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EP3488931B1 - Dispositif de séparation des mélanges de matières - Google Patents

Dispositif de séparation des mélanges de matières Download PDF

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Publication number
EP3488931B1
EP3488931B1 EP18000444.2A EP18000444A EP3488931B1 EP 3488931 B1 EP3488931 B1 EP 3488931B1 EP 18000444 A EP18000444 A EP 18000444A EP 3488931 B1 EP3488931 B1 EP 3488931B1
Authority
EP
European Patent Office
Prior art keywords
container
screw conveyor
liquid
buoyant
upper screw
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.)
Active
Application number
EP18000444.2A
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German (de)
English (en)
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EP3488931A1 (fr
Inventor
Johann Doppstadt
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.)
Doppstadt Austria GmbH
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Doppstadt Austria GmbH
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Filing date
Publication date
Application filed by Doppstadt Austria GmbH filed Critical Doppstadt Austria GmbH
Publication of EP3488931A1 publication Critical patent/EP3488931A1/fr
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Publication of EP3488931B1 publication Critical patent/EP3488931B1/fr
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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
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
    • B03B5/36—Devices therefor, other than using centrifugal force
    • 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
    • B03B11/00—Feed or discharge devices integral with washing or wet-separating equipment
    • 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
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
    • B03B5/36—Devices therefor, other than using centrifugal force
    • B03B5/40—Devices therefor, other than using centrifugal force of trough type
    • 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
    • B03B11/00—Feed or discharge devices integral with washing or wet-separating equipment
    • B03B2011/008—Screw dischargers

