GB1288402A - - Google Patents

Info

Publication number
GB1288402A
GB1288402A GB4809169A GB4809169A GB1288402A GB 1288402 A GB1288402 A GB 1288402A GB 4809169 A GB4809169 A GB 4809169A GB 4809169 A GB4809169 A GB 4809169A GB 1288402 A GB1288402 A GB 1288402A
Authority
GB
United Kingdom
Prior art keywords
switches
water
drum
sand
fed
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
Application number
GB4809169A
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 filed Critical
Publication of GB1288402A publication Critical patent/GB1288402A/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Casting Devices For Molds (AREA)

Abstract

1288402 Controlling mixing by temperature and power consumption GEORG FISCHER AG 30 Sept 1969 [7 Oct 1968] 48091/69 Heading B1C [Also in Division G3] The moisture content of granular material, e.g. moulding sand, is controlled in a sand processing arrangement as shown by automatic adjustment of a valve 5 to control the amount of water added to sand in a mixing drum 1 via nozzle groups 2, 3, 4, and in dependence upon the temperature of sand being fed to the drum on a conveyor 13 and upon the mechanical load on the drum drive motor 17. The power input to the motor, or alternatively its drive torque, is determined by a transducer 18 as a measure of its mechanical load. The output of 18 is fed to a control device 19. The output of 19 is fed to a regulator device 16 together with a signal from a transducer 15 coupled to a temperature sensor 14. The regulator 16 accordingly operates on a positioning member 20 which adjusts the valve 5 to vary the total quantity of water/unit time delivered to the drum. A riser conduit 6 having upper and lower water level sensing switches 7, 8 respectively functions as a water pressure sensor. The switches 7, 8 in cooperation with a control device 9 operate to maintain the water inlet pressure to the nozzle groups 2, 3, 4 substantially constant between limits defined by the switches. Thus when the pressure is such that water level reaches switch 7, the control device 9 switches in one nozzle group and when the level falls to switch 8 the device 9 switches out a nozzle group. Thereby droplet size is said to be maintained substantially constant irrespective of water quantity being delivered.
GB4809169A 1968-10-07 1969-09-30 Expired GB1288402A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1493168A CH480105A (en) 1968-10-07 1968-10-07 Method for regulating the humidity of granular masses, in particular of molding sand and device for carrying out the method

Publications (1)

Publication Number Publication Date
GB1288402A true GB1288402A (en) 1972-09-06

Family

ID=4404953

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4809169A Expired GB1288402A (en) 1968-10-07 1969-09-30

Country Status (10)

Country Link
US (1) US3796412A (en)
AT (1) AT298701B (en)
BE (1) BE739649A (en)
CA (1) CA928930A (en)
CH (1) CH480105A (en)
DE (1) DE1947566C3 (en)
FR (1) FR2020023A1 (en)
GB (1) GB1288402A (en)
LU (1) LU59573A1 (en)
SE (1) SE369047B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144240A (en) * 1983-05-18 1985-02-27 Ready Mixed Concrete A system for controlling the mixing of concrete in a rotatable mixing drum
GB2171326A (en) * 1985-02-26 1986-08-28 Marshall Control Systems Limit Controlling mixing of slurries by power consumption
DE3608152A1 (en) * 1986-03-12 1987-09-24 Meyer Fa Rud Otto Method for regulating nozzle chambers having a plurality of individually disconnectable nozzle banks of air washers and apparatus for carrying out the method

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1291691A (en) * 1970-01-07 1972-10-04 Materials & Methods Ltd Improvements in or relating to the preparation and control of foundry moulding sands
US4193700A (en) * 1979-01-02 1980-03-18 Peter Fahrni Continuous-flow mixer for the gluing of loose chips of wood, fibers, or other particles
US4542041A (en) * 1983-02-16 1985-09-17 The Upjohn Company Apparatus for coating particulate material
US4516524A (en) * 1983-02-16 1985-05-14 The Upjohn Company Apparatus for coating particulate material
HU202127B (en) * 1988-06-08 1991-02-28 Mta Mueszaki Kemiai Kutato Int Device for producing granules by rolling-layer technology
US5116634A (en) * 1989-08-21 1992-05-26 Phoenix Park Systems Apparatus and method for consistent spray proportioning of liquid to dry material
DE4324101A1 (en) * 1993-07-17 1995-01-19 Uhde Gmbh Device for cooling foundry molding sand
US5678120A (en) * 1996-03-27 1997-10-14 Eastman Kodak Company Method and apparatus for processing a photosensitive material
DE102007027298A1 (en) 2007-06-11 2008-12-18 Maschinenfabrik Gustav Eirich Gmbh & Co. Kg Process for the treatment of foundry sand

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2954215A (en) * 1956-10-19 1960-09-27 Superlite Builders Supply Comp Moisture control apparatus
US3129928A (en) * 1961-06-16 1964-04-21 Butler Bin Company Water feed control system for concrete mixers
US3151368A (en) * 1961-08-21 1964-10-06 Dietert Co Harry W Rotary screen moldability controller
CH402293A (en) * 1963-05-02 1965-11-15 Fischer Ag Georg Device for uninterrupted processing of foundry sand
US3291304A (en) * 1965-04-12 1966-12-13 Joseph E Fuchs Process of reclaiming metallic particles from foundry sand

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144240A (en) * 1983-05-18 1985-02-27 Ready Mixed Concrete A system for controlling the mixing of concrete in a rotatable mixing drum
GB2171326A (en) * 1985-02-26 1986-08-28 Marshall Control Systems Limit Controlling mixing of slurries by power consumption
DE3608152A1 (en) * 1986-03-12 1987-09-24 Meyer Fa Rud Otto Method for regulating nozzle chambers having a plurality of individually disconnectable nozzle banks of air washers and apparatus for carrying out the method

Also Published As

Publication number Publication date
SE369047B (en) 1974-08-05
CA928930A (en) 1973-06-26
CH480105A (en) 1969-10-31
FR2020023A1 (en) 1970-07-10
DE1947566A1 (en) 1970-08-27
AT298701B (en) 1972-04-15
BE739649A (en) 1970-03-02
LU59573A1 (en) 1970-01-09
DE1947566B2 (en) 1973-03-08
US3796412A (en) 1974-03-12
DE1947566C3 (en) 1973-09-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee