EP0264597A2 - Dispositif doseur pour liants - Google Patents

Dispositif doseur pour liants Download PDF

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Publication number
EP0264597A2
EP0264597A2 EP87112864A EP87112864A EP0264597A2 EP 0264597 A2 EP0264597 A2 EP 0264597A2 EP 87112864 A EP87112864 A EP 87112864A EP 87112864 A EP87112864 A EP 87112864A EP 0264597 A2 EP0264597 A2 EP 0264597A2
Authority
EP
European Patent Office
Prior art keywords
metering
pressure
dosing device
suction
storage container
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.)
Granted
Application number
EP87112864A
Other languages
German (de)
English (en)
Other versions
EP0264597B1 (fr
EP0264597A3 (en
Inventor
Joachim Dipl.-Ing. Laempe
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.)
Dipl-Ing Laempe Firma GmbH
Original Assignee
Dipl-Ing Laempe Firma GmbH
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
Application filed by Dipl-Ing Laempe Firma GmbH filed Critical Dipl-Ing Laempe Firma GmbH
Priority to AT87112864T priority Critical patent/ATE49360T1/de
Publication of EP0264597A2 publication Critical patent/EP0264597A2/fr
Publication of EP0264597A3 publication Critical patent/EP0264597A3/de
Application granted granted Critical
Publication of EP0264597B1 publication Critical patent/EP0264597B1/fr
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
    • B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
    • B22C5/0409—Blending, mixing, kneading or stirring; Methods therefor
    • B22C5/0472—Parts; Accessories; Controlling; Feeding; Discharging; Proportioning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • B01F35/882—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances
    • B01F35/8822—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise using measuring chambers, e.g. volumetric pumps, for feeding the substances using measuring chambers of the piston or plunger type

Definitions

  • the invention relates to a metering device for binders intended for mixing core sand in goat shops, with a storage container for the binding agent and a conveying device, a selectively metered amount of the binding agent being conveyed from the storage container to a mixer, preferably by means of pressure and / or Gravity is transferred.
  • binders are added via metering pumps. Both diaphragm pumps and piston pumps are used. With the diaphragm pump, the metering takes place at a fixed frequency and a known stroke over the delivery time. With a piston pump, the number of piston strokes can also be measured directly.
  • a metering vessel with a fill level limiter is arranged between the storage container and mixer, and that at least one suction and / or pressure source can be connected to the metering vessel, which are connected to the metering vessel via overpressure or suction lines.
  • This construction largely decouples the pumping process from the dosing process.
  • a suction pump for example, a negative pressure can be generated in the metering vessel, so that this is filled via a suction line from the storage container to the amount set with the level limiter. By generating excess pressure, this metered quantity can then be fed to the mixer via a pressure line.
  • the level limiter has a float as a signal transmitter and at least one measuring sensor, sensor or the like as a signal recording device. It proves to be expedient if the float consists at least in part of permanent magnetic material and the signal recording device consists of at least one electromagnetically sensitive sensor. Thus, even during the measuring process, i.e. H. a mechanically mediated signal transmission can be dispensed with when the level is limited. Impairment of the level measurement by the chemically aggressive properties of the binder are therefore practically impossible.
  • the float expediently consists of titanium at least on its surface. This reliably prevents the risk of corrosion of the swimming surface.
  • the pressure or suction source is expediently connected to the fill level limiter.
  • the suction or pressure process can be controlled automatically.
  • High dosing accuracy can be achieved in particular by using high dosing vessels with a narrow cross-section.
  • the narrower the cross-section of the vessel the greater the measurable change in fill level when the fill volume changes by one volume unit.
  • the metering vessel which is preferably made of plastic, therefore expediently has a tubular cross section with a diameter of at most about 20 to 50 mm and a height of at least 0.2 to 1.0 m.
  • the single figure shows a system diagram of a metering device according to the invention with a metering vessel partially cut open and shown in perspective.
  • a metering device designated as a whole by 1, has a storage container 2 for the binder 3, which is transferred to a mixer 5 via a conveying device 4. Conveying device 4 and metering device 1 form a uniform system in the illustrated embodiment.
  • a metering vessel 6 which has an adjustable fill level limiter 7 consisting of several elements.
  • the metering vessel 6 is connected to the suction pump 10 or the pressure pump 11 via pressure 8 or suction lines 9.
  • the pump 10 is switched to the venting nozzle 13 via the valve 12 and in this way generates a negative pressure in the line 9.
  • Electromagnetic sensors 19 are attached to the outside of the metering vessel 6, which react to the change in the electromagnetic field by the float 6 and in this way measure at the level of the float 6 and thus the level of the fill level. They can be calibrated in a known manner so that they trigger a switching function when the fill level corresponding to their setting is reached and the valve 15 closes. In this way, any pre-set level in the dosing vessel can be reached.
  • the closure of the valve 15 can be coupled with an opening of the valve 20, through which compressed air or gas reaches the metering container 6 through the pressure pump 11.
  • the valve 17 When the valve 17 is closed and the valve 16 is open, the binder is conveyed from the metering vessel to the mixer 5.
  • the binder 3 does not come into contact with mechanically moving parts of the pump system. Therefore, the accuracy of the dosing process can practically not be impaired by pump malfunctions, even in continuous operation, as was the case with conventional systems.
  • the pumps 10, 11 are rather decoupled from the actual metering process and cannot be attacked by the chemically aggressive binder. In this way, a great accuracy of the dosage is possible.
  • a possible leakage of lines does not lead to a change in the dosing accuracy - as long as the suction or pressure process is not completely paralyzed - since the line functions are also decoupled from the dosing mechanism.
  • the entire system is therefore less susceptible to faults and more precise and also has a longer service life.
  • Floats 18 and electromagnetic sensors 19 of the level limiter 7 can also be replaced by other systems. So is possible.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Accessories For Mixers (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Nonmetallic Welding Materials (AREA)
  • Control Of Non-Electrical Variables (AREA)
EP87112864A 1986-10-18 1987-09-03 Dispositif doseur pour liants Expired - Lifetime EP0264597B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87112864T ATE49360T1 (de) 1986-10-18 1987-09-03 Dosiervorrichtung fuer bindemittel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3635539 1986-10-18
DE19863635539 DE3635539A1 (de) 1986-10-18 1986-10-18 Dosiervorrichtung fuer bindemittel