Definitions

  • the invention relates to a device for separating material mixtures from buoyant and non-buoyant materials, such as stone, sand and wood, from waste mixtures with buoyant and non-floating materials, earth and / or biomass.
  • buoyant and non-buoyant materials such as stone, sand and wood
  • a generic separating device with screw conveyors is, for example, in the DE 323 835 C described.
  • Another separating device for separating material mixtures is described by the U.S. 2,491,912 A .
  • the known devices have the disadvantage that they do not separate the material mixtures properly from one another. As a result, it is necessary to send the mixture several times through a separating device in order to obtain a satisfactory result.
  • Another disadvantage is that the known devices cannot regularly be relocated, so that relocation to another place of use is often not possible, which results in long transport routes for the delivery of the material mixtures. If the operator decides to implement the device anyway, this is associated with high assembly and transport costs. Furthermore, there is a high level of wear and tear on the devices, caused for example by stones or sand.
  • the object of the invention is therefore to propose a device for separating material mixtures which no longer has at least one of the disadvantages described above.
  • the object of the invention is achieved by a device for separating material mixtures from buoyant and non-buoyant materials, such as stones, sand, wood, waste mixtures or biomasses, consisting of a container which is provided in a frame and can be filled with liquid, with a funnel-shaped filling opening and a bottom sloping on one side, with at least two rotatably mounted screw conveyors and driven by at least one drive being arranged one above the other in the operating position, the screw conveyors rising towards the outlet side of the container or being provided essentially parallel to the bottom of the container so that they protrude at least partially from the liquid during use of the device, which is characterized in that at least one swirling device is provided between the upper screw conveyor and the lower screw conveyor.
  • the swirling device ensures that buoyant constituents of the material mixture are transported or carried to the surface of the container filled with liquid. There they are picked up and transported out by the upper screw conveyor, which is intended to increase in relation to the installation area. At the end of the screw conveyor, the buoyant components, such as wood or other buoyant materials, are conveyed onto a conveyor belt by the screw conveyor.
  • the non-buoyant components are picked up by the lower screw conveyor and also transported out of the container. At the end of the container, these materials are also conveyed onto a conveyor belt which, of course, is provided separately from the conveyor belt with buoyant components.
  • the swirling device can be designed as a nozzle through which, for example, water is introduced into the container at high pressure or overpressure in order to swirl the material mixture.
  • This mechanical swirling device can be designed, for example, in the manner of a whisk. Another possibility is the design of the swirl device in the manner of a turbine wheel.
  • a solution is also provided in which a mechanical device in the form of a rotatable shaft provided with vanes is provided as the swirl device. Even very good results can be achieved with this type of design of the swirling device.
  • the invention therefore comprises several variants.
  • the disadvantages of the prior art are completely eliminated by the design according to the invention.
  • the swirling of the liquid also reduces wear in the device. This results in longer periods of use of the device according to the invention compared to the devices of the prior art.
  • a first variant of the device according to the invention is characterized in that at least one nozzle is provided as the swirling device, through which liquid is pressed into the container with excess pressure in order to whirl up the liquid in the container and guide the buoyant components of the material mixture upwards to the upper screw conveyor .
  • This variant has already been briefly outlined above. It is advantageous if more than one nozzle is provided in the container, whereby the swirling effect is further increased.
  • At least one mechanical device in the form of a rotatable, winged shaft, a whisk or a swirling screw is provided as the swirling device.
  • a mechanical device in the form of a rotatable, winged shaft, a whisk or a swirling screw is provided as the swirling device.
  • these variants it is also possible with these variants to arrange several such swirling devices in the container.
  • an additional trough with a sieve bottom is arranged below the upper screw conveyor in the container or that the sieve bottom surrounds the upper screw conveyor at least on one side in the lower area, preferably in a grid shape.
  • the additional trough also includes the upper screw conveyor approximately up to Half the diameter.
  • the sieve bottom is arranged in the lower area of the additional trough and preferably protrudes at least partially from the upper liquid level in the container.
  • the upper screw conveyor conveniently conveys the liquid to the sieve bottom, creating a circuit through which the floatable or light components reach the surface and can be transported away by the upper screw conveyor.
  • This design creates a circuit in the upper tub with buoyancy and water purification, whereby the light, buoyant components also reach the surface of the liquid.
  • the heavier components reach the bottom of the additional tub as far as a heavy material opening provided there and from there into the area of the lower screw conveyor, which grabs these heavy components and transports them out of the device.
  • the invention also works with a solution in which the sieve bottom surrounds the circumference of the upper screw conveyor in the installed position below in a grid-like manner.
  • the sieve bottom is arranged above the lower screw.
  • This type of design already creates a suction through which the buoyant components above, i. H. remain in the detection area of the upper screw conveyor and can be transported away by this.
