WO2018172346A1

WO2018172346A1 - Separator with lifting beam conveying

Info

Publication number: WO2018172346A1
Application number: PCT/EP2018/057003
Authority: WO
Inventors: Martin HERTWIG; Hugo Vogelsang; Paul Krampe
Original assignee: Hugo Vogelsang Maschinenbau Gmbh
Priority date: 2017-03-20
Filing date: 2018-03-20
Publication date: 2018-09-27
Also published as: DE112018001451A5; DE202017101623U1

Abstract

The present invention relates to a separator apparatus (1) for separating solids from liquids (2), which apparatus comprises a conveying device (4) for conveying a solid-containing liquid (2), a drive (6) for driving the conveying device (4) and at least one first receiving chamber (8a, 8b, 8c) which is arranged below the conveying device (4) and is provided for the purpose of receiving downward-flowing liquid (2a), wherein the conveying device (4) has at least one first sieve unit (40) that is provided in order to form, in operation, a filter cake (2b) on a first sieve face (44) of the first sieve unit (40), and a first support unit (42) corresponding to the first sieve unit (40), wherein the first sieve unit (40) can be moved by means of the drive (6) on a first movement path (B) such that the filter cake (2b) can be moved by means of the first sieve unit (40) along a first section (B1) of the first movement path (B) in a conveying direction (F), and can be supported along a second section (B2) of the first movement path (B) by means of the first support unit (42).

Description

Separator with lifting beam conveying

The invention relates to a Separatorvorrichtung for separating solids from liquids, comprising a conveyor for conveying a solids-containing liquid, a drive for driving the conveyor and at least a first receiving chamber, which is arranged below the conveyor and is provided for ne, down-flowing liquid take.

The invention further relates to a Separatorsystem and a method for separating solids from solids-laden liquids with a Separatorvorrichtung of the type mentioned.

Separator devices of this type are also called filter devices or filtration devices. They serve to separate solids laden liquids into solids and liquid. In principle, such Separatorvorrichtungen find their application in numerous applications. A typical application is in the treatment of solids-laden liquids in agricultural production, for example in the treatment of manure, in the treatment of substrates for biogas plants, and digestate from biogas plants and the like.

Such Separatorvorrichtungen are preferably operated continuously, that is, a solids-containing liquid is fed to the Separatorvorrichtung, through the sepa- ratorvorrichtung divided into solid on the one hand and liquid on the other hand, and the solid and the liquid are discharged. Separator devices can also be operated in a quasi-continuous mode of operation. In such an operation, the solids-containing liquid is filled into a container and then discharged by the separator either erator the liquid or the solid from this container, so that the solids or the liquid remains in the container. After a target specification in the form of a solid density or - viscosity or in the form of falling below a solids content in the liquid was achieved in this quasi-continuous operation, the solid or the liquid is withdrawn from the container, and the cycle can be refilled by refilling the container Restart fluid containing solids. The invention is essentially directed to continuously operated Separatorvorrichtungen, but is also applicable for the quasi-continuous operation.

A general problem that occurs especially in continuous operation, but also in quasi-continuous operation, has its cause that for the purpose of separation of solid and liquid, the separation by means of filtration surfaces, which pass the liquid and retain the solids, in many Have proven and enforced applications technically compared to other separation principles. However, a disadvantage of this separation principle by means of filtration surfaces is that these filtration surfaces become clogged by the solids and, as a result, the permeability of the filtration surface during operation is continuously reduced. As a result of this clogging of the separating surface, that is to say clogging of a membrane, filter surface or sieve surface or the like, the permeability of the filtration surface for the liquid is reduced so much after a certain period of time that an efficient operation of the separator device is no longer possible. This then necessitates the replacement of the filtration surface or requires cleaning the filtration surface of the solid particles deposited therein or deposited thereon.

One approach to solve this problem is to use as a filtration area so-called band filter, which are designed as endless belt and can be moved from a functional position in which they carry out a filtration task, in a position in which a cleaning, for example by Backwashing or the like is achieved. Such belt filtration systems are structurally complex, and the bandpass filters used therein are sensitive and expensive. Such a filter device is known for example from DE 34 04 1 10 A1. There is a vacuum filter for the separation of solids from liquids with a circulating at a distance from each other arranged wheels revolving conveyor described on the way to form a horizontal filter surface an endless row of trays is movably mounted, which are guided over a stationary vacuum channel. So that the filter cloth can be cleaned during operation and easy maintenance and repair are possible, it is provided that on the troughs on the filtration zone an endless filter cloth is placed and washing facilities are provided for this purpose outside the filtration zone, each trough in the direction of forward and has a rear and is borderless formed so that the row of adjacent troughs forms a common filter surface on the filtration zone, all troughs are connected to an elastic endless belt connected through holes for the outflow of the filtrate in the vacuum channel and on this are guided in a smooth manner.

