| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 141 | Method for regenerating used foundry sand | JP14725191 | 1991-06-19 | JPH0596340A | 1993-04-20 | EKARUTO SHIYAARUSHIYUMITSUTO |
| PURPOSE: To regenerate the used foundry sand at a low cost by supplying heated air having the limited temperature into a drying device, drying the foundry sand, supplying this sand into a mechanical cleaning device and supplying the air from the drying device again to the drying device through the mechanical cleaning device. CONSTITUTION: The heated air having the temperature clearly below the sintering temperature of clay-containing binder and below the combustion temperature of organic binder is supplied into a drying stage (crushing and drying device) 6 to dry the used foundry sand having the remaining moisture. At this time, the air supplying temperature is limited to the maximum 550 deg.C. Subsequently, the dried sand is supplied directly to the first mechanical cleaning stage (impact separator) 11 and the air-gas mixture exhausted from the drying stage 6 is supplied again into the drying stage 6 through the second mechanical cleaning stage 40, drying filter 13 and a heating device 8 successively connected in the circulating system. | ||||||
| 142 | Treatment of foundry sand and/or core sand | JP2524391 | 1991-01-28 | JPH04313443A | 1992-11-05 | IBUO HENITSUHI |
| PURPOSE: To make a contribution to a reduction of environmental pollution by separating a recyclable dust portion and a non-recyclable portion, cleaning the sand remaining in a regeneration system and introducing the sand as core sand. CONSTITUTION: The foundry sand taken out of a casting system 1 and a discharge grid 2 is sent to a treatment system 3 where the sand is separated from the metallic portion. The used sand 5 is branched as a ratio of the technically necessary sand. The used sand is introduced into a second recycling system 6 where the sand is regenerated. The recyclable dust portion and the non- recyclable portion are thus separated. The sand remaining in the regenerating system is washed and is introduced as the core sand into a core forming chamber of the system. As a result, the waste may be minimized. COPYRIGHT: (C)1992,JPO | ||||||
| 143 | Method for cleaning powder and granular material and apparatus therefor | JP22362591 | 1991-08-09 | JPH04258367A | 1992-09-14 | HANSU KURAUSU SHIYOTSUTO |
| PURPOSE: To clean the particle surfaces of contaminated powder and granular materials, particularly thermally reconditioned used molding sands without the particle destruction thereof although these surfaces contain undesirable particulates, such as carbonized resins, additives and chamotte. CONSTITUTION: The method is to load gas under superoverpressure (=pressurized gaseous flow) on the powder and granular materials to be cleaned or recleaned, putting the powder and granular materials 2 into a fluidized state by such loading of the pressurized gas, preventing the particles from receiving impact load or collision load by a fixedly arranged wall or movable wall and executing the cleaning only by the abrasive property or frictional surface stress of the particles. Or the apparatus is equipped with a vessel 3 having a powder and granular material inlet and a powder and granular material outlet. This vessel has a gas permeable inflow bottom 5 for the purpose of forming a fluidized layer 8. The apparatus is connected to a pressurized gas source arranged upper than the inflow bottom and has at least one nozzle 9 directing this pressurized gas stream toward the inside of the fluidized bed. COPYRIGHT: (C)1992,JPO | ||||||
| 144 | Method for regenerative treatment of foundry old sand | JP32137690 | 1990-11-27 | JPH03180245A | 1991-08-06 | FURANTSU SATOMAA; RUUTOBUIHI BUIRUHERUMU |
| PURPOSE: To provide a cost effective regenerative treatment method for foundry old sand by grinding sand grains to liberate, polish and remove away the useful dead-burnt binders and additive skin fixed to the particles from the dust and removing these binders and the skin by a suction effect. CONSTITUTION: The clay-bound foundry old sand is regenerated. The old sand is packed into a drum 1 arranged at a horizontal axis. Acceleration and deceleration are repetitively applied to the sand grains and the sand grains are polished by overall impact and shearing stresses. As a result, the useful dead-burnt binders and additive skin fixed to the particles are liberated from the dust 2 and are polished and removed away from the sand particles during the treatment. These binders and the skin are removed by the suction effect in control means using a cyclone separating machine 3, a filter 4 or the like. As a result, the amt. of the old sand to be discarded is decreased and a contribution may be made substantially to environmental protection. COPYRIGHT: (C)1991,JPO | ||||||
| 145 | Treating device of mold sand | JP13224584 | 1984-06-26 | JPS619942A | 1986-01-17 | SUGIYAMA TOSHIHIDE; HATANO KENICHI; AZUMA FUMIO |
| PURPOSE:To provide a decrease in the amt. of the bond to be added and a reduction in an operation cost and to stabilize the characteristic of molding sand by providing a means for changing over adequately the dry sand separated by a screen means to a return sand recovery line, core sand supply line and waste sand line. CONSTITUTION:The casting mold 22 conveyed by a conveyor 21 drops onto the 1st shake-out machine 23. The molding sand and casting which do not pass through a relatively coarse drainboard 27 collapse on the 2nd shake-out machine 31. The sand and casting are conveyed in succession thereto onto an upper ttrough 46 of a conveyor 45 and are transferred onto a conveyor 51, by which the sand and casting air pneumatically conveyed from a conveyor 57 into a storage 59 and are mixed by a molding sand mixture 75. On the other hand, the dry sand past the drainboard 27 and mesh 28 of a machine 23 is conveyed onto a vibration screen 41. The rough sand failing to pass through the screen 43 is passed through a trough 46 and is treated together with the return sand from a machine 31. The sand past the screen 43 is fed through a trough 47 to the inside of a hopper 52 and is charged again into the return sand recovery line or is changed over to the core sand supply line or waste sand line, by which the sand is treated. | ||||||
