EP0182831B1 - Installation et procede de triage de produits lourds, en particulier de pierres ou materiaux similaires, a partir de cereales et d'autres produits en vrac - Google Patents

Installation et procede de triage de produits lourds, en particulier de pierres ou materiaux similaires, a partir de cereales et d'autres produits en vrac Download PDF

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Publication number
EP0182831B1
EP0182831B1 EP85902511A EP85902511A EP0182831B1 EP 0182831 B1 EP0182831 B1 EP 0182831B1 EP 85902511 A EP85902511 A EP 85902511A EP 85902511 A EP85902511 A EP 85902511A EP 0182831 B1 EP0182831 B1 EP 0182831B1
Authority
EP
European Patent Office
Prior art keywords
vibrating tray
vibrating
tray
vibrating table
air
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
EP85902511A
Other languages
German (de)
English (en)
Other versions
EP0182831A1 (fr
Inventor
Roman Mueller
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.)
Buehler AG
Original Assignee
Buehler AG
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 Buehler AG filed Critical Buehler AG
Priority to AT85902511T priority Critical patent/ATE36472T1/de
Publication of EP0182831A1 publication Critical patent/EP0182831A1/fr
Application granted granted Critical
Publication of EP0182831B1 publication Critical patent/EP0182831B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B4/00—Separating by pneumatic tables or by pneumatic jigs
    • B03B4/02—Separating by pneumatic tables or by pneumatic jigs using swinging or shaking tables
    • 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
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
    • 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
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents

Definitions

  • the invention has for its object to develop a simply constructed stone reader, which works particularly economically with excellent cutting performance and in which the throughput is particularly large compared to the area of the vibrating tables.
  • the device according to the invention gives very excellent results with regard to the achievable selectivity of the individual fractions, plus a very good readout level and works with a previously unknown level of economy.
  • the device according to the invention it is possible to be able to work with a substantially increased throughput capacity (or with a given sieving performance with significantly less air expenditure) compared to previously known devices with the same table area, which results in an unprecedented economic efficiency when using this device.
  • the device has a relatively simple, uncomplicated structure, which also enables inexpensive manufacture.
  • Another, very particularly advantageous embodiment of the device according to the invention also consists in that the upper end of the upper layer table is ventilated and covered by a guide cover plate, which is arranged at a distance above the upper layer table, the distance between the guide cover plate and the surface of the upper one Shift table becomes larger towards the center of the upper shift table.
  • This allows the air passed through the vibrating table below the guide cover plate and flowing upward to be directed towards the center of the upper layer table (i.e. towards the interior of the device), which further supports layer formation. It has been shown to be particularly effective if the two vibrating tables have the same width and the short area for the diarrhea on the upper vibrating table and the discharge each extend over the entire width of the vibrating tables.
  • Optimal functioning of the upper vibrating table is also favored by the fact that it is finely perforated and has a smooth surface.
  • a strong inhibiting effect is achieved for the product layer lying directly on the upper vibrating table, as a result of which all heavy parts that enter the the layer below, prevented from flowing off quickly, cannot be returned to the upper layer either by the air or by the vibration movement.
  • the effect of the formation of an overlying layer is particularly favored, so that both the amount of air required and the vibration energy can be optimally used. From this, however, the advantage of a maximum utilization of the vibrating table area in the sense of a substantially greater throughput capacity for a given area can be achieved.
  • the device according to the invention it is possible to layer the material on the upper vibrating table over its entire length and at its lower end a portion of 20% to 80% (weight%) of the material flow, in which almost all of the heavy material is located, subtract and throw off as a good supply to a middle area of the lower vibrating table.
  • the device according to the invention places the function of stone selection in the foreground, but also enables a second function, namely that of light grain selection, and all in a surprisingly simple and economical way economic ways.
  • the device according to the invention ensures that the light material fraction is already drawn off at the upper vibrating table and is no longer thrown downwards.
  • a stratification takes place again on the lower vibrating table, but this can then only be carried out with the lower, namely the proportion of the original material flow thrown downwards. Since a product stream with a relatively large proportion of heavy constituents is thrown onto the lower vibrating table, the relatively light parts are also very quickly transferred to a layer which forms above the heavier parts and which floats to the lower end of the lower table and thus relatively quickly directed to the outlet for the grain.
  • the product to be treated is fed directly to the upper vibrating table 2 via a product inlet 6 and a transition piece 8 at the top left, with a guide cover plate directly after the product inlet 6 and at a distance above the upper vibrating table 2 9 is arranged, which together with the upper vibrating table 2 forms a feed can 10, the cross section of which increases in the direction of the center of the upper vibrating table 2.
  • the stone reading table 1 and the layer table 2 are arranged essentially parallel to one another and at an angle a to the horizontal in a corresponding common inclined position.
  • the slide 19, on the other hand, has an angle ⁇ to the horizontal which is chosen such that the slide 19 still has at least a slight inclination to the horizontal at all conceivable inclined positions of the two vibrating tables 1 and 2.
  • the device at the product inlet 6 has a product control flap 40, which regulates itself via a lever 41 and a spring 42 in such a way that the flow is open in the presence of a certain amount of product, but the passage is closed in the absence of sufficient product is. This can prevent any unwanted air entry at this point.
  • the overall structure of the lower vibrating table 1 represents a resistance to the air flowing through which is almost independent of the thickness of the material layer lying on the lower vibrating table 1 and essentially the same over the total area of the lower vibrating table 1.
  • This can also be favored by the fact that the perforation in the finely perforated plate 12 of the upper vibrating table 2 is chosen favorably.
  • an almost constant air resistance over the entire lower crop support can be achieved regardless of the local and current crop layer thickness the lower vibrating table 1 can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Processing Of Solid Wastes (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)