To counteract this problem, the present applicant has already proposed in DE 20 2015 101 414 to provide a separator device comprising a conveying device for conveying a solids-containing liquid, a first vacuum chamber, a first filtration surface delimiting the first vacuum chamber for separating the solids and the Fluid, wherein the conveying device has a plurality of mutually mechanically connected chamber elements, each chamber element has a chamber interior, which has a chamber inlet opening for the solids-containing liquid and a first chamber outlet opening, wherein the chamber elements are movably guided such that each chamber element by means of the conveyor a first position in which the chamber element is immersed in the solids-containing liquid, is guided into a second position, and wherein the movement of each chamber element between the first and the second pos tion is performed such that the first chamber outlet opening rests against the first filtration surface. One realization of this solution is, for example, to attach box-shaped elements to a conveyor belt, which are then preferably moved upwards in an inclination to the horizontal, along an obliquely oriented filter surface, where they dip at the lower end in the liquid and this on the filtration surface "upward In this case, the liquid can pass through the filtration surface and a filter cake remains in the individual chambers, which is then transported by means of the conveyor belt.

While there is a problem of open design in the described bandpass filters, this problem basically exists with chambered separators not, but it is still desirable to provide a simpler process, which in particular works more wear-free. Due to the friction of the individual chambers on the filtration surface, there is wear and this is especially high in solids laden liquids. The problem of high friction and thus of wear in press screw separators is particularly evident.

It is therefore an object of the present invention to provide a separator device for separating solids from liquids, which is improved in terms of wear, can work continuously, and avoids the problem of blockage of the filter openings. This object is achieved by a Separatorvorrichtung of the type mentioned in that the conveyor has at least a first screening unit, which is intended to form a filter cake on a first screen surface during operation, and having a first screen unit corresponding first support unit, wherein the first screening unit is movable by means of the drive on a first movement path, such that the filter cake is movable in a conveying direction by means of the first screening unit along a first section of the first movement path, and can be supported along a second section of the first movement path by means of the first support unit. The first screening unit is preferably movable continuously along the first movement path. The invention makes use of the knowledge that clogging or clogging of filters or sieves takes place, in particular, by means of a filter cake which builds up continuously. Furthermore, the invention makes use of the knowledge that wear is caused, in particular by friction of elements, between which solid-laden liquid is present, while these parts are moved relative to each other. According to the invention, it is provided that the screening unit is moved, and not another element which, for example, pushes along the screening unit in order to scrape off the filter cake, push it away or otherwise keep the screening unit free of the filter cake. The sieve unit according to the invention even transports the filter cake along the path of movement, namely along the first section of the trajectory. In the second section of the path of movement of the filter cake is supported by the support unit and therefore not moved further. Preferably, the first portion of the trajectory is substantially aligned in the transport direction, while the second portion of the trajectory is preferably aligned opposite to the transport direction. That is, on one way, the sieve unit takes the Filterku- As she puts it on the way back on the support unit, and so can move back freely from the filter cake. As a result, there is a continuous transport of the filter cake. Clogging or clogging of the screen unit is avoided. At the same time no element is provided which scrapes or pushes along the screen unit, so that the wear is reduced.

According to a first preferred embodiment, the first sieve unit has a plurality of first sieve openings and the first support unit has a corresponding plurality of first support elements which can at least partially engage in the first sieve openings so that the first sieve openings are released in the first section of the first movement path, and in the second portion of the first trajectory, the first support members of the first support unit extend at least partially into the first screen openings to support the filter cake. The first support elements may be formed, for example, as projections, pins or the like. In the first section, the screening unit is preferably separate from the support element, for example a raised position. In the second section of the movement path, the screening unit is then, for example, at a lowered position, so that the support elements of the support unit extend at least partially in, but preferably through the screen openings. In this way, on the one hand, the screen openings are freed of solids settling therein, on the other hand, a simple possibility is provided for supporting the filter cake while the screen unit is in the second section of the movement path. The screen openings may in this case have any shape, in particular circular, oval, oblong, slot-shaped or the like. It can also be provided that the support unit is also at least partially movable, but such that the filter cake is supported as described. For example, the support unit is movable in the conveying direction, while the filter unit is in the second section of the movement path.

Furthermore, it is preferred that the first trajectory is a circular path. A circular path is a particularly simple path, and in particular the control of the drive is thereby simplified. The central axis of the circular path is preferably substantially aligned parallel to the screen surface of the first screen unit. This makes it possible to move the screen surface at least in sections, namely along the first section of the movement path, essentially in the direction of the conveying direction. In a particularly preferred embodiment, the conveyor is designed as Hubbalkenförderer. According to a preferred embodiment, the conveyor has a second screen unit with a corresponding second support unit, wherein the second screen unit is movable on a second movement path. Alternatively, the first support unit is designed as a second screen unit. The second screening unit is preferably arranged in the conveying direction next to the first screening unit. This allows you to edit a wider area and thus produce a wider filter cake. The throughput is increased.