Publications (3)

Publication Number Publication Date
EP0264597A2 true EP0264597A2 (fr) 1988-04-27
EP0264597A3 EP0264597A3 (en) 1988-07-20
EP0264597B1 EP0264597B1 (fr) 1990-01-10

Family

ID=6312010

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87112864A Expired - Lifetime EP0264597B1 (fr) 1986-10-18 1987-09-03 Dispositif doseur pour liants

Country Status (6)

Country Link
US (1) US4828461A (fr)
EP (1) EP0264597B1 (fr)
AT (1) ATE49360T1 (fr)
DE (2) DE3635539A1 (fr)
ES (1) ES2012379B3 (fr)
GR (1) GR3000411T3 (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945955A (en) * 1988-03-23 1990-08-07 Burr-Brown Corporation Hazardous waste removal devices
DE4206477C2 (de) * 1992-03-02 1996-05-09 Blachowski Aribert Anordnung einer Dosiervorrichtung für z. B. einen flüssigen Katalysator zum Aushärten von Kernsand in einer Kernsand-Gießerei
US5664699A (en) * 1995-04-04 1997-09-09 Simpson Technologies Corporation Core sand preparation apparatus
FR2743750A1 (fr) * 1996-01-22 1997-07-25 Canon Kk Procede et dispositif de determination de la quantite de produit present dans un reservoir, notamment d'encre dans un dispositif de transfert d'image
US6254212B1 (en) 1996-01-22 2001-07-03 Canon Kabushiki Kaisha Method and device for determining the quantity of product present in a reservoir, notably that of ink present in an image forming device
JP3710230B2 (ja) 1996-10-04 2005-10-26 キヤノン株式会社 インク検出方法、およびインクジェット記録装置
US6224345B1 (en) * 1999-03-22 2001-05-01 Bijur Lubrication Corporation pressure/vacuum generator
ES1046844Y (es) * 2000-07-17 2001-07-01 Innovacio Tecnologica Catalana Inyector-dosificador volumetrico proporcional.
WO2013140001A1 (fr) * 2012-03-23 2013-09-26 Loramendi, S. Coop. Soupape anti-gouttes pour mélangeur de sable
US10280063B2 (en) 2016-02-19 2019-05-07 Alexander G. Innes Pressurized transfer device
EP2803425A1 (fr) * 2013-05-13 2014-11-19 Loramendi, S.COOP. Appareil de dosage et procédé de fonctionnement pour un appareil de dosage
CN103575366B (zh) * 2013-11-14 2016-04-06 中国神华能源股份有限公司 液体介质注满度检测装置
ES1100161Y (es) 2014-01-14 2014-05-08 Loramendi S Coop Aparato dosificador de aglomerante para un proceso de fabricación de núcleos de arena
CN104192786B (zh) * 2014-07-31 2017-04-26 安徽欣创节能环保科技股份有限公司 一种用于焦炉煤气输送系统防腐、除垢化学处理的添加剂添加装置及其使用方法
US10184496B2 (en) * 2016-12-06 2019-01-22 Airgas, Inc. Automatic pressure and vacuum clearing skid method
US10864640B1 (en) 2017-12-26 2020-12-15 AGI Engineering, Inc. Articulating arm programmable tank cleaning nozzle
