CN105562597B - A kind of quick roasting regeneration system of energy-saving indirect-cooling casting model powder - Google Patents
A kind of quick roasting regeneration system of energy-saving indirect-cooling casting model powder Download PDFInfo
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- CN105562597B CN105562597B CN201610015474.2A CN201610015474A CN105562597B CN 105562597 B CN105562597 B CN 105562597B CN 201610015474 A CN201610015474 A CN 201610015474A CN 105562597 B CN105562597 B CN 105562597B
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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
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Abstract
A kind of quick roasting regeneration system of energy-saving indirect-cooling 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 body of heater from top to bottom, 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
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 is quickly calcined again
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 of casting industry is required increasingly
The use ratio more and more higher of the novel molding sands such as height, precoated 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 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 continuously entered and is brought rapidly up after sand preparing machine, is separated sand grain surface organic matter and is removed, so
Rapid cooling enters regenerative process afterwards.But the reclaimed sand obtained after supercooling regenerative process often has higher temperature,
On the one hand energy waste is produced, conveying, storage on the other hand to reclaimed sand cause difficulty.
The problem of in order to solve 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.The outlet flue on roaster top is connected by flue with fluidising chamber, from going out for roaster top
The high-temperature flue gas of mouth discharge is entered in 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 such a method is utilized,
There is also some shortcomings.Firstly, since into the flue gas after burning that the gas in fluidising chamber is discharge above equipment,
Temperature is very high, therefore the sand grains by roasting below equipment can be caused to be difficult to cool down, so that collection and fortune to regenerating sand grains
It is defeated to make troubles, influence the regeneration efficiency of equipment；Secondly, the flue gas after burning has the problem of oxygen content is low, nothing
The need for method meets burning so that the fuel sprayed in burner can not 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 transport make troubles the problem of, the Chinese patent of Application No. 201210360433.9 is provided
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 passes through carries out heat exchange with the air in airduct, 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, the high-temperature flue gas by roasting is still directly discharged in air, is not made 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 ask
Topic, the present invention provides a kind of energy-saving quick roasting regeneration system of indirect-cooling casting model powder, fills the surface organic matter of cast waste sand
Divide and peel off, realize the regenerative process of molding sand, meanwhile, the energy of regenerative process is made full use of, the operating efficiency of generating apparatus is improved again,
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 indirect-cooling casting model powder, including preheating unit and roasting regeneration unit, institute
Stating roasting regeneration unit includes being disposed with cloth room, combustion chamber, heat-exchanging chamber and collection from top to bottom in body of heater, the body of heater
Second charging aperture and main smoke discharging pipe are respectively arranged with the top of sand room, the body of heater, the bottom of the body of heater is provided with second
The valve that shakes out is provided with discharging opening, second discharging opening,
The preheating unit is arranged at the outside of roasting regeneration unit；
The preheating unit includes being respectively arranged with first charging aperture, first on First Heat Exchanger, 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, and first discharging opening is with being arranged at roasting regeneration list
Second charging aperture in member 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
The top of two grades of heat-exchanging chambers；
Heat exchange box is provided with the one-level heat-exchanging chamber, installed in furnace interior, the heat exchange box includes circle on first
Plate, first time plectane and the first gusset plate, plectane, first time plectane and the first gusset plate have collectively constituted one on described first
Plectane and first time circle on the second air inlet, described first are provided with circular hollow structure, first gusset plate
It is correspondingly arranged between through hole and relative through hole and is connected by the first sand leakage pipe on plate, and the lower end of the first sand leakage pipe is protruded
It is provided with to enter with second in being provided with plectane on first time plectane, described first on second gas outlet, second gas outlet
First airduct of gas port insertion, the first airduct upper end, which is located on the upside of upper plectane, is provided with the first blast cap；
Two grades of heat-exchanging chambers include indirect-cooling heat exchanger and the second air blower, and described indirect-cooling heat exchanger includes the
Plectane, second time plectane and the second gusset plate on two, plectane, second time plectane and common group of the second gusset plate on described second
It is correspondingly arranged on into remittance air chamber, on described second between through hole and relative two through hole on plectane and second time plectane by the
Two sand leakage pipes are connected, and the second sand leakage pipe and the first sand leakage pipe are one-to-one relationship, and described corresponding the
Plectane on three leakages sandpipe, the lower end and second of the three leakages sandpipe is provided between one sand leakage pipe and the second sand leakage pipe to consolidate
Fixed connection, the upper end of the three leakages sandpipe is vacantly set, and one end for protruding from first time plectane of the first sand leakage pipe
Insert in three leakages sandpipe, the 3rd air inlet, the 3rd air inlet and the second air blast are provided with the second described gusset plate
Machine is connected, and the 3rd gas outlet is provided with plectane on described second；
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 member is connected with one-level heat-exchanging chamber.
