EP1062057A1 - Procede pour activer une monture de tamis avec des ultrasons - Google Patents

Procede pour activer une monture de tamis avec des ultrasons

Info

Publication number
EP1062057A1
EP1062057A1 EP99915549A EP99915549A EP1062057A1 EP 1062057 A1 EP1062057 A1 EP 1062057A1 EP 99915549 A EP99915549 A EP 99915549A EP 99915549 A EP99915549 A EP 99915549A EP 1062057 A1 EP1062057 A1 EP 1062057A1
Authority
EP
European Patent Office
Prior art keywords
sieve frame
screen
screen frame
sieve
frame
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
EP99915549A
Other languages
German (de)
English (en)
Other versions
EP1062057B1 (fr
Inventor
Harald Hielscher
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.)
Dr Hielscher GmbH
Original Assignee
Dr Hielscher GmbH
Dr Hielscher 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 Dr Hielscher GmbH, Dr Hielscher GmbH filed Critical Dr Hielscher GmbH
Publication of EP1062057A1 publication Critical patent/EP1062057A1/fr
Application granted granted Critical
Publication of EP1062057B1 publication Critical patent/EP1062057B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/50—Cleaning
    • B07B1/54—Cleaning with beating devices

Definitions

  • the invention relates to a method for exciting a screen frame with ultrasound according to the preamble of claim 1.
  • the known ultrasonic screening devices and screening processes consist essentially of a screen frame with an applied screen surface and an ultrasound source coupled to the screen frame via an ultrasound transducer, the transducer converting the high-frequency electrical vibrations into mechanical bending vibrations.
  • WO 94/27748 describes a device and a method for sieving, classifying, sifting, filtering or sorting substances with a sieve surface provided in a sieve frame and associated ultrasonic transducer, by means of which vibrations can be fed to the sieve surface.
  • the ultrasound transducer is assigned a resonator which is in contact with the sieve surface and which is matched to the resonance of the ultrasound transducer and can be set into bending vibrations by the latter.
  • the longitudinal vibrations generated by the sound transducer are converted into bending vibrations of the same frequency in the resonator bars arranged tangentially to the longitudinal direction of vibration.
  • a disadvantage of all known embodiments is that the large dimensions resulting from the "bending oscillator" principle of oscillation do not allow a sufficiently compact design of the screening device.
  • the object of the invention is to develop a method for exciting screen frames by means of ultrasound, with which a more compact design of screening devices than previously known is ensured.
  • the excitation of a sieve frame with ultrasound as a longitudinal oscillator ensures a flatter and thus more compact construction of sieve frames than sieve devices excited according to the bending oscillator principle.
  • the vibrating system to the element to be excited with the vibrations (for example screen frame) with a lateral offset, a compact design can be achieved in that the vibrating system is arranged under the screen frame.
  • ring shapes also elliptical shapes
  • the screen frame in particular if the excitation axis of the vibrating system is shifted into the plane of the screen frame transmitting the vibrations by means of a coupling element.
  • FIG. Shows a schematic representation of the ring-shaped screen frame with the ultrasound source.
  • a circular screen frame 1 is formed from an integer multiple of ⁇ / 2 elements, one of the ⁇ / 2 elements being formed by a coupling element 2.
  • the coupling element 2 consists of two ⁇ / 2 longitudinal oscillators 3, which are interconnected in their maximum amplitude.
  • An ultrasound generating system 4 (ultrasound transducer) is as a ⁇ / 2 longitudinal oscillator on the lower ⁇ / 2 longitudinal oscillator 3 of the coupling element
  • the high-frequency mechanical longitudinal vibrations generated by the ultrasonic transducer 4 are transmitted via the coupling Transfer element 2 to a sieve frame 1, propagate over the entire circumference according to diagram II of the figure and are evenly transmitted to the sieve fabric (not shown).
  • Diagram I of the figure shows the course of oscillation in transducer 4 and in coupling element 2.
  • Diagram II shows the course of oscillation in sieve frame 1, the amplitude quantity a being plotted over the location of vibration x in both diagrams 1, 11 of the figure. There is a vibration node at location x 0 .
  • a sieve applied to the sieve frame 1 is set into lateral movements which largely correspond to the sieve movements during manual sieving.
  • the excitation of the screening surface is offset by 90 °.