Claims (13)

1. Installation de séparation de produits lourds par triage, en particulier de pierres ou matériaux similaires, à partir de céréales et d'autres produits en vrac, comportant :
a) deux tables vibrantes (1,2) situées l'une au-dessus de l'autre, disposées de manière inclinée et traversées par le même écoulement d'air, tandis que :
b) il est disposé, au niveau de la table vibrante supérieure (2), une entrée de produit (6) et un élément de déversement (19) orienté vers une zone centrale (B) de la table vibrante inférieure et que
c) cette table vibrante inférieure (1) est agencée sous la forme d'une table d'épierrage, caractérisée en ce que :
d) les deux tables vibrantes (1, 2) comportent un entraînement commun (30),
e) la table vibrante supérieure (2) est agencée de manière permanente sous forme d'une table de stratification par couches, d'une façon telle qu'elle comporte, uniquement à son extrémité inférieure, une courte zone (11) constituant au maximum environ un cinquième de sa longueur totale et destinée au passage, par criblage, d'une couche de produit enrichie en produit lourd et
g) l'élément de déversement (19) prévu pour cette couche enrichie en produit lourd est disposé au-dessous de cette courte zone (11).
2. Installation suivant la revendication 1, caractérisée en ce que les deux tables vibrantes (1, 2) ont la même largeur, la courte zone (11) prévue sur la table supérieure (2) pour le passage, par criblage, de la couche enrichie en produit lourd et l'élément de déversement (19) s'étendant chacun sur toute la largeur des tables (1,2).
3. Installation suivant l'une des revendications précédentes, caractérisée en ce que la table vibrante inférieure (1) est constituée, en forme de sandwich, d'un support de produit laissant passer l'air (62), d'une tôle perforée (60) disposée à une certaine distance au-dessous de celui-ci et d'une structure compartimentée située entre cette tôle perforée (60) et ce support de produit (62).
4. Installation suivant l'une des revendications précédentes, caractérisée en ce que la courte zone (11) prévue pour le passage par criblage comporte des ouvertures de passage (17) offrant un diamètre qui est égal à un multiple de la granulométrie moyenne du produit lourd.
5. Installation suivant l'une des revendications précédentes, caractérisée en ce que la table vibrante supérieure (2) agencée sous la forme d'une table de stratification par couches est finement perforée et offre une surface lisse.
6. Installation suivant l'une des revendications précédentes, caractérisée en ce que la table vibrante inférieure (1) offre une surface rugueuse, en vue de favoriser un cheminement des éléments lourds vers la sortie située plus haut, sous l'effet du mouvement vibratoire à projection.
7. Installation suivant la revendication 6, caractérisée en ce que la table vibrante inférieure (1) est pourvue d'un support de matériau qui comporte un grillage à mailles fines laissant passer l'air (62), d'une façon telle qu'elle offre une résistance à l'air pratiquement constante sur tout le support de produit et indépendante de l'épaisseur de la couche de produit reposant sur elle.
8. Installation suivant l'une des revendications précédentes, caractérisée en ce que l'élément de déversement est un plan incliné (19), qui est incliné en sens opposé à l'inclinaison des tables vibrantes (1, 2) et se termine à une certaine distance au-dessus de la table vibrante inférieure (1 et en ce que la zone intermédiaire (B) de la table vibrante inférieure (1), vers laquelle est dirigé l'élément de déversement de la table vibrante supérieure (2), se trouve dans la région du tiers central de la table vibrante inférieure (1), considéré dans le sens longitudinal de celle-ci.
9. Installation suivant l'une des revendications précédentes, caractérisée en ce que l'extrémité supérieure de la table vibrante supérieure (2) est traversée par de l'air et est recouverte par une couverture de guidage en tôle (9) qui est disposée à une certaine distance au-dessus de cette table vibrante supérieure (2), la distance entre cette couverture (9) et la surface de cette table (2) devenant plus grande en direction du milieu de cette même table (2).
10. Installation suivant l'une des revendications précédentes, caractérisée en ce que la distance séparant la table vibrante inférieure (1) et la table supérieure (2) est comprise entre un cinquième et un dixième de la longueur de cette table supérieure (2), et le plan incliné est réalisé de façon à ne pas laisser passer l'air et se termine sensiblement à mi-hauteur entre la table vibrante inférieure et la table vibrante supérieure (2).
11. Installation suivant l'une des revendications précédentes, caractérisée en ce qu'un couteau séparateur de couches (18) est monté à l'extrémité inférieure de cette table vibrante supérieure (2).
12. Installation suivant l'une des revendications précédentes, caractérisée en ce que, à l'extrémité inférieure de la table vibrante supérieure (2), un conduit de sortie (56) est disposé pour le rejet de cette table, ce conduit débouchant dans une ouverture (57) d'une sortie de produit prévue pour le rejet de la table vibrante inférieure (1).
13. Installation suivant la revendication 12, caractérisée en ce qu'il est disposé, dans le conduit de sortie (56), un volet réglable (58) permettant de mélanger à volonté le rejet de la table vibrante supérieure (2) avec le rejet de la table vibrante inférieure (1) ou permettant d'évacuer séparément ces deux rejets.
EP85902511A 1984-05-08 1985-05-08 Installation et procede de triage de produits lourds, en particulier de pierres ou materiaux similaires, a partir de cereales et d'autres produits en vrac Expired EP0182831B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85902511T ATE36472T1 (de) 1984-05-08 1985-05-08 Vorrichtung und verfahren zum auslesen von schwergut, insbesondere steinen o.ae., aus getreide und anderen schuettguetern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2240/84 1984-05-08
CH224084 1984-05-08

