CN105458164B - A kind of quick roasting regeneration system of energy-saving filler cooled casting model powder - Google Patents
A kind of quick roasting regeneration system of energy-saving filler cooled casting model powder Download PDFInfo
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- CN105458164B CN105458164B CN201610012999.0A CN201610012999A CN105458164B CN 105458164 B CN105458164 B CN 105458164B CN 201610012999 A CN201610012999 A CN 201610012999A CN 105458164 B CN105458164 B CN 105458164B
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- plectane
- heater
- heat exchanger
- cloth
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
Abstract
A kind of quick roasting regeneration system of energy-saving filler cooled casting model powder, including preheating unit, roasting regeneration unit and high-temperature flue gas processing unit, roasting regeneration unit includes body of heater, cloth room, combustion chamber, one-level heat-exchanging chamber, two grades of heat-exchanging chambers and sand collecting chamber are disposed with from top to bottom in body of heater, second charging aperture and main smoke discharging pipe are respectively arranged with the top of body of heater, the bottom of body of heater is provided with the second discharging opening.First charging aperture on preheating unit is connected with old sand automatic feeding device, and the first discharging opening is connected with second charging aperture.The first smoke inlet on high-temperature flue gas processing unit is connected with main smoke discharging pipe, and the first outlet flue is connected with the second smoke inlet, and the first air inlet is connected with the first air blower, and the first gas outlet is connected with the combustion chamber of roasting unit and one-level heat-exchanging chamber respectively.The present invention is realizing the regenerative process of molding sand, makes full use of the energy of regenerative process, improves again the operating efficiency of generating apparatus, it is to avoid energy waste.
Description
Technical field
Quickly it is calcined again the present invention relates to a kind of recycling cast waste sand system, especially a kind of high temperature of energy-saving casting model powder
Raw system, belongs to Casting Equipment technical field.
Background technology
With the continuous lifting of China's machinery industry manufacture level, the surface quality of continuous castings to casting industry is required increasingly
Height, covers the use ratio more and more higher of the novel molding sands such as sand and resin sand.After product casting is finished, above-mentioned molding sand becomes
Cast waste sand.The circulating and recovering of cast waste sand can make the foundry enterprise effectively reduce energy resource consumption, energy-saving sand resource, from basic
On prevent pollution problem of the waste molding sand to environment.
The key technical problem of recycling cast waste sand reuse be realize efficiently separating for two class materials, i.e. molding sand matrix with
A large amount of materials for playing cementation of molding sand surface residual are mutually disengaged, such as various resin materials, waterglass.
At present, the renovation process of cast waste sand mainly has mechanical method of reproduction and thermal reclamation, and wherein thermal reclamation is to casting
The organic matters such as antiquated sand is heated, calcination removal sand grain surface is wrapped up overlay film or resin are made, regeneration effect is preferable.But, heat
In method regenerative process, cast waste sand is brought rapidly up after continuously entering sand preparing machine, sand grain surface organic matter is separated removal, so
Rapid cooling afterwards enters regenerative process.But the reclaimed sand obtained after supercooling regenerative process often has temperature higher,
On the one hand energy waste is produced, conveying on the other hand to reclaimed sand, storage cause difficulty.
In order to solve the problems, such as energy waste, the Chinese patent application of Application No. 2010101972375 discloses one kind
Waste molding sand or core generating apparatus again, the equipment are combined heat convection technology and boiling fluidisation heating technique, should be in waste and old type
The thermal reclamation of (core) sand.Will the outlet flue on roaster top connected with fluidising chamber by flue, from going out for roaster top
The high-temperature flue gas of mouth discharge are entered into fluidising chamber by flue, for the fluidisation thermal regeneration of sand grains, so that heat energy is obtained
To make full use of, flue gas loss reduction.Although the heat that can enable part high-temperature flue gas using this kind of method is utilized,
There is also some shortcomings.Firstly, since be to be discharged above equipment by the flue gas after burning into the gas in fluidising chamber,
Temperature is very high, therefore can cause that the sand grains by roasting below equipment is difficult to cool down, so as to collection and fortune to regenerating sand grains
It is defeated to make troubles, influence the regeneration efficiency of equipment；Secondly, there is a problem that oxygen content is low by the flue gas after burning, nothing
The need for method meets burning so that the fuel sprayed in burner cannot fully burn, and so not only result in energy waste, also
Environment can be polluted.
A kind of waste molding sand or core provided for the Chinese patent of Application No. 2010101972375 again deposit by generating apparatus
Regeneration sand grains collection and the problem made troubles of transport, the Chinese patent of Application No. 201210360433.9 provides
A kind of boiling type fluo solid roaster, the roaster is fixedly installed a remittance air chamber below body of heater, converges on the roof of air chamber
Airduct is fixedly installed, the lower end of the airduct is located in remittance air chamber, and the upper end of airduct is located at heat exchange zone and is provided with blast cap.
