US3552662A - Device for regaining components of knocked-out mold and core sand and pieces - Google Patents

Device for regaining components of knocked-out mold and core sand and pieces Download PDF

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Publication number
US3552662A
US3552662A US785630A US3552662DA US3552662A US 3552662 A US3552662 A US 3552662A US 785630 A US785630 A US 785630A US 3552662D A US3552662D A US 3552662DA US 3552662 A US3552662 A US 3552662A
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US
United States
Prior art keywords
housing
perforations
crushed material
knocked
separator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US785630A
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English (en)
Inventor
Konrad Grob
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alfred Gutmann Gesellschaft fuer Maschinenbau
Original Assignee
Alfred Gutmann Gesellschaft fuer Maschinenbau
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19671583540 external-priority patent/DE1583540C/de
Application filed by Alfred Gutmann Gesellschaft fuer Maschinenbau filed Critical Alfred Gutmann Gesellschaft fuer Maschinenbau
Application granted granted Critical
Publication of US3552662A publication Critical patent/US3552662A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B22C5/18—Plants for preparing mould materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S241/00—Solid material comminution or disintegration
    • Y10S241/10—Foundry sand treatment

Definitions

  • the present invention concerns a device for recovering the components of knocked-out mold and core sand pieces. More specifically, the present invention relates to the recovery of the components of mold and core sand pieces which are obtained in foundries after the pouring has been completed.
  • FIG. I illustrates partially in section and partially in side view a device according to the present invention.
  • FIG. 2 is a top view of FIG. 1.
  • FIG. 3 shows a detail of the left-hand portion of FIG. 1 as seen in the direction'of the arrow III of FIG. 1.
  • the device according to the present invention is characterized primarily in that at the bottom" of a housing which receives the broken off lumps and chips there are provided rotating beater vanes while in at least a portion of the housing walls there are provided outlet openings for the mass which has been crushed by the beater vanes. Furthermore, outside said outlet openings there is provided a container for collecting the crushed mass which last mentioned container is followed b a de ice for separating'the sand granules from the crushed mass.
  • the broken off lumps and chips which are fed into the housing are crushedby means of blades or vanes rotating at a high speed and are centrifuged by said blades against the housing wall.
  • the housing wall is provided with outlet openings in the form of almesh, which openings have a size corresponding to the granular size of the respective quartz sand.
  • the size of the openings in the perforated or screen surface which may extend over the entire circumference of the housing wall is selected in conformity with the granular size of the quartz sand.
  • a centrifugal separator is connected to the collecting container of the crushing device, preferably through the intervention of a suction funnel.
  • This centrifugal separator separates the quartz granules from the crushed mass and furthermore separates from the dustlike components the active binding substance while conveying the separated quartz granules to a supply container and-conveying the active binding substance to a filter.
  • the separated quartz granules and the still active binding substance can be used again in the form of sand or core sand whereas the dust and burned binding substance is collected in the filter in the form of dust and waste.
  • the device for crushing the broken-off or knocked-out lumps or chips I is shown in the portion A of FIGS. 1 and 2.
  • This device comprises a round housing 2 which tapers in upward direction but may also be cylindrical and is closed by a cover 3 which is hinged to the housing and has an inlet opening 4 for the lumps and chips.
  • the bottom 5 of the housing has an opening 6 through which extends the shaft 8 of an electric motor 7.
  • the device is provided with a two-arm beater 9 the ends 10 and 11 of which are bentslightly downwardly and upwardly respectively'(see also FIG.-3).
  • the blades of the beater 9 are on a disc 12 provided with vanes 13 so that these members together with the bottom 5 form a blower.
  • a portion 14 of the wall of the housing 2 is provided with perforations 15 communicating with a collecting container 16.
  • the container 16 leads into an adjustable suction funnel 17 from which a suction conduit 18 leads to a centrifugal separator l9having connected thereto a container 20 and a filter 21.
  • the blades 9 which rotate at a high speed crush the lumps and chips 1 until they have reached a granular size which corresponds to the granules of the quartz sand and centrifuge the quartz granules through the openings I5 into the collecting container 16.
  • the bent blade ends 10, II will crush the lumps or chips which might get stuck in the dead corners I of the bottom of the housing.
  • the dustlike up to finest granular mass which is obtained during the crushing operation and which still contains active binding substance is conveyed through the perforations 15 into the container 16. This is effected additionally by the air flow which is produced by the blades. 13 while exerting a suction effect through the openings 6. This air flow also closes the housing 2 at the bottom 5 thereof.
  • the mass conveyed to the container 16 is drawn into the separator 19 through the funnel 17.
  • the separator 19 separates the mass on one hand into quartz granules and active binder substance which are collected in the container 20 for reuse, and on the other hand into dust and burned binder components which in the filter 21 are separated from the conveying air and are collected in the container 22.
  • the width of the outlet openings 15 of the housing 2 is selected in conformity with the hardness and the size of the obtained chips or lumps and in conformity with the quartz granules selected for the form or core sand.
  • the size and shape of the housing 2 and of the blades 9 as well as the speed of said blades and the circumference of the mantle section 14 of housing 2 which contains the outlet openings 15 may be selected in conformity with the desired output of the device.
  • the suction pipe 18 may be replaced by a conveying means, for instance, an additional blower, a bucket conveyor, or the like.
  • a device for regaining components of knocked-out mold and core sand pieces which includes: housing means having an inlet and bottom and also having a housing wall portion provided with perforations, rotatable-beater means arranged within said housing means adjacent said bottom for crushing knocked-out mold and core sand pieces fed into said housing means through said inlet, and for centrifuging granules and particles corresponding in size to the size of said perforations through the latter, collecting vessel means communicating with said perforations for collecting the crushed material passed from the inside of said housing means through said perforations, and separator means adapted to withdraw crushed material from said collecting vessel means 'and to separate sand granules from said withdrawn crushed material.
  • beater means include beater blades with upwardly and said vessel means and to convey said dustlike component from the crushed material received from said vessel means and to convey said dustlike component to said filters while conveying the remainder to said container means.
  • a device which includes suction funnel means interposed between said vessel means and said separator means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
US785630A 1967-12-21 1968-12-20 Device for regaining components of knocked-out mold and core sand and pieces Expired - Lifetime US3552662A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19671583540 DE1583540C (de) 1967-12-21 1967-12-21 Anlage zur Wiedergewinnung ausgeschla genen Form und Kernsandes