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Abstract

L'invention concerne un procédé permettant d'activer une monture de tamis avec des ultrasons. L'objectif de l'invention est de développer un procédé permettant d'activer un cadre de tamis avec des ultrasons, qui garantisse l'utilisation de dispositifs de tamisage d'une construction plus compacte que celles connues jusqu'ici. Cet objectif est atteint par le fait que la monture de tamis est activée en tant qu'oscillateur longitudinal. La monture de tamis (1) est activée en particulier par l'intermédiaire d'un élément d'activation (2) qui décale l'axe d'activation (5) du système osWillant (4) dans le plan (6) de la monture de tamis (1) transmettant les oscillations.
EP99915549A 1998-03-11 1999-03-09 Procede pour activer une monture de tamis avec des ultrasons Expired - Lifetime EP1062057B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19811266A DE19811266C1 (de) 1998-03-11 1998-03-11 Verfahren zum Anregen eines Siebrahmens mit Ultraschall
DE19811266 1998-03-11
PCT/EP1999/001494 WO1999046061A1 (fr) 1998-03-11 1999-03-09 Procede pour activer une monture de tamis avec des ultrasons

Publications (2)

Publication Number Publication Date
EP1062057A1 true EP1062057A1 (fr) 2000-12-27
EP1062057B1 EP1062057B1 (fr) 2002-06-19

Family

ID=7861004

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99915549A Expired - Lifetime EP1062057B1 (fr) 1998-03-11 1999-03-09 Procede pour activer une monture de tamis avec des ultrasons

Country Status (6)

Country Link
EP (1) EP1062057B1 (fr)
JP (1) JP2002505954A (fr)
KR (1) KR100462351B1 (fr)
CN (1) CN1138601C (fr)
DE (2) DE19811266C1 (fr)
WO (1) WO1999046061A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9822880D0 (en) * 1998-10-21 1998-12-16 Russel Finex Improved efficiency ultrasonic sieving apparatus
JP2002011409A (ja) * 2000-06-30 2002-01-15 Honda Electronic Co Ltd 超音波フルイ装置
US7017754B2 (en) 2002-11-21 2006-03-28 Hitachi Metals, Ltd. Method and apparatus for classifying fine balls and method for producing cylindrical sieve
CN100414830C (zh) * 2003-08-26 2008-08-27 财团法人工业技术研究院 可调负重的表面声波致动装置
JP4402966B2 (ja) * 2004-01-22 2010-01-20 新日本製鐵株式会社 超音波角形篩装置
JP4521599B2 (ja) * 2004-11-08 2010-08-11 本多電子株式会社 ふるい装置
JP4729385B2 (ja) * 2005-11-08 2011-07-20 株式会社村上精機工作所 振動ふるい装置
EP2067534A1 (fr) * 2007-12-05 2009-06-10 Artech Systems AG Système de criblage doté d'un crible tubulaire et procédé de fonctionnement d'un système de criblage doté d'un crible tubulaire
EP3268137B1 (fr) 2015-03-10 2023-11-01 Telsonic Holding AG Système de tamisage, tamiseur tourbillonnaire et utilisation d'un système de tamisage ou d'un tamiseur tourbillonnaire
WO2016141971A1 (fr) * 2015-03-10 2016-09-15 Telsonic Holding Ag Système de tamisage, tamiseur tourbillonnaire et utilisation d'un système de tamisage ou d'un tamiseur tourbillonnaire

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062768A (en) * 1972-11-14 1977-12-13 Locker Industries Limited Sieving of materials
FR2682050B1 (fr) * 1991-10-08 1994-07-22 Chauvin Sarl Ets Dispositif de tamisage equipe de moyens de decolmatage.
US5653346A (en) * 1993-05-26 1997-08-05 Telsonic Ag Process and device for sifting, sorting, screening, filtering or sizing substances
DE4418175C5 (de) * 1993-05-26 2006-02-16 Telsonic Ag Vorrichtung und Verfahren zum Sieben, Klassieren, Sichten, Filtern oder Sortieren von Stoffen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9946061A1 *

Also Published As

Publication number Publication date
WO1999046061A1 (fr) 1999-09-16
CN1138601C (zh) 2004-02-18
DE19811266C1 (de) 1999-08-05
CN1292735A (zh) 2001-04-25
EP1062057B1 (fr) 2002-06-19
KR100462351B1 (ko) 2004-12-17
WO1999046061A8 (fr) 1999-10-21
KR20010034570A (ko) 2001-04-25
JP2002505954A (ja) 2002-02-26
DE59901794D1 (de) 2002-07-25

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