Sand grains after being calcined in practical process with the air in airduct by carrying out heat exchange, on the one hand, can accelerate the cold of sand grains
But；On the other hand, make the air in airduct conjugate hot-air to enter in burner hearth, help the burning of old sand in burner hearth.But the party
In case, still it is directly discharged in air by the high-temperature flue gas being calcined, does not make full use of the heat in high-temperature flue gas, is caused
The waste of the energy.
The content of the invention
For energy waste present in existing cast waste sand thermal reclamation process and conveying, store difficult asking
Topic, the present invention provides a kind of energy-saving quick roasting regeneration system of filler cooled casting model powder, makes the surface of cast waste sand organic
Thing is fully peeled off, and realizes the regenerative process of molding sand, meanwhile, the energy of regenerative process is made full use of, improve again the work of generating apparatus
Efficiency, it is to avoid energy waste.
The technical scheme adopted by the invention to solve the technical problem is that：
A kind of quick roasting regeneration system of energy-saving filler cooled casting model powder, including preheating unit and roasting regeneration list
Unit, the roasting regeneration unit includes being disposed with cloth room, combustion chamber, heat exchange from top to bottom in body of heater, the body of heater
Room and sand collecting chamber, are respectively arranged with second charging aperture and main smoke discharging pipe at the top of the body of heater, the bottom of the body of heater is set
There is the second discharging opening, the valve that shakes out be provided with second discharging opening,
The preheating unit is arranged at the outside of roasting regeneration unit；
The preheating unit includes First Heat Exchanger, and first charging aperture, first are respectively arranged with the First Heat Exchanger
Discharging opening, the second smoke inlet and the second outlet flue；
The first charging aperture is connected with old sand automatic feeding device, first discharging opening be arranged at roasting regeneration list
Second charging aperture in unit is connected；
The heat-exchanging chamber includes one-level heat-exchanging chamber and two grades of heat-exchanging chambers, and the one-level heat-exchanging chamber is arranged at described
Two grades of tops of heat-exchanging chamber；
The first heat exchange box is provided with the one-level heat-exchanging chamber, installed in furnace interior, first heat exchange box includes
Plectane, first time plectane and the first gusset plate on first, plectane, first time plectane and common group of the first gusset plate on described first
Into a hollow structure for circle, the second air inlet is provided with first gusset plate, plectane and described on described first
It is correspondingly arranged on first time plectane between through hole and relative through hole and is connected by the first leakage sandpipe, plectane on described first
On be provided with the second gas outlet, the first airduct with the second air inlet insertion, described first are provided with second gas outlet
Airduct upper end is located on first on the upside of plectane and is provided with the first blast cap；
Two grades of heat-exchanging chambers include the second heat exchange box, steel ball and the second air blower, and second heat exchange box includes the
Plectane, second time plectane, the second gusset plate and sieve plate on two, second gusset plate are circular ring, second gusset
Sieve plate is disposed with border circular areas that plate is surrounded from top to bottom, plectane and second time plectane on second, wherein described the
It is correspondingly arranged between through hole and relative through hole on plectane and second time plectane on two and is connected by the second leakage sandpipe,
It is provided with the 3rd air inlet being connected with the second air blower in the second described gusset plate, is provided with plectane on described second
3rd gas outlet, is provided with the second airduct with the 3rd gas outlet insertion, the second airduct upper end on the 3rd gas outlet
On second plectane upside and be provided with the second blast cap, the steel ball is arranged at the top of the sieve plate；
The outside of the roasting regeneration unit is additionally provided with high-temperature flue gas processing unit；
The high-temperature flue gas processing unit includes the second heat exchanger and the first air blower；
The first smoke inlet, the first outlet flue, the first air inlet and the first outlet are respectively arranged with second heat exchanger
Mouthful；
First smoke inlet is connected with the main smoke discharging pipe at the top of the body of heater, first outlet flue and described first
The second smoke inlet on heat exchanger is connected；
First air inlet is connected with first air blower, first gas outlet respectively with the roasting regeneration list
The combustion chamber of unit is connected with one-level heat-exchanging chamber.
A specific embodiment of the invention, is provided with cloth cone and cloth sieve plate in the cloth room, described
Cloth cone is in cone-shaped structure positioned at the top of the cloth sieve plate, the cloth cone, and the cloth sieve plate is in inverted round platform
Shape structure, cloth cone is fixedly connected by connecting rod with body of heater, one end being relatively large in diameter of the cloth sieve plate and body of heater
It is fixedly connected, is provided with along the uniform sieve aperture of body of heater axial direction on the conical surface of the cloth cone and cloth sieve plate.
