In described one-level heat-exchanging chamber, be provided with heat exchange box, be arranged on body of heater inside, described heat exchange box comprisesUpper plectane, lower plectane and gusset plate, described upper plectane, lower plectane and gusset plate have formed a circle jointlyThe hollow structure of shape, is provided with the second air inlet on described gusset plate, described upper plectane and described lower plectaneOn be provided with between through hole and relative through hole and be connected by leaking sandpipe, on described upper plectane, be provided with theTwo gas outlets, are provided with the first airduct connecting with the second air inlet on described the second gas outlet, and described theOne airduct upper end is positioned at plectane upside and is provided with the first blast cap;
Described secondary heat-exchanging chamber comprises outer coil pipe, inner coil pipe, the second air blast and sieve plate, described inner discPipe is connected with body of heater by sieve plate with outer coil pipe, and described outer coil pipe and inner coil pipe are all helix structure,The diameter of described inner coil pipe is less than the diameter of described outer coil pipe, and described inner coil pipe is arranged at described outer coil pipeInside, the two ends of described outer coil pipe and inner coil pipe are opening setting, and described outer coil pipe and described inAfter the openend parallel connection that is positioned at below of coil pipe, be connected with described the second air blast;
The outside of described roasting regeneration unit is also provided with high-temperature flue gas processing unit;
Described high-temperature flue gas processing unit comprises the second heat exchanger and the first air blast;
On described the second heat exchanger, be respectively arranged with first enter mouth, the first outlet flue, the first air inlet andThe first gas outlet;
Described first enters mouth is connected with the main smoke discharging pipe at described body of heater top, described the first outlet flue withOn described First Heat Exchanger second enters mouth and is connected;
Described the first air inlet is connected with described the first air blast, described the first gas outlet respectively with described roastingThe combustion chamber of burning unit is connected with one-level heat-exchanging chamber.
According to a detailed description of the invention of the present utility model, indoor cloth cone and the cloth of being provided with of described clothMaterial screen plate, described cloth cone is positioned at the top of described cloth sieve plate, and described cloth cone is cone-shaped structure,Described cloth sieve plate is inverted round table-like structure, and described cloth cone is fixedly connected with body of heater by connecting rod,Larger one end of diameter of described cloth sieve plate is fixedly connected with body of heater, described cloth cone and cloth sieve plateOn the conical surface, be provided with the uniform sieve aperture along body of heater axial direction.
Further, the diameter of the lower end of described cloth cone be greater than the diameter of described cloth sieve plate less oneThe diameter of end.
According to another detailed description of the invention of the present utility model, described First Heat Exchanger adopts superconduction heat exchangeDevice, described superconductive heat exchanger comprises casing and superconduction heat exchange pipe, in described casing, is provided with dividing plate, described inCasing is divided into cold sand chamber and hot air chamber by dividing plate, is provided with superconduction heat exchange pipe on described dividing plate, and described firstCharging aperture and the first discharging opening are arranged at respectively the top and bottom of cold sand chamber, and described second enters mouth andOne enters mouth is arranged at respectively the top and bottom of hot air chamber.
Further, described superconduction heat exchange pipe is arranged on described dividing plate with certain gradient, wherein lowerTo be positioned at cold sand indoor in one end, higher one end is positioned at hot air chamber.
According to another detailed description of the invention of the present utility model, described the second heat exchanger adopts pipe type heat transferDevice, described pipe heat exchanger comprises that housing, heat exchanger tube, first enter mouth, the first outlet flue, first entersGas port and the first gas outlet, one end of described heat exchanger tube is connected with the first air inlet, described heat exchanger tube anotherOne end is connected with the first gas outlet.
According to another detailed description of the invention of the present utility model, on the sidewall of the furnace body of described combustion chamber, establishBe equipped with several burners, and described burner axis around body of heater on sustained height is evenly arranged,Each burner is to oblique below flame flame form eddy current air-flow in body of heater.
