EP1210987B1 - Dispositif pour obtenir des fractions grosses et fines à partir d' un mélange de sable - Google Patents

Dispositif pour obtenir des fractions grosses et fines à partir d' un mélange de sable Download PDF

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Publication number
EP1210987B1
EP1210987B1 EP01128216A EP01128216A EP1210987B1 EP 1210987 B1 EP1210987 B1 EP 1210987B1 EP 01128216 A EP01128216 A EP 01128216A EP 01128216 A EP01128216 A EP 01128216A EP 1210987 B1 EP1210987 B1 EP 1210987B1
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EP
European Patent Office
Prior art keywords
housing
drum
sieve
sieve drum
end wall
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 - Lifetime
Application number
EP01128216A
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German (de)
English (en)
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EP1210987A2 (fr
EP1210987A3 (fr
Inventor
Wolfgang Branner
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.)
Huber SE
Original Assignee
Hans Huber AG Maschine und Anlagenbau
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.)
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Publication of EP1210987A2 publication Critical patent/EP1210987A2/fr
Publication of EP1210987A3 publication Critical patent/EP1210987A3/fr
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Publication of EP1210987B1 publication Critical patent/EP1210987B1/fr
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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
    • B07B1/18—Drum screens
    • B07B1/22—Revolving drums
    • B07B1/24—Revolving drums with fixed or moving interior agitators
    • 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
    • B07B1/55—Cleaning with fluid jets