Further, less one end of diameter with diameter greater than the cloth sieve plate of the lower end of the cloth cone is straight
Footpath.
Another embodiment of the invention, the First Heat Exchanger uses superconductive heat exchanger, the superconduction
Heat exchanger includes casing and superconduction heat exchange pipe, and dividing plate is provided with the casing, and casing is divided into cold sand room and heat by the dividing plate
Air compartment, is provided with superconduction heat exchange pipe on the dividing plate, the first charging aperture and the first discharging opening are respectively arranged at cold sand room
Top and bottom, second outlet flue and the second smoke inlet are respectively arranged at the top and bottom of hot air chamber.
Further, the superconduction heat exchange pipe is arranged on the dividing plate with certain gradient, wherein relatively low one end position
In in cold sand room, one end higher is located in hot air chamber.
Another specific embodiment of the invention, second heat exchanger uses pipe heat exchanger, the tubular type
Heat exchanger includes housing, heat exchanger tube, the first smoke inlet, the first outlet flue, the first air inlet and the first gas outlet, the heat exchanger tube
One end be connected with the first air inlet, the other end of the heat exchanger tube is connected with the first gas outlet.
Another specific embodiment of the invention, is provided with several combustions on the sidewall of the furnace body of described combustion chamber
Burner, and the burner is evenly arranged on sustained height around the axis of body of heater, each burner is to obliquely downward in body of heater
Flame flame simultaneously forms vortex gas flow.
Another specific embodiment of the invention, the 1/15 to 1/5 of a diameter of body of heater internal diameter of the steel ball, institute
The stack thickness for stating steel ball is 1/3 to 2/3 of the vertical height between first heat exchange box and the second heat exchange box.
The beneficial effects of the invention are as follows：
The quick roasting regeneration system of a kind of energy-saving filler cooled casting model powder that the present invention is provided,
First, the heat of flue gas in advance puies forward rapidly the temperature of old sand after setting old sand preheater to utilize burning
Rise.
Second, by setting external box-type heat exchanger, the low-temperature flue gas that will be obtained by heat transfer process are preheated with old sand
Device is connected, and old sand is carried out to be each led into combustion chamber and one-level heat with heat treatment, the heating air obtained by heat transfer process
In switch room, be conducive to keeping the temperature in combustion chamber, save fuel, the sufficient profit of high-temperature flue gas for enabling roaster to discharge
With.
3rd, by setting two grades of heat-exchanging chambers, air is blasted from two grades of heat-exchanging chambers of stove inner bottom part, on the one hand to falling
Sand grains play stirring and lifting effect, make at heat-exchanging chamber lower planes position sand grains holding fluidized state, make particle it
Between phase mutual friction, reduce roasting after particle surface residue, on the other hand, by two grades of heat-exchanging chambers, steel ball is set,
Play a part of to stop that sand falls during sand falls, so as to slow down the speed of sand whereabouts, to contain after roasting
There is heat exchange and provide the sufficient time in the sand grains of amount of residual heat, be also beneficial to reduce the temperature of discharging sand grains with the air for blasting
Degree.
Brief description of the drawings
Fig. 1 is loop structure schematic diagram of the invention；
Fig. 2 is the structural representation of superconductive heat exchanger in preheating unit of the present invention；
Fig. 3 is the structural representation of pipe heat exchanger in high-temperature flue gas processing unit of the present invention；
Fig. 4 is the structural representation in roasting regeneration unit of the present invention；
Fig. 5 is the top view of roaster；
Fig. 6 is the arrangement schematic diagram of burner on roaster；
Fig. 7 is the position relationship and structural representation of the first heat exchange box and the second heat exchange box in roaster；
Fig. 8 is the top view of Fig. 7；
Fig. 9 is the A-A sectional views in Fig. 8；
Figure 10 is the position relationship and structural representation of cloth cone and cloth sieve plate in roaster cloth room；；
Figure 11 is the structural representation of superconductive heat exchanger in embodiment two.
