CN105562597A - Fast roasting regeneration system of energy-saving type indirectly-cooled foundry sand - Google Patents
Fast roasting regeneration system of energy-saving type indirectly-cooled foundry sand Download PDFInfo
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- CN105562597A CN105562597A CN201610015474.2A CN201610015474A CN105562597A CN 105562597 A CN105562597 A CN 105562597A CN 201610015474 A CN201610015474 A CN 201610015474A CN 105562597 A CN105562597 A CN 105562597A
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- heat exchanger
- plectane
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- heat
- sandpipe
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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 fast roasting regeneration system of energy-saving type indirectly-cooled foundry sand comprises a preheating unit, a roasting regeneration unit and a high-temperature flue gas treatment unit. The roasting regeneration unit comprises a furnace. A distribution chamber, a combustion chamber, a primary heat exchange chamber, a secondary heat exchange chamber and a sand collection chamber are sequentially arranged in the furnace from top to bottom. A second feeding opening and a main flue gas exhaust pipeline are arranged at the top of the furnace. A second discharging opening is formed in the bottom of the furnace. A first feeding opening in the preheating unit is connected with an automatic used sand feeding device, and a first discharging opening is connected with the second feeding opening. A first flue gas inlet in the high-temperature flue gas treatment unit is connected with the main flue gas exhaust pipeline, a first flue gas outlet is connected with a second flue gas inlet, a first air inlet is connected with a first air blower, and a first air outlet is connected with the combustion chamber and the primary heat exchange chamber of the roasting regeneration unit. In the process of achieving regeneration of the foundry sand, energy in the regeneration process is fully utilized, the work efficiency of regeneration equipment is improved, and energy waste is avoided.
Description
Technical field
The present invention relates to a kind of recycling cast waste sand system, especially a kind of quick roasting regeneration system of high temperature of energy-saving casting model powder, belongs to Casting Equipment technical field.
Background technology
Along with the continuous lifting of China's machinery industry manufacture level, require more and more higher to the surface quality of continuous castings of casting industry, the usage ratio covering the Novel molding sand such as sand and resin sand is more and more higher.After product casting, namely 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, fundamentally prevents waste molding sand to the pollution problem of environment.
The key technical problem of recycling cast waste sand reuse is, realizes effective separation of two class materials, and namely the material measuring greatly cementation of molding sand matrix and molding sand surface residual departs from mutually, as various resin material, waterglass etc.
At present, the renovation process of cast waste sand mainly contains mechanical method of reproduction and thermal reclamation, wherein thermal reclamation be cast waste sand is heated, overlay film or the organic matter such as resin that sand grain surface parcel is removed in calcination, regeneration effect is better.But in thermal reclamation process, cast waste sand enters rapid temperature increases after sand preparing machine continuously, sand grain surface organic matter is separated and removes, then cooling enters regenerative process rapidly.But after being through cooling regenerative process, the reclaimed sand that obtains often has higher temperature, produces energy waste on the one hand, on the other hand to the conveying of reclaimed sand, store and cause difficulty.
In order to solve the problem of energy waste, application number be 2010101972375 Chinese patent application disclose a kind of waste molding sand or core reclaim equiment, heat convection technology is combined with boiling fluidisation heating technique by this equipment, should in the thermal reclamation of waste and old type (core) sand.Outlet flue by roaster top is communicated with fluidising chamber by flue, the high-temperature flue gas of discharging from the outlet flue on roaster top enters in fluidising chamber by flue, for the fluidisation thermal regeneration of sand grains, thus heat energy is fully utilized, flue gas loss reduces.Although utilize this kind of method that the heat of part high-temperature flue gas can be made to be utilized, also there are some shortcomings.First, because the gas entered in fluidising chamber is the flue gas after burning of discharging above equipment, temperature is very high, and the sand grains through roasting below equipment therefore can be made to be difficult to cooling, thus the collection and transport regenerating sand grains is made troubles, affect the regeneration efficiency of equipment; Secondly, the flue gas after burning also exists the low problem of oxygen content, cannot meet the needs of burning, makes the fuel that sprays in burner cannot Thorough combustion, so not only can cause energy waste, also can to environment.
