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WO1996026017A1 - Tamis vibrant modulaire - Google Patents

Tamis vibrant modulaire Download PDF

Info

Publication number
WO1996026017A1
WO1996026017A1 PCT/BR1996/000005 BR9600005W WO9626017A1 WO 1996026017 A1 WO1996026017 A1 WO 1996026017A1 BR 9600005 W BR9600005 W BR 9600005W WO 9626017 A1 WO9626017 A1 WO 9626017A1
Authority
WO
WIPO (PCT)
Prior art keywords
screen
module
shafts
vibrator
vibrators
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.)
Ceased
Application number
PCT/BR1996/000005
Other languages
English (en)
Inventor
Andrzej Niklewski
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.)
Svedala Faco Ltda
Original Assignee
Svedala Faco Ltda
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 Svedala Faco Ltda filed Critical Svedala Faco Ltda
Priority to AU48724/96A priority Critical patent/AU4872496A/en
Publication of WO1996026017A1 publication Critical patent/WO1996026017A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • 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
    • B07B2201/00—Details applicable to machines for screening using sieves or gratings
    • B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens

Definitions

  • the present invention refers, in general, to a new construction for modular vibrating screens for separating bulk materials and, more particularly, for large vibrating screens provided with linear oscillating motion.
  • the linear oscillating motion of a vibrating screen with one or more overlying separating planes or decks is obtained by a pair of vibrators having eccentric rotating masses, always rotating in a synchronized way and in opposite directions, so that the forces generated towards the line that joins the centers of the vibrators are annulled, whereas in the direction perpendicular to this line said forces are summed, resulting in impulses that are always oriented in this direction, producing the linear motion of the screen body.
  • the mounting of the vibrators is conventionally carried out at the opposite sides of the screen body, so as to produce impulses oriented in an inclined direction, on a vertical plane, relative to the longitudinal shaft of the screen by an angle that varies according to the equipment design, usually around 60°.
  • FIG 1 of the attached drawings there is schematically illustrated an elevational lateral view of a vibrating screen of linear oscillating motion, provided with a pair of vibrators 10, whose horizontal shafts 11 are orthogonal to the longitudinal shaft of the screen body, each vibrator comprising two eccentric masses 12, each positioned externally to one of the sides of the screen and interconnected by respective shafts, which are transversal to the screen body and supported on the latter through bearings 15, as shown in figure 2.
  • the impulses of the synchronized eccentric forces occur according to the inclined directions represented by the parallel lines X.
  • the synchronization of the shafts 11 is assured by a gearing system.
  • figure 3 which is similar to figure 1, it has been more common to use the phenomenon, of self-synchronization of the masses 12 of the pair of vibrators 10, in order to eliminate the synchronizing gears 13.
  • the vibrators further comprise horizontal shafts 11 transversal to the longitudinal shaft of the screen body, but said shafts are disposed away from the center of gravity M of the screen assembly.
  • the effect of self-synchronization of the eccentric masses generates a linear oscillating motion according to a direction y that passes by the center of gravity M of the screen assembly and by the median point of the distance between the shafts 11 of the vibrators.
  • This disposition of longitudinal inclined shafts allows the achievement of a higher operational stability in terms of direction and linear oscillation of the screen, as well as the self-synchronization of the eccentric masses of both vibrators, without requiring any mechanical connection therebetween, except the one provided by the structure of the screen body itself.
  • the distribution of the material on the screen deck is in this case of little importance in the stability of the linear oscillating motion of the screen.
  • the vibrators with longitudinal inclined shafts have serious limitations regarding their application in small screens, since the strong forces to be generated by the dimensioning of the eccentric masses, which are necessary to move the heavy screens, make difficult and complex the solution of the structural problems of the screen, as well as the construction and fixation of the vibrator itself. Disclosure of the Invention
  • a modular vibrating screen comprising at least two longitudinally aligned modules, each module integrally defining a portion of the longitudinal extension of the screen, each lateral wall of each module supporting a vibrator, whose actuation is individual, independent and self- synchronized with the opposite vibrator, the rotating shafts of the eccentric masses of each pair of vibrators being mutually coplanar and disposed on vertical planes which are parallel to each other and to the longitudinal axis of the module, said shafts being inclined in relation to said longitudinal axis of the respective screen module.
  • the construction of the screen in modules allows to mount the equipment assembly, so that the latter can work with the production characteristics of the large equipments through vibrators presenting a stable operation in terms of oscillation, as well as a relatively small dimension, providing the consequent advantages relating to operation and assembly, since each pair of vibrators is dimensioned to produce the linear oscillating motion only of the respective screen module.
  • Fig. 1 shows, schematically, an elevational lateral view of a vibrating screen of linear oscillating motion and known construction, which is provided with a pair of vibrators with horizontal shafts perpendicular to the longitudinal shaft of the screen,- Fig. 2 shows a schematic upper view of the known construction illustrated in figure 1;
  • FIG. 1 shows, schematically, an elevational lateral view similar to that of figure 1, but illustrating a construction in which the shafts of both vibrators are located away from the center of gravity of the screen assembly;
  • FIG. 1 show, schematically and respectively, an elevational lateral view and an upper plan view of a vibrating screen of linear oscillating motion in another known construction, in which there is affixed, on each side of the screen, a vibrator with a shaft which is inclined but parallel to the longitudinal shaft of the screen,-
  • Fig. 6 shows a rather schematic perspective view of a modular vibrating screen constructed according with the present invention and which is formed by the longitudinal alignment of a plurality of screen modules;
  • Fig. 7 illustrates a perspective view of one of the screen modules of the construction illustrated in the previous figure. Best Mode for Carrying Out the Invention Since the constructive characteristics of the prior art have already been discussed in the introduction of this disclosure and illustrated in figures 1 - 5, they will not be discussed again.
  • the vibrating screen of the present invention consists of one or more longitudinally aligned modules 30, each module defining integrally only a portion of the minimum longitudinal extension that the screen must present in order to operate as a screening unit.
  • the present invention allows all screens to be substituted by an equivalent number of longitudinally aligned screen modules, each module defining only a portion of the length of each individual screen of the conventional constructions, but having a width which is equal to that of the screen.
  • the length of each screen module 30 is smaller than its width. The width/length dimensional relation may even be smaller than the equipment in situations in which the whole dimensioning of the screen accepts, without any relevant structural and constructive problems, a reduced number of modules to form the screening equipment.
  • each module 30 may have multiple overlying separating decks 35, each separating deck 35 having a portion 36 of its extension forwardly projecting from one of the end edges of the module 30, so as to be projected beyond the opposite end edge of the module 30 immediately adjacent, allowing the non- screened material over the separating decks 35 of a module 30 to be discharged on the corresponding separating decks 35 of the module 30 disposed immediately downstream.
  • each module lateral wall 37 supports a vibrator 20, whose actuation is individual, independent and self- synchronized with the vibrator mounted at the opposite lateral wall 37 of the module 30.
  • each screen module receives an actuation which is dimensioned in function of the mass of the individual module and not of the whole screen assembly, allowing the use of vibrators which are relatively small and individually subdimensioned in relation to the overall production rate of the screen.

Landscapes

  • Combined Means For Separation Of Solids (AREA)

Abstract

Tamis vibrant modulaire servant à séparer des quantités importantes de produits en vrac, et comportant au moins deux modules (30) alignés l'un sur l'autre dans le sens longitudinal, chaque module (30) délimitant une partie monobloc de la longueur du tamis. Chaque paroi latérale (37) de chaque module (30) porte un organe vibrant (20) actionné individuellement, indépendamment et de manière synchronisée automatiquement par rapport à l'organe vibrant opposé (20). Les arbres rotatifs (21) des masses excentriques (22) de chaque paire d'organes vibrants (20) sont contenus dans un même plan, et chacun est contenu dans un plan vertical parallèle à celui de l'autre et à l'axe longitudinal du module, lesdits arbres (21) étant inclinés par rapport audit axe longitudinal du module de tamis (30) respectif.
PCT/BR1996/000005 1995-02-24 1996-02-15 Tamis vibrant modulaire Ceased WO1996026017A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU48724/96A AU4872496A (en) 1995-02-24 1996-02-15 A modular vibrating screen

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR9500893A BR9500893A (pt) 1995-02-24 1995-02-24 Peneira vibratória modular
BRPI9500893-4 1995-02-24

Publications (1)

Publication Number Publication Date
WO1996026017A1 true WO1996026017A1 (fr) 1996-08-29

Family

ID=4060823

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR1996/000005 Ceased WO1996026017A1 (fr) 1995-02-24 1996-02-15 Tamis vibrant modulaire

Country Status (3)

Country Link
AU (1) AU4872496A (fr)
BR (1) BR9500893A (fr)
WO (1) WO1996026017A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1008369C2 (nl) * 1998-02-20 1999-08-30 S D I Rentals B V Schudzeef.
CN113829539A (zh) * 2021-08-25 2021-12-24 汪傲 一种高性能改性塑料加工系统
CN118698870A (zh) * 2024-08-30 2024-09-27 河南科技学院 一种用于面粉精筛的粗颗粒震动筛分装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082657A (en) * 1976-01-19 1978-04-04 Gage Ernest L Separator apparatus
EP0081471A1 (fr) * 1981-12-07 1983-06-15 Trelleborg Ab Système de criblage
EP0185409A2 (fr) * 1984-11-19 1986-06-25 Flow Control Service B.V. Tamis vibrant
EP0316461A1 (fr) * 1987-11-13 1989-05-24 Institut Po Tscherna Metalurgia Tamis vibreur
US5273164A (en) * 1992-09-30 1993-12-28 Lyon John A Soil conditioning apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4082657A (en) * 1976-01-19 1978-04-04 Gage Ernest L Separator apparatus
EP0081471A1 (fr) * 1981-12-07 1983-06-15 Trelleborg Ab Système de criblage
EP0185409A2 (fr) * 1984-11-19 1986-06-25 Flow Control Service B.V. Tamis vibrant
EP0316461A1 (fr) * 1987-11-13 1989-05-24 Institut Po Tscherna Metalurgia Tamis vibreur
US5273164A (en) * 1992-09-30 1993-12-28 Lyon John A Soil conditioning apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1008369C2 (nl) * 1998-02-20 1999-08-30 S D I Rentals B V Schudzeef.
EP0937508A3 (fr) * 1998-02-20 1999-09-15 S.D.I. Rentals B.V. Tamis vibrant
CN113829539A (zh) * 2021-08-25 2021-12-24 汪傲 一种高性能改性塑料加工系统
CN113829539B (zh) * 2021-08-25 2023-08-22 广东铭恒科技实业有限公司 一种高性能改性塑料加工系统
CN118698870A (zh) * 2024-08-30 2024-09-27 河南科技学院 一种用于面粉精筛的粗颗粒震动筛分装置

Also Published As

Publication number Publication date
AU4872496A (en) 1996-09-11
BR9500893A (pt) 1997-04-29

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