Publications (2)

Publication Number Publication Date
EP0182831A1 EP0182831A1 (fr) 1986-06-04
EP0182831B1 true EP0182831B1 (fr) 1988-08-17

Family

ID=4229127

Family Applications (3)

Application Number Title Priority Date Filing Date
EP85810219A Expired EP0162014B1 (fr) 1984-05-08 1985-05-08 Dispositif et procédé de séparation de matières granuleuses
EP85901960A Expired EP0181353B1 (fr) 1984-05-08 1985-05-08 Dispositif et procede permettant le triage separatif du grain
EP85902511A Expired EP0182831B1 (fr) 1984-05-08 1985-05-08 Installation et procede de triage de produits lourds, en particulier de pierres ou materiaux similaires, a partir de cereales et d'autres produits en vrac

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP85810219A Expired EP0162014B1 (fr) 1984-05-08 1985-05-08 Dispositif et procédé de séparation de matières granuleuses
EP85901960A Expired EP0181353B1 (fr) 1984-05-08 1985-05-08 Dispositif et procede permettant le triage separatif du grain

Country Status (10)

Country Link
US (2) US4652362A (fr)
EP (3) EP0162014B1 (fr)
JP (2) JPH084780B2 (fr)
KR (1) KR900001435B1 (fr)
AT (1) ATE31254T1 (fr)
AU (1) AU569011B2 (fr)
BR (1) BR8506704A (fr)
DE (3) DE3561131D1 (fr)
SU (2) SU1480753A3 (fr)
WO (2) WO1985005049A1 (fr)

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DE19702738A1 (de) * 1997-01-27 1998-07-30 Heiner Dr Schwanz Pneumo - Separator
EP2520376A1 (fr) 2011-05-03 2012-11-07 Bühler AG Procédé et dispositif de fractionnement de produits en vrac

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DE19702738A1 (de) * 1997-01-27 1998-07-30 Heiner Dr Schwanz Pneumo - Separator
EP2520376A1 (fr) 2011-05-03 2012-11-07 Bühler AG Procédé et dispositif de fractionnement de produits en vrac
WO2012150239A1 (fr) 2011-05-03 2012-11-08 Bühler AG Procédé et dispositif de fractionnement d'une matière en vrac

Also Published As

Publication number Publication date
JPH0659463B2 (ja) 1994-08-10
EP0181353B1 (fr) 1988-06-01
US4913804A (en) 1990-04-03
ATE31254T1 (de) 1987-12-15
EP0182831A1 (fr) 1986-06-04
SU1480753A3 (ru) 1989-05-15
EP0181353A1 (fr) 1986-05-21
JPH084780B2 (ja) 1996-01-24
SU1477237A3 (ru) 1989-04-30
EP0162014A1 (fr) 1985-11-21
WO1985005050A1 (fr) 1985-11-21
AU4403985A (en) 1985-11-28
JPS61502041A (ja) 1986-09-18
AU569011B2 (en) 1988-01-14
WO1985005049A1 (fr) 1985-11-21
DE3562988D1 (en) 1988-07-07
DE3564386D1 (en) 1988-09-22
DE3561131D1 (en) 1988-01-21
JPS61502042A (ja) 1986-09-18
BR8506704A (pt) 1986-04-15
US4652362A (en) 1987-03-24
EP0162014B1 (fr) 1987-12-09
KR900001435B1 (ko) 1990-03-10
KR860700096A (ko) 1986-03-31

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