| 146 | JPS6026620B2 - | JP8243981 | 1981-05-28 | JPS6026620B2 | 1985-06-25 | JON SUTEIBUNSON; JON MACHIN; DEBITSUDO RESURII DAIKU |
| 147 | Treating device for molding sand | JP18155883 | 1983-09-28 | JPS6072637A | 1985-04-24 | IMAMURA NOBUHITO; ASAI SHIGEMI |
| PURPOSE:To provide a titled device which reduces the size over the entire part of a dust collecting and discharging mechanism in a series of sand treatments in which recovered molding sand are ground, magnetically screened, conveyed upward, reconditioned and stored by connecting the upper spaces of the respective devices with air flow ports and discharging simultaneously the generated dust. CONSTITUTION:The recovered molding sand entering the suction hood 9 suspended from a rubber curtain 11 is ground by a grinder 1 and is removed of iron by a magnetic separator 13 and thereafter the sand is moved upward by a lifting type conveyor 14 for molding sand and the sand surfaces are reconditioned by the collision of the jet air injected from a sand reconditioner 22. The reconditioned sand is recovered in a storage tank 33. The hood 9, the space in the upper part of a sand conveyor 14, the chamber of the reconditioner 22 and the space in the upper part of the tank 33 are connected by air flow ports 12, 18, 21, 35 and a discharge port 19. The suspended dust is simultaneously discharged together with the powder generated by the reconditioner 22 by a dust collector 39. The dust collecting and discharging mechanism is reduced in size and simplified over the entire part. | ||||||
| 148 | Regenerating and separating method of special sand in regenerating process of molding sand | JP12869882 | 1982-07-22 | JPS5919051A | 1984-01-31 | ITOU TAKESHI |
| PURPOSE:To separate and recover chromite sand and silica sand from molding sand by removing iron pieces and additives on surfaces from the recovered molding sand then separating fine powder and iron powder further therefrom by pneumatic separation then separating magnetically the same. CONSTITUTION:A used casting mold which is a casting mold used for casting of cast steel and special steel and in which inexpensive silica sand is used for backing sand and costly chromite sand is used as facing sand is ground after knock-out. The ground sand is processed with a drum type magnetic separator and is made free from the steel and special steel pieces contained therein, whereafter the water glass, resin, etc. of the hardener, etc. stuck thereon are stripped away. The fine powder and iron powder inadequate for reuse are removed with a separator for pulverized powder, then the sand is cooled to <=30 deg.C and is processed with a powerful magnetic separator, whereby the chromite sand having magnetism is separated from the silica sand and is separately recovered. Both sands are used again as a raw material for the casting mold. | ||||||
| 149 | Casting core by calcination in fluid bed fornace and plant and method for regenerating sand from mold | JP1066583 | 1983-01-27 | JPS58163545A | 1983-09-28 | MARIINO SERI |
| 150 | Method and device for regenerating molding sand used | JP1106082 | 1982-01-28 | JPS57142741A | 1982-09-03 | HANSU BAUERU; HAINTSUUUITOHOORUDO SHIYUMITSU |
| 151 | JPS5782437U - | JP13639081 | 1981-09-16 | JPS5782437U | 1982-05-21 | |
| 152 | Regenerated sand composition and its manufacture | JP8243981 | 1981-05-28 | JPS5722842A | 1982-02-05 | JIYON SUTEIBUNSON; JIYON MACHIN; DEBITSUDO RESURII DAIKU |
| 153 | Device for washing sand for unburned mold | JP16842479 | 1979-12-26 | JPS55100845A | 1980-08-01 | JIEEMUZU HIYUU KAAPENTAA; JIYOSEFU EDOWAADO BOURINGU JIY |
| 154 | JPS5525945B2 - | JP9513279 | 1979-07-27 | JPS5525945B2 | 1980-07-09 | |
| 155 | Condition adjusting instrument for granular material | JP9513279 | 1979-07-27 | JPS5540092A | 1980-03-21 | JIEEMUZU HIYUU KAAPENTAA JIYUN; BAANAADO UIRIAMU RUKUSAA |
| 156 | JPS5440489B2 - | JP7518872 | 1972-07-28 | JPS5440489B2 | 1979-12-04 | |
| 157 | Netsukokaseijushisukuratsupusaiseikongosochi | JP13233274 | 1974-11-15 | JPS5157779A | 1976-05-20 | KUNOGI MASATO; KOYAMA HIRONORI |
| 158 | PLANT FOR REGENERATING FOUNDRY SAND | EP17737882.5 | 2017-07-03 | EP3310507B1 | 2018-09-26 | TOSCO, Bartolomeo; BOCCA, Paolo |
| A plant for regenerating foundry sand comprises a combustion chamber (10) and a cooling chamber (14) provided with nozzles to maintain a bed of fluidized fluid in each chamber. A communicating duct (18) which connects the combustion chamber (10) with the cooling chamber (14). A vertical or inclined lower end portion of the duct (18a) is at least partially surrounded by or close to refrigerating pipes (27) in the cooling chamber (14). | ||||||
| 159 | METHOD FOR PRODUCTION OF REGENERATED FOUNDRY SAND | EP08830795.4 | 2008-09-11 | EP2191908B1 | 2017-08-09 | INA, Yoshimitsu |
| 160 | VERFAHREN ZUR REGENERIERUNG DES SANDS VON SANDFORMEN UND -KERNEN | EP12758771.5 | 2012-08-24 | EP2747914B1 | 2016-11-02 | SCHWICKAL, Harald; HÜBNER, Matthias |
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