Publications (1)

Publication Number Publication Date
US3552662A true US3552662A (en) 1971-01-05

Family

ID=5679519

Family Applications (1)

Application Number Title Priority Date Filing Date
US785630A Expired - Lifetime US3552662A (en) 1967-12-21 1968-12-20 Device for regaining components of knocked-out mold and core sand and pieces

Country Status (4)

Country Link
US (1) US3552662A (enrdf_load_stackoverflow)
FR (1) FR1599372A (enrdf_load_stackoverflow)
GB (1) GB1237720A (enrdf_load_stackoverflow)
SE (1) SE354978B (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982702A (en) * 1975-03-06 1976-09-28 The Carborundum Company Sand lump grinder
FR2669553A1 (fr) * 1990-11-23 1992-05-29 Fischer Ag Georg Procede pour separer les particules de bentonite et de supports carbones de la poussiere obtenue par regeneration mecanique du sable usage.
DE19528348C1 (de) * 1995-08-02 1996-11-07 Daimler Benz Aerospace Ag Geschoß zum Vorgehen gegen lebende Ziele ohne letales Risiko für diese
US5839671A (en) * 1996-10-19 1998-11-24 Spectrasonic Disintegration Equipment Corp. Device and method for comminution
US20040113002A1 (en) * 2001-10-18 2004-06-17 Tessier Lynn P. Device and method for comminuting materials
US20070241219A1 (en) * 2001-10-18 2007-10-18 Aerosion Ltd. Apparatus and methodology for comminuting materials

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH631643A5 (de) * 1978-04-14 1982-08-31 Fischer Ag Georg Verfahren zur regenerierung von giesserei-altsand sowie einrichtung zur durchfuehrung des verfahrens und erzeugnis des verfahrens.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1977771A (en) * 1932-10-15 1934-10-23 Mcmahan Stanley Pulverizer
US2945633A (en) * 1955-12-19 1960-07-19 Microcyclomat Co Integrated dry material reducing and classifying means

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1977771A (en) * 1932-10-15 1934-10-23 Mcmahan Stanley Pulverizer
US2945633A (en) * 1955-12-19 1960-07-19 Microcyclomat Co Integrated dry material reducing and classifying means

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3982702A (en) * 1975-03-06 1976-09-28 The Carborundum Company Sand lump grinder
FR2669553A1 (fr) * 1990-11-23 1992-05-29 Fischer Ag Georg Procede pour separer les particules de bentonite et de supports carbones de la poussiere obtenue par regeneration mecanique du sable usage.
BE1005013A3 (fr) * 1990-11-23 1993-03-23 Fischer Ag Georg Procede pour separer les particules de bentonite et de supports carbones de la poussiere obtenue par regeneration mecanique du sable usage.
DE19528348C1 (de) * 1995-08-02 1996-11-07 Daimler Benz Aerospace Ag Geschoß zum Vorgehen gegen lebende Ziele ohne letales Risiko für diese
US5839671A (en) * 1996-10-19 1998-11-24 Spectrasonic Disintegration Equipment Corp. Device and method for comminution
US20040113002A1 (en) * 2001-10-18 2004-06-17 Tessier Lynn P. Device and method for comminuting materials
US7207513B2 (en) 2001-10-18 2007-04-24 Aerosion Ltd. Device and method for comminuting materials
US20070241219A1 (en) * 2001-10-18 2007-10-18 Aerosion Ltd. Apparatus and methodology for comminuting materials
US7530513B2 (en) 2001-10-18 2009-05-12 Aerosion, Ltd. Apparatus and methodology for comminuting materials

Also Published As

Publication number Publication date
GB1237720A (en) 1971-06-30
FR1599372A (enrdf_load_stackoverflow) 1970-07-15
SE354978B (enrdf_load_stackoverflow) 1973-04-02

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