The problem that the collection of the regeneration sand grains that a kind of waste molding sand provided for the application number Chinese patent that is 2010101972375 or core reclaim equiment exist and transport are made troubles, application number be 201210360433.9 Chinese patent provide a kind of boiling type fluo solid roaster, this roaster is fixedly installed a remittance air chamber in the below of body of heater, the roof of remittance air chamber is fixedly installed airduct, the lower end of described airduct is arranged in remittance air chamber, and the upper end of airduct is positioned at heat exchange zone and is provided with blast cap.Sand grains in practical process after roasting, through carrying out heat exchange with the air in airduct, on the one hand, can accelerate the cooling of sand grains; On the other hand, make the air in airduct conjugate hot-air and enter in burner hearth, help the burning of old sand in burner hearth.But in the program, the high-temperature flue gas through roasting is still directly discharged in air, does not make full use of the heat in high-temperature flue gas, causes the waste of the energy.
Summary of the invention
For the problem of the energy waste existed in existing cast waste sand thermal reclamation process and conveying, storage difficulty, the invention provides the quick roasting regeneration system of a kind of energy-saving indirect-cooling casting model powder, the surface organic matter of cast waste sand is fully peeled off, realize the regenerative process of molding sand, simultaneously, make full use of the energy of regenerative process, improve the operating efficiency of reclaim equiment, avoid energy waste.
The present invention solves the technical scheme that its technical problem takes:
The quick roasting regeneration system of a kind of energy-saving indirect-cooling casting model powder, comprise preheating unit and roasting regeneration unit, described roasting regeneration unit comprises body of heater, cloth room, combustion chamber, heat-exchanging chamber and sand collecting chamber is disposed with from top to bottom in described body of heater, the top of described body of heater is respectively arranged with the second charging aperture and main smoke discharging pipe, the bottom of described body of heater is provided with the second discharging opening, and described second discharging opening is provided with the valve that shakes out
Described preheating unit is arranged at the outside of roasting regeneration unit;
Described preheating unit comprises First Heat Exchanger, described First Heat Exchanger is respectively arranged with the first charging aperture, the first discharging opening, second enters mouth and the second outlet flue;
Described first charging aperture is connected with old sand automatic feeding device, and described first discharging opening is connected with the second charging aperture be arranged on roasting regeneration unit;
Described heat-exchanging chamber comprises one-level heat-exchanging chamber and secondary heat-exchanging chamber, and described one-level heat-exchanging chamber is arranged at the top of described secondary heat-exchanging chamber;
Heat exchange box is provided with in described one-level heat-exchanging chamber, be arranged on furnace interior, described heat exchange box comprises plectane on first, first time plectane and the first gusset plate, plectane on described first, first time plectane and the first gusset plate constitute a circular hollow structure jointly, described first gusset plate is provided with the second air inlet, on described first on plectane and described first time plectane corresponding be provided with through hole and leak sandpipe by first between relative through hole be connected, and the first lower end of leaking sandpipe protrudes from first time plectane, on described first, plectane is provided with the second gas outlet, described second gas outlet is provided with first airduct through with the second air inlet, described first airduct upper end is positioned on the upside of plectane and is provided with the first blast cap,
Described secondary heat-exchanging chamber comprises indirect-cooling heat exchanger and the second air blast, described indirect-cooling heat exchanger comprises plectane on second, second time plectane and the second gusset plate, plectane on described second, second time plectane and the second gusset plate constitute remittance air chamber jointly, on described second, on plectane and second time plectane, correspondence is provided with through hole and relatively leaks sandpipe by second between two through hole and is connected, it is one-to-one relationship that described second leakage sandpipe and described first leaks sandpipe, described corresponding the first leakage sandpipe and second leaks between sandpipe and is provided with the 3rd leakage sandpipe, described 3rd lower end of leaking sandpipe is fixedly connected with plectane on second, the unsettled setting in upper end of described 3rd leakage sandpipe, and described first one end protruding from first time plectane of leaking sandpipe is inserted in the 3rd leakage sandpipe, the second described gusset plate is provided with the 3rd air inlet, described 3rd air inlet is connected with the second air blast, plectane is provided with the 3rd gas outlet on described second,
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;
Described second heat exchanger is respectively arranged with first and enters mouth, the first outlet flue, the first air inlet and the first gas outlet;
Described first enters mouth is connected with the main smoke discharging pipe at described body of heater top, and described first outlet flue enters mouth with second on described First Heat Exchanger and is connected;
Described first air inlet is connected with described first air blast, and described first gas outlet is connected with one-level heat-exchanging chamber with the combustion chamber of described roasting unit respectively.