According to the specific embodiment of the present invention, cloth cone and cloth sieve plate are provided with the cloth room, it is 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, the 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, the uniform sieve aperture along body of heater axial direction is provided with the conical surface of the cloth cone and cloth sieve plate.
Further, the diameter of the lower end of the cloth cone is more than the straight of less one end of diameter of the cloth sieve plate
Footpath.
According to the another embodiment of the present invention, the First Heat Exchanger uses superconductive heat exchanger, the superconduction
Heat exchanger includes being provided with dividing plate in casing and superconduction heat exchange pipe, the casing, and casing is divided into cold sand room and heat by the dividing plate
Superconduction heat exchange pipe is provided with air compartment, 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, higher one end is located in hot air chamber.
According to another embodiment of the present 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.
According to another embodiment of the present invention, several combustions are provided with 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 obliquely downward into body of heater
Flame flame simultaneously forms vortex gas flow.
The beneficial effects of the invention are as follows：
A kind of energy-saving quick roasting regeneration system of airduct cooled casting model powder that the present invention is provided,
First, by setting old sand preheater in advance can carry the temperature of old sand rapidly using the heat of flue gas after burning
Rise.
Second, the external box-type heat exchanger by setting preheats the low-temperature flue gas obtained by heat transfer process and old sand
Device is connected, and old sand is carried out with being heat-treated, and the heating air obtained by heat transfer process is each led into combustion chamber and one-level heat
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 makes sand grains
Slowly fallen by air drag in high-temperature area, reaction time of the extension surface organic matter in high-temperature area, the opposing party
Face, the hot-air repeatedly turned to is in Convection states with sand grains, promotes particle mutually to move, rub, and in the malleation of a cold house
In the presence of air, the residue that sand grain surface comes off will rise with air, cross combustion chamber and further burn, finally quilt
Smoke discharging pipe is taken away, so as to ensure that the surface smoothness that whereabouts sand grains has had.
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 one-level heat-exchanging chamber and two grades of heat-exchanging chambers in roaster；
Fig. 8 is Fig. 7 top view；
Fig. 9 is the A-A sectional views in Fig. 8；
Figure 10 is the mplifying structure schematic diagram of part A in Fig. 9；
Figure 11 is the position relationship and structural representation of cloth cone and cloth sieve plate in roaster cloth room；
Figure 12 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
Plectane on import, 5- one-level heat-exchanging chambers, 51- heat exchange box, 511- first, first time plectane of 512-, the gusset plates of 513- first,
The air inlets of 514- second, 515- the first sand leakage pipes, the gas outlets of 516- second, the airducts of 517- first, the blast caps of 518- first, bis- grades of 6-
Plectane on heat-exchanging chamber, 61- indirect-cooling heat exchangers, 611- second, second time plectane of 612-, the gusset plates of 613- second, 614-
Three air inlets, 615- the second sand leakage pipes, the gas outlets of 616- the 3rd, 617- three leakages sandpipes, the air blowers of 62- second, 7- sand collecting chamber,
The discharging openings of 71- second, 72- shakes out valve, 8- pipe heat exchangers, 81- housings, 82- heat exchanger tubes, the smoke inlets of 83- first, 84-
One outlet flue, the air inlets of 85- first, the gas outlets of 86- first, the air blowers of 9- first.