Definitions

  • the invention relates to a device for processing a sand mixture.
  • the sand mixture is divided into at least two fractions, in particular a fine fraction and a coarse fraction.
  • a motor drives a sieve drum.
  • the sieve drum has an upper and a lower end wall and a cylinder jacket-shaped sieve wall with openings for the passage of the fine fraction.
  • the device and thus also the screen drum is arranged with an obliquely upward axis, so that the sand mixture enters obliquely upward in the screen drum.
  • the fine fraction passes through the perforations in the sieve wall, while the coarse fraction emerges at the upper end of the sieve drum.
  • the sieve drum is supplied as a sand mixture in particular channel sand, street sweeper and / or sewage treatment plant sand.
  • a device of the type described above is known from the advertising of the applicant "Sandaufleung with system", RoSF, 8.1997.
  • the sand mixture which can change in its composition, is divided into a fine and a coarse fraction. Coarse particles with a diameter> 10 mm are separated in the coarse fraction.
  • the device consists essentially of a drum with a relatively large diameter, which has a cylinder jacket-shaped sieve wall with openings for the passage of the fine fraction.
  • the axis of the screen drum is arranged obliquely inclined, wherein the task end for the sand mixture is lower than the discharge end.
  • the sieve drum has an upper and a lower end wall. Both end walls are at least partially open.
  • the sand mixture is added, which is prewashed and homogenized in the sieve drum.
  • the coarse fraction emerges in the upper end region of the sieve drum.
  • This device is used at the beginning of a plant to perform the division of the sand mixture into a coarse fraction and a fine fraction.
  • the fine fraction is further treated in a sand washing plant, in which the organic matter is separated from the mineral fraction.
  • the sieve drum of the device is rotatably mounted on rollers.
  • the screen drum is provided on its outside with a sprocket. About an intervening chain and by means of a motor, the screen drum is rotated.
  • the task of the sand mixture prepares difficulties in this known device.
  • the feed is increasingly in liquid form via a pipeline and by means of a pump.
  • the pipeline ends in the central opening of the lower end wall of the sieve drum.
  • street sweepers, sewer cleaning sand and other sand mixtures are discharged into bunkers or deep shafts, from which they then have to be fed to the screen drum.
  • the device has an obliquely set in the channel, partially immersed in the liquid cylinder jacket-shaped grate.
  • the grate has a closed end wall in its upper area.
  • An end wall provided in the lower area upstream end wall is designed at least partially open.
  • This cylinder jacket-shaped grate is followed by a screw conveyor with a driven screw conveyor and a stationary arranged housing with which the computing and / or screenings is conveyed obliquely upwards.
  • the screw conveyor has at its lower end an insertion funnel.
  • the drive shaft of the screw conveyor of the screw conveyor extends into the grate and ends in a drive arm, which in turn is connected to the grate.
  • the grate is rotatably mounted with its provided in the upper region end wall on the housing of the screw conveyor.
  • On the inside of the sieve baffles are provided.
  • On the outside of the sieve a stationary removal device is provided to replace the adhering to the inside of the sieve screenings or screenings and throw it into the hopper of the screw conveyor. For dividing sand mixtures into two fractions, this device is not suitable.
  • the invention is based on the object, starting from the above-described problem, a device for processing a sand mixture in at least a fine and a coarse fraction in such a way that taken with her the sand mixture from a shaft or other lower-lying point in a simple manner and in at least two fractions can be divided.
  • a device of the type described above characterized in that the screening drum is penetrated by a drive shaft with which the Siebwandung the screen drum is rotatably connected in its upper region, that the drive shaft projecting counter to the conveying direction of the sand mixture through the sieve drum opposite the screen drum and part of an upstream screw conveyor with stationary arranged housing and arranged on the drive shaft conveyor spiral is that the lower end wall of the screen drum is rotatably mounted on the housing of the screw conveyor, and in that Inside the screen wall at least one thread-like arranged baffle is provided.
  • the sieve drum is penetrated over its entire length by a drive shaft.
  • a motor usually with the interposition of a reduction gear, placed, with which the drive shaft is driven.
  • the upper end wall of the screen drum is rotatably connected to the drive shaft, wherein the upper end wall may be formed closed or partially open. Also by an arrangement of arms can be achieved that the rotary drive can be transmitted from the drive shaft to the screen drum and thus ultimately on the screen wall.
  • the screen drum is also preceded by a screw conveyor, wherein the drive shaft for the screen drum also serves as the drive shaft of the screw conveyor. For this purpose, the drive shaft protrudes beyond the front lower end wall of the screen drum projecting and is provided in this area with the conveyor coil.