According to a specific embodiment of the present invention, described cloth indoor are provided with cloth cone and cloth sieve plate, described cloth cone is positioned at the top of described cloth sieve plate, described cloth cone is in cone-shaped structure, described cloth sieve plate is inverted round table-like structure, described cloth cone is fixedly connected with body of heater by connecting rod, and one end that the diameter of described cloth sieve plate is larger is fixedly connected with body of heater, the conical surface of described cloth cone and cloth sieve plate is provided with the uniform sieve aperture along body of heater axial direction.
Further, the diameter of the lower end of described cloth cone is greater than the diameter of the less one end of the diameter of described cloth sieve plate.
According to another detailed description of the invention of the present invention, described First Heat Exchanger adopts superconductive heat exchanger, described superconductive heat exchanger comprises casing and superconduction heat exchange pipe, dividing plate is provided with in described casing, casing is divided into cold sand room and hot air chamber by described dividing plate, described dividing plate is provided with superconduction heat exchange pipe, described first charging aperture and the first discharging opening are arranged at the top and bottom of cold sand room respectively, and described second enters mouth and first enters the top and bottom that mouth is arranged at hot air chamber respectively.
Further, described superconduction heat exchange pipe is arranged on described dividing plate with certain gradient, and it is indoor that wherein lower one end is positioned at cold sand, and higher one end is positioned at hot air chamber.
According to another detailed description of the invention of the present invention, described second heat exchanger adopts pipe heat exchanger, described pipe heat exchanger comprises housing, heat exchanger tube, first enters mouth, the first outlet flue, the first air inlet and the first gas outlet, one end of described heat exchanger tube is connected with the first air inlet, and the other end of described heat exchanger tube is connected with the first gas outlet.
According to another detailed description of the invention of the present invention, the sidewall of the furnace body of described combustion chamber is provided with several burners, and the axis of described burner around body of heater on sustained height is evenly arranged, flame flame below each burner is oblique in body of heater also forms vortex gas flow.
The invention has the beneficial effects as follows:
The quick roasting regeneration system of one provided by the invention energy-saving airduct cooled casting model powder,
The first, the heat of the rear flue gas of burning can be utilized the temperature of old sand to be promoted rapidly in advance by arranging old sand preheater.
Second, by arranging external box-type heat exchanger, the low-temperature flue gas obtained through heat transfer process is communicated with old sand preheater, old sand is carried out and heat treatment, the hot-air that adds obtained through heat transfer process is passed in combustion chamber and one-level heat-exchanging chamber respectively, be conducive to keeping the temperature in combustion chamber, save fuel, the high-temperature flue gas that roaster is discharged is able to sufficient utilization.
3rd, by arranging secondary heat-exchanging chamber, air is blasted from stove inner bottom part secondary heat-exchanging chamber, sand grains is made slowly to fall by air drag in high-temperature area on the one hand, extend the reaction time of surface organic matter in high-temperature area, on the other hand, the hot-air repeatedly turned to and sand grains are in Convection states, promote that particle moves mutually, friction, and under the effect of the positive pressure air of a cold house, the residue that sand grain surface comes off will rise with air, cross and burn further into combustion chamber, finally taken away by smoke discharging pipe, thus ensure that the surface smoothness that whereabouts sand grains has had.
