CN102125982B - Full-counterflow heat exchange two-section type casting waste sand roasting furnace - Google Patents
Full-counterflow heat exchange two-section type casting waste sand roasting furnace Download PDFInfo
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- CN102125982B CN102125982B CN 201110020516 CN201110020516A CN102125982B CN 102125982 B CN102125982 B CN 102125982B CN 201110020516 CN201110020516 CN 201110020516 CN 201110020516 A CN201110020516 A CN 201110020516A CN 102125982 B CN102125982 B CN 102125982B
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Abstract
The invention discloses a full-counterflow heat exchange two-section type casting waste sand roasting furnace which comprises an upper-section furnace body, a lower-section furnace body, a sand adding device arranged at the top of the upper-section furnace body, a sand collecting hopper arranged at the junction of the upper-section furnace body and the lower-section furnace body, a burning machine, a burner, an air inlet, a lower sand collecting hopper and a sand outlet, wherein the burning machine, the burner and the air inlet are arranged on the lower-section furnace body, and the lower sand collecting hopper and the sand outlet are arranged at the bottom of the lower-section furnace body; and a pneumatic sand separator is arranged at the upper part of the upper-section furnace body, an in-furnace heat exchange device is arranged in the lower part of the lower-section furnace body, a temperature sensor is arranged on the lower-section furnace body, or the temperature sensors are arranged on the upper-section furnace body and the lower-section furnace body respectively, and the sensed data output end is connected with a data processing system connected outside of the furnace. The full-counterflow heat exchange two-section type casting waste sand roasting furnace has the following advantages: the waste sand processing range is wider, and the production efficiency is high; the temperature of the roasting furnace is moderate, and reclaimed sand is better in quality and stable; and the heat exchange efficiency in an in-furnace system is high, the burning heat utilization of organic matters and carbon in waste sand is good, and the roasting furnace is further conductive to protecting resources and is environment-friendly.
Description
Technical field
The present invention relates to roaster, be specifically related to a kind of full countercurrent heat exchange two-part cast waste sand roaster.
Background technology
The recycling of the cast waste sand of casting industry is paid attention to by countries in the world, but because cast waste sand of a great variety, thereby make its regeneration techniques face very large challenge.Cast waste sand is to contain quartz sand or multiple ceramsite sand and multiple inorganic matter, also containing Multimetal oxide, metal alloy dust and glomeration, organic binder bond and other organic additives (mainly is various resins, curing agent, curing accelerator, plasticizer, etc.), simple substance carbon element, inorganic binder (mainly be inorganic matter and the modifier thereof of aluminium-silicon series elements, such as bauxite, kaolin, attapulgite, etc.) mixture.Therefore various physicochemical characteristics that the various mixture of this physical property has, requires the regeneration treatment technology of cast waste sand to have popularity and adaptability.Hot method treatment technology is a kind of effective technical method, and it substantially can satisfy the regeneration of resin type cast waste sand and process.But existing roaster ubiquity energy resource consumption is high, and roasting quality is restive, unstable product quality, the defective such as disposal ability is less, can not adapt to various antiquated sand kind, and labor intensity of operating staff is large, and environment is relatively poor.Therefore, improving the foundry sand quality and reducing under the prerequisite of regeneration cost, how to utilize heat energy problem, the energy problem that how to save external demand in the cast waste sand roasting process that the contained organic matter of cast waste sand and carbon element produce in roasting process, how to reduce the recycling cast waste sand process to the problem of ambient influnence, etc., be the great technological difficulties of current casting industry.
Summary of the invention
Purpose of the present invention is just under this technical need; a kind of full countercurrent heat exchange two-part cast waste sand roaster is provided; it has flame waste gas blocking-up burning zone; can satisfy the regeneration of various cast waste sands (resin sand of various coated sands or clay-bonded sand or different proportion and the mixed sand of clay sand) processes; production efficiency is high; control easily; the reclaimed sand quality is good; and can take full advantage of antiquated sand in organic matter and the heat energy that in roasting process, produces of carbon element; save the external demand energy in the roasting process, be conducive to environmental protection.
