CN1264630A - Method and appts. for reprocessing molding sand - Google Patents
Method and appts. for reprocessing molding sand Download PDFInfo
- Publication number
- CN1264630A CN1264630A CN00102209A CN00102209A CN1264630A CN 1264630 A CN1264630 A CN 1264630A CN 00102209 A CN00102209 A CN 00102209A CN 00102209 A CN00102209 A CN 00102209A CN 1264630 A CN1264630 A CN 1264630A
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- molding sand
- process tank
- air
- air pressure
- sand
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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
- B22C5/10—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by dust separating
-
- 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
-
- 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
- B22C5/02—Dressing by centrifuging essentially or additionally
-
- 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
- B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
A method of reclaiming casting sand comprises the steps of throwing casting sand into a processing tank and reclaiming the casting sand while air pressure in the processing tank is kept lower than air pressure outside the processing tank, and discharging the reclaimed casting sand from the processing tank while the internal air pressure is kept higher than the external air pressure. An apparatus for reclaiming and cooling casting sand, comprising means for fluidizing casting sand, means disposed above the fluidizing means for cooling the fluidized casting sand, means disposed above the cooling means for scaling bonds from particles of the casting sand by friction, and means disposed above the cooling means for having relatively large dust particles sedimented is characterized by the bond-scaling means, being configured such that the reclaimed casting sand can be discharged into the fluidizing means therethrough.
Description
The present invention relates to the equipment and the method for reprocessing molding sand, specifically, relate to, also relate to and effectively handle again and cool off equipment through the molding sand of handling again by divesting the method and apparatus of molding sand surface cement reprocessing molding sand.
The surface of some molding sand particles is coating adhesive.This molding sand coats new adhesive and reuses after its old adhesive is divested.
In the device (the open text of Japan Patent 7-314082 number) of known traditional reprocessing molding sand, be loaded in the drum with the molding sand of crossing, drum is closed by a cap seal that can vertically move, then, and the use centrifugal friction, molding sand rubs together.
Existing a kind of legacy equipment of handling air-set mold sand again wherein, is removed adhesive on the sand grains by making the mutual friction of air-set mold sand particle phase.On the other hand, when handle using alkaline phenol, phenol urethanes class or analog again, required in molding sand, to keep the least possible residual adhesive recently as the air-set mold sand of adhesive.Therefore, the molding sand particle that when handling air-set mold sand again, need rub for a long time.
In addition, about air-set mold sand, in view of the speed of its chemical reaction, the temperature of spendable sand generally is restricted.Therefore, as mentioned above, when sand grains rubbed back molding sand temperature rising for a long time, the molding sand of Chu Liing can not be used as air-set mold sand immediately after it is handled again again.Need cooling when therefore, the molding sand after handling is again prepared to use.So far, after handling, reprocessing molding sand need cool off in an independent cooler always again.Therefore, problem be again treatment facility since to comprise reprocessing molding sand and the cooling reprocessing molding sand two kinds of devices, thereby become huge and cost high.
But according to the disclosed method of above-mentioned patent disclosure text, existing problem is that treatment facility needs movable part again, for example lid that can vertically move, thereby the complexity that becomes, and maintenance that need be extra.In addition, also not having can reprocessing molding sand and need not to take into account the process tank simple in structure of its quantity and degree of treatment.
The present invention makes in view of there being the problems referred to above, the purpose of this invention is to provide to need not to use method and apparatus lid, simple reprocessing molding sand of movable part as can vertically moving.Another object of the present invention provides a single equipment simple in structure, and this equipment can easily be controlled quantity and the degree of handling again, need not to take into account the quantity and the degree of processed molding sand.Another object of the present invention provides a kind of equipment of compact conformation, and this equipment has reprocessing molding sand and cools off the function of the molding sand of handling again.