The beneficial effects of the utility model are:
The quick roasting regeneration system of the energy-saving coil pipe cooled of one casting model powder that the utility model provides,
The first, by being set, old sand preheater can utilize the heat of the rear flue gas of burning in advance by the temperature of old sandDegree promotes rapidly.
The second, by external box-type heat exchanger is set, by the low-temperature flue gas obtaining through heat transfer process withOld sand preheater is communicated with, and old sand is carried out and heat treatment, and what obtain through heat transfer process adds hot-air respectivelyBe passed in combustion chamber and one-level heat-exchanging chamber, be conducive to keep the temperature in combustion chamber, save fuel,The high-temperature flue gas that roaster is discharged is able to sufficient utilization.
The 3rd, by secondary heat-exchanging chamber is set, blast air, one from stove inner bottom part secondary heat-exchanging chamberAspect, by the gas outlet of the two helical form coil pipes that are oppositely arranged, plays and stirs and holder the sand grains fallingAct effect, makes the sand grains at the upper and lower plan-position of heat-exchanging chamber place keep fluidized state, makes between particle mutualFriction, reduces the particle surface residue after roasting, on the other hand, contains the sand of amount of residual heat will after roastingWhen son is piled up the bottom of our body of heater, and there is heat exchange between two spiral helicine coil pipes, be also conducive to reduceThe temperature of discharging sand grains.
Brief description of the drawings
Fig. 1 is loop structure schematic diagram of the present utility model;
Fig. 2 is the structural representation of superconductive heat exchanger 1 in the utility model preheating unit;
Fig. 3 is the structural representation of pipe heat exchanger in the utility model high-temperature flue gas processing unit;
Fig. 4 is the structural representation in the utility model roasting regeneration unit;
Fig. 5 is the top view of roaster;
Fig. 6 is the schematic diagram of arranging of burner on roaster;
Fig. 7 is position relationship and the structural representation of cloth cone and cloth sieve plate in roaster cloth chamber;
Fig. 8 is the top view of heat exchange box in roaster one-level heat-exchanging chamber;
Fig. 9 is the A-A cutaway view in Fig. 8;
Figure 10 is position relationship and the structural representation of one-level heat-exchanging chamber and secondary heat-exchanging chamber in roasterFigure;
Figure 11 is the structural representation of superconductive heat exchanger 1 in embodiment bis-.
In figure: 1-superconductive heat exchanger, 11-casing, 12-dividing plate, the cold sand of 13-chamber, 14-hot air chamber, 15-Superconduction heat exchange pipe, 16-the first charging aperture, 17-the first discharging opening, 18-second enters mouth, and 19-second goes outMouth, 2-body of heater, 21-inner thermal insulating layer, 22-external thermal insulation, 23-the second charging aperture, 24-props up smoke evacuationMouthful, 25-props up smoke discharging pipe, the main smoke discharging pipe of 26-, and 3-cloth chamber, 31-cloth cone, 311-connecting rod,32-cloth sieve plate, 4-combustion chamber, 41-burner, 411-fuel inlet, the import of 412-combustion-supporting gas,5-one-level heat-exchanging chamber, 51-heat exchange box, the upper plectane of 511-, plectane under 512-, 513-gusset plate, 514-The second air inlet, 515-leaks sandpipe, 516-the second gas outlet, 517-the first airduct, 518-the first blast cap,6-secondary heat-exchanging chamber, the outer coil pipe of 61-, 62-inner coil pipe, 63-the second air blast, 64-sieve plate, 7-collectionSand chamber, 71-the second discharging opening, the 72-valve that shakes out, 8-pipe heat exchanger, 81-housing, 82-heat exchanger tube,83-first enters mouth, 84-the first outlet flue, 85-the first air inlet, 86-the first gas outlet, 9-firstAir blast.