A kind of full countercurrent heat exchange two-part cast waste sand roaster of the present invention, comprise the epimere body of heater that is located by connecting on the steelframe and be located by connecting on hypomere body of heater on the base, be located at exhaust outlet and the sanding device at epimere body of heater top and add sandpipe, be located at the sand collecting hopper of epimere body of heater and hypomere body of heater junction, the combustor that is located at the hypomere upper of furnace body, the burner that is located at hypomere body of heater middle and upper part, the air inlet that is located at the hypomere lower portion of furnace body, the lower sand collecting hopper that is located at the hypomere bottom of furnace body and connected sand cooling tube and the sand export of sending, it is characterized in that:
One Pneumatic sand dividing device is located in the top of epimere body of heater and over against sanding device, and this Pneumatic sand dividing device is connected with blast pipe on being located at the epimere body of heater;
Heat-exchanger rig is located in the bottom of hypomere body of heater in one stove, heat-exchanger rig is by air compartment in this stove, the heat exchanger tube that branched lower end and the upper spacer of air compartment are connected and communicate with air compartment, branched upper end connect with the upper spacer of air compartment and form with hypomere body of heater inner chamber communicates, air compartment is passed in the lower end lower clapboard and with the sandpipe that goes out corresponding to lower sand collecting hopper; Air compartment communicates with blower fan, heat exchanger tube and go out the alternate layout of sandpipe, the upper end of every heat exchanger tube is provided with conical cowl, the lower end of every expenditure sandpipe all be located at lower sand collecting hopper on to put the sand device corresponding;
Be provided with temperature inductor at the hypomere body of heater, perhaps be respectively equipped with temperature inductor at epimere body of heater and hypomere body of heater, the induction end of temperature inductor is in the stove, and the sensed data output links to each other with the data processing and control system that stove is connected outward.
Described a kind of full countercurrent heat exchange two-part cast waste sand roaster, in described epimere body of heater, be provided with at least one group of collection/sand dividing device and be positioned at the Pneumatic sand dividing device below; Collection/sand dividing device by a sand trap that is funnel type and one and sand trap end opening over against the taper sand separator form.
Described a kind of full countercurrent heat exchange two-part cast waste sand roaster, the furnace wall of its described epimere body of heater and hypomere body of heater consist of or consist of by steel plate, insulation fibre, heat-resistance stainless steel plate from outside to inside by steel plate, insulation fibre, refractory brick from outside to inside.
Described a kind of full countercurrent heat exchange two-part cast waste sand roaster, the diameter of its described epimere body of heater be greater than the diameter of hypomere body of heater, perhaps the equal diameters of the diameter of epimere body of heater and hypomere body of heater.
Described a kind of full countercurrent heat exchange two-part cast waste sand roaster, its described epimere body of heater and hypomere body of heater directly connect as one, and perhaps are connected by flexible structure.
Described a kind of full countercurrent heat exchange two-part cast waste sand roaster, its described flexible structure is mazy hermetically-sealed construction, and namely the convex-concave structure that has of epimere body of heater lower end has the structure of the corresponding mutual chimeric formation of concaveconvex structure with hypomere body of heater upper end.Adopt this labyrinth seal structure, the airtight sealing that has, guarantee that the in-furnace sand grain does not flow out on the one hand, furnace pressure can guarantee, can also make because the upper and lower section different structural stress that join of installing of furnace diameter, make whole body of heater can in furnace temperature constantly changes, not produce new structural stress, thereby guaranteed that body of heater is more stable.
Described a kind of full countercurrent heat exchange two-part cast waste sand roaster is provided with a combustor at least on the top of hypomere body of heater, has three burners at least in the middle and upper part of hypomere body of heater.
Described a kind of full countercurrent heat exchange two-part cast waste sand roaster, the drive motors that its described sanding device comprises the gear that is located by connecting on epimere body of heater top, is connected with gear, the output shaft of gear stretches in the stove with the upper end of the universal driving shaft of the loading hopper mechanism that links and is connected, and the lower end of universal driving shaft is connected with loading hopper.
Described a kind of full countercurrent heat exchange two-part cast waste sand roaster, its described Pneumatic sand dividing device comprises the blast pipe, the remittance air chamber that communicates with blast pipe that pass epimere body of heater furnace wall, be located at the sub-sand taper seat that converges on the air chamber and be positioned at the loading hopper below, and a plurality of blast caps that are located on the sub-sand taper seat are corresponding one by one with the top a plurality of escape pipes that are located at the remittance air chamber.
The Compressed Gas that enters from blast pipe is through converging each little air chamber of air chamber, and by superincumbent a plurality of discharge pipe is installed, the blast cap above discharge pipe and the ejection that scatters acts on the cast waste sand of whereabouts again disperses it and slow whereabouts.
The present invention is compared with existing technology and has the following advantages: it is wider to process antiquated sand, and production efficiency is high; The roasting furnace temperature is moderate, reclaimed sand better quality and stable; Heat exchanger effectiveness height between system in the stove, antiquated sand organic matter and the carbon element combustion heat are made good use of, and make the energy resource consumption of ton cast waste sand than low 1～3 times of general cast waste sand thermal reclamation treatment system; Be conducive to the resources and environment protection.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the labyrinth seal structure schematic diagram of epimere body of heater and hypomere body of heater junction;
Fig. 3 is the schematic diagram of the equal invention of epimere body of heater and hypomere furnace diameter;
Fig. 4 is the schematic diagram of sanding device;
Fig. 5 is the schematic diagram of Pneumatic sand dividing device;
Fig. 6 is the schematic diagram of the heat exchanger tube of heat-exchanger rig in the stove.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Embodiment one: referring to Fig. 1, Fig. 2 and a kind of full countercurrent heat exchange two-part cast waste sand roaster shown in Figure 6 comprise the epimere body of heater 3 that is located by connecting on the steelframe 4 and the hypomere body of heater 6 that is located by connecting on the base 10, be located at exhaust outlet 2 and the sanding device 21 at epimere body of heater top and add sandpipe 1, be located at the sand collecting hopper 22 of epimere body of heater and hypomere body of heater junction, be located at three combustors 18 of hypomere upper of furnace body, be located at three burners 7 of hypomere body of heater middle and upper part, be located at the air inlet 17 of hypomere lower portion of furnace body, be located at lower sand collecting hopper 13 and connected sand cooling tube 16 and the sand export 14 of sending of hypomere bottom of furnace body;
One Pneumatic sand dividing device 20 is located in the top of epimere body of heater 3 and over against sanding device 21, and this Pneumatic sand dividing device is connected with blast pipe 20-1 on being located at the epimere body of heater;
Heat-exchanger rig is located in the bottom of hypomere body of heater 6 in one stove, heat-exchanger rig is by air compartment 9 in this stove, the heat exchanger tube 8 that branched lower end is connected with the upper spacer of air compartment and communicates with air compartment, the upper spacer of branched upper end and air compartment connect and form with hypomere body of heater inner chamber communicates, air compartment is passed in the lower end lower clapboard and with the sandpipe 11 that goes out corresponding to lower sand collecting hopper 13; Air compartment 9 communicates with blower fan, heat exchanger tube and go out the alternate layout of sandpipe, the upper end of every heat exchanger tube 8 is provided with conical cowl 23, the lower end of every expenditure sandpipe 11 all be located at lower sand collecting hopper 13 on to put sand device 12 corresponding;
Be provided with temperature inductor 24 at the hypomere body of heater, the induction end of temperature inductor is in the stove, and the sensed data output links to each other with the data processing and control system that stove is connected outward;
In described epimere body of heater 3, be provided with at least two groups of collection/sand dividing devices and be positioned at Pneumatic sand dividing device 20 below, collection/sand dividing device by a sand trap 19 that is funnel type and one and sand trap end opening over against taper sand separator 25 form;
The epimere body of heater 3 that this is routine and the furnace wall of hypomere body of heater 6 consist of by steel plate, insulation fibre, refractory brick from outside to inside, and the diameter of epimere body of heater is greater than the diameter of hypomere body of heater.Described epimere body of heater is connected by flexible structure 5 with the hypomere body of heater; Described flexible structure is mazy hermetically-sealed construction, and namely the convex-concave structure that has of epimere body of heater lower end has the structure of the corresponding mutual chimeric formation of concaveconvex structure with hypomere body of heater upper end.