  • the conveyor coil is in turn surrounded by a stationary housing of the screw conveyor.
  • only one drive motor for the screen drum and the conveyor spiral of the screw conveyor is required.
  • the Housing of the screw conveyor is designed to be open at its lower end. It can pass into a flange to which a pipeline can be connected. This is especially the case when the sand mixture is largely given up in liquid form.
  • the new device makes it possible to easily remove sands also from lower-lying shafts or bunkers and obliquely up to promote to such a height that the fractions formed in turn can be easily removed and fed to a further processing.
  • the device is relatively simple and has only a single drive, which is also housed protected at the top, without coming into contact with the sand mixture or the liquid.
  • the arranged on the inside of the screen drum baffle which may also be formed more or composed of partially arranged parts, exerts on the sand mixture an obliquely upward conveying action, the components of the sand mixture are offset in a rolling movement relative to the inside of the screen wall. By this rolling movement together sticking good is broken, whereby the division into the two fractions is favored.
  • the sand mixture is also partly taken, depending on the speed with which the screen drum is driven by the screen drum and / or the baffle and limited upwards, from where it then falls back down in the interior of the screen drum due to the gravitational force. This is associated with a corresponding break-up and cleaning effect.
  • the fine fraction and existing liquid pass through the openings in the sieve wall and are removed together. Only the coarse fraction, consisting of coarse matter exceeding a certain order of magnitude, are further upwardly conveyed and withdrawn separately from the fine fraction.
  • Another advantage is that the skew of the axis of the drive shaft, with which the device is arranged, can be easily changed and adapted to the application needs.
  • the device can also be with set up and operate horizontally aligned axis.
  • the sand mixture is safely introduced into the interior of the screen drum.
  • the thread-like arranged baffles exert a promotion function on the sand mixture and the fractions forming. Different angles of attack do not change the operation of the device.
  • the screen drum advantageously has a substantially larger diameter than the screw conveyor. This makes it possible, on the one hand, to provide a relatively large area of the sieve wall and, on the other hand, to keep the upstream screw conveyor small in its diameter, ie to reduce the effort required for this purpose. At the same time there is the possibility of forming the housing of the screw conveyor as a bearing for the lower end wall of the screen drum. As it were, the introduction of the sand mixture into the interior of the sieve drum is achieved as it were.
  • the sieve drum is surrounded by a stationary housing, which has a discharge pipe for the fine fraction in the lower area and a discharge pipe for the coarse fraction in the upper area.
  • a stationary housing which has a discharge pipe for the fine fraction in the lower area and a discharge pipe for the coarse fraction in the upper area.
  • the space between the sieve drum and the housing can be used to form at least one fraction.
  • the arrangement of the housing allows the accommodation of other elements, such as one or more spray bars, which may be filled with nozzles.
  • the stationary housing surrounds the screen drum at a distance and in an eccentric arrangement.
  • a spray bar for removing sand mixture from the inside of the screen drum is provided in the upper area between the housing and the screen drum.
  • the spray bar is connected to a spray water supply, so that is sprayed from the outside of the screen drum spray water, which on the inside of the At the same time, at least some of the screen drum adheres to the adhering material and thereby at least partially passes into the interior of the screen drum, so that the spray water also serves as washing water for the sand mixture. In the lower part of the sieve drum, this washing water passes through the openings in the sieve wall and is withdrawn together with the fine fraction.
  • the screen drum may have at least one radially arranged outlet for the passage of the coarse fraction.
  • the radially arranged outlet is thus provided in the region of the cylinder jacket-shaped screen wall. Since thus such an outlet is also driven circumferentially, the coarse fraction is discharged in batches. This has the advantage that the upper end wall of the screen drum and the stationary housing end wall can be formed continuously.
  • the drive shaft may be formed hollow at least over part of its length, provided with radial bores in the region of the sieve drum and connected to a spray water supply.
  • a plurality of rollers distributed over the circumference may be provided, which roll on the housing of the screw conveyor.
  • the storage of the sieve drum in its lower region is particularly simple and inexpensive to implement.