In an alternative, the second screening unit is arranged in the conveying direction downstream of the first screening unit. As a result, the total filter length can be increased, whereby the filter cake more liquid can be withdrawn, and thus the filtering is more effective overall.

Particularly preferably, the second movement path is a circular path, and the first and second screening unit are movable in phase along the respective circular path. If the first and second screening units are arranged next to one another in the conveying direction, it is preferred that the first and second circular paths are identical. In a successively arranged alignment of the first and second screen unit is preferred that the circular paths coincide in their geometry, but are offset axially parallel, in the conveying direction. On the one hand, a continuous displacement can be achieved by a phase shift, in that the conveying cake is conveyed by means of the first screening unit, while the second supporting unit engages and vice versa. Particularly preferred is the phase shift in about 180 °. A particular advantage here is that when the first screening unit is moved upwards, the second screening unit moves downwards. This makes it possible to use the gravity of the first screening unit to move the second screening unit at least partially upwards. As a result, the energy efficiency is increased because less energy is needed to move the first and second screening units along the respective circular path.

In a preferred embodiment, the first screening unit has a plurality of spaced and parallel bars defining a plurality of slot-shaped screen openings. The individual beams are preferably formed substantially identical and each arranged at the same distance from each other. The spacing of the bars defines the screen openings, which are then slit-shaped in this embodiment. Preferably, the second screening unit also has a plurality of spaced apart and spaced beams, which have a Define a plurality of slit-shaped screen openings. Preferably, the first and second screening unit are formed substantially identical.

In this embodiment, preferably also the support elements of the support unit, preferably the first support elements of the first support unit and the second support elements of the second support unit formed as a beam, wherein the width of the bars of the support unit is slightly smaller than the wire width of the screen openings. As a result, the first and second screen units can be moved substantially contactlessly relative to the first and second support units. Preferably, a distance between the respective beams of the screen unit and the respective beams of the support unit, which are preferably always arranged alternately, in a range of 0, 1 mm to 1 mm, preferably in about 0.5 mm.

In a preferred embodiment, the bars of the sieve unit are designed so that they taper downwards. In particular, the beams are triangular or trapezoidal in cross-section, or in an alternative substantially T-shaped. If the sieve unit moves along the movement path, it is moved not only in the conveying direction, but also in such a way that the filter cake is movable in a conveying direction along a first section of the first trajectory by means of the first sieve unit and along the second section of the first trajectory the first support unit can be supported. In the implementation with the bars, this means that the sieve unit is also moved perpendicular to the sieve surface. By making the beams of the screen unit taper downwardly, the gap between the beams of the screen unit and the corresponding support members of the support unit is increased when the screen unit is moved upwards, that is, along the first trajectory. In this case, more liquid can pass through the gap between the bars of the screen unit and the support elements of the support unit. In a preferred development, the supporting elements of the support unit designed as beams are also tapered downwards. In this case, the gap between the beams of the screen unit and the beams of the support unit is increased even when the screen unit is in the second portion of the movement path. In a preferred embodiment, the first support unit forms a first support surface which encloses an angle α with the first screen surface in a range of 0 ° to 10 °, preferably 1 ° to 5 °, preferably about 2 ° to 4 °. At an angle of 0 °, the first support surface and the first screen surface are parallel to each other and the filter cake is transported evenly. However, if the first support surface and the first surface of the The angle α is> 0 ° (but less than 90 °), the filter cake is gradually transferred from the first screen surface to the first support surface, since the first screen unit when moving along the trajectory gradually into the first Submerged support unit. As a result, the filter cake can be stretched, making it again liquid-permeable, after he had previously become impermeable by the already carried out filtration and thus compaction.

According to a further preferred embodiment, the drive has a first drive shaft which has a first eccentric section with a first eccentricity, wherein the first screen unit is mounted with a first drive section on the first eccentricity. Now, if the drive shaft rotates about its axis of rotation, the eccentricity also rotates about this axis of rotation. The eccentricity describes a circular path about the axis of rotation. Due to the fact that the first screening unit is mounted on the first eccentricity, the screening unit describes a corresponding circular path. As bearing between the first drive section of the first screening unit and the first eccentricity of the first drive shaft, a slide bearing can be provided. Alternatively, it is also possible to provide a roller or needle roller bearing, which is structurally complex. Since the rotational speeds are not particularly high, it is advisable to provide a sliding bearing. For this purpose, it is conceivable to provide a sliding bush made of a plastic material in order to minimize wear on metal elements. Furthermore, it is preferred that the first drive shaft has a second eccentric section with a second eccentricity, wherein the second screen unit is mounted with a first drive section on the second eccentricity. In this embodiment, the second screening unit is preferably arranged in the conveying direction adjacent to the first screening unit. The second eccentricity of the first drive shaft may be formed identically to the first eccentricity, but preferably the second eccentricity of the first drive shaft is 180 ° out of phase with the first eccentricity. As a result, the above-described phase-shifted movement of the first and second screen unit is achieved on their respective orbits. Due to the phase shift of the eccentricities on the first drive shaft, the forces on the first drive shaft are relatively low, since they compensate each other.