The drive motors 21-1 that comprises the gear 21-2 that is located by connecting on epimere body of heater top, is connected with gear referring to sanding device shown in Figure 4 21, the output shaft of gear stretches in the stove with the upper end of the universal driving shaft 21-3 of the loading hopper mechanism that links and is connected, and the lower end of universal driving shaft is connected with loading hopper 21-4.
Comprise the blast pipe 20-1, the remittance air chamber 20-2 that communicates with blast pipe that pass epimere body of heater 3 furnace walls, be located at the sub-sand taper seat 20-3 that converges on the air chamber and be positioned at loading hopper 21-4 below referring to Pneumatic sand dividing device 20 shown in Figure 5, a plurality of blast cap 20-4 that are located on the sub-sand taper seat are corresponding one by one with the top a plurality of escape pipe 20-5 that are located at the remittance air chamber.
Embodiment two: referring to Fig. 3, the epimere body of heater 3 that this is routine and the furnace wall of hypomere body of heater 6 consist of by steel plate, insulation fibre, heat-resistance stainless steel plate from outside to inside, the equal diameters of the diameter of epimere body of heater 3 and hypomere body of heater 6, epimere body of heater and hypomere body of heater directly connect as one, be respectively equipped with temperature inductor 24 at epimere body of heater and hypomere body of heater, all the other are identical with embodiment one.Therefore the body of heater of this spline structure has heat insulation, good heat insulating, and long service life when being conducive to improve the interior heat utilization rate of stove, realizes non-maintaining.
When the present invention works, cast waste sand adds sandpipe and sentences and have certain whereabouts kinetic energy and be added into from being in the epimere body of heater, when being in the compressed air that Pneumatic sand dividing device when top and Pneumatic sand dividing device blow out, knockout meets, knockout is subject to the speed that can slow down behind the moving air opposite with falling direction and, and the little knockout of a part of sand grains diameter is just upwards held up in the overhead higher position of the conical surface on the Pneumatic sand dividing device and directly is and flies away shape in furnace inner space descends slowly and lightly sand trap to Pneumatic sand dividing device one.Because make progress the wind-force reason, the falling speed of this part knockout slows down, so that this part sand grains is by the full and uniform rapid heating of hot-air in the stove; The antiquated sand that all the other particle diameters are larger partly drops to the conical surface on more close (until dropping to) Pneumatic sand dividing device, blast cap mouth place wind-force on the conical surface on the Pneumatic sand dividing device is larger, this part knockout is upwards blown afloat, the upper conical surface at the Pneumatic sand dividing device forms the gas sand mixing shape that turbulence is seethed, the antiquated sand that rise in the upper lateral part space around the Pneumatic sand dividing device disperses to trickle down in stove space all around centered by Pneumatic sand dividing device one, fall into the sand trap of below, because the effect of sand separator, antiquated sand fully disperses in the epimere stove, the slow whereabouts that disperses, the antiquated sand that fully disperses contacts more abundant with hot-air in the stove, the heat transfer sheet area is larger, and heat exchange is more full and uniform.The antiquated sand that drops in the sand trap evenly glides along table inclined-plane in the sand trap, sentence on the upper conical surface that flows to next group sand separator under the uniform yarn curtain at sand trap conical surface end opening, the reciprocal so repeatedly sub-sand that passes through, collection sand, sub-sand, delay widely antiquated sand and fallen into the interior duration of hypomere body of heater roast area, the heat of reusing combustion product gases is by fully preheating, eliminate the moisture and the low melting point volatile materials that contain in the antiquated sand, the phenomenon of having avoided organic being carbonized and having made sand grains mutually be bonded to piece occurs, take full advantage of the high-temperature flue gas heat that roast area produces in the hypomere body of heater, improved the sand temperature that antiquated sand enters hypomere body of heater zone, making antiquated sand enter the basic ignition temperature that roasting needs in the hypomere body of heater is guaranteed, avoided hypomere body of heater internal combustion machine because furnace temperature fluctuation fluctuating frequent starting consume fuel has realized energy savings, prevent caking, guarantee the good suitable combustion material state that the antiquated sand calcination process is front.