Detailed description of the invention
Embodiment mono-:
As shown in Figure 1, the quick roasting regeneration system of the energy-saving coil pipe cooled of described one casting model powder bagDraw together preheating unit, roasting regeneration unit and high-temperature flue gas processing unit.
As shown in Figure 2, described preheating unit comprises First Heat Exchanger, and described First Heat Exchanger adopts superLead heat exchanger 1, described superconductive heat exchanger 1 comprises casing 11 and superconduction heat exchange pipe 15. Described casing 11Inside be provided with dividing plate 12, the space in casing 11 is divided into two parts by described dividing plate 12, and a part isCold sand chamber 13, another part is hot air chamber 14. On described dividing plate 12, be provided with superconduction heat exchange pipe 15, instituteState superconduction heat exchange pipe 15 and be arranged on dividing plate 12 with certain gradient, wherein lower one end is positioned at cold sandIn chamber 13, higher one end is positioned at hot air chamber 14. The upper end of described cold sand chamber 13 is provided with first and entersMaterial mouth 16, described the first charging aperture 16 is connected with old sand automatic feeding device, under described cold sand chamber 13End is provided with the first discharging opening 17, and described the first discharging opening 17 is by taper sand trap 10 and roaster phaseConnect. The bottom of described hot air chamber 14 is provided with second and enters mouth 18, and top is provided with the second outlet flue 19.Like this, enter hot air chamber 14 when the higher flue gas of temperature enters mouth 18 from second, pass through superconduction heat exchangeHeat is delivered to cold sand chamber 13 by pipe 15, thereby improve the temperature in cold sand chamber 13, falls at old sandIn process, carry out heat exchange, thereby improve the temperature of old sand, old sand is carried out to the pre-heat treatment, improve roastingThe efficiency of regeneration. In order to keep the temperature in superconductive heat exchanger 1, avoid thermal loss, described casing11 outside is coated with the heat-insulation layer of being made up of insulation material.
As shown in Figure 4, described roasting regeneration unit comprises roaster, and described roaster comprises body of heater 2,In described body of heater 2, be disposed with from top to bottom cloth chamber 3, combustion chamber 4, one-level heat-exchanging chamber 5, twoLevel heat-exchanging chamber 6 and sand collecting chamber 7. Described body of heater 2 is cylindrical tubular structure for tapered centre, two ends,And described centre is cylindrical part is inside and outsidely respectively arranged with inner thermal insulating layer 21 and outer insulationLayer 22, described inner thermal insulating layer 21 and the material of external thermal insulation 22 are heat insulating refractory material. As Fig. 5 instituteShow, the centre position at described body of heater 2 tops is provided with the second charging aperture 23, and described the second charging aperture 23 is logicalCrossing taper sand trap 10 is connected with the first discharging opening 17 of superconductive heat exchanger 1. The top of described body of heater 2Also be provided with four exhaust openings 24, four described exhaust openings 24 form one square, described rowMouth 24 is connected with smoke discharging pipe 25, and each smoke discharging pipe 25 all with main smoke discharging pipe 26 phasesConnect.
As shown in Figure 4, in described cloth chamber 3, be provided with cloth cone 31 and cloth sieve plate 32, describedCloth cone 31 is positioned at the top of cloth sieve plate 32. Described cloth cone 31 is by connecting rod 33 and body of heater 2The taper end face on top is fixedly connected with, and described cloth sieve plate 32 is fixedly connected with the top on the body of heater face of cylinder.As shown in Figure 7, described cloth cone 31 is cone-shaped structure, and described cloth sieve plate 32 is inverted round platformShape structure, and be provided with along body of heater axial direction on the conical surface of described cloth cone 31 and cloth sieve plate 32Uniform sieve aperture. First the old sand entering in body of heater 2 through the second charging aperture 23 like this drops to clothOn material cone 31, be positioned at the old sand that cloth bores beyond 31 diameters and will fall on cloth sieve plate 32, due to clothOn material cone 31 and cloth sieve plate 32, be evenly equipped with sieve aperture, therefore old sand will have in the time just entering combustion chamber 4The even whereabouts effect of raindrop type, thus the space in combustion chamber 4 utilized fully, raising roasterTreatment effect. Directly fall to combustion chamber 4, institute in order to prevent from being positioned at the old sand that cloth bores beyond 31 diametersThe diameter of stating the lower end of cloth cone 31 is greater than the diameter of one end that the diameter of cloth sieve plate 32 is less.