The drive expediently has a second drive shaft which has a first eccentric section with a first eccentricity, wherein the first screen unit is mounted with a second drive section on the first eccentricity. In a corresponding manner, the second drive shaft preferably has a second eccentric cut with a second eccentricity, wherein the second screening unit is mounted with a second drive portion on the second eccentricity. The second drive shaft is preferably identical to the first drive shaft. The second drive shaft is preferably offset parallel to the first drive shaft, so that the screen unit can be moved along the circular path, without doing a rotation about its own axis. This ensures that the screen surface is always oriented upwards, preferably substantially horizontally, and does not tilt during operation.

As an alternative to the first and second drive shafts, it is also conceivable to guide the first and / or second screening unit by means of a sliding guide. This makes it possible to achieve a larger spectrum of trajectories, but the construction is also more complicated than by means of the drive shafts described.

Furthermore, it is conceivable and preferred to use only one drive shaft in conjunction with a lever drive. In this case, the first screening unit is preferably coupled to the lever drive with a second drive section. The lever drive preferably has a first drive rod, a second drive rod and a pivotally mounted on a fixed bearing connection lever. The first drive rod may, for example, be coupled to the first eccentricity of the first drive shaft. The second drive rod is then preferably connected in accordance with the second drive section articulated. The connecting lever articulates the first and second drive rods together so that the movement of the first eccentricity can be transmitted to the second drive portion via the lever drive. An advantage of this solution is that one of the two waves provided with eccentricities and thus a synchronization of the two waves can be omitted. The fixed bearing may for example be the frame of the separator. It should be understood that in addition to the first and second screening unit also further third, fourth, etc. screening units may be provided. If these are likewise arranged in the conveying direction adjacent to the first and / or second screening unit, it is preferred that these are likewise driven via the drive shafts by means of further eccentricities. Thus, it is conceivable that a third screening unit is again arranged in phase with the first screening unit, and any fourth screening unit in phase with the second screening unit. It is also conceivable that three screening units are provided, the second screening unit having a larger, in particular double, width, based on the first and third screening unit. This will also result in a phase Displacement of the second screen unit with respect to the first and third screen unit achieves an energy reduction.

According to a further preferred embodiment, the at least one first receiving chamber has a liquid outlet with an outlet line, wherein the outlet line opens into a pump inlet of a pump. In addition to the first receiving chamber, further second, third and fourth receiving chambers may be provided. It is preferred that each receiving chamber has a liquid outlet with an outlet conduit, said outlet conduit opening into a respective pump inlet of a respective pump. The receiving chambers are preferably separated in the conveying direction. The liquid flowing downwards through the sieve unit becomes purer in the conveying direction, that is to say in the conveying direction the liquid flowing downwards has in each case a smaller proportion of solids. The reason for this is that at the beginning no filter cake has formed on the sieve surface. The filter cake is gradually built up in the conveying direction and leads to a further filtering of the liquid. By dividing into several receiving chambers, it is possible to remove liquids of different degrees of purity. For example, it is conceivable that liquid from the first receiving chamber, which is located upstream in the conveying direction of the other chambers, in turn fed to a reservoir, so that this liquid can be fed to the separator again. In a further preferred embodiment, the at least one first receiving chamber has a vacuum connection for connecting a vacuum source. The vacuum source is preferably designed as a vacuum pump. The vacuum port is preferably arranged so that it is arranged in the usual operation above a liquid level in the chamber. The vacuum connection can be provided with a membrane, so that no liquid can pass through the vacuum connection to the vacuum source. Preferably, the chamber is largely sealed against the screening unit. As a result, the liquid can be filtered even better, or sieved, because the liquid is "sucked" through the sieve unit, and the filter cake which is formed has a smaller liquid fraction. that these have a total of a common ventilation, for example, by individual partition walls of the chambers are formed at a distance from the screen unit.Thereby, it is sufficient to use a single vacuum pump for the entire separator device. According to a further preferred refinement, the separator device has a liquid feed for supplying liquid to the separator device, wherein the liquid feed has a liquid feed outlet which opens in the conveying direction at an upstream end of the first sieve unit above the sieve surface. The separator device preferably has boundary walls laterally of the sieve unit (s) so that liquid can not flow down laterally from the sieve units. It can also be provided that a wall or another type of boundary is provided at the upstream end, so that liquid can not flow down counter to the conveying direction of the sieve unit. The liquid should remain as possible on the screen surface and pass through the screen openings in the receiving chamber. The Flüssigkeitszuführauslass preferably extends across the entire width transverse to the conveying direction, so that liquid is supplied evenly to the screen unit.