In figure：1- superconductive heat exchangers, 11- casings, 12- dividing plates, the cold sand rooms of 13-, 14- hot air chambers, 15- superconduction heat exchange pipes,
16- first charging apertures, the discharging openings of 17- first, the smoke inlets of 18- second, the outlet flues of 19- second, 2- bodies of heater, 21- inner thermal insulating layers,
22- external thermal insulations, 23- second charging apertures, 24- branch exhaust openings, 25- branch smoke discharging pipes, the main smoke discharging pipes of 26-, 3- clothes room,
31- clothes are bored, 311- connecting rods, 32- cloth sieve plates, 4- combustion chambers, 41- burners, 411- fuel inlets, 412- combustion-supporting gases
Import, 5- one-level heat-exchanging chambers, the heat exchange box of 51- first, plectane on 511- first, first time plectane of 512-, the gussets of 513- first
Plate, the air inlets of 514- second, the leakage sandpipes of 515- first, the gas outlets of 516- second, the airducts of 517- first, the blast caps of 518- first, 6-
Two grades of heat-exchanging chambers, the heat exchange box of 61- second, plectane on 611- second, second time plectane of 612-, the gusset plates of 613- second, 614-
3rd air inlet, the leakage sandpipes of 615- second, the gas outlets of 616- the 3rd, the airducts of 617- second, the blast caps of 618- second, 619- sieve plates,
62- steel balls, the air blowers of 63- second, 7- sand collecting chamber, the discharging openings of 71- second, 72- shakes out valve, 8- pipe heat exchangers, 81- shells
Body, 82- heat exchanger tubes, the smoke inlets of 83- first, the outlet flues of 84- first, the air inlets of 85- first, the gas outlets of 86- first, 9- first is roused
Blower fan.
Specific embodiment
Embodiment one：
As shown in figure 1, the described quick roasting regeneration system of a kind of energy-saving filler cooled casting model powder includes that preheating is single
Unit, roasting regeneration unit and high-temperature flue gas processing unit.
As shown in Fig. 2 described preheating unit includes First Heat Exchanger, the First Heat Exchanger uses superconductive heat exchanger 1,
The superconductive heat exchanger 1 includes casing 11 and superconduction heat exchange pipe 15.Dividing plate 12 is provided with the casing 11, the dividing plate 12 will
Space in casing 11 is divided into two parts, and a part is cold sand room 13, and another part is hot air chamber 14.Set on the dividing plate 12
Superconduction heat exchange pipe 15 is equipped with, the superconduction heat exchange pipe 15 is arranged on dividing plate 12 with certain gradient, wherein relatively low one end position
In in cold sand room 13, one end higher is located in hot air chamber 14.The upper end of the cold sand room 13 is provided with first charging aperture 16, institute
State first charging aperture 16 to be connected with old sand automatic feeding device, the lower end of the cold sand room 13 is provided with the first discharging opening 17, institute
The first discharging opening 17 is stated to be connected with roaster by taper sand trap 10.The bottom of the hot air chamber 14 is provided with the second smoke inlet
18, top is provided with the second outlet flue 19.So, after temperature flue gas higher enters hot air chamber 14 from the second smoke inlet 18,
Cold sand room 13 is transferred heat to by superconduction heat exchange pipe 15, so that the temperature in cold sand room 13 is improved, in the mistake that old sand falls
Heat exchange is carried out in journey, so as to improve the temperature of old sand, the pre-heat treatment is carried out to old sand, improve the efficiency of roasting regeneration.In order to
Keep the temperature in superconductive heat exchanger 1, it is to avoid thermal loss, the outside of described casing 11 is coated with what is be made up of insulation material
Heat-insulation layer.
As shown in figure 4, described roasting regeneration unit includes roaster, described roaster includes body of heater 2, the body of heater
Cloth room 3, combustion chamber 4,5, two grades of heat-exchanging chambers 6 of one-level heat-exchanging chamber and sand collecting chamber 7 are disposed with from top to bottom in 2.Institute
It is the tapered centre in two ends in the tubular structure of cylinder to state body of heater 2, and described centre in the part of cylinder inside and
Outside is respectively arranged with inner thermal insulating layer 21 and external thermal insulation 22, and described inner thermal insulating layer 21 and the material of external thermal insulation 22 are insulation
Refractory material.As shown in figure 5, the centre position at the top of the body of heater 2 is provided with second charging aperture 23, the second charging aperture 23
It is connected with the first discharging opening 17 of superconductive heat exchanger 1 by taper sand trap 10.The top of the body of heater 2 is additionally provided with four branch
Exhaust opening 24, described four branch exhaust openings 24 composition one is square, and the branch exhaust opening 24 is connected with branch smoke discharging pipe 25, and
Each branch smoke discharging pipe 25 is connected with main smoke discharging pipe 26.
As shown in figure 4, cloth is provided with described cloth room 3 bores 31 and cloth sieve plate 32, described cloth bores 31
In the top of cloth sieve plate 32.The cloth cone 31 is fixedly connected by connecting rod 33 with the cone-shaped top surface on the top of body of heater 2, described
Cloth sieve plate 32 is fixedly connected with the top on the body of heater face of cylinder.As shown in Figure 10, the cloth cone 31 is in cone-shaped structure, described
Cloth sieve plate 32 is in be provided with along body of heater in inverted round table-like structure, and the conical surface of cloth cone 31 and cloth sieve plate 32
The uniform sieve aperture of axial direction.The old sand for so being entered into body of heater 2 by second charging aperture 23 falls down cloth cone first
On 31, the old sand bored beyond 31 diameters positioned at cloth is dropped down onto on Cloth sieve plate 32 by under, because cloth bores 31 and cloth sieve plate 32
On be evenly equipped with sieve aperture, therefore old sand when combustion chamber 4 is had just enter into by the even drop down effect with raindrop type so that sufficiently profit
With the space in combustion chamber 4, the treatment effect of roaster is improved.In order to prevent the old sand beyond cloth 31 diameters of cone direct
Under drop down onto combustion chamber 4, the diameter of less one end of the diameter with diameter greater than cloth sieve plate 32 of the lower end of the cloth cone 31.
