EP0736349B1 - Verfahren und Vorrichtung zum Kühlen und Homogenisieren von Giessereisand - Google Patents

Verfahren und Vorrichtung zum Kühlen und Homogenisieren von Giessereisand Download PDF

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Publication number
EP0736349B1
EP0736349B1 EP96104557A EP96104557A EP0736349B1 EP 0736349 B1 EP0736349 B1 EP 0736349B1 EP 96104557 A EP96104557 A EP 96104557A EP 96104557 A EP96104557 A EP 96104557A EP 0736349 B1 EP0736349 B1 EP 0736349B1
Authority
EP
European Patent Office
Prior art keywords
housing
sand
conveyor
water
reduced pressure
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
EP96104557A
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German (de)
English (en)
French (fr)
Other versions
EP0736349A2 (de
EP0736349A3 (de
Inventor
Ernst O. Dipl.-Ing. Kruse
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.)
Maschinenfabrik Gustav Eirich GmbH and Co KG
Original Assignee
Maschinenfabrik Gustav Eirich GmbH and Co KG
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7758751&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0736349(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Maschinenfabrik Gustav Eirich GmbH and Co KG filed Critical Maschinenfabrik Gustav Eirich GmbH and Co KG
Publication of EP0736349A2 publication Critical patent/EP0736349A2/de
Publication of EP0736349A3 publication Critical patent/EP0736349A3/de
Application granted granted Critical
Publication of EP0736349B1 publication Critical patent/EP0736349B1/de
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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
    • B22C5/08—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

Definitions

  • DE-A-3 006 552 describes a cooling device in which two containers alternately filled with moistened hot old sand and placed under vacuum. The moisture in the sand evaporates and extracts the heat of vaporization from the sand.
  • a disadvantage of this method is the fact that the intermittent operation has two evacuation containers required and the vacuum in the rather large containers is continuously built up and broken down must become. The energy consumption and space requirements of such a system are therefore very high large.
  • DE-A-2 952 403 describes a molding sand mixer whose mixing space is evacuated during the mixing process, so that heat of vaporization is also removed here becomes.
  • the ratio of the evacuation volume to the amount of sand is also in this method very unfavorable; because here too the vacuum has to be built up and broken down with every mixing cycle become.
  • the normal mixing cycle must also be extended considerably, so that here too Energy and investment costs turn out unfavorable.
  • the hot sand 2 enters the conveyor belt 1 Lock 3.
  • An airtight, switching flap operated by a motor 3.1 directs the sand into the left lock chamber 3.2, which is also driven by a motor operated and airtight closing flap 3.6 is closed below. If the stuffing like that has risen so far that the probe 3.4 is reached, the flap 3.7 closes automatically. Now the pressure compensation valve 25.1 opens for a few seconds. Immediately afterwards, the Flap 3.1 automatically pivoted to the left, so that now the right chamber 3.3 is filled. After switching flap 3.1, the lower flap 3.6 is opened, see above that the sand from the chamber 3.2 in the mixing and conveying device 4 and thus in the evacuated room.
  • the mixing and cooling device 4 consists, for example, of a tubular one Housing 5, in the central axis of which rotates a shaft 7 driven by a motor 6, the is equipped with blades 8 inclined predominantly in the conveying direction.
  • the inlet nozzle 9 probes for detecting the temperature 10 and the residual moisture of the sand 11 are arranged. Temperature and residual moisture are evaluated in a computer, and its result is used to control the control valve 12 for the water supply 13.
  • the water vapor generated by the negative pressure is discharged through the suction nozzle 14 sucked into the condenser 15, which is constantly by a vacuum pump 16 on a Vacuum of 1300 to 2000 Pa (10 to 15 Torr) is maintained.
  • the condensed water 17 is partially returned to the condenser with a circulating pump 18 through a cooler 19 and partially used to moisten the sand.
  • a level probe 20 controls the water level 17.
  • Control valves 12 and 21 control the amount of water required in each case, partly in circulation, partly with fresh water supply from the network.
  • the cooled sand falls into the left chamber 23.2, while the right chamber 23.3 is emptied onto a conveyor belt 24 through the lower flap 23.7. If the probe 23.4 from Sand reached, the lower flap 23.7 closes, the pressure compensation valve 26 opens for some Seconds, and the flap 23.1 swings to the left, so that now the right Chamber 23.3 is filled. Then the pressure compensation valve 26.1 opens first and then the lower flap 23.6 so that the sand falls onto the conveyor belt 24. This lock too works fully automatically in constant change.
  • FIG. 2 there are two mixing and conveying devices intended.
  • the hot sand is moistened in the first mixing and conveying device 27 and homogenized and thus passes through the two-chamber lock 3 in the second mixing and Conveyor 28, which is constantly under vacuum in the manner described above.
  • the Evaporation heat is supplied to the condenser 15 in the manner described above, the condensed water in the cooler is recooled and reused.
  • Fig. 2 have the same parts the same reference numerals as in FIG. 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
EP96104557A 1995-04-04 1996-03-22 Verfahren und Vorrichtung zum Kühlen und Homogenisieren von Giessereisand Expired - Lifetime EP0736349B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19512593A DE19512593A1 (de) 1995-04-04 1995-04-04 Verfahren und Vorrichtung zum Kühlen von Gießereisand
DE19512593 1995-04-04

Publications (3)

Publication Number Publication Date
EP0736349A2 EP0736349A2 (de) 1996-10-09
EP0736349A3 EP0736349A3 (de) 1997-05-07
EP0736349B1 true EP0736349B1 (de) 1999-07-28