In a preferred development, the separator device has an overflow drain, which is arranged above the liquid feed outlet and serves to discharge excess liquid. By disposing the overflow drain above the liquid feed outlet, the liquid feed outlet is utilized as a restriction against unwanted drainage of liquid from the sieve unit. The liquid emerging from the overflow drain is preferably fed back into a reservoir or a container.

In a further preferred embodiment, the separator device has a roller arrangement with at least one first roller, which is arranged above the screen surface for acting on a filter cake formed. The roller preferably rests on the filter cake and exerts a force in a predetermined area on this. As a result, on the one hand, the filter cake is further compressed and liquid pressed out. On the other hand, the roller also forms a boundary so that liquid can not run down unintentionally in the conveying direction of the screen unit.

Preferably, the roller assembly comprises an adjustable tensioning device, by means of which the roller can be tensioned against the screen surface. This makes it possible to adjust the force and / or the range of force. The tensioning device preferably has a tension spring and a device to adjust the tension spring. The roller may for example be arranged on a pivot arm, which allows a relative positioning of the roller to the screen surface. Furthermore, it is preferred that the roller arrangement comprises a second roller, which is arranged at a distance from the first roller, and is adjustable in the conveying direction. The position of the roller in the conveying direction is therefore preferably adjustable. Preferably, the second roller is disposed upstream of the first roller. As a result, the filter cake can be compressed before reaching the first roller and liquid can be pressed out. It can be provided that the separator device has a second Flüssigkeitszuführauslass, which is arranged downstream of the second roller. The second roll forms a boundary for the liquid, so it may be preferable to add new liquid after the second roll, which is then also filtered by the filter cake already formed. This liquid may, for example, be taken from a receiving chamber located upstream of the second roller.

In a further preferred embodiment, the separator device has a filter membrane which is arranged on the screen surface and can be conveyed together with the filter cake. In a first variant, the filter membrane is an endless circulation filter membrane. Such a filter membrane may for example be formed from a plastic material, a nonwoven material or a metal material. The endless circulation filter membrane can basically be formed as known in the art and is preferably cleaned, for example backwashed, in the section which does not bear against the screen surface by means of a cleaning unit. Preferably, a separate drive is provided for the endless circulation filter membrane, which moves along in the conveying direction.

In a second variant, the filter membrane is a consumption filter membrane which can be separated out of the separator device with the filter cake. Such a filter membrane is preferably a filter membrane made of a nonwoven material, in particular a compostable. Preferably, a separate filter membrane is provided for each sieve unit, which is conveyed through the sieve unit together with the filter cake. As a result, the filtration of the liquid is further improved.

According to a further aspect of the invention, the object mentioned at the outset is achieved by a separator system having a first separator device according to one of the previously described preferred embodiments of a separator device according to the first aspect of the invention, and a second separator device according to one of the preferred embodiments described above Separator device according to the first aspect of the invention, which is arranged downstream of the first separator device and receives filter cake from the first separator device, wherein liquid is supplied from the first receiving chamber of the first separator to the second separator. As a result, a particularly effective filtering is achieved. The liquid from the first receiving chamber of the first separator device, which is preferably arranged at the upstream end of the first Separatorvorrich- device is still loaded with relatively high solids. By supplying this liquid to the second separator device, it is effectively filtered. The second separator device already receives filter cake at the upstream end, so that the liquid supplied to the second separator device is additionally filtered by the already existing filter cake. It should be understood that the separator device according to the first aspect of the invention and the separator system according to the second aspect of the invention have the same and similar sub-aspects as set forth in particular in the subclaims. In this respect, reference is made in full to the above description. According to a third aspect of the invention, the above-mentioned object is achieved by a method for separating solids from solids-laden liquids, comprising the steps of: supplying solids-laden liquid to a separator device according to one of the above-described preferred embodiments of a separator device according to the first aspect of the invention; and moving the first screening unit along the first trajectory to form a filter cake.

It should be understood that the separator device according to the first aspect of the invention and the method for separating solids according to the third aspect of the invention have the same and similar sub-aspects as set forth in particular in the dependent claims. In this respect, reference is made in full to the above description.

Embodiments of the invention will now be described below with reference to the drawings. These are not necessarily to scale the embodiments, but the drawings, where appropriate for explanation, executed in a schematized and / or slightly distorted form. With regard to additions to the teachings directly recognizable from the drawings reference is made to the relevant prior art. It should be noted that various modifications and changes may be made in the form and detail of an embodiment without departing from the general idea of the invention. The in the Description, features of the invention disclosed in the drawings and in the claims may be essential both individually and in any combination for the development of the invention. In addition, all combinations of at least two of the features disclosed in the description, the drawings and / or the claims fall within the scope of the invention. The general idea of the invention is not limited to the exact form or detail of the preferred embodiments shown and described below or limited to an article which would be limited in comparison with the subject matter claimed in the claims. For simplicity, the same reference numerals are used below for identical or similar parts or parts with identical or similar function.