To achieve these goals, the method of reprocessing molding sand of the present invention is characterised in that it may further comprise the steps: molding sand is dropped into process tank, and reprocessing molding sand when the air pressure that the air pressure in the process tank is kept lower than outside the process tank, and when keeping to such an extent that be higher than external air pressure, discharge the molding sand of handling again to internal air pressure from process tank.
According to one aspect of the present invention, the equipment of reprocessing molding sand has and is located at the device that is used in the process tank divest attached to a part of pollutant on the molding sand particle surface, this equipment comprises that one is used for air being blown into the blowpipe of process tank and being used for the alternately conversion equipment of open and close suction pipe and blowpipe from suction pipe, one that process tank is drawn air, is characterized in that: pass air into and flow out by being arranged on gap in the device for stripping with suction pipe and blowpipe cooperating.
According to this aspect of the present invention, utilize the delay and the discharge of molding sand in the air flow control process jar, thereby molding sand is handled by an equipment simple in structure again.Even when the molding sand quantity that needs to handle again when little or degree is high, as long as a process tank just can easily be controlled degree of treatment by a timer of regulating again the processing time.
According to another aspect of the present invention, the equipment that is used for handling again and cools off molding sand comprises the device that is used for the fluidisation molding sand, be arranged on device that the fluidizer top is used to cool off the molding sand of fluidisation, be arranged on the device that the cooling device top is used for divesting from the molding sand particle by friction adhesive, and be arranged on the device that the cooling device top is used to make big dust granule precipitation, it is characterized in that: the structure that divests the device of adhesive makes the molding sand of handling again enter fluidizer by it.
In the equipment of said structure, when the molding sand that reclaims was used to divest the device of adhesive by input, the molding sand particle rubbed together, and adhesive is peeled off.Behind molding sand friction certain hour, the molding sand of Chu Liing is arranged to fluidizer again.The molding sand of discharging is fluidized, and the device cooling that is cooled.On the other hand, bigger dust granules discharges with the molding sand of handling again at the precipitated device post precipitation of molding sand.
Brief Description Of Drawings is as follows:
The cross-sectional figure of the signal of Fig. 1 represent first embodiment of the invention just at the state of reprocessing molding sand.
The cross-sectional figure of the signal of Fig. 2 represents the state that discharges the molding sand through handling again of first embodiment of the invention.
The amplification of Fig. 3 illustrates cross-sectional figure to represent the settler that uses among first embodiment.
The cross-sectional figure of the signal of Fig. 4 represents the second embodiment of the present invention.
The cross-sectional figure of the signal of Fig. 5 represents the third embodiment of the present invention.
The front view of Fig. 6 is represented the fourth embodiment of the present invention.
Molding sand normal operation silica in this specification, silica sand (siliconea sand) or Mullite sand also comprises the spherical mullite sand with high rigidity, its process spraying/ Dry granulating and oven dry.
Process tank in this specification is the process tank of reprocessing molding sand. Processing is by following again Mode is carried out: sand grains rubs together or by producing shearing force, is coated with in order to divest the surface Cover the adhesive that adheres on the Molding Sand superficial layer of adhesive.
In the present invention, can use various known device for stripping. For example in one type, Molding sand is put in the cylinder with the bottom, and this cylinder high speed rotating makes the sand grains phase Mutual friction, thus divest the pollutant that adheres on the Molding Sand surface.
Another kind of system can be used as device for stripping, and wherein, rotating roller is arranged on a pateriform In the going barrel divesting the pollutant that adheres on the Molding Sand surface, this process for stripping be by Molding sand is pressed on going barrel inwall and the rotating roller, produces shearing force and carry out.
As mentioned above, can use any known device for stripping. In addition, the present invention can with Again treatment facility combination of combustion-type as the device after processing again.
In the present invention, the air pressure in the process tank can reduce to and be lower than tank outer air pressure example Such as 20mmAq. When the air pressure in the process tank further descends, enter in the process tank Air-flow increases, but molding sand still is retained in the tank. On the other hand, connect owing to the process tank internal pressure Molding sand tends to spill process tank during nearly atmospheric pressure, thereby needs the pressure reduction of about 20mmAq. Air capacity from fluid layer inflow process tank is according to the change in size in the gap in the device for stripping Change. This gap should be about 3-15mm, is preferably about 5-10mm.