Family

ID=7758751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96104557A Expired - Lifetime EP0736349B1 (de) 1995-04-04 1996-03-22 Verfahren und Vorrichtung zum Kühlen und Homogenisieren von Giessereisand

Country Status (10)

Country Link
US (1) US5915833A (es)
EP (1) EP0736349B1 (es)
JP (1) JP4055830B2 (es)
CZ (1) CZ294324B6 (es)
DE (2) DE19512593A1 (es)
DK (1) DK0736349T3 (es)
ES (1) ES2133858T3 (es)
IN (1) IN187705B (es)
PL (1) PL180654B1 (es)
RU (1) RU2137569C1 (es)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001021341A1 (de) * 1999-09-23 2001-03-29 Maschinenfabrik Gustav Eirich Verfahren zur aufbereitung von giessereiformsand und vorrichtung hierfür
DE19958591A1 (de) * 1999-12-06 2001-06-07 Fischer Georg Disa Eng Ag Verfahren zum Bearbeiten und Transportieren von Sand
WO2002074467A1 (de) 2001-03-20 2002-09-26 Nv Engineering Gmbh Verfahren und vorrichtung zur kühlenden aufbereitung von warmen schüttgütern

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3582690B2 (ja) * 1997-10-09 2004-10-27 新東工業株式会社 生型用鋳物砂の調製方法
US6367959B1 (en) * 2000-02-19 2002-04-09 General Kinematics Corporation Method and apparatus for blending water with sand
DE10030675A1 (de) * 2000-06-23 2002-01-03 Eirich Maschf Gustav Verfahren und Vorrichtung zur Aufbereitung von Formsand
US20060221764A1 (en) * 2005-03-17 2006-10-05 Everett Steve E Method and system for preparing input material for structural building blocks
CN104338895B (zh) * 2013-07-31 2017-06-13 泰州市美鑫铸造有限公司 V法铸造铸沙回收装置
DE102014117509A1 (de) * 2014-11-28 2016-06-02 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Vorrichtung zur Aufbereitung und Kühlung von Gießereiformsand
CN104841879B (zh) * 2015-05-12 2016-08-31 共享装备有限公司 铸造树脂灰负压输送系统
BR112018013885A2 (pt) * 2016-01-06 2018-12-18 Oren Technologies, Llc transportador, sistema e método coletor de poeira integrado, caixa de captura e conjunto de cobertura
CN106077448A (zh) * 2016-08-10 2016-11-09 禹州市昆仑模具有限公司 一种覆膜砂再生方法
KR101950029B1 (ko) * 2017-06-13 2019-04-29 한국생산기술연구원 폐주물사 재생장치 및 이를 이용하는 폐순환 사재생 주물제조 시스템
CN113399621A (zh) * 2021-06-23 2021-09-17 河南省德强实业有限公司 全自动砂处理系统

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2585739A (en) * 1950-03-29 1952-02-12 Joseph D Christian Cooling off of sand and gravel
DE1219182B (de) * 1963-08-23 1966-06-16 Ubbink Gieterij N V Verfahren und Vorrichtung zur Kuehlung von Formsand
CA1096132A (en) * 1977-01-21 1981-02-24 Albert Musschoot Method and apparatus for reclaiming foundry sand
US4252001A (en) * 1977-01-21 1981-02-24 Musschoot A Method and apparatus for cooling foundry sand
US4611469A (en) * 1977-01-21 1986-09-16 General Kinematics Method and apparatus for cooling foundry sand
US4361405A (en) * 1980-12-18 1982-11-30 Alfelder Maschinen-Und Modell-Fabrik Kunkel, Wagner & Co. K.G. Method and apparatus for preparing, more particularly for the cooling and mixing of moulding sand
JPS60151650U (ja) * 1985-02-02 1985-10-08 株式会社　喜多村合金製作所 鋳物砂の急速除湿乾燥装置
DE4109136C2 (de) * 1990-03-20 1994-01-13 Kuettner Gmbh & Co Kg Dr Verfahren und Vorrichtung zum Aufbereiten schadstoffbelasteter Abfallstoffe
JP2982629B2 (ja) * 1994-09-30 1999-11-29 マツダ株式会社 鋳物砂の混練調整方法及びその装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001021341A1 (de) * 1999-09-23 2001-03-29 Maschinenfabrik Gustav Eirich Verfahren zur aufbereitung von giessereiformsand und vorrichtung hierfür
US6926063B1 (en) * 1999-09-23 2005-08-09 Maschinenfabrik Gustav Eirich Method for conditioning foundry moulding sand and a device therefor
DE19958591A1 (de) * 1999-12-06 2001-06-07 Fischer Georg Disa Eng Ag Verfahren zum Bearbeiten und Transportieren von Sand
WO2002074467A1 (de) 2001-03-20 2002-09-26 Nv Engineering Gmbh Verfahren und vorrichtung zur kühlenden aufbereitung von warmen schüttgütern

Also Published As

Publication number Publication date
PL313611A1 (en) 1996-10-14
JP4055830B2 (ja) 2008-03-05
CZ294324B6 (cs) 2004-11-10
IN187705B (es) 2002-06-08
US5915833A (en) 1999-06-29
JPH08300098A (ja) 1996-11-19
DK0736349T3 (da) 1999-11-29
RU2137569C1 (ru) 1999-09-20
CZ97596A3 (en) 1996-10-16
EP0736349A2 (de) 1996-10-09
PL180654B1 (pl) 2001-03-30
ES2133858T3 (es) 1999-09-16
DE19512593A1 (de) 1996-10-10
EP0736349A3 (de) 1997-05-07
DE59602512D1 (de) 1999-09-02

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