Embodiment
Embodiment one：
As shown in figure 1, a kind of described energy-saving quick roasting regeneration system of indirect-cooling casting model powder includes preheating unit, roasting
Burn 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, higher one end 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 with old sand automatic feeding device to be connected, 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 by taper sand trap 10 with roaster to be connected.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 the higher flue gas of temperature 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, the mistake fallen in old sand
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, the efficiency of roasting regeneration is improved.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, one-level heat-exchanging chamber 5, two grades of heat-exchanging chambers 6 and sand collecting chamber 7 are disposed with 2 from top to bottom.Institute
State the tubular structure that body of heater 2 is in cylinder for the tapered centre in two ends, 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 body of heater 2 is provided with second charging aperture 23, the second charging aperture 23
It is connected by taper sand trap 10 with the first discharging opening 17 of superconductive heat exchanger 1.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, being provided with cloth cone 31 and cloth sieve plate 32 in described cloth room 3, described cloth bores 31
In the top of cloth sieve plate 32.The cloth cone 31 is fixedly connected by connecting rod 311 with the cone-shaped top surface on the top of body of heater 2, institute
The top that cloth sieve plate 32 is stated with the body of heater face of cylinder is fixedly connected.As shown in figure 11, the cloth cone 31 is in cone-shaped structure, institute
It is in be provided with inverted round table-like structure, and the conical surface of cloth cone 31 and cloth sieve plate 32 along stove to state cloth sieve plate 32
The uniform sieve aperture of body axial direction.The old sand so entered by second charging aperture 23 in body of heater 2 falls on cloth down first
On cone 31, the old sand bored positioned at cloth beyond 31 diameters is dropped down onto by under on Cloth sieve plate 32, due to cloth cone 31 and cloth sieve plate
Be evenly equipped with sieve aperture on 32, thus old sand when having just enter into combustion chamber 4 by the even drop down effect with raindrop type so that sufficiently
Using 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 straight
Connect down and drop down onto combustion chamber 4, the diameter of the lower end of the cloth cone 31 is more than the diameter of less one end of diameter of cloth sieve plate 32.
As shown in figure 4, the lower section of described cloth room 3 is set on combuster 4, the sidewall of the furnace body of described combustion chamber 4
The quantity being provided with several burners 41, the present embodiment is three, as shown in fig. 6, three burners 41 are in sustained height
The upper axis around body of heater 2 is evenly arranged, and the horizontal direction and vertical direction of each burner 41 and body of heater 2 are in certain
Angle, makes course of work Flame towards the obliquely downward injection in body of heater 2, this is conducive to flame generation vortex in combustion
Effect, uniform heating, it will help the Multidirectional motion of sand grains promotes organic layer reaction in surface to peel off.Each described burner
It is provided with 41 in fuel inlet 411 and combustion-supporting gas import 412, described fuel inlet 411 and is provided with ratio adjusting valve,
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 heat exchange box 51.As shown in Figure 7, Figure 8 and Figure 9, described heat exchange box 51 includes plectane 511 on first, first time circle
The gusset plate 513 of plate 512 and first, plectane 511, first time gusset plate 513 of plectane 512 and first are collectively constituted on described first
The second air inlet 514, the second described air inlet are provided with one circular hollow structure, the first described gusset plate 513
The pipeline of body of heater 2 is provided through on mouth 514.As shown in figure 9, right on plectane 511 and first time plectane 512 on described first