As shown in figure 4, the lower section of described cloth room 3 sets combuster 4, on the sidewall of the furnace body of described combustion chamber 4
Several burners 41 are provided with, the quantity in the present embodiment is three, as shown in fig. 6, three burners 41 are in sustained height
On be evenly arranged around the axis of body of heater 2, and each burner 41 and body of heater 2 horizontal direction and vertical direction in certain
Angle, makes course of work Flame be sprayed towards the obliquely downward in body of heater 2, and this is conducive to flame in combustion to produce vortex
Effect, uniform heating, it will help the Multidirectional motion of sand grains promotes organic layer reaction in surface to peel off.Each described burner
Fuel inlet 411 and combustion-supporting gas import 412 are provided with 41, ratio adjusting valve are provided with described fuel inlet 411,
Electric butterfly valve is provided with the combustion-supporting gas import 412.
As shown in figure 4, the lower section of described combustion chamber 4 is provided with one-level heat-exchanging chamber 5, described one-level heat-exchanging chamber 5
Inside it is provided with the first heat exchange box 51.As shown in Figure 7, Figure 8 and Figure 9, described first heat exchange box 51 include plectane 511 on first,
First time gusset plate 513 of plectane 512 and first, plectane 511, first time gusset plate 513 of plectane 512 and first on described first
A hollow structure for circle is collectively constituted, the second air inlet 514 has been provided with the first described gusset plate 513, it is described
The pipeline of body of heater 2 is provided through on second air inlet 514.As shown in figure 9, on described first plectane 511 and first time circle
The through hole of plectane 511 and first time relative through hole of plectane 512 on through hole, and described first is correspondingly arranged on plate 512 to lead to
The first leakage sandpipe 515 is crossed to be connected.It is additionally provided with the second gas outlet 516 on described first on plectane 511, described second goes out
The first airduct 517 is provided with gas port 516, in order to avoid sand is changed from the first airduct 517 during whereabouts into first
In hot tank 51, the first blast cap 518 is provided with the first described airduct 517.
As shown in figure 4, the lower section of the one-level heat-exchanging chamber 5 is provided with two grades of heat-exchanging chambers 6, two grades of heat-exchanging chambers
6 include the second heat exchange box 61, the air blower 63 of steel ball 62 and second.As shown in figures 7 and 9, second heat exchange box includes second
Upper plectane 611, second time plectane 612, the second gusset plate 613 and sieve plate 619, second gusset plate 613 are circular ring,
The and of plectane 611 on sieve plate 619, second is disposed with from top to bottom in the border circular areas that second gusset plate 613 is surrounded
Second time plectane 612.On wherein described second through hole, and described are correspondingly arranged on plectane 611 and second time plectane 612
Plectane 611 is connected with second time relative through hole of plectane 612 by the second leakage sandpipe 615 on two.The second described gusset
The 3rd air inlet 614 is provided with plate 613, the 3rd described air inlet 614 is by the pipeline through body of heater 2 and the second air blower
63 are connected.The 3rd gas outlet 616 is additionally provided with described second on plectane 611, be provided with the 3rd gas outlet 616 with
Second airduct 617 of the 3rd gas outlet insertion, in order to avoid falling in sand during fall into the second airduct 617, it is described
The second blast cap 618 is provided with second airduct 617.The blast cap 618 of second airduct 617 and second is respectively positioned on sieve plate 619 and
On two between plectane 611.The steel ball 62 is arranged at the top of the sieve plate 619 of the second heat exchange box 61.So mainly there are three aspects
Effect, first, during sand falls by one-level heat-exchanging chamber 5, the air blasted from two grades of heat-exchanging chambers 6 is passing through
On first heat exchange box 51 of one-level heat-exchanging chamber 5 first leakage sandpipe 515 when, can to by first leakage sandpipe 515 fall sand
Son play a part of stir and lift, the sand at the lower planes position of one-level heat-exchanging chamber 5 is held fluidized state, make particle it
Between phase mutual friction, reduce roasting after particle surface residue；Second, because secondary heat-exchanging chamber 6 is maintained at barotropic state,
Under the drive of the effect of increasing of air, the sand grain surface residue that partial frictional comes off will rise with hot-air, enter
Combustion chamber 4 is further burnt, and is finally taken away by smoke discharging pipe；3rd, steel ball is set by two grades of heat-exchanging chambers, in sand
Play a part of to stop that sand falls during whereabouts, so as to slow down the speed of sand whereabouts, to contain residual heat after roasting
There is heat exchange and provide the sufficient time in the sand grains of amount and the air that blasts, and then reduce the temperature of sand, with facilitate storage and
Transport.In order to avoid sand at the packing area by two grades of heat-exchanging chambers 6 excessive velocities or excessively slow, the diameter of the steel ball 62
It is the 1/15 to 1/5 of body of heater internal diameter, it is preferred that the 1/10 of a diameter of body of heater internal diameter of the steel ball 62, the heap of the steel ball 62
Folded thickness is 1/3 to 2/3 of the vertical height between the heat exchange box 61 of first heat exchange box 51 and second, the preferred steel ball
62 stack thickness is 1/2 of the vertical height between the heat exchange box 61 of first heat exchange box 51 and second.