Particularly in device for stripping of the present invention, molding sand is dropped in the cylinder of high speed rotating, is divested by the mutual friction of sand grains phase attached to the pollutant on the molding sand sand grain surface; And molding sand is also thrown outward by the centrifugal force of going barrel; Attached to the pollutant on the molding sand since the sand grains of the outer sand grains of throwing and savings on ring wear and tear mutually and further divested.Therefore, when using device for stripping of the present invention, the air pressure in the process tank is held to be lower than the outer air pressure of process tank by regulating the air capacity that flows into and discharge by the gap that is located between rotor and the ring.When the air pressure in the process tank reduced to the air pressure that is lower than outside the process tank, molding sand can not fall by the gap.In addition, the size in gap can be relevant to air pressure and change.
In the present invention, can use the device suction side of air blast or dust arrester for example of the suction air of any kind of.In the present invention, the device of the generation air in the specification is device such as the air blast that is used to produce low-pressure compressed air.Also can adopt by with getter device and air generation device in conjunction with the equipment that forms.
In the present invention, blowpipe is meant the pipe that is used for air is blown into process tank.In the present invention, suction pipe is meant and is used for from the air-breathing pipe of process tank.For example, in the present invention, switching valve can be used as conversion equipment.But, also can have any device that alternately changes blowpipe and suction pipe by the signal of telecommunication.
In the present invention, molding sand is weighed, so that make disposal ability and the molding sand quality handled again remains unchanged in view of the processing time.
In the present invention, in fact comprise self-hardening resin such as alkaline phenol, phenol urethanes class or furans attached to the pollutant on the molding sand sand grain surface, and the adhesive of raw sand such as bentonite, starch slurry or sea coal.
In the present invention, the dust settler is meant and is used to remove attached to the lip-deep pollutant of molding sand after handling again with the constant any device of molding sand quality after keeping handling.For example, the means that are used for removing dust comprise that air velocity by making dust hood is corresponding to the method that makes pollutant and sand separation by fluid layer and dust hood in conjunction with the sand speed that falls, perhaps itself and a target are collided by sand upwards being blown over a blowpipe, thereby by the official post pollutant of inertia force and the method for sand separation.
In the present invention, when using the cylindrical process jar, device for stripping preferably has a cylindrical side.This selection forms the gap, thereby forms the path of circulating air easily between the rotor of process tank and ring flat-plate and device for stripping, so as by the gap blow, suck.When using two device for stripping, ring device can be stacked.
Be basic description the present invention with first embodiment below.Fig. 1 and 2 represents the cross-sectional figure of the equipment of use cyclone reprocessing molding sand of the present invention.Fig. 1 represents to be in the equipment in the treatment state.Fig. 2 represents to be in the equipment of emissions status.In Fig. 1, process tank have the device for stripping 2 of its bottom, at an upper portion thereof be used to drop into the import 3 of molding sand and in the outlet 4 that is used to discharge molding sand of its underpart.Outlet 4 also is used as the import and export of air.
The blowpipe 5 of process tank 1 by at an upper portion thereof is connected with air blast P as the air generation device.Process tank 1 is connected with suction side as the air blast P of getter device by a suction pipe 6 and cyclone at an upper portion thereof.Molding sand chute 8 is arranged on the top of process tank 1.Chute 8 has a 8A that weighs who is communicated with molding sand chute import 3.
In addition, be provided with a switching valve as conversion equipment 9, so that be converted to suction pipe 6 from blowpipe 5.
After processing below the outlet 4 of molding sand, as fluid layer 10 of the device of removing impalpable powder or jar, and the import of a dust hood F is communicated with the bottom of process tank 1.The top of fluid layer 10 is communicated with the getter device (not shown) by dust collect plant 12.The top of fluid layer 10 is communicated with a suction pipe A by conversion equipment 9, and conversion equipment 9 is open and close as required.