Antiquated sand space in flexible apparatus behind epimere dropping of furnace body sub-sand enters in the hypomere body of heater, because of in the epimere body of heater by abundant preheating, through being installed on the hypomere body of heater be positioned at burner combustion mouth sectional space below the sand trap time and burner combustion flame meet, being attached to the organic matter of sand grain surface or carbon element reaches burning-point rapidly and burns, the heat that burner fuel burning provides adds the heat that organic matter that antiquated sand contains and carbon element burning produce, make temperature rising in the hypomere stove, when reaching in the stove when can complete roasting falling the contained organic matter of antiquated sand and the above temperature of carbon element, be installed in the data-signal that the temperature inductor at hypomere body of heater middle part measures and just provide data by its data sending terminal to the computer chip that is attached thereto (PLC) control system, control system can accuse when coupled burner is adjusted duty, adjust with the epimere stove join add the sand mouth add the sand state, go out the duty of the mouth that shakes out of sandpipe sand export end.Kept the interior sintering temperature of stove moderate, avoided causing that temperature continues to rise too high in the stove because heat is excessive, caused that the metal oxide Xing Cheng Er compound that contains in the antiquated sand, the phenomenon that metallic dust was sintered, formed caking occur.When being in, the state of burner closes fire not during the burning-point state, the heat that the organic matter of lighting in the antiquated sand and carbon element burning are sent maintains under the uniform temperature condition temperature in the hypomere body of heater, when furnace temperature can not be kept, in stove under the real-time observing and controlling of temperature inductor, the outer control of stove system will send regulation and control instruction to its each RACS simultaneously, and the hypomere stove is remained under the suitable reclaimed sand treatment technology state.Antiquated sand sand grains after the burning falls in the hypomere body of heater and in the space between heat exchanger tube, is piled into gradually the layer of sand that is higher than heat exchanger tube height in the stove, and the red-hot layer of sand of this floor height temperature is by the chilled air cools that blows out in heat exchanger tube air outlet blast cap.Compressed air in the heat exchanger tube comes from the blast pipe of the air compartment that links to each other with the hypomere body of heater, blast pipe links to each other with the high pressure positive blower of outside, the blast pipe of the compressed air of high pressure positive blower through linking to each other with air compartment enters air compartment, in air compartment through air rate adjustment, enter and arrive heat exchanger tube blast cap air outlet in the hypomere body of heater from the heat exchange mouth of pipe that communicates with air compartment after the pressure allotment, enter and form thermal convection current between compressed air and the heat exchanger tube inwall in the heat exchanger tube and concern and heated rapidly, make on the one hand the cooling of heat exchange tube wall, the temperature of the outer red-hot layer of sand of high temperature of heat exchanger tube is reduced, bottom the closer to heat exchanger tube, the sand temperature is lower, mouth of pipe sand temperature is relatively minimum shaking out, enter out sandpipe at this through the sand grains with the heat exchanger tube sufficient heat exchange, with go out the mouth that shakes out that sandpipe links to each other and go out to be discharged in the lower sand collecting hopper, the sand grains that enters lower sand collecting hopper has been finished the roasting regeneration process, be released to outside the roaster by putting the sand mouth, for subsequent treatment or.Aspect in addition, enter cold air in the heat exchanger tube from heat exchange tube inlet, promptly heated by convective heat exchange, progressively become the higher hot compressed air of temperature by heat exchange tube inlet to the blast cap outlet, and in the ejection of heat exchanger tube blast cap air outlet place, pass the space between the red-hot layer of sand sand grains of high temperature.Turbulence occurs because being subject to the change at random of crossing the wind passage that the space forms between sand grains in the pressure-air that enters in the layer of sand, stirs layer of sand top and is boiling rolling shape, reduces the sand temperature; Moreover; compressed air after being heated by red-hot sand grains continues to carry to the hypomere upper of furnace body; when compressed air is crossed flexible apparatus that hypomere body of heater and epimere body of heater join and is entered in the epimere furnace space; because the furnace diameter of epimere stove is greater than hypomere body of heater stove interior diameter; therefore the compressed-air actuated flow velocity that upwards flows can slow down; so that two sections interior spaces of stove form the furnace pressure minus tolerance; the state variation of system is installed in this stove; different temperature inductor image data on the hypomere body of heater; regulate and control by the control system that stove is attached thereto outward; flue gas organic in the hypomere body of heater like this and that the carbon element burning forms can relatively stay for some time in the epimere furnace space more; reduce on the one hand the not fully organic generation of the gas phase of oxidation in the flue gas; the aspect is by contacting the longer time with the new antiquated sand of lower temperature that adds the adding of sand mouth in addition; fully carry out heat exchange; reduced rapidly the temperature of the smokejack outlet flue gas that links to each other with the epimere body of heater; avoid that the exhaust opening flue gas flow rate is too fast takes away more antiquated sand dust and to the generation of environment harmful gas bioxin; energy savings is conducive to environmental protection more more.