As shown in Figure 4, the below of described cloth chamber 3 is provided with combustion chamber 4, described combustion chamber 4On sidewall of the furnace body, be provided with several burners 41, the quantity in the present embodiment is three, as shown in Figure 6,Three burners 41 are evenly arranged around the axis of body of heater 2 on sustained height, and each burner 41All be certain angle with the horizontal direction of body of heater 2 and vertical direction, make course of work Flame towards stoveSpray oblique below in body 2, and this is conducive to produce eddy current effect at combustion process Flame, homogeneous heating,To contribute to the Multidirectional motion of sand grains, promote surperficial organic layer reaction to peel off. Each described burner 41On be provided with fuel inlet 411 and combustion-supporting gas import 412, in described fuel inlet 411, be provided withRatio adjusting valve, is provided with electric butterfly valve in described combustion-supporting gas import 412.
As shown in Figure 4, the below of described combustion chamber 4 is provided with one-level heat-exchanging chamber 5, described one-levelIn heat-exchanging chamber 5, be provided with heat exchange box 51. As shown in Fig. 8, Fig. 9 and Figure 10, described heat exchange box 51Comprise plectane 511, lower plectane 512 and gusset plate 513, described upper plectane 511, lower plectane 512Jointly form a circular hollow structure with gusset plate 513, on described gusset plate 513, be provided withThe second air inlet 514, is provided with the pipeline through body of heater 2 on the second described air inlet 514. As figureShown in 10, on described upper plectane 511 and lower plectane 512, correspondence is provided with through hole, and described upper plectane511 are connected by leaking sandpipe 515 with the relative through hole of lower plectane 512. On described upper plectane 511Also be provided with the second gas outlet 516, on the second described gas outlet 516, be provided with the first airduct 517, forAvoid sand fall process in enter in heat exchange box 51 from the first airduct 517, the first described windOn pipe 517, be provided with the first blast cap 518.
As shown in Figure 4, the below of described one-level heat-exchanging chamber 5 is provided with secondary heat-exchanging chamber 6, and described twoLevel heat-exchanging chamber 6 comprises outer coil pipe 61, inner coil pipe 62, the second air blast 63 and sieve plate 64. In describedCoil pipe 62 is connected with body of heater 2 by sieve plate 64 with outer coil pipe 61. As shown in figure 10, described outer diskPipe 61 and inner coil pipe 62 are all helix structure, and the diameter of described inner coil pipe 62 is less than outer coil pipe 61Diameter, and be arranged at the inside of outer coil pipe 61. The two ends of described outer coil pipe 61 and inner coil pipe 62 areOpening arranges, and passes through after the openend parallel connection that is positioned at below of described outer coil pipe 61 and inner coil pipe 62Pipeline is connected with described the second air blast 63. Mainly contain like this three aspects: effect, the first, fall at sandIn process through one-level heat-exchanging chamber 5, the air blasting from secondary heat-exchanging chamber 6 is passing through one-level heatWhen leakage sandpipe 515 on the heat exchange box 51 of switch room 5, can be to rising by leaking the sand that sandpipe 515 fallsTo the effect of stirring and lifting, make the sand at one-level heat-exchanging chamber plan-position place Shang Xia 5 hold fluidized state,Make phase mutual friction between particle, reduce the particle surface residue after roasting; The second, because second heat is handed overChange chamber 6 and remain on barotropic state, under the drive of the effect of increasing of air, the sand grains that partial frictional comes offSurface residue will rise with hot-air, enters combustion chamber 4 and further burns, and is finally discharged fumePipeline is taken away; The 3rd, as shown in figure 10, described outer coil pipe 61 and inner coil pipe 62 be positioned at going out of upper endAir port is oppositely arranged, and described outer coil pipe 61 and inner coil pipe 62 air-out direction for obliquely, thereforeThe air-out mode of the coil pipe of secondary heat-exchanging chamber 6 in the shape of a spiral, thereby can to sand play stir and holderThe effect of lifting, makes the sand can fast cooling in the time of floating state, when sand falls to the bottom of body of heaterAnd while piling up, further carry out heat exchange by contacting with coil pipe, thus reduce the temperature of sand, with sideJust store and transport.