The cross-sectional figure of Fig. 3 represents the device for stripping that uses among first embodiment.Device for stripping 2 comprises a going barrel 16 in the figure, and this going barrel is driven and high speed rotating by motor 15 by belt pulley 14 and seat 13.When drum is rotated after molding sand S drops into, divested by the mutual friction of sand grains phase attached to the pollutant on the sand grain surface of molding sand S.Between going barrel 16 and a retainer ring 17, form a gap, can flow into and flow out process tank 1 by this clearance G air.
The work for the treatment of apparatus is described now again.Molding sand is being subjected to handling again in equipment shown in Figure 1: air blast P works; Going barrel 16 is just driven by motor 15 by seat and belt pulley 14; Flange on the dust hood F top is communicated with a control of dust pipeline (not shown), and the air quantity that needs is always sent by this pipeline; Conversion equipment 9 is set to such an extent that air is blown in the process tank 1.
During above-mentioned state, suction pipe 6 that is communicated with process tank 1 and blowpipe 5 be open and close respectively, the suction pipe 6A closure that is communicated with fluid layer 10.At this moment, suction pipe 6 is used for making dust and sand separation by the different settling rate at process tank 1.In other words, the suction side of inhaling to the air generation device of the air in the process tank 1 by suction pipe 6 and cyclone 7.The air that air blast P produces flows into process tank 1 by the gap between going barrel 16 and the retainer ring 17.
Molding sand in the chute 8 is weighed by the timer among the 8A that weighs, and drops into process tank 1.Fall into the centrifugal force that the molding sand of process tank applies by going barrel 16 and throw to retainer ring 17, and with the molding sand collision that is accumulated in the retainer ring 17, make some pollutants be divested (see figure 3) attached to sand grain surface.When air flowed into process tank 1 by the clearance G between going barrel 16 and the retainer ring 17, no molding sand can spill from this gap.Therefore, quilt throwing repeatedly when sand grains is detained in process tank, and collision mutually.In other words, the surface of molding sand particle corresponding to the processing time, is ground, and molding sand is trapped in the process tank 1 in the processing time.Therefore, the holdup time is set the degree of grinding that needs to obtain.
How the molding sand of consulting now after Fig. 2 description is handled fully again discharges.Suction pipe 6 that is communicated with process tank 1 and blowpipe 5 are closed respectively and open, and the suction pipe 6A that is communicated with fluid layer 10 opens.That is to say that the air in the gas holder 10A of fluid layer 10 is inhaled into process tank 1 by blowpipe 5 and conversion equipment 9.The air of sending into process tank 1 is pressed into fluid layer 10 with the molding sand S after handling fully again by the clearance G between going barrel 16 and the retainer ring 17.
Because this moment, the dust that divested was still attached on the particle, thereby must be removed.The molding sand that falls into after the processing of fluid layer 10 is upwards blowed by the air-flow that blows out by seam plate 10B, and flows to dust hood F.Because dust hood F inside is conditioned, makes wind speed and molding sand settling velocity coupling, thereby have only dust to carry and be collected in the dust arrester (not shown) by air-flow.At last, ground, do not had the molding sand after the handling again of dust granules to be discharged from molding sand outlet 11.
Though blowpipe 5 and suction pipe 6 and 6A are provided with respectively in the present embodiment,, a pipe also can be realized two kinds of functions.Dust is collected by cyclone 7.
As mentioned above, the molding sand that present embodiment can easily be controlled in the process tank by the air pressure of regulating in the process tank is detained and discharging, thus the degree that the control molding sand is handled again.In addition, in the present invention, reprocessing molding sand only needs an equipment simple in structure.