The relative through hole that plectane 511 and first time plectane 512 on through hole, and described first should be provided with passes through the first sand leakage pipe 515
It is connected, and the lower end of the first sand leakage pipe 515 protrudes from first time plectane 512.It is additionally provided with described first on plectane 511
The first airduct 517 is provided with second gas outlet 516, the second described gas outlet 516, in order to avoid sand is in the process of whereabouts
In from the first airduct 517 enter heat exchange box 51 in, be provided with the first blast cap 518 on 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 air blower 62 of indirect-cooling heat exchanger 61 and second.Described indirect-cooling heat exchanger 61 includes plectane 611, second on second
The lower gusset plate 613 of plectane 612 and second, plectane 611, second time gusset plate 613 of plectane 612 and second are common on described second
Constitute in remittance air chamber, the remittance air chamber and be provided with the second sand leakage pipe 615.As shown in figure 9, the He of plectane 611 on described second
The relative through hole that plectane 611 and second time plectane 612 on through hole, described second are correspondingly arranged on second time plectane 612 leads to
The second sand leakage pipe 615 is crossed to be connected, and the first sand leakage of the second sand leakage pipe 615 and heat exchange box 51 in one-level heat-exchanging chamber 5
Pipe 515 is one-to-one relationship.As shown in Figure 9 and Figure 10, it is all provided between the first sand leakage pipe 515 and the second sand leakage pipe 615
Three leakages sandpipe 617 is equipped with, the lower end of the three leakages sandpipe 617 is fixedly connected with plectane on second 611, the 3rd sand leakage
The upper end of pipe 617 is vacantly set, and one end insertion three leakages for protruding from first time plectane 512 of the first sand leakage pipe 515
In sandpipe 617.It is provided with the 3rd air inlet 614, the 3rd described air inlet 614 and sets in the second described gusset plate 613
There is a pipeline, the pipeline is connected after passing through body of heater 2 with the second air blower, being provided with the 3rd on plectane 611 on described second goes out
Gas port 616.So mainly there are three aspects to act on, first, during the sand grains of high temperature falls in three leakages sandpipe 617, meeting
Occurs heat exchange by pipeline material and air, so that the temperature shaked out is reduced, to facilitate storage and transport；Second, such as Figure 10
Shown, the direction of arrow is air motion direction, and as seen from the figure, the air blasted by the second air blower 62 is in the mistake moved upwards
Cheng Zhong, when moving to the lower section of heat exchange box 51, by the stop of first time plectane of heat exchange box 51 512, air can be forced to turn to,
And enter between the sand leakage pipe 515 of three leakages sandpipe 617 and first, and move downward, because the lower end of body of heater 2 is closing,
When therefore at the lower ending opening for reaching the first sand leakage pipe 515, air can be turned to again to move upwards along the first sand leakage pipe 515, makes
Sand grains is slowly fallen in high-temperature area by upward air drag, and extension surface organic matter is in the reaction of high-temperature area
Between；3rd, the air repeatedly turned to is in Convection states with sand grains, promotes particle mutually to move, rub, and in positive pressure air
Under effect, the residue that sand grain surface comes off will rise with air, cross combustion chamber 4 and further burn, finally be discharged fume
Pipeline is taken away, so as to ensure that the surface smoothness that whereabouts sand grains has had.
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 regeneration cooling fell
In sand collecting chamber 7, the bottom of the sand collecting chamber 7, which is provided with the second discharging opening 71, the discharging opening 71, is provided with the valve 72 that shakes out.
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 first smoke inlet 83 of the pipe heat exchanger 8 and the phase of main smoke discharging pipe 26 on 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 the first gas outlet of the pipe heat exchanger 8
It is not connected with the second air inlet 514 in the combustion-supporting gas import 412 and heat exchange box 51 on burner 41.