  • the upper end wall of the screen drum may have a first opening and the stationary housing in the region of a housing end wall having a second opening through which the coarse fraction emerges axially. So that's an axial exit realized, and the Siebwandung is used on its full axial length for the division of the sand mixture in the fine and in the coarse fraction.
  • the sieve wall of the sieve drum advantageously has circular openings with a diameter of 10 mm. This determination of the particle sizes of the two fractions is useful if the fine fraction in a sand washing plant using a sand fluidized bed to be further purified and processed. In this way, a coarse fraction is kept away from the sand fluidized bed.
  • the openings in the Siebwandung the screen drum can be selected with other dimensions, if necessary to obtain a different application-specific distribution. It is also possible to provide the Siebwandung the screen drum partially covered with differently sized openings in order to z in this manner. B. to achieve a breakdown of the sand mixture in three or more fractions.
  • the lower end wall of the sieve drum can be expediently formed largely closed with a labyrinth seal.
  • a labyrinth seal allows a higher degree of filling of the screening drum, which is useful for some applications.
  • the device shown in Fig. 1 for processing a sand mixture has as an essential element a driven screen drum 1.
  • the screen drum 1 is housed in a stationary housing 2.
  • the screen drum 1 has an upper end wall 3 and a lower end wall 4.
  • the lower end wall 4 is formed in several parts.
  • a cylindrical sieve wall 5 which has openings 6 distributed over its axial length and distributed over the circumference.
  • the openings 6 are generally formed as a circular holes, but may also have a different design.
  • the perforations 6 in the sieve wall 5 have the same shape and dimensioning with each other when the sand mixture is to be divided only into a fine fraction and a coarse fraction.
  • the screen drum 1 encloses with its two end walls 3 and 4 and the Siebwandung 5 an inner space 7.
  • the baffles 9 are formed like a thread and extend correspondingly over the inner circumference of the screen wall 5. They extend inwardly to a certain depth in the interior 7 a.
  • the baffles 9 serve the promotion and processing of the sand mixture.
  • the screen drum 1 and the surrounding housing 2 are penetrated by a drive shaft 10.
  • the drive shaft 10 extends beyond the housing 2 at both ends.
  • the drive shaft 10 has an axis 11, which also forms the axis of the entire device.
  • the device and thus in particular the screen drum 1 is here with its axis 11 at an angle 12 of z. B. 35 ° inclined or installed.
  • the upper end wall 3 of the screen drum 1 is here as a continuous closed Disc trained.
  • the upper end wall 3 is rotatably connected to the drive shaft 10, for example, welded, so that the screen drum 1 is driven in this way via the drive shaft 10.
  • the stationary arranged housing 2 has an upper housing end wall 13 and a lower housing end wall 14. On the upper housing end wall 13, a bearing 15 for a reduction gear 16 and a motor 17 builds. There is a rotationally fixed connection to the drive shaft 10, so that in this way the screen drum 1 is driven to rotate.
  • the drive shaft 10 also extends beyond the lower housing end wall 14 and stands there considerably over. It is here a screw conveyor 18 is formed and provided, which has a tubular stationary arranged housing 19, which passes through the lower housing end wall 14 and carries.
  • the housing 19 extends relatively far into the interior 7 of the screen drum 1.
  • the drive shaft 10 passes through the housing 19 and carries in its area a conveyor coil 20.
  • the housing 19 has at its lower end a flange 21, with which the device to a pipe, a container o. The like. Connected. In the area of the flange 21, the drive shaft 10 ends with its conveyor coil 20. In this way, not only the screen drum 1, but also the screw conveyor 18 is driven via the common drive shaft 10 via a single motor 17.
  • the screw conveyor 18 defines a conveying direction 22, with which the sand mixture is conveyed obliquely upward and thus fed to the screening drum 1.
  • the lower end wall 4 of the screen drum 1 is associated with a cutting disc 23, which is supported by the housing 19 of the screw conveyor 18, while the multi-part lower end wall 4 rotates as part of the screen drum 1.
  • the lower end wall 4 and thus the screen drum 1 is supported on rollers 24, which roll either directly on the housing 19 or on a tread. In this way, the lower end of the screen drum 1 on the housing 19 of the screw conveyor 18 stored.
  • the stationary arranged housing 2 surrounds the rotatably mounted screen drum 1 over the circumference completely. It may be an eccentric arrangement to each other, as is apparent from Fig. 1.
  • the housing 2 has in its lower region at the bottom and following the lower housing end wall 14 a discharge pipe 26 which serves to remove the fine fraction formed from the sand mixture according to arrow 27.
  • the housing 2 in connection or in the vicinity of the upper housing end wall 13, a second discharge port 28, which serves to remove the coarse fraction.
  • the fine fraction comprises the constituents of the sand mixture which can pass through the perforations 6 in the sieve wall 5.
  • the coarse fraction is made up of components that are larger than the apertures 6.