Be basic description the present invention with second embodiment now.Fig. 4 is the cross-sectional figure of present device, wherein, uses a dust arrester 41 to substitute cyclone 7.In Fig. 4, solid line is illustrated in the state of the air-flow that contains the molding sand of just being handled again in the equipment, and dotted line is illustrated in the state of the air-flow that contains the molding sand after the handling fully again of just being discharged in the equipment.
In Fig. 4, except that dust arrester 41, equipment has the structure identical with the equipment of first embodiment.The function class of second embodiment is similar to first embodiment.But,, thereby can prevent that air blast P is subjected to the wearing and tearing of grit owing to suction pipe 6 is communicated with the dust arrester 41 that is used for control of dust.As mentioned above, has the effect that prevents the air blast wearing and tearing by dust arrester 41, the second embodiment.
At the 3rd embodiment the present invention is described now.Fig. 5 is the present invention cross-sectional figure of treatment facility again, wherein, only is to use dust hood F to substitute cyclone and dust arrester.In Fig. 5, contain the state of the air-flow of the molding sand of being handled again in the solid line indication equipment, contain the state of the air-flow of the molding sand after the handling fully again of just being discharged in the dotted line indication equipment.
In Fig. 5, except in equipment, there not being air circulation, and do not use beyond the cyclone and dust arrester in the air circulation path, equipment has identical structure with equipment shown in Figure 1.
The work of the equipment of said structure is described now.In Fig. 5, molding sand S is subjected to handling in following state again, and wherein, suction pipe 6 is opened, and the blowpipe 5 that is communicated with process tank 1 is closed.Molding sand after handling again is discharged in following state, and wherein, suction pipe is closed, and the blowpipe 5 that is communicated with process tank 1 is opened.In equipment shown in Figure 5, air flows by following mode: during handling, door G1 is opened, and makes air flow into the suction pipe of opening 6 after it passes gap 4 again.Because the blowpipe closure is identical with the air quantity that air blast produces at the air quantity in cover F.Because air-lock D2 sealing this moment, thereby the control of dust air quantity is the air blast air quantity and flows through a sum total of G1 air quantity.
Then, during the molding sand after discharging is handled again, door G1 closure, blowpipe 5 is opened, and air-lock D2 opens.Portion of air from air blast flows via fluid layer, and another part then flows into dust hood F from suction pipe 6.Because this moment, the total amount of control of dust wind reduced, thereby wind that should deficiency is by replenishing from air-lock D2.As mentioned above, because the 3rd embodiment can save cyclone and dust arrester, thereby it can further be simplified.
Consult Fig. 6 now and describe the 4th embodiment, it is the modification of third embodiment of the invention.As shown in Figure 6, cool off the cooling device 20 of molding sand of fluidisation except it has being used on the centre position that is arranged between process tank 1 and the fluid layer 10, equipment has and essentially identical structure of the 3rd embodiment and working condition.
The inside of dust hood F is by being communicated with dust arrester a communicating pipe 25, and the function of communicating pipe 25 is similar to the suction pipe 6A among first and second embodiment.As the valve G1 of the 3rd embodiment of the device of regulating the control of dust air quantity and the combination of air-lock D2, obtain simplifying after adopting communicating pipe 25, communicating pipe has replaced combinations thereof just.Adopted three switching mechanisms 26,27 and 28 to substitute the conversion equipment 9 of the 3rd embodiment.The effect of said mechanism also is similar to conversion equipment respectively.
Cooling device 20 comprises horizontal pipeline, and wherein, many pipes arrange vertically that above air accumulator 10A water therefrom flows through.
Be into air accumulator, molding sand S with for example about 100 ℃ of temperature device 20 coolings that when being fluidized device 1 fluidisation and stirring, are cooled.The temperature of cooled molding sand is reduced to for example about 30 ℃.
When the temperature device of the molding sand S that discharges from the molding sand outlet was controlled, temperature was around exporting 9 temperature sensor measurements that are provided with by one.Temperature is controlled, thereby when the temperature of molding sand surpassed predetermined value, the sand amount of being handled again was reduced, and the predetermined cycle is extended or processing procedure is stopped value to recover to be scheduled to temporarily.