  • the non-buoyant components arrive at the sieve bottom in the lower area, viewed in the conveying direction, or at the lower end of the upper screw conveyor. There they are lowered through a particularly adjustable heavy material opening in the area of the lower screw conveyor, whereby they can be grasped by the latter and transported out.
  • the nozzle is provided in an angle-adjustable manner in order to direct the flow of liquid.
  • the angle adjustment can take place, for example, via a linkage that can be controlled from the outside.
  • This angular adjustment can be designed both manually and motor-driven.
  • the angle adjustment of the liquid flow can also be done with appropriately arranged deflector plates.
  • At least one adjusting device is provided for adjusting the flow of liquid.
  • This can be an adjusting device for adjusting the angle of the nozzle.
  • it is also possible to change the position of the swirling device in the container in order to obtain an adjustment of the liquid flow.
  • the embodiment of the invention described in the second place is characterized in a variant of this embodiment in that a tub as an additional tub in the container surrounds the circumference of the upper screw conveyor in the installed position below, approximately up to half the diameter and the sieve bottom is arranged at the bottom of this additional tub is. It is advantageous if the sieve bottom preferably protrudes at least partially from the liquid or the upper liquid level. This creates the effect already described that the upper screw conveyor conveys the liquid to the sieve bottom, which creates a buoyancy in the liquid. As a result, the light, buoyant components reach the detection area of the upper screw conveyor, are picked up by it and transported out. As already mentioned, the heavier components then reach the bottom of the additional tub. There they are guided down through a heavy material opening in the container into the area of the lower screw conveyor, where they are picked up and transported away.
  • the variant of the invention described in the second place is also characterized in that a sieve bottom is provided between the lower and the upper screw conveyor. It is advantageous if the sieve bottom surrounds the circumference of the upper screw conveyor in the installed position at least on one side in the lower area in a grid-like manner. The sieve bottom is thus located between the lower and the upper screw conveyor.
  • the sieve bottom alone takes care of it already in cooperation with at least one of the screw conveyors for a suction effect, whereby the buoyant components are conveyed upwards. As a result, they can then be transported out of the liquid mixture by the upper screw conveyor.
  • the heavier components, such as stones remain at the bottom and slide down there due to the inclined arrangement of the sieve bottom.
  • the upper screw conveyor has a larger diameter than the lower screw conveyor. This also increases the suction effect for the lighter or swimming goods components of the mixture, which significantly improves the removal. It is also advantageous if the distance between the screw helix and the upper conveyor screw is significantly greater than the distance between the lower screw helix and the lower conveyor screw.
  • At least one opening is provided at the lower end of the sieve bottom. It is particularly advantageous if this opening is designed as an adjustable heavy material opening. Thus, one can react to different grain sizes of the heavy material to be removed. The non-buoyant material then passes through the heavy material opening into the area of the lower screw conveyor and is transported out of the device by this.
  • a clever variant of the solution according to the invention proposes that a height adjustment be provided between the frame and the container of the device in order to change the position of the container in the frame. It is thus possible to react to different separating mixtures in that the container can be positioned at a larger angle with respect to the installation area or at a smaller angle with respect to the installation area. It has been found that this can significantly improve the separating effect.
  • By adjusting the angular position of the container and thus of course also the two screw conveyors it is possible to react to different material mixtures. In this way, the height of the liquid level in the container can also be influenced.
  • the space in which the material mixture is introduced becomes narrower or, in terms of volume, smaller. It is therefore clear that this can also have a favorable effect on the separating effect.
  • a level controller for regulating the water level and / or water supply is provided on the device according to the invention. This also allows the separation effect to be influenced, i. H. to enhance.
  • the device according to the invention is characterized in that an angular adjustment of the container including the screw conveyor is provided, and a water level and fill level change can be carried out.
  • At least two transport devices for removing the separated materials are arranged on the output side of the container in such a way that the material passes from the screw conveyors to the respectively assigned transport device. This enables the buoyant and non-buoyant material components to be transported away separately.
  • the device according to the invention is characterized in that it can be implemented.
  • it has wheels or rollers, for example, at least on one side, which are in a corresponding guide on the frame are arranged.
  • a suspension device is then arranged, for example, by means of which the device can be moved from a motor-driven vehicle by means of a correspondingly designed pulling or hitching device.
  • FIG. 1 an embodiment of the device according to the invention is shown as a 3-dimensional representation.
  • the device is indicated schematically with an arrow and the reference symbol I.
  • the entire device is arranged on a frame 1/2.
  • a container 1 which can be filled with liquid is arranged in the frame 1/2.
  • This container 1 has a sloping bottom 1/1 seen from left to right.
  • two screw conveyors 2, 3 are arranged in the container 1, likewise rising (viewed from right to left).