  • the screen wall 5 has one or more openings 30 at its upper end.
  • a spray bar 31 is provided in a stationary manner.
  • the spray bar 31 extends substantially over the axial length of the screen drum 1 and the Siebwandung 5.
  • the spray bar 31 is located above the sieve drum 1 and can also extend in a training with multiple spray bars 31 over a certain region of the circumference.
  • Each spray bar 31 has nozzles 32 which are arranged directed to the outside of the screen wall 5.
  • the spray bar 31 is connected to a water supply, which passes through the stationary upper housing end wall 13 of the housing 2.
  • the drive shaft 10 may also extend through the motor 17 and be connected at its upper end to a spray water supply.
  • the drive shaft 10 is hollow on a corresponding axial area (FIG. 6).
  • the device works as follows. With the screw conveyor 18, the usually contaminated sand mixture is also from lower locations, eg. B. from a shaft, a container o. The like., Recorded and conveyed in the conveying direction 22 obliquely upward. At the upper end of the housing 19, the sand mixture is dropped into the interior 7 of the rotating driven drum 1. The sand mixture falls into the respectively located below the area of the screen drum 1 and is taken by the rotation of the screen drum 1 of the Siebwandung 5 over the circumference and transported a certain distance upwards. From there it either falls down again or adheres to the inside 8 of the sieve wall 5.
  • the guide plates 9 fulfill a circulation and conveying function on the sand mixture.
  • the openings 6 in the Siebwandung 5 are formed as holes with a diameter of 10 mm, falling sand components that fall below this limit, through the openings 6 therethrough. They slip on the wall of the housing 2 down and get over the first discharge port 26 as a purified fine fraction out of the device. The coarse fraction can not pass through the openings 6, but is conveyed upwards. It finally passes through the opening 30 in the second discharge pipe 28 and is discharged according to arrow 29.
  • the breaking up of sand lumps and the cleaning of the grains of sand is not only caused by the mechanical rubbing, rolling and falling from the inside 8 of the sieve wall 5, but essentially supported by the spray bar 31.
  • the cleaning effect can be further supported by injecting water from the inside via the hollow drive shaft 10. In many cases, however, this is not necessary.
  • the contaminated sand mixture with entrained water and the splash water passes through the openings 6 also in the discharge pipe 26 and is discharged together with the fine fraction.
  • the fine fraction can be fed to a sand washing plant in which a further purification of the fine fraction takes place.
  • the sand washing plant can improve its effect because the coarse fraction is not introduced into this downstream sand washing plant.
  • Fig. 2 shows a cross section along the line II-II in Fig. 1. From this, the eccentric arrangement between the screen wall 5 and housing 2 can be seen. The arrangement of the spray bar 31 is visible.
  • the housing 2 may be provided with an inspection cover 34.
  • Fig. 3 shows a further embodiment of the device. Compared to Fig. 1 it can be seen that the device is employed with its axis 11 here at a different angle.
  • the angle 12 can be 25 ° here. But it is also easy to imagine that the inclination of the axis 11 can be changed. A horizontally oriented arrangement is possible.
  • the Siebwandung 5 has a first portion 35 and a second portion 36, both of which each extend approximately over half of the axial extent of the Siebwandung 5, the first region 35 has openings 6, which compared to the openings 6 of the area 36 are smaller.
  • the device serves to form from the sand mixture two fine fractions and a coarse fraction.
  • a separate discharge pipe 37 is provided, through which the middle fraction is discharged according to arrow 38. Otherwise, reference is made to the structure and operation of the device according to FIGS. 1 and 2.
  • the discharge pipe 28 for the coarse fraction is not arranged radially to the screen wall 5, but axially. It connects to the upper housing end wall 13.
  • the coarse fraction can pass into the discharge pipe 28, the upper end wall 3 of the screen drum 1 is provided with a first opening 39.
  • the upper housing end wall 13 has a second opening 40.
  • FIG. 5 shows a further embodiment of the device.
  • the sand mixture to be separated z. B. street sweeper
  • the sand mixture is dropped into a container 41 to which the screw conveyor 18 is connected below.
  • the sand mixture is conveyed obliquely upward in the conveying direction 22 until it is dropped into the interior 7 of the screening drum 1.
  • the screen drum 1 with the housing 2 is formed as has already been described on the embodiment of FIGS. 1 and 2.
  • the fine fraction is discharged via the discharge pipe 26, the coarse fraction via the discharge pipe 28.
  • FIG. 6 shows a detailed representation through a region of the drive shaft 10 within the inner space 7.
  • the bores 33 are arranged distributed over the axial length and over the circumference of the drive shaft 10.
  • the drive shaft 10 itself is hollow, so that the supply of water spray through a corresponding rotary connection at the upper end of the motor 17 is possible.