Therefore, molding sand handle again and cool off after can use immediately.
Can know from top description and to find out, use air pressure,, can use equipment reprocessing molding sand simple in structure by delay and the discharging that is controlled at the molding sand of being handled again in the process tank.Even when needing the processing again of high level,, use the timer of regulating the processing time as long as use a process tank, and control by air pressure and be detained and discharging, also can easily control degree of treatment again.Equipment of the present invention also has fabulous actual effect, and it can make molding sand be handled and cool off, and it can make the device of a compact conformation.Therefore, the present invention has above-mentioned effect, and industry is had remarkable contribution.
Claims (10)
1. the method for a reprocessing molding sand, it may further comprise the steps: molding sand is dropped into process tank, reprocessing molding sand when the air pressure that the air pressure in the process tank is kept lower than outside the process tank, and when keeping internal air pressure to such an extent that be higher than external air pressure, discharge molding sand after handling again.
2. the method for claim 1 is characterized in that: the step that internal air pressure is kept lower than external air pressure is to be undertaken by the air-flow by air generation device and process tank circulation again.
3. the method for claim 1 is characterized in that: the step that internal air pressure is kept lower than external air pressure is to be undertaken by the air-flow by air generation device, process tank and getter device circulation again.
4. as each described method in the claim 1 to 3, when keeping internal air pressure to such an extent that be higher than external air pressure, the step that the molding sand after handling is again discharged from process tank is to be undertaken by providing from process tank top from the downward air-flow of air generation device.
5. the method for a reprocessing molding sand, it may further comprise the steps: makes molding sand fall into process tank, divests attached to a part of pollutant on the particle surface of the molding sand that falls, and the molding sand of discharging after handling again, it is characterized in that:
At least in strip step, air from the air generation device by being arranged on the device for stripping the process tank going barrel and retainer ring between the gap that forms flow into process tank, the air in the process tank is by a suction pipe suction.
6. the method for a reprocessing molding sand, it may further comprise the steps: makes molding sand fall into a process tank, divests attached to a part of pollutant on the molding sand particle surface that falls into, and the molding sand of discharging after handling again, it is characterized in that:
At least in the step of the molding sand after discharging is handled again, air is blown into process tank from the air generation device by a blowpipe, and the air that is blown into process tank makes the molding sand after handling again enter the dust settler from the gap that forms between going barrel of pollutant device for stripping and the retainer ring.
7. the equipment of a reprocessing molding sand, have and be arranged on being used in the process tank and divest device attached to a part of pollutant on the molding sand particle surface, described equipment comprises that one is used for being used for blowpipe, one that air is blown into process tank from the suction pipe of process tank suction air and being used for the alternately conversion equipment of open and close blowpipe and suction pipe, is characterized in that:
In the cooperating of suction pipe and blowpipe, air is flowed into and outflow by the gap that is arranged in the device for stripping.
8. the equipment of a molding sand of handling again, it comprises:
A process tank, it has the outlet of the molding sand after be located at its top, bottom and bottom respectively one import, the device that divests the molding sand particle surface and discharging that drops into molding sand is handled again;
A suction pipe, the one end is communicated with process tank, and its other end is communicated with air generator;
A blowpipe, the one end is communicated with process tank, and its other end is communicated with getter device;
Conversion equipment, its be used to change blow, the connection between suction pipe and the process tank, and
Settler, it is used to separate the dust granules of the molding sand after the handling again of process tank outlet discharging.
9. equipment as claimed in claim 8 is characterized in that: described settler comprises a fluid layer that is communicated with the exhaust outlet of process tank, handles outlet of back molding sand again and at the dust collect plant on fluid layer top at fluid layer bottom refining.