Accompanying drawing explanation
Fig. 1 is loop structure schematic diagram of the present 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 position relationship and the structural representation of one-level heat-exchanging chamber and secondary heat-exchanging chamber in roaster;
Fig. 8 is the top view of Fig. 7;
Fig. 9 is the A-A sectional view in Fig. 8;
Figure 10 is the structure for amplifying schematic diagram of part A in Fig. 9;
Figure 11 is position relationship and the 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 exchanger, 11-casing, 12-dividing plate, the cold sand room of 13-, 14-hot air chamber, 15-superconduction heat exchange pipe, 16-first charging aperture, 17-first discharging opening, 18-second enters mouth, 19-second outlet flue, 2-body of heater, 21-inner thermal insulating layer, 22-external thermal insulation, 23-second charging aperture, 24-props up exhaust opening, 25-props up smoke discharging pipe, the main smoke discharging pipe of 26-, 3-cloth room, 31-cloth is bored, 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, plectane on 511-first, 512-first time plectane, 513-first gusset plate, 514-second air inlet, 515-first leaks sandpipe, 516-second gas outlet, 517-first airduct, 518-first blast cap, 6-secondary heat-exchanging chamber, 61-indirect-cooling heat exchanger, plectane on 611-second, 612-second time plectane, 613-second gusset plate, 614-the 3rd air inlet, 615-second leaks sandpipe, 616-the 3rd gas outlet, 617-the 3rd leaks sandpipe, 62-second air blast, 7-sand collecting chamber, 71-second discharging opening, 72-shakes out valve, 8-pipe heat exchanger, 81-housing, 82-heat exchanger tube, 83-first enters mouth, 84-first outlet flue, 85-first air inlet, 86-first gas outlet, 9-first air blast.
Detailed description of the invention
Embodiment one:
As shown in Figure 1, the quick roasting regeneration system of described one energy-saving indirect-cooling casting model powder comprises 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 superconductive heat exchanger 1, and described superconductive heat exchanger 1 comprises casing 11 and superconduction heat exchange pipe 15.Be provided with dividing plate 12 in described casing 11, the compartition in casing 11 is two parts by described dividing plate 12, and a part is cold sand room 13, and another part is hot air chamber 14.Described dividing plate 12 is provided with superconduction heat exchange pipe 15, and described superconduction heat exchange pipe 15 is arranged on dividing plate 12 with certain gradient, and wherein lower one end is positioned at cold sand room 13, and higher one end is positioned at hot air chamber 14.The upper end of described cold sand room 13 is provided with the first charging aperture 16, and described first charging aperture 16 is connected with old sand automatic feeding device, and the lower end of described cold sand room 13 is provided with the first discharging opening 17, and described first discharging opening 17 is connected with roaster by taper sand trap 10.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, when the higher flue gas of temperature enters after mouth 18 enters hot air chamber 14 from second, by superconduction heat exchange pipe 15, heat is delivered to cold sand room 13, thus the temperature improved in cold sand room 13, heat exchange is carried out in the process that old sand falls, thus improve the temperature of old sand, the pre-heat treatment is carried out to old sand, improves the efficiency of roasting regeneration.In order to keep the temperature in superconductive heat exchanger 1, avoid thermal loss, the outside of described casing 11 is coated with the heat-insulation layer be made up of insulation material.
As shown in Figure 4, described roasting regeneration unit comprises roaster, and described roaster comprises body of heater 2, is disposed with cloth room 3, combustion chamber 4, one-level heat-exchanging chamber 5, secondary heat-exchanging chamber 6 and sand collecting chamber 7 in described body of heater 2 from top to bottom.Described body of heater 2 is tapered centre, two ends is cylindrical tubular structure, and described centre is the inside and outside of cylindrical part is respectively arranged with inner thermal insulating layer 21 and external thermal insulation 22, described inner thermal insulating layer 21 and the material of external thermal insulation 22 are heat insulating refractory material.As shown in Figure 5, the centre position at described body of heater 2 top is provided with the second charging aperture 23, and described second charging aperture 23 is connected with the first discharging opening 17 of superconductive heat exchanger 1 by taper sand trap 10.The top of described body of heater 2 is also provided with four exhaust openings 24, described four exhaust openings 24 form one square, described exhaust opening 24 is connected with a smoke discharging pipe 25, and each smoke discharging pipe 25 is all connected with main smoke discharging pipe 26.