The invention will be explained in more detail with reference to an embodiment with reference to the accompanying figures. Showing:

1 shows a Separatorvorrichtung according to a first embodiment;

FIGS. 2a-d each show a position of the screening unit along the movement path; 3 shows a perspective view of the conveyor;

Fig. 4 is a front view of the conveyor;

Fig. 5a-5c three different cross-sections of beams;

6 shows a second embodiment of a separator device;

7 shows a third embodiment of a separator device; 8 shows a fourth embodiment of a separator device;

9 shows a fifth exemplary embodiment of a separator device;

10 shows a variant of the fifth embodiment;

Fig. 1 1 a separator system with two Separatorvorrichtungen;

FIG. 12 shows a sixth exemplary embodiment of a separator device; FIG. and 13 shows a seventh embodiment of a separator device.

A separator 1 for separating solids from liquids 2 comprises a conveyor 4 for conveying the solids-containing liquid 2, and a drive 6 for driving the conveyor 4. The separator 1 according to this first embodiment (FIG. 1) comprises a first, a second or a third receiving chamber 8a, 8b, 8c, which divide a collecting container 10 in the transverse direction, transverse to a conveying direction F. The receiving chambers 8a, 8b, 8c are arranged below the conveyor 4 and provided to receive downwardly flowing liquid 2a. The conveyor 4 is arranged on the reservoir 10, which provides a support for the conveyor 4. Even if the collecting container 10 is shown here without frame, it should be understood that a frame for the collecting container 10 is provided in the usual construction, so that the separator device 1 can be set up on a floor or a further unit.

The separator device 1 has a separator section 12, in which the liquid 2 is separated into solids-free or slightly solids-laden liquid 2a and filter cake 2b, which consists predominantly of solids. The separator section 12 is bounded laterally by two side walls 14 (only one side wall in FIG. 1) and has an outlet chute 18 at the downstream end 16 in the conveying direction. The filter cake 2b is conveyed out of the separator device 1 via the discharge chute 18. Furthermore, the separator device 1 has a liquid feed 20, which has a Flüssigkeitszuführauslass 22, which is arranged in the conveying direction F at an upstream side end 24 of the separator 1. Liquid 2 is fed to the separator section 12 via the liquid feed outlet 22. Above the liquid outlet 22, the separator device 1 has an overflow drain 26, which serves to discharge excess liquid 2 and, in this embodiment, opens directly into a storage container 28 in order to return the excess liquid 2 to the storage container 28.

The liquid feed 20 is connected via a feed line 30 to an outlet 32 of a pump 34, which in turn can suck liquid 2 from the storage container 28 via a line 36. The pump 34 is formed in this embodiment as a rotary piston pump 35. Rotary lobe pumps have the advantage that they can pump solids-laden liquid in a particularly advantageous manner and are therefore particularly suitable in the present case. The bottom of the separator section 12 is bounded by a first screen unit 40 and a corresponding support unit 42. The screen unit is intended to form a filter cake on its screen surface 44 during operation. The screen unit 40 and the corresponding first support unit 42 will be explained in detail with reference to FIGS. 2 to 4.

As is further apparent from FIG. 1, the first receiving chamber 8 a has a first liquid outlet 46, which is connected to an outlet line 47. The first outlet line 47 opens into a first outlet pump 48, which in turn is in this embodiment designed as a rotary piston pump 49. Similarly, the second receiving chamber 8b has a second liquid outlet 50 connected to a second outlet conduit 51, which in turn opens into a second outlet pump 52. The third receiving chamber 8c accordingly has a third liquid outlet 53, which is connected to a third outlet line 54, which opens into a third outlet pump 55. The outlet pumps 47, 52, 55 are only optional. The Separatorvorrichtung also works with only one pump or even without a pump, purely gravity-driven.

The liquid 2 flowing out of the respective outlets 46, 50, 53 has various solids loadings; At the beginning of the separator section 12, relatively many solids still pass through the first screening unit 40 into the first receiving chamber 8a. At the end of the separator section 12, a certain filter cake 2b has already formed on the screen surface 44, which additionally acts as a filter and thus the liquid 2 , which is taken from the third liquid outlet 53, a much lower solids loading.

It is conceivable that the liquid 2, which is taken from the first liquid outlet 46, is supplied to the reservoir 28 for further filtering. It can also be provided that the liquids from the various outlets 46, 50, 53 are supplied to other collection containers for different uses.

According to this first exemplary embodiment (FIG. 1), the separator device furthermore has a vacuum connection 56 which, according to this exemplary embodiment, opens into the third receiving chamber 8c. The three receiving chambers 8a, 8b, 8c are separated by partitions 9a, 9b, which, however, are not flush with the overlying first screening unit 40, so that air and other gases from the first to the second and to the third receiving chamber 8a, 8b, 8c can get. Therefore, it is sufficient to provide a single vacuum port 56 for all three chambers 8a, 8b, 8c in common.