Claims (8)
1. full countercurrent heat exchange two-part cast waste sand roaster, comprise the epimere body of heater (3) that is located by connecting on the steelframe (4) and be located by connecting on hypomere body of heater (6) on the base (10), be located at exhaust outlet (2) and the sanding device (21) at epimere body of heater top and add sandpipe (1), be located at the sand collecting hopper (22) of epimere body of heater and hypomere body of heater junction, be located at the combustor (18) of hypomere upper of furnace body, be located at the burner (7) of hypomere body of heater middle and upper part, be located at the air inlet (17) of hypomere lower portion of furnace body, be located at lower sand collecting hopper (13) and connected sand cooling tube (16) and the sand export (14) of sending of hypomere bottom of furnace body, it is characterized in that:
One Pneumatic sand dividing device (20) is located in the top of epimere body of heater (3) and over against sanding device (21), and this Pneumatic sand dividing device is connected with blast pipe on being located at the epimere body of heater;
Heat-exchanger rig is located in the bottom of hypomere body of heater (6) in one stove, heat-exchanger rig is by air compartment (9) in this stove, the heat exchanger tube (8) that branched lower end is connected with the upper spacer of air compartment and communicates with air compartment, the upper spacer of branched upper end and air compartment connect and with hypomere body of heater inner chamber communicates, air compartment is passed in the lower end lower clapboard and with lower sand collecting hopper (13) corresponding go out sandpipe (11) composition; Air compartment (9) communicates with blower fan, heat exchanger tube and go out the alternate layout of sandpipe, the upper end of every heat exchanger tube (8) is provided with conical cowl (23), the lower end of every expenditure sandpipe (11) all be located at lower sand collecting hopper (13) on to put sand device (12) corresponding;
Be provided with temperature inductor (24) at the hypomere body of heater, perhaps be respectively equipped with temperature inductor (24) at epimere body of heater and hypomere body of heater, the induction end of temperature inductor is in the stove, and the sensed data output links to each other with the data processing and control system that stove is connected outward;
In described epimere body of heater (3), be provided with at least one group of collection/sand dividing device and be positioned at the below of Pneumatic sand dividing device (20); Collection/sand dividing device by a sand trap (19) that is funnel type and one and sand trap end opening over against taper sand separator (25) form.
2. a kind of full countercurrent heat exchange two-part cast waste sand roaster according to claim 1 is characterized in that: the furnace wall of described epimere body of heater (3) and hypomere body of heater (6) consists of or consists of by steel plate, insulation fibre, heat-resistance stainless steel plate from outside to inside by steel plate, insulation fibre, refractory brick from outside to inside.
3. a kind of full countercurrent heat exchange two-part cast waste sand roaster according to claim 1, it is characterized in that: the diameter of described epimere body of heater (3) is greater than the diameter of hypomere body of heater (6), perhaps the equal diameters of the diameter of epimere body of heater (3) and hypomere body of heater (6).
4. a kind of full countercurrent heat exchange two-part cast waste sand roaster according to claim 1, it is characterized in that: described epimere body of heater and hypomere body of heater directly connect as one, and perhaps are connected by flexible structure (5).
5. a kind of full countercurrent heat exchange two-part cast waste sand roaster according to claim 4, it is characterized in that: described flexible structure (5) is for mazy hermetically-sealed construction, namely has the structure of the corresponding mutual chimeric formation of concaveconvex structure on the convex-concave structure that has of epimere body of heater (3) lower end and the hypomere body of heater (6).
6. a kind of full countercurrent heat exchange two-part cast waste sand roaster according to claim 1 is characterized in that: be provided with at least a combustor (18) on the top of hypomere body of heater (6), have three burners (7) in the middle and upper part of hypomere body of heater at least.