As shown in Figure 4, be provided with cloth cone 31 and cloth sieve plate 32 in described cloth room 3, described cloth cone 31 is positioned at the top of cloth sieve plate 32.Described cloth cone 31 is fixedly connected with by the cone-shaped top surface of connecting rod 33 with body of heater 2 top, and described cloth sieve plate 32 is fixedly connected with the top on the body of heater face of cylinder.As shown in figure 11, described cloth cone 31 is in cone-shaped structure, and described cloth sieve plate 32 in inverted round table-like structure, and the conical surface of described cloth cone 31 and cloth sieve plate 32 is provided with the uniform sieve aperture along body of heater axial direction.First the old sand entered in body of heater 2 through the second charging aperture 23 like this drops on cloth cone 31, being positioned at the cloth old sand of boring beyond 31 diameters will fall on cloth sieve plate 32, due to cloth cone 31 and cloth sieve plate 32 being evenly equipped with sieve aperture, therefore old sand will have the even drop down effect of raindrop type when just entering combustion chamber 4, thus utilize the space in combustion chamber 4 fully, improve the treatment effect of roaster.The old sand of boring beyond 31 diameters to prevent from being positioned at cloth directly falls to combustion chamber 4, and the diameter of the lower end of described cloth cone 31 is greater than the diameter of the less one end of the diameter of cloth sieve plate 32.
As shown in Figure 4, the below of described cloth room 3 is provided with combustion chamber 4, the sidewall of the furnace body of described combustion chamber 4 is provided with several burners 41, 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 the horizontal direction of each burner 41 and body of heater 2 and vertical direction are all in certain angle, course of work Flame is sprayed towards the oblique below in body of heater 2, this is conducive to flame in combustion and produces eddy current effect, homogeneous heating, the Multidirectional motion of sand grains will be contributed to, promote that surperficial organic layer reacts to peel off.Each described burner 41 is provided with fuel inlet 411 and combustion-supporting gas import 412, described fuel inlet 411 is provided with ratio adjusting valve, described combustion-supporting gas import 412 is provided with electric butterfly valve.
As shown in Figure 4, the below of described combustion chamber 4 is provided with one-level heat-exchanging chamber 5, is provided with heat exchange box 51 in described one-level heat-exchanging chamber 5.As shown in Figure 7, Figure 8 and Figure 9, described heat exchange box 51 comprises plectane 511, first time plectane 512 and the first gusset plate 513 on first, on described first, plectane 511, first time plectane 512 and the first gusset plate 513 constitute a circular hollow structure jointly, the first described gusset plate 513 is provided with the second air inlet 514, the second described air inlet 514 is provided through the pipeline of body of heater 2.As shown in Figure 9, on described first, on plectane 511 and first time plectane 512, correspondence is provided with through hole, and on described first, plectane 511 is connected by the first leakage sandpipe 515 with the relative through hole of first time plectane 512, and the first lower end of leaking sandpipe 515 protrudes from first time plectane 512.Plectane 511 is also provided with the second gas outlet 516 on described first, the second described gas outlet 516 is provided with the first airduct 517, in order to avoid sand enters in heat exchange box 51 from the first airduct 517 in the process fallen, the first described airduct 517 is 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 secondary heat-exchanging chamber 6 comprises indirect-cooling heat exchanger 61 and the second air blast 62.Described indirect-cooling heat exchanger 61 comprises plectane 611, second time plectane 612 and the second gusset plate 613 on second, on described second, plectane 611, second time plectane 612 and the second gusset plate 613 constitute remittance