To the vacuum port 56, a negative pressure source 57 is connected, which is formed in this embodiment as a vacuum pump 58. This makes it possible to further improve the separation of the solids-laden liquid, since liquid is "sucked" from below through the filter cake 2b.

Furthermore, the separator device according to this first exemplary embodiment has a roller arrangement 60 which has a first roller 62 which is arranged above the screen surface 44 for acting on the filter cake 2b formed. The roller 62 is driven by the filter cake 2b moving in the conveying direction F and rotates as indicated by the arrow 64. A roller 62 of the roller assembly 60 is shown in detail D in Fig. 1 in more detail. The roller 62 is rotatably mounted on a pivot lever 66, which in turn is articulated by means of a hinge 68 on the side wall 14. The pivot lever 66 is biased by means of a clamping device 70 in the direction of the screen surface 44, the clamping device 70 has in this embodiment, a tension spring 72 which acts on the pivot lever 66 and cooperates at the other end with an adjusting device 74. By means of the adjusting device 74, the bias voltage applied by the spring 72 can be increased or decreased. For this purpose, the tensioning device 74 has a turning screw 75, which can tension the spring 72.

With reference to FIGS. 2 to 4, the exact structure of the conveying device 4 and in particular the first screening unit 40 and the corresponding first supporting unit 42 will now be described. The first screening unit 40 is shown in FIGS. 2a to 2d in four different positions during which it is moved along a movement path B. The trajectory B is now indicated in Fig. 2a as a dashed line and is circular in this embodiment. The first screening unit 40 has a plurality of first screen openings 78 (see Fig. 4) and the first support unit 42 has a corresponding plurality of first support elements 80 which can at least partially engage in the first screen opening 78, so that in a first section B1 of the movement path B, the first screen openings 78 are released and in a second section B2 of the first movement path B, the first support elements 80 of the first support unit 42 at least partially extend into the first screen openings 78 to support the filter cake 2b. In this embodiment, the conveyor 4 is as So-called Hubbalkenförderer 5 formed and the first screening unit 40 has a plurality of mutually parallel and spaced beam 82, which define the slit-shaped screen openings 78 (see Fig. 4). Although only one beam 82 of the first screening unit 40, a slot-shaped screen opening 78 and a support element 80 are shown in FIG. 4, it should be understood that a plurality is present and the further elements can be recognized in FIG. 4.

The trajectory B has two sections, namely a first section B1 and a second section B2. FIGS. 2a and 2c show the first screening unit 40 at the transition between the second and first sections (FIG. 2a) and between the transition between the first and second sections (FIG. 2c) in the conveying direction F. That is, in the figures 2a and 2c, the screen surface 44 is aligned in a plane with a support surface 43 of the first support unit 42. In Fig. 2b, the first screen unit 40 is at top dead center T1 of the trajectory B in the first section B1 and thus the screen surface 44 is above the support surface 43, which is formed by the first support unit 42. Then moves the sieve unit 40 along the movement path 3, it moves back slightly downwards and with reference to Figure 2 also to the left. In FIG. 2c, the first screening unit 40 can then be seen at the transition between the first and the second section B1, B2, and in FIG. 2d at the bottom dead center T2 of the movement path B. In the second section B2 of the movement path B, the support surface 42 2d), so that in this section B2 of the movement path B of the filter cake 2b is supported by the support surface 43 of the support unit 42. In the second section B2 of the movement path B, the screening unit 40 moves back substantially in the direction opposite to the conveying direction F back to the transition point between the second and first section B1 and thus to the position as shown in FIG. 2a. By raising and lowering the beams 82 of the first screening unit 40, therefore, the filter cake 2b can be conveyed, for which reason the conveying means 4 is also referred to as lifting beam conveyor 5.

As is now illustrated in FIGS. 3 and 4, the conveying device 4 in addition to the first screening unit 40 additionally has a second screening unit 90 and a third screening unit 94. The second and third screening units 90, 94 are formed identically to the first screening unit 40 and likewise have a plurality of second beams 91, or third beams 95, which form between them a corresponding plurality of second screen openings 92 and third screen openings 96, respectively , Similarly, corresponding second and third support units 93, 97 are provided, which are identical to the first support unit 42 and also have bar-shaped second and third support elements 98, 99. The second and third beam-shaped support members 98, 99 engage the second and third screen openings 91, 95, as also described with respect to the first screen unit 40.

Specifically, in this embodiment, the first, second, and third support units 42, 93, 97 are integrally formed and have identical beam-shaped support members 80, 98, 99.

For driving the first, second and third screening units 40, 90, 94, a common drive 6 is provided. The drive 6 is shown in FIGS. 2 to 4 without a motor, but it should be understood that for this purpose a motor, such as an electric motor, may be provided.