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  • Combined Means For Separation Of Solids (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Disintegrating Or Milling (AREA)

Claims (10)

  1. Dispositif pour traiter un mélange de sable en au moins une fraction fine et une fraction grossière, comportant un tambour de tamisage (1) entraîné par un moteur (17), qui comporte une paroi d'extrémité supérieure (3) et une paroi d'extrémité inférieure (4) ainsi qu'une paroi de tamisage (5) en forme d'enveloppe cylindrique avec des ajours (6) pour le passage de la fraction fine, et qui est disposé avec son axe (11) dirigé en particulier obliquement vers le haut, tandis que la fraction grossière sort à l'extrémité supérieure du tambour de tamisage (1), caractérisé en ce que le tambour de tamisage (1) est traversé par un arbre d'entraînement (10) par lequel la paroi de tamisage (5) du tambour de tamisage (1) est reliée solidairement en rotation dans sa zone supérieure, en ce que l'arbre d'entraînement (10) fait saillie, dans le sens contraire au sens de transport (22) du mélange de sable, à travers le tambour de tamisage, face à celui-ci, et fait partie intégrante d'un dispositif de transport à vis sans fin (18) couplé en amont avec un boîtier (19) disposé fixe et une hélice de transport (20) disposée sur l'arbre d'entraînement (10), en ce que la paroi d'extrémité inférieure (4) du tambour de tamisage est montée tournante sur le boîtier (19) du dispositif de transport à vis sans fin (18), et en ce qu'il est prévu au moins un déflecteur (9) disposé à la manière d'un filet sur la face intérieure (8) de la paroi de tamisage (5).
  2. Dispositif selon la revendication 1, caractérisé en ce que le tambour de tamisage (1) présente un diamètre sensiblement plus grand que le dispositif de transport à vis sans fin (18).
  3. Dispositif selon les revendications 1 et 2, caractérisé en ce que le tambour de tamisage (1) est entouré par un boîtier (2) disposé de manière fixe, qui comporte, dans la zone inférieure, une tubulure d'évacuation (26) pour la fraction fine et, dans la zone supérieure, une tubulure d'évacuation (28) pour la fraction grossière.
  4. Dispositif selon la revendication 3, caractérisé en ce que le boîtier (2) disposé de manière fixe entoure le tambour de tamisage (1) en étant espacé de celui-ci dans une disposition excentrée, et, dans la zone supérieure entre le boîtier (2) et le tambour de tamisage (1), il est prévu une baguette de pulvérisation d'eau (31) pour détacher le mélange de sable de la face intérieure (8) du tambour de tamisage.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le tambour de tamisage (1) présente au moins une sortie, disposée radialement, pour le passage de la fraction grossière.
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que l'arbre d'entraînement (10) est réalisé creux au moins sur une partie de sa longueur, est pourvu de perçages radiaux (33) dans la zone du tambour de tamisage (1) et est raccordé à une arrivée d'eau de pulvérisation.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que sur la face d'extrémité inférieure (4) du tambour de tamisage (1) sont prévus plusieurs rouleaux (24), répartis sur le pourtour, qui roulent sur le boîtier (2) du dispositif de transport à vis sans fin (18).
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé en ce que la paroi d'extrémité supérieure (3) du tambour de tamisage (1) présente une première ouverture (39) et le boîtier (2) disposé de manière fixe présente, dans la zone d'une paroi d'extrémité (13), une deuxième ouverture (40) par laquelle la fraction grossière sort axialement.
  9. Dispositif selon la revendication 1, caractérisé en ce que la paroi de tamisage (5) du tambour de tamisage (1) présente des ajours (6) de forme circulaire d'un diamètre de 10 mm.
  10. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que la paroi d'extrémité inférieure (4) du tambour de tamisage (1) est réalisée largement fermée avec une garniture d'étanchéité en labyrinthe (25).
EP01128216A 2000-12-04 2001-11-28 Dispositif pour obtenir des fractions grosses et fines à partir d' un mélange de sable Expired - Lifetime EP1210987B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10060173 2000-12-04
DE10060173A DE10060173B4 (de) 2000-12-04 2000-12-04 Vorrichtung zum Aufbereiten eines Sandgemisches in eine Fein- und eine Grobfraktion

Publications (3)

Publication Number Publication Date
EP1210987A2 EP1210987A2 (fr) 2002-06-05
EP1210987A3 EP1210987A3 (fr) 2003-10-08
EP1210987B1 true EP1210987B1 (fr) 2006-05-03

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EP (1) EP1210987B1 (fr)
AT (1) ATE324947T1 (fr)
DE (2) DE10060173B4 (fr)

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CN114308617B (zh) * 2022-01-05 2023-09-12 新疆汉块建设工程有限公司 一种高效的建筑工地用筛沙装置及其使用方法
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CN115121481B (zh) * 2022-06-14 2023-12-19 扬州市凯耀机械有限公司 一种多级筛选装置

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DE10060173B4 (de) 2004-12-23
EP1210987A3 (fr) 2003-10-08
DE10060173A1 (de) 2002-06-20
ATE324947T1 (de) 2006-06-15
DE50109686D1 (de) 2006-06-08

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