air chamber jointly, are provided with the second leakage sandpipe 615 in described remittance air chamber.As shown in Figure 9, on described second, on plectane 611 and second time plectane 612, correspondence is provided with through hole, on described second, the relative through hole of plectane 611 and second time plectane 612 leaks sandpipe 615 by second and is connected, and described second leaks sandpipe 615 to leak sandpipe 515 with first of heat exchange box 51 in one-level heat-exchanging chamber 5 be one-to-one relationship.As shown in Figure 9 and Figure 10, be provided with the 3rd between described first leakage sandpipe 515 and the second leakage sandpipe 615 and leak sandpipe 617, described 3rd lower end of leaking sandpipe 617 is fixedly connected with plectane on second 611, the unsettled setting in upper end of described 3rd leakage sandpipe 617, and described first one end protruding from first time plectane 512 of leaking sandpipe 515 is inserted in the 3rd leakage sandpipe 617.The second described gusset plate 613 is provided with the 3rd air inlet 614, the 3rd described air inlet 614 is provided with pipeline, described pipeline is connected with the second air blast through after body of heater 2, plectane 611 is provided with the 3rd gas outlet 616 on described second.Mainly contain three aspect effects like this, the first, the sand grains of high temperature leaks in the process fallen in sandpipe 617 the 3rd, by pipeline material and air generation heat exchange, thus can reduce the temperature of shaking out, and stores and transport to facilitate, second, as shown in Figure 10, the direction of arrow is air motion direction, as seen from the figure, the air blasted by the second air blast 62 is in the process moved upward, when moving to the below of heat exchange box 51, be subject to the stop of heat exchange box 51 first times plectanes 512, air can be forced to turn to, and enter between the 3rd leakage sandpipe 617 and the first leakage sandpipe 515, and move downward, lower end due to body of heater 2 is closed, therefore when the lower ending opening place of sandpipe 515 is leaked in arrival first, air can turn to again and move upward along the first leakage sandpipe 515, sand grains is slowly fallen by air drag upwards in high-temperature area, extend the reaction time of surface organic matter at high-temperature area, 3rd, the air repeatedly turned to and sand grains are in Convection states, promote that particle mutually moves, rubs, and under the effect of positive pressure air, the residue that sand grain surface comes off will rise with air, cross and burn further into combustion chamber 4, finally taken away by smoke discharging pipe, thus ensure that the surface smoothness that whereabouts sand grains has had.
As shown in Figure 4, the below of described secondary heat-exchanging chamber 6 is sand collecting chamber 7, and in the sand collecting chamber 7 that the sand after regeneration cooling falls, the bottom of described sand collecting chamber 7 is provided with the second discharging opening 71, and described discharging opening 71 is provided with the valve 72 that shakes out.
As shown in Figure 1, described high-temperature flue gas processing unit second heat exchanger and the first air blast 9, described second heat exchanger adopts pipe heat exchanger 8.As shown in Figure 3, described pipe heat exchanger 8 comprises housing 81, heat exchanger tube 82, first enters mouth 83, first outlet flue 84, first air inlet 85 and the first gas outlet 86.Described 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 enters mouth 83 and is connected with the main smoke discharging pipe 26 on roaster top, first outlet flue 84 of described pipe heat exchanger 8 enters mouth 18 with second of the superconductive heat exchanger 1 of preheating unit and is connected, and the second outlet flue 19 of described superconductive heat exchanger 1 is connected with exhaust treatment system.First gas outlet 86 of described pipe heat exchanger 8 is connected with the second air inlet 514 on heat exchange box 51 with the combustion-supporting gas import 412 on burner 41 respectively.