  • the lower screw conveyor 3 is provided for conveying out non-floatable materials, while the upper screw conveyor 2 grasps the floatable components and also conveys them out.
  • the extracted components are each placed on a conveyor belt.
  • the non-buoyant components are transported onto the lower conveyor belt as a transport device 5, while the buoyant components are transported from the screw conveyor 2 onto the upper conveyor belt as a transport device 6.
  • the arrow with the reference symbol C denotes the direction of delivery.
  • the filling opening for the material mixture is marked with the reference symbol A, while the reference symbol B schematically indicates the exit of the material from the screw conveyor.
  • the conveyor belts as transport devices 5, 6 are also attached to the frame 1/2. The angle of incidence of the conveyor belts can be changed by means of adjusting devices which are not designated in any more detail. Below the lower transport device 5, two rollers 7/1 are provided in a guide 7. These are components for moving the entire device I.
  • FIG Fig. 1 shows a view of the device according to the invention according to FIG Fig. 1 from the rear.
  • the container 1 with its sloping bottom 1/1 is also clearly visible here.
  • Boundary surfaces of the filling opening A are denoted by the reference symbol 1/3.
  • the screw conveyors again bear the reference numerals 3 and 2.
  • the swirling device 4 can be seen very nicely.
  • a nozzle 4/2 is arranged in each case on the left and right below the upper screw conveyor 2.
  • the nozzles 4/2 are angle-adjustable by means of a rod as an adjusting device 4/3.
  • the Figure 3 shows a 3-dimensional representation of a section of the device according to the invention according to FIG Fig. 1 for a better illustration of an embodiment of the swirling device 4.
  • the swirling device 4 has the following components, namely a pump 4/1, the nozzle 4/2 and the adjusting device 4/3 for the nozzle 4/2, which cannot be seen here.
  • the nozzle 4/2 has three outlet openings for the liquid to exit.
  • the overpressure generated by the pump 4/1 whirls up the liquid in the container, as a result of which the buoyant components of the material mixture are guided upwards to the upper screw conveyor 2.
  • a suspension or carrying device 9 is provided between the supports 1/4, which are components of the frame 1/2.
  • a hook of a truck-mounted crane or another transport device can be hung there, for example, in order to lift and move the entire device for separating material mixtures I.
  • the reference numeral 8 denotes stiffening plates to which supplementary elements (not shown here) can be arranged or fastened.
  • Figure 4 shows a view similar to Figure 3 but from a different point of view.
  • the inventive device according to the Figs. 1 to 4 is filled with liquid, for example water, for the separation process of the material mixture.
  • the material mixture is poured into the hopper A using a hoist or other suitable devices.
  • the two screw conveyors 2 and 3 are set in rotation for this purpose.
  • the material mixture is already set in motion by the screw conveyors 2 and 3.
  • the swirling device 4 then ensures that the buoyant constituents of the material mixture are guided to the upper screw conveyor 2.
  • the upper screw conveyor 2 then conveys the upward swirled or guided, buoyant material to the upper conveyor belt as a transport device 6.
  • the lower screw conveyor 3 conveys the non-buoyant, heavier material to the lower conveyor belt as a transport device 5.
  • the swirling device is equipped with a pump 4 / 1 equipped, which can be designed as a circulation pump so that new water does not have to be constantly added. Of course, fresh water must also be refilled accordingly if the liquid level in the container 1 falls below a certain level.
  • This configuration according to the invention makes it possible to obtain a very good separation result.
  • the distribution of the liquid in the container 1 reduces wear on the screw conveyors 2, 3 and on the container walls.
  • the upper screw conveyor 2 is at least partially or in sections surrounded in the lower area by an additional trough 43 with a sieve bottom 41 arranged in the container 1.
  • the sieve bottom 41 is shown here schematically as a black area.
  • the sieve bottom 41 is designed in the form of a grid, whereby liquid can run downwards while the light, buoyant components of the material mixture remain above the sieve bottom 41 and can be transported away by the upper screw conveyor 2.
  • the upper screw conveyor 2 transports the liquid mixture to the sieve bottom 41.
  • the upper screw conveyor 2 is significantly larger, i. H. provided with a larger diameter.
  • the screw helixes 2/1 are arranged at a greater distance c from one another than the screw helix 3/1 of the lower conveyor screw 3.
  • the distance between the lower screw helix 3/1 is marked with d.
  • the sieve bottom 41 is provided as a swirling device 4 and ensures that a suction effect is created, which also leads to the light or floatable components of the material mixture reaching the area of the upper screw conveyor 3 and being transported away by it.
  • the solution according to the invention also works without an additional tub.
  • only one sieve bottom 41 can be provided between the upper screw conveyor 2 and the lower screw conveyor 3, which is at least partially closed is.
  • the container 1 it is also possible to provide the container 1 with a partition plate which also has an opening for receiving the sieve bottom 41. This is not shown in the drawing.
  • a height adjustment device 8 is provided.
  • This height adjustment device 8 can be designed purely mechanically, for example as a rack, or else as a hydraulic adjustment device.
  • the height of the container 1 can therefore be changed via the axis 8/1. It is thus clear that the area in which the two screw conveyors 2, 3 are located in the liquid becomes significantly smaller or narrower the higher the container 1 is raised.
  • the maximum liquid level is identified by a line that is touched by an arrow with the reference number 10. All other features have already been described in the previous figures, so that they will not be presented again.