10. equipment of handling again and cooling off molding sand, it comprises:
The device that is used for the fluidisation molding sand,
Be arranged on the device that fluidizer top is used to cool off the molding sand of fluidisation,
Be arranged on cooling device top and be used for divesting the device of adhesive from the molding sand particle by friction, and
Be arranged on the device that the cooling device top is used to make big grit precipitation, it is characterized in that:
The structure that divests the device of adhesive makes the molding sand after handling again to enter fluidizer by it.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29470/1999 | 1999-02-08 | ||
| JP02947099A JP3329757B2 (en) | 1999-02-08 | 1999-02-08 | Method and apparatus for reclaiming foundry sand |
| JP339068/1999 | 1999-11-30 | ||
| JP33906899A JP3329779B2 (en) | 1999-11-30 | 1999-11-30 | Casting sand recycling equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1264630A true CN1264630A (en) | 2000-08-30 |
Family
ID=26367674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00102209A Pending CN1264630A (en) | 1999-02-08 | 2000-02-04 | Method and appts. for reprocessing molding sand |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1025926B1 (en) |
| KR (1) | KR20000057955A (en) |
| CN (1) | CN1264630A (en) |
| DE (1) | DE60010775T2 (en) |
| TW (1) | TW462901B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101868310B (en) * | 2007-12-07 | 2012-09-05 | 新东工业株式会社 | Device for regenerating molding sand |
| CN108136487A (en) * | 2015-10-15 | 2018-06-08 | 新东工业株式会社 | The regeneration method and regenerative system of sand |
| CN112833670A (en) * | 2020-12-31 | 2021-05-25 | 重庆长江造型材料（集团）股份有限公司 | In-furnace thermal regulation system of horizontal high-temperature kiln |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MX361638B (en) * | 2012-08-23 | 2018-12-13 | Sintokogio Ltd | Molding sand regeneration device. |
| BR112017026569A2 (en) * | 2015-06-11 | 2018-08-14 | Sintokogio, Ltd. | A regeneration method of molding sand, and reproduction equipment |
| CN108097868B (en) * | 2018-02-11 | 2023-06-13 | 江西江工精密机械有限公司 | Dust removal and heat extraction system for lost foam casting sand treatment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4436138A (en) * | 1980-07-23 | 1984-03-13 | Nippon Chuzo Kabushiki Kaisha | Method of and apparatus for reclaiming molding sand |
| DE4212097A1 (en) * | 1992-04-10 | 1993-10-14 | Boenisch Dietmar | Method and device for regenerating foundry sand |
| CH686411A5 (en) * | 1994-06-15 | 1996-03-29 | Fischer Georg Giessereianlagen | Method and device for the regeneration of foundry sand. |
-
2000
- 2000-01-29 TW TW089101570A patent/TW462901B/en not_active IP Right Cessation
- 2000-02-04 CN CN00102209A patent/CN1264630A/en active Pending
- 2000-02-08 KR KR1020000005754A patent/KR20000057955A/en not_active Application Discontinuation
- 2000-02-08 EP EP00102650A patent/EP1025926B1/en not_active Expired - Lifetime
- 2000-02-08 DE DE60010775T patent/DE60010775T2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101868310B (en) * | 2007-12-07 | 2012-09-05 | 新东工业株式会社 | Device for regenerating molding sand |
| CN108136487A (en) * | 2015-10-15 | 2018-06-08 | 新东工业株式会社 | The regeneration method and regenerative system of sand |
| CN112833670A (en) * | 2020-12-31 | 2021-05-25 | 重庆长江造型材料（集团）股份有限公司 | In-furnace thermal regulation system of horizontal high-temperature kiln |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1025926B1 (en) | 2004-05-19 |
| EP1025926A2 (en) | 2000-08-09 |
| DE60010775T2 (en) | 2004-09-23 |
| EP1025926A3 (en) | 2000-08-23 |
| DE60010775D1 (en) | 2004-06-24 |
| TW462901B (en) | 2001-11-11 |
| KR20000057955A (en) | 2000-09-25 |
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