7. a kind of full countercurrent heat exchange two-part cast waste sand roaster according to claim 1, it is characterized in that: the drive motors (21-1) that described sanding device (21) comprises the gear (21-2) that is located by connecting on epimere body of heater top, is connected with gear, the output shaft of gear stretches in the stove with the upper end of the universal driving shaft (21-3) of the loading hopper mechanism that links and is connected, and the lower end of universal driving shaft is connected with loading hopper (21-4).
8. a kind of full countercurrent heat exchange two-part cast waste sand roaster according to claim 1, it is characterized in that: described Pneumatic sand dividing device (20) comprises the blast pipe (20-1), the remittance air chamber (20-2) that communicates with blast pipe that pass epimere body of heater (3) furnace wall, be located at the sub-sand taper seat (20-3) that converges on the air chamber and be positioned at loading hopper (21-4) below, and a plurality of blast caps (20-4) that are located on the sub-sand taper seat are corresponding one by one with the top a plurality of escape pipes (20-5) that are located at the remittance air chamber.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110020516 CN102125982B (en) | 2010-12-20 | 2011-01-18 | Full-counterflow heat exchange two-section type casting waste sand roasting furnace |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010593752.5 | 2010-12-20 | ||
| CN201010593752 | 2010-12-20 | ||
| CN 201110020516 CN102125982B (en) | 2010-12-20 | 2011-01-18 | Full-counterflow heat exchange two-section type casting waste sand roasting furnace |
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| CN102125982A CN102125982A (en) | 2011-07-20 |
| CN102125982B true CN102125982B (en) | 2013-03-27 |
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| CN2011200151253U Expired - Lifetime CN201988675U (en) | 2010-12-17 | 2011-01-18 | Full-countercurrent heat exchange two-stage waste sand casting roasting furnace |
| CN 201110020516 Active CN102125982B (en) | 2010-12-20 | 2011-01-18 | Full-counterflow heat exchange two-section type casting waste sand roasting furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201988675U (en) * | 2010-12-17 | 2011-09-28 | 重庆长江造型材料（集团）有限公司 | Full-countercurrent heat exchange two-stage waste sand casting roasting furnace |
| CN102688982A (en) * | 2012-06-12 | 2012-09-26 | 西峡县众德汽车部件有限公司 | Process for roasting waste sand into precoated sand material |
| 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 |
| CN103286260A (en) * | 2013-06-03 | 2013-09-11 | 青岛天恒机械有限公司 | Pre-coated sand regeneration system energy recovery method |
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| CN103894538B (en) * | 2014-04-24 | 2015-11-18 | 青岛大学 | Precoated sand thermal reclamation equipment and renovation process thereof |
| CN107421332B (en) * | 2017-08-18 | 2023-04-25 | 郑州德森环境科技有限公司 | Vertical gradient continuous sintering machine |
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| 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 |
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| CN114799043B (en) * | 2022-03-31 | 2024-01-26 | 广西兰科资源再生利用有限公司 | Energy-saving circulation system for grinding sand-to-sand heat exchange |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201988675U (en) * | 2010-12-17 | 2011-09-28 | 重庆长江造型材料（集团）有限公司 | Full-countercurrent heat exchange two-stage waste sand casting roasting furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2225651Y (en) * | 1994-01-18 | 1996-04-24 | 林喜忱 | Industrial heating furnace of burning shaped coal |
| CN2326354Y (en) * | 1997-09-18 | 1999-06-30 | 西安建筑科技大学 | Fixed wall cyclone pneumatic grader |
| CN2826200Y (en) * | 2005-07-16 | 2006-10-11 | 谭光武 | Randomly assembled range |
| CN2859431Y (en) * | 2005-12-21 | 2007-01-17 | 熊鹰 | Intermittent combustion type casting waste sand roasting furnace |
| CN201411256Y (en) * | 2009-06-12 | 2010-02-24 | 江苏牧羊集团有限公司 | Rotation material distributing mechanism |
-
2011
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201988675U (en) * | 2010-12-17 | 2011-09-28 | 重庆长江造型材料（集团）有限公司 | Full-countercurrent heat exchange two-stage waste sand casting roasting furnace |
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| CN201988675U (en) | 2011-09-28 |
| CN102125982A (en) | 2011-07-20 |
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