As shown in figure 4, the lower section of two grades of heat-exchanging chambers 6 is sand collecting chamber 7, what the sand after regenerating cooling fell
In sand collecting chamber 7, the bottom of the sand collecting chamber 7 is provided with the second discharging opening 71, and the valve 72 that shakes out is provided with the discharging opening 71.
As shown in figure 1, the described heat exchanger of high-temperature flue gas processing unit second and the first air blower 9, second heat exchange
Device uses pipe heat exchanger 8.As shown in figure 3, described pipe heat exchanger 8 includes housing 81, heat exchanger tube 82, the first smoke inlet
83rd, the first outlet flue 84, the first air inlet 85 and the first gas outlet 86.First air blower 9 by the first air inlet 85 with
Heat exchanger tube 82 is connected.
As shown in figure 1, the phase of main smoke discharging pipe 26 on the first smoke inlet 83 of the pipe heat exchanger 8 and roaster top
Even, the first outlet flue 84 of the pipe heat exchanger 8 is connected with the second smoke inlet 18 of the superconductive heat exchanger 1 of preheating unit, institute
The second outlet flue 19 for stating superconductive heat exchanger 1 is connected with exhaust treatment system.86 points of first gas outlet of the pipe heat exchanger 8
It is not connected with the second air inlet 514 on the heat exchange box 51 of combustion-supporting gas import 412 and first on burner 41.
During work, by the high-temperature flue gas that the main smoke discharging pipe 26 in the top of body of heater 2 is discharged, by pipeline from pipe heat exchanger 8
The first smoke inlet 83 enter pipe heat exchanger 8, at the same time, the first air blower 9 in the heat conducting pipe 82 of pipe heat exchanger 8 lead to
Enter air, carry out heat exchange between high-temperature flue gas and air in pipe heat exchanger 8, then low-temperature flue gas are from pipe heat exchanger 8
The first outlet flue 84 discharge, hot-air is discharged from the first gas outlet 86 of pipe heat exchanger 8.It is described from pipe heat exchanger 8
The discharge low-temperature flue gas of the first outlet flue 84 enter the second smoke inlet 18 of superconductive heat exchanger 1 by pipeline, and in superconduction heat exchange
Heat exchange being carried out with old sand in device 1, the pre-heat treatment being carried out to old sand, the flue gas in the hot air chamber 14 of final superconductive heat exchanger 1 is through the
Two outlet flue 19 enters exhaust treatment system after discharging.Discharge hot-air in described the first gas outlet 86 from pipe heat exchanger 8
Combustion chamber 4 and one-level heat-exchanging chamber 5 are respectively enterd by pipeline, the hot-air for being passed through one-level heat-exchanging chamber 5 is changed further through first
The second gas outlet 516 in hot tank 51 enters combustion chamber 4.Be passed through the hot-air of one-level heat-exchanging chamber 5, on the one hand can with pass through
The sand that first leakage sandpipe 515 falls carries out heat exchange, is further improved while lowering the temperature to sand and is passed through one-level heat
The temperature of the hot-air of switch room 5, is conducive to keeping the temperature in combustion chamber 4, saves fuel；On the other hand, due to from two grades
The air that heat-exchanging chamber 6 enters finally is also intended to be discharged from main smoke discharging pipe 26 by combustion chamber 4, in order to keep in combustion chamber 4
Temperature, the hot-air being passed through in one-level heat-exchanging chamber 5 can also carry out hot friendship with the air entered from two grades of heat-exchanging chambers 6
Change, so as to improve the temperature of the air entered from two grades of heat-exchanging chambers 6.