As shown in Figure 4, the below of described secondary heat-exchanging chamber 6 is sand collecting chamber 7, after regeneration coolingSand fall sand collecting chamber 7 in, the bottom of described sand collecting chamber 7 is provided with the second discharging opening 71, described in go outOn material mouth 71, be provided with the valve 72 that shakes out.
As shown in Figure 1, described high-temperature flue gas processing unit the second heat exchanger and the first air blast 9, described inThe second heat exchanger adopts pipe heat exchanger 8. As shown in Figure 3, described pipe heat exchanger 8 comprises housing81, heat exchanger tube 82, first enters mouth 83, the first outlet flue 84, the first air inlet 85 and first and gives vent to angerMouth 86. Described the first air blast 9 is connected with heat exchanger tube 82 by the first air inlet 85.
As shown in Figure 1, first of described pipe heat exchanger 8 the main smoke evacuation of entering mouth 83 and roaster topPipeline 26 is connected, the first outlet flue 84 of described pipe heat exchanger 8 and the superconductive heat exchanger 1 of preheating unitSecond enter mouth 18 and be connected, the second outlet flue 19 and exhaust treatment system of described superconductive heat exchanger 1Be connected. The first gas outlet 86 of described pipe heat exchanger 8 respectively with burner 41 on combustion-supporting gas enterMouth 412 is connected with the second air inlet 514 on heat exchange box 51.
When work, the high-temperature flue gas of discharging through body of heater 2 main smoke discharging pipes 26 in top, by pipeline from pipeFirst of formula heat exchanger 8 enters mouth 83 and enters pipe heat exchanger 8, meanwhile, the first air blast 9 toIn the heat pipe 82 of pipe heat exchanger 8, pass into air, the interior high-temperature flue gas of pipe heat exchanger 8 and air itBetween carry out heat exchange, then low-temperature flue gas is discharged from the first outlet flue 84 of pipe heat exchanger 8, hot-airDischarge from the first gas outlet 86 of pipe heat exchanger 8. Described the first outlet flue from pipe heat exchanger 884 discharge low-temperature flue gas enter second of superconductive heat exchanger 1 by pipeline and enter mouth 18, and at superconduction heat exchangeIn device 1, carry out heat exchange with old sand, old sand is carried out to the pre-heat treatment, final superconductive heat exchanger 1 hot air chamberFlue gas in 14 enters exhaust treatment system after the second outlet flue 19 is discharged. Described from pipe heat exchangerThe first gas outlet 86 of 8 is discharged hot-air and is entered respectively combustion chamber 4 and one-level heat-exchanging chamber 5 by pipeline,The hot-air that passes into one-level heat-exchanging chamber 5 enters burning by the second gas outlet 516 on heat exchange box 51 againChamber 4. Pass into the hot-air of one-level heat-exchanging chamber 5, on the one hand can with the sand falling by leaking sandpipe 515Son carries out heat exchange, further improves and pass into one-level heat-exchanging chamber 5 when sand is lowered the temperatureThe temperature of hot-air, is conducive to keep the temperature in combustion chamber 4, saves fuel; On the other hand, due toThe air entering from secondary heat-exchanging chamber 6 is also finally to discharge from main smoke discharging pipe 26 through combustion chamber 4,In order to keep the temperature in combustion chamber 4, pass into hot-air in one-level heat-exchanging chamber 5 can also with from twoThe air that level heat-exchanging chamber 6 enters carries out heat exchange, thereby improves the sky entering from secondary heat-exchanging chamber 6The temperature of gas.