US11031149B1 (en) 2018-02-13 2021-06-08 AGI Engineering, Inc. Nuclear abrasive slurry waste pump with backstop and macerator
US11413666B1 (en) 2018-02-13 2022-08-16 AGI Engineering, Inc. Vertical travel robotic tank cleaning system
US11577287B1 (en) 2018-04-16 2023-02-14 AGI Engineering, Inc. Large riser extended reach sluicer and tool changer
US10786905B1 (en) 2018-04-16 2020-09-29 AGI Engineering, Inc. Tank excavator
HUE068879T2 (hu) 2018-06-11 2025-01-28 Alex G Innes Programozható tisztítórendszer vasúti kocsi tartályához
US11267024B2 (en) 2018-06-11 2022-03-08 AGI Engineering, Inc. Programmable tank cleaning nozzle
US11571723B1 (en) 2019-03-29 2023-02-07 AGI Engineering, Inc. Mechanical dry waste excavating end effector
CN110253711A (zh) * 2019-07-30 2019-09-20 辽宁森远增材制造科技有限公司 喷墨式3d打印机固化剂供液系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7246462U (de) * 1974-05-30 Michel H Vorrichtung zum Dosieren der Bindemittelzugaben bei der Herstellung von Sandformen und -kernen für Giessereizwecke
US1323864A (en) * 1919-12-02 Arnold h
US2141427A (en) * 1937-08-03 1938-12-27 Raymond W Bryant Compressed air operated pump
US2400651A (en) * 1944-08-04 1946-05-21 Gresham & Craven Ltd Liquid elevating apparatus
US3005417A (en) * 1957-04-26 1961-10-24 United States Steel Corp Pneumatic system for pumping liquid
US3430929A (en) * 1967-11-16 1969-03-04 Southington Mfg Inc Continuous operation mulling apparatus and method for accurately proportioning foundry sand ingredients
US3556682A (en) * 1968-08-12 1971-01-19 Hitachi Ltd Apparatus for liquid displacement transfer
DE2262254A1 (de) * 1972-12-20 1974-06-27 Michel Horst Werner Verfahren und vorrichtung zum dosieren der bindemittelzugaben bei der herstellung von sandformen und -kernen fuer giessereizwecke
US3861830A (en) * 1973-09-17 1975-01-21 Ronald D Johnson Pressure differential pumping system for dry bulk products
JPS5523368A (en) * 1978-08-07 1980-02-19 Seiko Kakoki Kk Air pressure pump
DE2965758D1 (en) * 1978-11-21 1983-07-28 Jean Massaux Control device for displacement pumps
CH654755A5 (en) * 1981-12-18 1986-03-14 Werner Lueber Dosing appliance for a core-sand processing plant

Also Published As

Publication number Publication date
US4828461A (en) 1989-05-09
DE3761354D1 (de) 1990-02-15
ES2012379B3 (es) 1990-03-16
EP0264597B1 (fr) 1990-01-10
GR3000411T3 (en) 1991-06-28
DE3635539A1 (de) 1988-04-28
DE3635539C2 (fr) 1989-09-28
EP0264597A3 (en) 1988-07-20
ATE49360T1 (de) 1990-01-15

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