During work, the high-temperature flue gas that main smoke discharging pipe 26 is discharged through body of heater 2 top, enter mouth 83 by pipeline from first of pipe heat exchanger 8 and enter pipe heat exchanger 8, meanwhile, first air blast 9 passes into air in the heat pipe 82 of pipe heat exchanger 8, in pipe heat exchanger 8, carry out heat exchange between high-temperature flue gas and air, then low-temperature flue gas is discharged from the first outlet flue 84 of pipe heat exchanger 8, and hot-air is discharged from the first gas outlet 86 of pipe heat exchanger 8.Described discharge that low-temperature flue gas enters superconductive heat exchanger 1 by pipeline from the first outlet flue 84 of pipe heat exchanger 8 second enter mouth 18, and heat exchange is carried out with old sand in superconductive heat exchanger 1, carry out the pre-heat treatment to old sand, the flue gas in final superconductive heat exchanger 1 hot air chamber 14 enters exhaust treatment system after the second outlet flue 19 is discharged.Described discharge hot-air from the first gas outlet 86 of pipe heat exchanger 8 and enter combustion chamber 4 and one-level heat-exchanging chamber 5 respectively by pipeline, the hot-air passing into one-level heat-exchanging chamber 5 enters combustion chamber 4 by the second gas outlet 516 on heat exchange box 51 again.Pass into the hot-air of one-level heat-exchanging chamber 5, on the one hand can with leak by first the sand that sandpipe 515 falls and carry out heat exchange, while sand is lowered the temperature, improve the temperature of the hot-air passing into one-level heat-exchanging chamber 5 further, be conducive to keeping the temperature in combustion chamber 4, save fuel; On the other hand, because the air entered from secondary heat-exchanging chamber 6 is also finally will discharge from main smoke discharging pipe 26 through combustion chamber 4, in order to keep the temperature in combustion chamber 4, the hot-air passed in one-level heat-exchanging chamber 5 can also carry out heat exchange with the air entered from secondary heat-exchanging chamber 6, thus improves the temperature of the air entered from secondary heat-exchanging chamber 6.
Embodiment two:
As shown in figure 12, described superconductive heat exchanger adopts double-layer box body, comprise internal box and outer case, described internal box and outer case are all in direction structure, the space formed between described internal box and outer case is hot air chamber 14, and the space of described internal box inside is cold sand room 13, and described superconduction heat exchange pipe 15 is installed on internal box, and one end of described superconduction heat exchange pipe 15 is positioned at cold sand room 13, the other end is positioned at hot air chamber 14.All the other structures are with embodiment one.
Claims (7)
1. the quick roasting regeneration system of energy-saving indirect-cooling casting model powder, comprise preheating unit and roasting regeneration unit, described roasting regeneration unit comprises body of heater, cloth room, combustion chamber, heat-exchanging chamber and sand collecting chamber is disposed with from top to bottom in described body of heater, the top of described body of heater is respectively arranged with the second charging aperture and main smoke discharging pipe, the bottom of described body of heater is provided with the second discharging opening, described second discharging opening is provided 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, described First Heat Exchanger is respectively arranged with the first charging aperture, the first discharging opening, second enters mouth and the second outlet flue;
Described first charging aperture is connected with old sand automatic feeding device, and described first discharging opening is connected with the second charging aperture be arranged on roasting regeneration unit;
Described heat-exchanging chamber comprises one-level heat-exchanging chamber and secondary heat-exchanging chamber, and described one-level heat-exchanging chamber is arranged at the top of described secondary heat-exchanging chamber;
Heat exchange box is provided with in described one-level heat-exchanging chamber, be arranged on furnace interior, described heat exchange box comprises plectane on first, first time plectane and the first gusset plate, plectane on described first, first time plectane and the first gusset plate constitute a circular hollow structure jointly, described first gusset plate is provided with the second air inlet, on described first on plectane and described first time plectane corresponding be provided with through hole and leak sandpipe by first between relative through hole be connected, and the first lower end of leaking sandpipe protrudes from first time plectane, on described first, plectane is provided with the second gas outlet, described second gas outlet is provided with first airduct through with the second air inlet, described first airduct upper end to be positioned on the upside of plectane and to be provided with the first blast cap,
Described secondary heat-exchanging chamber comprises indirect-cooling heat exchanger and the second air blast, described indirect-cooling heat exchanger comprises plectane on second, second time plectane and the second gusset plate, plectane on described second, second time plectane and the second gusset plate constitute remittance air chamber jointly, on described second, on plectane and second time plectane, correspondence is provided with through hole and relatively leaks sandpipe by second between two through hole and is connected, it is one-to-one relationship that described second leakage sandpipe and described first leaks sandpipe, described corresponding the first leakage sandpipe and second leaks between sandpipe and is provided with the 3rd leakage sandpipe, described 3rd lower end of leaking sandpipe is fixedly connected with plectane on second, the unsettled setting in upper end of described 3rd leakage sandpipe, and described first one end protruding from first time plectane of leaking sandpipe is inserted in the 3rd leakage sandpipe, the second described gusset plate is provided with the 3rd air inlet, described 3rd air inlet is connected with the second air blast, plectane is provided with the 3rd gas outlet on described second,
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;
Described second heat exchanger is respectively arranged with first and enters mouth, the first outlet flue, the first air inlet and the first gas outlet;
Described first enters mouth is connected with the main smoke discharging pipe at described body of heater top, and described first outlet flue enters mouth with second on described First Heat Exchanger and is connected;
Described first air inlet is connected with described first air blast, and described first gas outlet is connected with one-level heat-exchanging chamber with the combustion chamber of described roasting unit respectively.