During work, the high-temperature flue gas discharged by the main smoke discharging pipe 26 in the top of body of heater 2, 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 into 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 is 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 first outlet flue 84 discharge low-temperature flue gas enter the second smoke inlet 18 of superconductive heat exchanger 1 by pipeline, and in superconduction heat exchange
Heat exchange is carried out with old sand in device 1, and flue gas in the pre-heat treatment, the final hot air chamber 14 of superconductive heat exchanger 1 is carried out to old sand through the
Enter exhaust treatment system after the discharge of two outlet flues 19.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 of one-level heat-exchanging chamber 5 is passed through further through heat exchange box
The second gas outlet 516 on 51 enters combustion chamber 4.The hot-air of one-level heat-exchanging chamber 5 is passed through, on the one hand can be with passing through first
The sand that sand leakage pipe 515 falls carries out heat exchange, is further improved while cooling to sand and is passed through one-level heat exchange
The temperature of the hot-air of room 5, is conducive to keeping the temperature in combustion chamber 4, saves fuel；On the other hand, due to being handed over from two grades of heat
The air for changing the entrance of room 6 is finally also intended to discharge from main smoke discharging pipe 26 by combustion chamber 4, in order to keep the temperature in combustion chamber 4
Degree, the hot-air being passed through in one-level heat-exchanging chamber 5 can also carry out heat exchange with the air entered from two grades of heat-exchanging chambers 6, from
And improve the temperature of the air entered from two grades of heat-exchanging chambers 6.
Embodiment two：
As shown in figure 12, 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 one end of the superconduction heat exchange pipe 15
In cold sand room 13, the other end is located in hot air chamber 14.Remaining structure be the same as Example one.
Claims (7)
1. a kind of quick roasting regeneration system of energy-saving indirect-cooling casting model powder, including preheating unit and roasting regeneration unit, described
Roasting regeneration unit includes being disposed with cloth room, combustion chamber, heat-exchanging chamber and collection sand in body of heater, the body of heater from top to bottom
Second charging aperture and main smoke discharging pipe are respectively arranged with the top of room, the body of heater, the bottom of the body of heater is provided with second and gone out
The valve that shakes out is provided with material mouth, second discharging opening, it is characterised in that：
The preheating unit is arranged at the outside of roasting regeneration unit；
The preheating unit includes being respectively arranged with first charging aperture, the first discharging on First Heat Exchanger, 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, and first discharging opening is with being 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；
Heat exchange box is provided with the one-level heat-exchanging chamber, installed in furnace interior, the heat exchange box includes plectane, the on first
Once plectane and the first gusset plate, plectane, first time plectane and the first gusset plate have collectively constituted a circle on described first
Hollow structure, be provided with the second air inlet, described first on plectane and first time plectane in first gusset plate
It is correspondingly arranged on through hole and is connected between relative through hole by the first sand leakage pipe, and the lower end of the first sand leakage pipe protrudes from
Once plectane, is provided with the second gas outlet, second gas outlet on described first on plectane and is provided with and the second air inlet
First airduct of insertion, the first airduct upper end is located on the upside of upper plectane and is provided with the first blast cap；
Two grades of heat-exchanging chambers include indirect-cooling heat exchanger and the second air blower, and described indirect-cooling heat exchanger is included on second
Plectane, second time plectane and the second gusset plate, plectane, second time plectane and the second gusset plate are collectively constituted on described second
Converge air chamber, be correspondingly arranged between through hole and relative two through hole and leaked by second on plectane and second time plectane on described second
Sandpipe is connected, and the second sand leakage pipe is one-to-one relationship with the first sand leakage pipe, described the first corresponding leakage
Plectane on three leakages sandpipe, the lower end and second of the three leakages sandpipe is provided between sandpipe and the second sand leakage pipe and is fixed and is connected
Connect, the upper end of the three leakages sandpipe is vacantly set, and one end insertion for protruding from first time plectane of the first sand leakage pipe
In three leakages sandpipe, the 3rd air inlet, the 3rd air inlet and the second air blower phase are provided with the second described gusset plate
Even, the 3rd gas outlet is provided with plectane on described second；
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, first outlet flue and the described first heat exchange
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 indirect-cooling casting model powder according to claim 1, it is characterised in that：Institute
State and cloth cone and cloth sieve plate are provided with cloth room, the cloth cone is positioned at the top of the cloth sieve plate, the cloth cone
In cone-shaped structure, the cloth sieve plate is in inverted round table-like structure, and the cloth cone is fixed by connecting rod with body of heater to be connected
Connect, one end being relatively large in diameter of the cloth sieve plate is fixedly connected with body of heater, on the conical surface of the cloth cone and cloth sieve plate
It is provided with the uniform sieve aperture along body of heater axial direction.