Embodiment two：
As shown in figure 11, described superconductive heat exchanger uses double-layer box body, including internal box and outer case, the internal box
It is in direction structure with outer case, the space formed between the internal box and outer case is hot air chamber 14, the internal box
Internal space is cold sand room 13, and the superconduction heat exchange pipe 15 is installed on internal box, and the superconduction heat exchange pipe 15 one end
In cold sand room 13, the other end is located in hot air chamber 14.Remaining structure is with embodiment one.
Embodiment three：
The top of the sieve plate 619 of second heat exchange box 61 is provided with pipe, sieve aperture is provided with the pipe, in sand
During whereabouts, slowly fall by the sand hole on each pipe that stacking is placed, so as to be blasted with there is the second air blower 63
Air carry out heat exchange, reduce the temperature of sand.In order to avoid sand fall excessive velocities or excessively slow, the cylinder it is straight
Footpath is the 1/15 to 1/5 of body of heater internal diameter, it is preferred that the 1/10 of a diameter of body of heater internal diameter of the pipe, the stacking of the pipe
Thickness is 1/3 to 2/3 of the vertical height between the heat exchange box 61 of first heat exchange box 51 and second, the preferred pipe
Stack thickness is 1/2 of the vertical height between the heat exchange box 61 of first heat exchange box 51 and second.The same embodiment of remaining structure
One.
Claims (8)
1. a kind of quick roasting regeneration system of energy-saving filler cooled casting model powder, including preheating unit and roasting regeneration unit,
The roasting regeneration unit includes body of heater, be disposed with from top to bottom in the body of heater cloth room, combustion chamber, heat-exchanging chamber and
Sand collecting chamber, is respectively arranged with second charging aperture and main smoke discharging pipe at the top of the body of heater, the bottom of the body of heater is provided with
Two discharging openings, the valve that shakes out is provided with second discharging opening, it is characterised in that：
The preheating unit is arranged at the outside of roasting regeneration unit；
The preheating unit includes First Heat Exchanger, and first charging aperture, the first discharging are respectively arranged with the First Heat Exchanger
Mouth, the second smoke inlet and the second outlet flue；
The first charging aperture is connected with old sand automatic feeding device, first discharging opening be arranged on roasting regeneration unit
Second charging aperture be connected；
The heat-exchanging chamber includes one-level heat-exchanging chamber and two grades of heat-exchanging chambers, and the one-level heat-exchanging chamber is arranged at described two grades
The top of heat-exchanging chamber；
The first heat exchange box is provided with the one-level heat-exchanging chamber, installed in furnace interior, first heat exchange box includes first
Upper plectane, first time plectane and the first gusset plate, plectane, first time plectane and the first gusset plate are collectively constituted on described first
One hollow structure of circle, is provided with the second air inlet in first gusset plate, plectane and described first on described first
It is correspondingly arranged on lower plectane between through hole and relative through hole and is connected by the first leakage sandpipe, is set on plectane on described first
The second gas outlet is equipped with, the first airduct with the second air inlet insertion, first airduct are provided with second gas outlet
Upper end is located on first on the upside of plectane and is provided with the first blast cap；
Two grades of heat-exchanging chambers include the second heat exchange box, steel ball and the second air blower, and second heat exchange box is included on second
Plectane, second time plectane, the second gusset plate and sieve plate, second gusset plate are circular ring, the second gusset plate institute
Sieve plate is disposed with the border circular areas that surround from top to bottom, plectane and second time plectane on second, wherein on described second
It is correspondingly arranged between through hole and relative through hole on plectane and second time plectane and is connected by the second leakage sandpipe, it is described
The second gusset plate on be provided with the 3rd air inlet being connected with the second air blower, be provided with the 3rd on plectane on described second
Gas outlet, is provided with the second airduct with the 3rd gas outlet insertion on the 3rd gas outlet, the second airduct upper end is located at
On second plectane upside and be provided with the second blast cap, the steel ball is arranged at the top of the sieve plate；
The outside of the roasting regeneration unit is additionally provided with high-temperature flue gas processing unit；
The high-temperature flue gas processing unit includes the second heat exchanger and the first air blower；
The first smoke inlet, the first outlet flue, the first air inlet and the first gas outlet are respectively arranged with second heat exchanger；
First smoke inlet is connected with the main smoke discharging pipe at the top of the body of heater, and first outlet flue and described first exchanges heat
The second smoke inlet on device is connected；
First air inlet is connected with first air blower, first gas outlet respectively with the roasting regeneration unit
Combustion chamber is connected with one-level heat-exchanging chamber.