2. the quick roasting regeneration system of one according to claim 1 energy-saving indirect-cooling casting model powder, it is characterized in that: described cloth indoor are provided with cloth cone and cloth sieve plate, described cloth cone is positioned at the top of described cloth sieve plate, described cloth cone is in cone-shaped structure, described cloth sieve plate is inverted round table-like structure, described cloth cone is fixedly connected with body of heater by connecting rod, one end that the diameter of described cloth sieve plate is larger is fixedly connected with body of heater, the conical surface of described cloth cone and cloth sieve plate is provided with the uniform sieve aperture along body of heater axial direction.
3. the quick roasting regeneration system of one according to claim 2 energy-saving indirect-cooling casting model powder, is characterized in that: the diameter of the lower end of described cloth cone is greater than the diameter of the less one end of the diameter of described cloth sieve plate.
4. the quick roasting regeneration system of one according to claim 1 energy-saving indirect-cooling casting model powder, it is characterized in that: described First Heat Exchanger adopts superconductive heat exchanger, described superconductive heat exchanger comprises casing and superconduction heat exchange pipe, dividing plate is provided with in described casing, casing is divided into cold sand room and hot air chamber by described dividing plate, described dividing plate is provided with superconduction heat exchange pipe, described first charging aperture and the first discharging opening are arranged at the top and bottom of cold sand room respectively, and described second enters mouth and first enters the top and bottom that mouth is arranged at hot air chamber respectively.
5. the quick roasting regeneration system of one according to claim 4 energy-saving indirect-cooling casting model powder, it is characterized in that: described superconduction heat exchange pipe is arranged on described dividing plate with certain gradient, it is indoor that wherein lower one end is positioned at cold sand, and higher one end is positioned at hot air chamber.
6. the quick roasting regeneration system of one according to claim 1 energy-saving indirect-cooling casting model powder, it is characterized in that: described second heat exchanger adopts pipe heat exchanger, described pipe heat exchanger comprises housing, heat exchanger tube, first enters mouth, the first outlet flue, the first air inlet and the first gas outlet, one end of described heat exchanger tube 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 system of one according to claim 1 energy-saving indirect-cooling casting model powder, it is characterized in that: the sidewall of the furnace body of described combustion chamber is provided with several burners, and the axis of described burner around body of heater on sustained height is evenly arranged, flame flame below each burner is oblique in body of heater also forms vortex gas flow.
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Effective date of registration: 20230703 Address after: 256216 50 meters north of Village Committee Road, Lanzhili Village, Mingji Town, Zouping City, Binzhou, Shandong Province Patentee after: Shandong Xingang New Material Co.,Ltd. Address before: 255311 East Suli Village, Wangcun Town, Zhoucun District, Zibo City, Shandong Province Patentee before: SHANDONG JINPU NEW MATERIAL Co.,Ltd. |