3. a kind of energy-saving quick roasting regeneration system of indirect-cooling casting model powder according to claim 2, it is characterised in that：Institute
State diameter of the diameter more than less one end of diameter of the cloth sieve plate of the lower end of cloth cone.
4. a kind of energy-saving quick roasting regeneration system of indirect-cooling casting model powder according to claim 1, it is characterised in that：Institute
State First Heat Exchanger and use superconductive heat exchanger, the superconductive heat exchanger includes setting in casing and superconduction heat exchange pipe, the casing
There is dividing plate, casing is divided on cold sand room and hot air chamber, the dividing plate by the dividing plate is provided with superconduction heat exchange pipe, and described first enters
Material mouth and the first discharging opening are respectively arranged at the top and bottom of cold sand room, and second outlet flue and the second smoke inlet are set respectively
It is placed in the top and bottom of hot air chamber.
5. a kind of energy-saving quick roasting regeneration system of indirect-cooling casting model powder according to claim 4, it is characterised in that：Institute
Superconduction heat exchange pipe is stated to be arranged on the dividing plate with certain gradient, wherein relatively low one end is located in cold sand room, higher one
End is located in hot air chamber.
6. a kind of energy-saving quick roasting regeneration system of indirect-cooling casting model powder according to claim 1, it is characterised in that：Institute
State the second heat exchanger and use pipe heat exchanger, the pipe heat exchanger includes housing, heat exchanger tube, the first smoke inlet, the first smoke
Mouth, the first air inlet and the first gas outlet, one end of the heat exchanger tube are connected with the first air inlet, the other end of the heat exchanger tube
It is connected with the first gas outlet.
7. a kind of energy-saving quick roasting regeneration system of indirect-cooling casting model powder according to claim 1, it is characterised in that：Institute
Several burners are provided with the sidewall of the furnace body for the combustion chamber stated, and the burner surrounds the axle of body of heater on sustained height
Line is evenly arranged, and each burner obliquely downward flame flame and forms vortex gas flow into body of heater.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610015474.2A CN105562597B (en) | 2016-01-08 | 2016-01-08 | A kind of quick roasting regeneration system of energy-saving indirect-cooling casting model powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610015474.2A CN105562597B (en) | 2016-01-08 | 2016-01-08 | A kind of quick roasting regeneration system of energy-saving indirect-cooling casting model powder |
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| CN105562597B true CN105562597B (en) | 2017-09-29 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5268026A (en) * | 1975-12-03 | 1977-06-06 | Daido Plant Kogyo | Old sand regenerating process |
| CN1481951A (en) * | 2003-07-14 | 2004-03-17 | 安徽省宁国市耐磨材料总厂 | Hot process regenerative apparatus for tectorial sand using for casting |
| 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 |
| CN202192208U (en) * | 2010-12-09 | 2012-04-18 | 柳州市奥凯工程机械有限公司 | Machine for regenerating, roasting and processing foundry waste sand |
| CN201950155U (en) * | 2010-12-17 | 2011-08-31 | 重庆长江造型材料（集团）有限公司 | Feeding device for casting waste sand hot method regeneration roasting furnace |
| CN102788501A (en) * | 2012-08-31 | 2012-11-21 | 无锡锡南铸造机械有限公司 | Energy-saving environment-friendly type high-temperature fluidized bed calcinator |
| CN104759586A (en) * | 2015-03-17 | 2015-07-08 | 兰文官 | Heat-preservation sand bin of used casting sand roasting furnace |
| CN205414305U (en) * | 2016-01-08 | 2016-08-03 | 山东金璞新材料有限公司 | Quick calcination regeneration system of energy -saving intercooling formula casting sand |
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