2. a kind of energy-saving quick roasting regeneration system of filler cooled casting model powder according to claim 1, its feature exists
In：Cloth cone and cloth sieve plate are provided with the cloth room, the cloth cone is positioned at the top of the cloth sieve plate, the cloth
Material cone is in cone-shaped structure, and the cloth sieve plate is in inverted round table-like structure, and the cloth cone is consolidated by connecting rod with body of heater
Fixed connection, one end being relatively large in diameter of the cloth sieve plate is fixedly connected with body of heater, the conical surface of the cloth cone and cloth sieve plate
On be provided with along the uniform sieve aperture of body of heater axial direction.
3. a kind of energy-saving quick roasting regeneration system of filler cooled casting model powder according to claim 2, its feature exists
In：The diameter of less one end of diameter with diameter greater than the cloth sieve plate of the lower end of the cloth cone.
4. a kind of energy-saving quick roasting regeneration system of filler cooled casting model powder according to claim 1, its feature exists
In：The First Heat Exchanger uses superconductive heat exchanger, and the superconductive heat exchanger includes casing and superconduction heat exchange pipe, in the casing
Dividing plate is provided with, casing is divided into cold sand room and hot air chamber by the dividing plate, superconduction heat exchange pipe, described are provided with the dividing plate
One charging aperture and the first discharging opening are respectively arranged at the top and bottom of cold sand room, second outlet flue and the second smoke inlet point
The top and bottom of hot air chamber are not arranged at.
5. a kind of energy-saving quick roasting regeneration system of filler cooled casting model powder according to claim 4, its feature exists
In：The superconduction heat exchange pipe is arranged on the dividing plate with certain gradient, wherein relatively low one end is located in cold sand room, it is higher
One end be located at hot air chamber in.
6. a kind of energy-saving quick roasting regeneration system of filler cooled casting model powder according to claim 1, its feature exists
In：Second heat exchanger uses pipe heat exchanger, and the pipe heat exchanger includes housing, heat exchanger tube, the first smoke inlet, first
Outlet flue, the first air inlet and the first gas outlet, one end of the heat exchanger tube are connected with the first air inlet, the heat exchanger tube it is another
One end is connected with the first gas outlet.
7. a kind of energy-saving quick roasting regeneration system of filler cooled casting model powder according to claim 1, its feature exists
In：Be provided with several burners on the sidewall of the furnace body of described combustion chamber, and the burner on sustained height around stove
The axis of body is evenly arranged, and each burner is to flame flame in obliquely downward in body of heater and forms vortex gas flow.
8. a kind of energy-saving quick roasting regeneration system of filler cooled casting model powder according to claim 1, its feature exists
In：The 1/15 to 1/5 of a diameter of body of heater internal diameter of the steel ball, the stack thickness of the steel ball is first heat exchange box and the
1/3 to 2/3 of vertical height between two heat exchange box.
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| CN106825395B (en) * | 2017-04-25 | 2018-12-21 | 重庆钢铁(集团)有限责任公司 | Cavityless casting molding sand sequencing batch type circulating cooling processing method |
| CN109434014B (en) * | 2018-11-15 | 2023-11-07 | 重庆长江造型材料（集团）股份有限公司 | Waste sand roasting system |
| CN109341349B (en) * | 2018-11-15 | 2023-12-05 | 重庆长江造型材料（集团）股份有限公司 | Roasting furnace |
| CN110328327B (en) * | 2019-08-08 | 2020-08-28 | 江苏鹏飞集团股份有限公司 | Device for regenerating and casting used sand by heat carrier heating method |
| CN112404344B (en) * | 2020-11-06 | 2022-08-30 | 南通大学 | Casting waste sand regeneration device and method based on heat carrier partition heat transfer |
| CN114480778B (en) * | 2020-11-12 | 2023-05-09 | 江苏集萃冶金技术研究院有限公司 | Converter flue gas sample gas dry pretreatment method based on thermal state sampling |
| 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 |
| CN114543505A (en) * | 2022-01-27 | 2022-05-27 | 广西兰科资源再生利用有限公司 | Novel vertical energy-saving roasting furnace |
| CN115415477B (en) * | 2022-11-03 | 2023-03-24 | 托普工业(江苏)有限公司 | 3D prints casting sand mould recovery processing system |
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| JPH11285779A (en) * | 1998-03-31 | 1999-10-19 | Osaka Gas Co Ltd | Method for reproducing molding sand |
| CN2684967Y (en) * | 2004-01-07 | 2005-03-16 | 朱旭东 | Sand heating device for casting |
| JP4904297B2 (en) * | 2008-02-29 | 2012-03-28 | 株式会社松井工業 | Foundry sand recycling equipment |
| CN101862808B (en) * | 2010-06-02 | 2011-11-16 | 无锡锡南铸造机械有限公司 | Waste molding sand or core sand regenerating equipment |
| CN205464173U (en) * | 2016-01-08 | 2016-08-17 | 山东金璞新材料有限公司 | Quick calcination regeneration system of energy -saving filler cooled casting sand |
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