Embodiment bis-:
As shown in figure 11, described superconductive heat exchanger adopts double-layer box body, comprises internal box and outer case,Described internal box and outer case are all direction structure, the space forming between described internal box and outer caseFor hot air chamber 14, the Wei Lengsha chamber, space 13 of described internal box inside, described superconduction heat exchange pipe 15 is installedOn internal box, and one end of described superconduction heat exchange pipe 15 is positioned at cold sand chamber 13, and the other end is positioned at heatIn air compartment 14. All the other structures are with embodiment mono-.
Claims (7)
1. the quick roasting regeneration system of energy-saving coil pipe cooled casting model powder, comprises preheating unit and roastingBurn regeneration unit, described roasting regeneration unit comprises body of heater, in described body of heater, is disposed with from top to bottomCloth chamber, combustion chamber, heat-exchanging chamber and sand collecting chamber, the top of described body of heater is respectively arranged with the second chargingMouth and main smoke discharging pipe, the bottom of described body of heater is provided with the second discharging opening, on described the second discharging opening, establishesBe equipped with the valve that shakes out, it is characterized in that:
Described preheating unit is arranged at the outside of roasting regeneration unit;
Described preheating unit comprises First Heat Exchanger, is respectively arranged with the first charging on described First Heat ExchangerMouth, the first discharging opening, second enter mouth and the second outlet flue;
Described the first charging aperture is connected with old sand automatic feeding device, described the first discharging opening be arranged at roastingThe second charging aperture burning on regeneration unit is connected;
Described heat-exchanging chamber comprises one-level heat-exchanging chamber and secondary heat-exchanging chamber, and described one-level heat-exchanging chamber is establishedBe placed in the top of described secondary heat-exchanging chamber;
In described one-level heat-exchanging chamber, be provided with heat exchange box, be arranged on body of heater inside, described heat exchange box comprisesUpper plectane, lower plectane and gusset plate, described upper plectane, lower plectane and gusset plate have formed a circle jointlyThe hollow structure of shape, is provided with the second air inlet on described gusset plate, described upper plectane and described lower plectaneOn be provided with between through hole and relative through hole and be connected by leaking sandpipe, on described upper plectane, be provided with theTwo gas outlets, are provided with the first airduct connecting with the second air inlet on described the second gas outlet, and described theOne airduct upper end is positioned at plectane upside and is provided with the first blast cap;
Described secondary heat-exchanging chamber comprises outer coil pipe, inner coil pipe, the second air blast and sieve plate, described inner discPipe is connected with body of heater by sieve plate with outer coil pipe, and described outer coil pipe and inner coil pipe are all helix structure,The diameter of described inner coil pipe is less than the diameter of described outer coil pipe, and described inner coil pipe is arranged at described outer coil pipeInside, the two ends of described outer coil pipe and inner coil pipe are opening setting, and described outer coil pipe and described inAfter the openend parallel connection that is positioned at below of coil pipe, be connected with described the second air blast;
The outside of described roasting regeneration unit is also provided with high-temperature flue gas processing unit;
Described high-temperature flue gas processing unit comprises the second heat exchanger and the first air blast;
On described the second heat exchanger, be respectively arranged with first enter mouth, the first outlet flue, the first air inlet andThe first gas outlet;
Described first enters mouth is connected with the main smoke discharging pipe at described body of heater top, described the first outlet flue withOn described First Heat Exchanger second enters mouth and is connected;
Described the first air inlet is connected with described the first air blast, described the first gas outlet respectively with described roastingThe combustion chamber of burning unit is connected with one-level heat-exchanging chamber.