Landscapes

  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Screw Conveyors (AREA)

Claims (14)

  1. Un dispositif pour séparer des mélanges de matériaux composés des matériaux flottants et non flottants, tel que des débris de pierre, de bois, de mélanges de déchets, de terres et/ou de biomasses, comprenant un récipient (1) étant prévu dans un bâti (1/2) et pouvant être rempli par un liquide, avec un orifice de remplissage (A) réalisé en forme d'entonnoir et un fond (1/1) en pente descendante d'un côté, dans lequel au moins deux vis transporteuses (2, 3) montées rotatives et entraînées par au moins un entraînement (11) sont superposées dans le récipient (1) en position de fonctionnement, dans lequel les vis transporteuses (2, 3) sont prévues ascendantes vers le côté de sortie (B) du récipient (1) ou sensiblement parallèles au fond (1/1) du récipient (1), de sorte qu'elles dépassent du liquide au moins en partie pendant l'utilisation du dispositif, dans lequel au moins un dispositif de tourbillonnement (4) est prévu entre la vis transporteuse supérieure (2) et la vis transporteuse inférieure (3), caractérisé en ce que au moins une buse (4/2) est prévue comme dispositif de tourbillonnement (4), à travers laquelle le liquide est forcé dans le récipient (1) avec une surpression afin de faire tourbillonner le liquide dans le récipient (1) et de guider les constituants flottants du mélange de matériaux vers le haut vers la vis transporteuse supérieure (2).
  2. Un dispositif pour séparer des mélanges de matériaux composés des matériaux flottants et non flottants, tel que des débris de pierre, de bois, de mélanges de déchets, de terres et/ou de biomasses, comprenant un récipient (1) étant prévu dans un bâti (1/2) et pouvant être rempli par un liquide avec un orifice de remplissage (A) réalisé en forme d'entonnoir et un fond (1/1) en pente descendante d'un côté, dans lequel au moins deux vis transporteuses (2, 3) montées rotatives et entraînées par au moins un entraînement (11) sont superposées dans le récipient (1) en position de fonctionnement, dans lequel les vis transporteuses (2, 3) sont prévues ascendantes vers le côté de sortie (B) du récipient (1) ou sensiblement parallèles au fond (1/1) du récipient (1), de sorte qu'elles dépassent du liquide au moins en partie pendant l'utilisation du dispositif, dans lequel au moins un dispositif de tourbillonnement (4) est prévu entre la vis transporteuse supérieure (2) et la vis transporteuse inférieure (3), caractérisé en ce qu'un dispositif mécanique sous forme d'un arbre rotatif avec des ailes, d'un tourbillon ou d'une vis sans fin de tourbillonnement est prévu comme dispositif de tourbillonnement (4).
  3. Le dispositif selon la revendication 1, caractérisé en ce que la buse (4/2) est prévue réglable angulairement pour diriger le courant liquide.
  4. Le dispositif selon l'une des revendications 1 et 3, caractérisé en ce que au moins un dispositif de réglage (4/3) est prévu pour régler le courant liquide.
  5. Le dispositif selon la revendication 2, caractérisé en ce qu'un bac (43) entoure le périmètre de la vis transporteuse supérieure (2) en position de montage en dessous, approximativement jusqu'à la moitié du diamètre, et le fond perforé (41) est monté au fond du bac (43), le fond perforé (41) dépassant du liquide ou du niveau supérieur du liquide (10) de préférence au moins en partie.
  6. Le dispositif selon l'une des revendications 2 et 5, caractérisé en ce que le fond perforé (41) entoure le périmètre de la vis transporteuse supérieure (2) en position de montage en dessous en forme de grille et/ou le fond perforé (41) entoure la vis transporteuse supérieure (2) en position de montage en dessous seulement par endroits.
  7. Le dispositif selon l'une des revendications précédentes, caractérisé en ce que le diamètre de la vis transporteuse supérieure (2) est supérieur à celui de la vis transporteuse inférieure (1).
  8. Le dispositif selon l'une des revendications précédentes, caractérisé en ce que la distance (c) entre les hélices de la vis transporteuse supérieure (2) est supérieure à la distance (d) entre les hélices de la vis transporteuse inférieure (3).
  9. Le dispositif selon l'une des revendications précédentes, caractérisé en ce que la vitesse de rotation de l'entraînement (11) et donc la vitesse de rotation de la vis transporteuse supérieure (2) et/ou de la vis transporteuse inférieure (3) est variable.
  10. Le dispositif selon l'une des revendications 2, 3 et 5 à 8, caractérisé en ce que, en position de montage, un orifice de matière alourdissante (42) notamment ajustable est prévu à l'extrémité inférieure du bac (43) et/ou du fond perforé (41).
  11. Le dispositif selon l'une des revendications précédentes, caractérisé en ce qu'un réglage en hauteur (8) est prévu entre le bâti (1/2) et le récipient (1) pour changer la position du récipient (1).
  12. Le dispositif selon l'une des revendications précédentes, caractérisé en ce qu'un régulateur de remplissage (12) est prévu pour réguler le niveau d'eau et/ou l'amenée d'eau.
  13. Le dispositif selon l'une des revendications précédentes, caractérisé en ce que au moins deux dispositifs de transport (5, 6) sont disposés sur le côté de sortie (B) du récipient (1) pour évacuer les matériaux séparés de sorte que le matériau est conduit des vis transporteuses (2, 3) vers le dispositif de transport (5, 6) respectivement associé.
  14. Le dispositif selon l'une des revendications précédentes, caractérisé en ce que le dispositif est conçu pour être amovible.
EP18000444.2A 2017-11-22 2018-05-11 Dispositif de séparation des mélanges de matières Active EP3488931B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202017006034.5U DE202017006034U1 (de) 2017-11-22 2017-11-22 Vorrichtung zum Trennen von Materialgemischen

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EP3488931A1 EP3488931A1 (fr) 2019-05-29
EP3488931B1 true EP3488931B1 (fr) 2021-09-08

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CN111441463B (zh) * 2020-04-05 2020-12-11 福建爱迪生科技有限公司 一种下水道污水分层处理装置的工作方法
EP3943194B1 (fr) * 2020-07-22 2025-01-15 Moerschen Mobile Aufbereitung GmbH Séparateur de matières légères destiné au fractionnement d'un mélange de matières
CN111940404B (zh) * 2020-08-07 2022-04-12 龙王致新(北京)科技有限公司 一种生产大豆油的大豆清洗筛选设备及其使用方法

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