2. the quick roasting regeneration of the energy-saving coil pipe cooled of one according to claim 1 casting model powder systemSystem, is characterized in that: indoor cloth cone and the cloth sieve plate of being provided with of described cloth, described cloth cone is positioned atThe top of described cloth sieve plate, described cloth cone is cone-shaped structure, and described cloth sieve plate is inverted circlePlatform shape structure, described cloth cone is fixedly connected with body of heater by connecting rod, and the diameter of described cloth sieve plate isLarge one end is fixedly connected with body of heater, on the conical surface of described cloth cone and cloth sieve plate, is provided with along body of heaterThe uniform sieve aperture of axial direction.
3. the quick roasting regeneration of the energy-saving coil pipe cooled of one according to claim 2 casting model powder systemSystem, is characterized in that: the diameter that the diameter of the lower end of described cloth cone is greater than described cloth sieve plate is lessThe diameter of one end.
4. the quick roasting regeneration of the energy-saving coil pipe cooled of one according to claim 1 casting model powder systemSystem, is characterized in that: described First Heat Exchanger adopts superconductive heat exchanger, and described superconductive heat exchanger comprises caseBody and superconduction heat exchange pipe, be provided with dividing plate in described casing, and casing is divided into cold sand chamber and heat by described dividing plateAir compartment, is provided with superconduction heat exchange pipe on described dividing plate, described the first charging aperture and the first discharging opening are established respectivelyBe placed in the top and bottom of cold sand chamber, described second enters mouth and first enters mouth and is arranged at respectively hot air chamberTop and bottom.
5. the quick roasting regeneration of the energy-saving coil pipe cooled of one according to claim 4 casting model powder systemSystem, is characterized in that: described superconduction heat exchange pipe is arranged on described dividing plate with certain gradient, whereinIt is indoor that low one end is positioned at cold sand, and higher one end is positioned at hot air chamber.
6. the quick roasting regeneration of the energy-saving coil pipe cooled of one according to claim 1 casting model powder systemSystem, is characterized in that: described the second heat exchanger adopts pipe heat exchanger, and described pipe heat exchanger comprises shellBody, heat exchanger tube, first enter mouth, the first outlet flue, the first air inlet and the first gas outlet, described in changeOne end of heat pipe is connected with the first air inlet, and the other end of described heat exchanger tube is connected with the first gas outlet.
7. the quick roasting regeneration of the energy-saving coil pipe cooled of one according to claim 1 casting model powderSystem, is characterized in that: on the sidewall of the furnace body of described combustion chamber, be provided with several burners and instituteState burner axis around body of heater on sustained height and be evenly arranged, each burner in body of heater tiltedly underSide's flame flame also forms eddy current air-flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620017548.1U CN205254024U (en) | 2016-01-08 | 2016-01-08 | Quick calcination regeneration system of energy -saving coil cooling formula casting sand |
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| CN201620017548.1U CN205254024U (en) | 2016-01-08 | 2016-01-08 | Quick calcination regeneration system of energy -saving coil cooling formula casting sand |
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| CN205254024U true CN205254024U (en) | 2016-05-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499484A (en) * | 2016-01-08 | 2016-04-20 | 山东金璞新材料有限公司 | Energy-saving coil pipe cooling type quick roasting and regenerating system for foundry sand |
| CN114130948A (en) * | 2021-12-02 | 2022-03-04 | 南通美莱达科技有限公司 | Method for recycling waste ceramsite sand |
-
2016
- 2016-01-08 CN CN201620017548.1U patent/CN205254024U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499484A (en) * | 2016-01-08 | 2016-04-20 | 山东金璞新材料有限公司 | Energy-saving coil pipe cooling type quick roasting and regenerating system for foundry sand |
| CN114130948A (en) * | 2021-12-02 | 2022-03-04 | 南通美莱达科技有限公司 | Method for recycling waste ceramsite sand |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160525 Effective date of abandoning: 20170829 |