The drive 6 in this embodiment comprises a first and a second drive shaft 100, 102 which are each rotatable about an axis of rotation R1, R2, the first drive shaft 100 has a first eccentric portion 104, in turn, a first eccentricity 106, a second eccentricity 108 and a third eccentricity has 1 10. The second drive shaft 102 is formed identical to the first drive shaft 100 and has a corresponding eccentric portion 1 12, with a first, second and third eccentricity 1 14 (only an eccentricity seen in Figures 2 to 3). The first, second and third screening units 40, 90, 94 are each mounted with a first drive section 16 1, 17, 18 on the first eccentric section 104. The first screening unit 40 is mounted with its first drive section 1 16 on the first eccentricity 106, the second screen unit 90 is mounted with its first drive section 1 17 on the second eccentricity 108, and the third screen unit 94 is with its first drive section 1 18 on the third eccentricity 1 10 stored.

Correspondingly, the first, second and third screening units 40, 90, 94 are provided with a second drive section 120 (only the second drive section of the first screen unit 40 can be seen in the figures).

Now, when the drive shafts 100, 102 rotate in the direction indicated by the arrows in FIGS. 2a, 2b, 2c, 2d, the eccentricities 106, 108, 110, 114 also rotate about the axes of rotation R1, R2, as of FIG Point in the eccentricities 106, 1 14 in the Figures 2a to 2d displayed. Accordingly, due to the eccentricities on which the screening units 40, 90, 94 are mounted, they are forced to move on the movement path B. They are forced to move in an identical trajectory in a circular motion in accordance with the rotation of the eccentricities 106, 108, 110, 114 around the axes of rotation R1, R2.

To be particularly advantageous, it has been found that the eccentricities 106, 108, 1 10 of an eccentric portion 104 are rotated against each other, or are phase-shifted. In this embodiment, the phase shift is 180 °. The first eccentricity 106 and the third eccentricity 1 10 are arranged in phase. The second eccentricity 108 is rotated relative to the first eccentricity 106 and the third eccentricity 1 10 by 180 °. This means that the movement along the movement path B of the second screening unit 90 relative to the first and third screening units 40,

94 travels 180 °. While the first and third screen units 40, 94 are in a position as shown in Fig. 2b, the second screen unit 90 is in a position as shown in Fig. 2d. As the first and third eccentrics 40, 94 are moved upward, the second screen unit 90 moves down. In this way, the separator device 1 according to the present invention is particularly energy-saving, since partially the gravitational force of the first and third sieve units 40, 94 can be used to move the second sieve unit 90 upwards, and vice versa. Furthermore, this allows a particularly continuous process of filtration or sieving to take place and the transport of filter cake 2b takes place largely continuously.

It has already been mentioned above that the screening units 40, 90, 94 bars 82, 91

95, and the support units 42, 93, 97 corresponding bar-shaped Stützele- elements 80, 92, 96 have. The lateral distance, in the direction of the axes of rotation R1,

R2 between two adjacent beams 82, 91, 95 is slightly larger than the width of each bar-shaped support elements 80, 92, 96 disposed therebetween. This results in small gaps through the liquid from the screen surface 44 into the first, second and third Receive chambers 8a, 8b, 8c can get. In order to make the filtration process more effective, the beams 82, 91, 95 preferably have a cross-section that tapers downwardly. Three such cross sections are illustrated in FIGS. 5a, 5b, 5c. In all three variants, the beam is 82 the first screening unit 40; It should be understood that the beams 91, 95, the second and the third screen units 90, 94 may also be formed.

In all three variants, the beam 82 is formed flat on an upper side so as to form the screen surface 44. The planar training serves to carry the filter cake 2b and to move it during movement of the screening units 40, 90, 94 in the conveying direction F.

In the first embodiment (Figure 5a), the beam 82 is tapered downwardly and has a triangular cross-section.

In the second embodiment (Figure 5b), the beam 82 also tapers downwardly, but does not taper sharply, but trapezoidally. As a result, it offers a little more stability and is less susceptible to wear.

Another variant is shown in Fig. 5c. There, the beam is T-shaped. The T-shaped configuration has the advantage that when the screening units 40, 90, 94 are moved, the enlargement of the gap between the respective beams 82 and the beam-shaped support elements 80 rapidly increases, namely when the head 122 of the T has its lower edge 123 over the upper surface of the beam-shaped support members 80, which form the support surface 43. This makes it possible to lead even more liquid from the separator section 12 into the first, second and third receiving chambers 8a, 8b, 8c. In the second embodiment illustrated in Fig. 6, the separator device 1 differs from the first embodiment (Fig. 1) substantially by the roller assembly 60. The same and similar elements are denoted by like reference numerals and, thus, the above description is fully incorporated by reference. In the following, reference will be made in particular to the differences between the first exemplary embodiment (FIG. 1) and the second exemplary embodiment (FIG. 6).

According to this exemplary embodiment (FIG. 6), the roller arrangement 60 has, in addition to the first roller 62, a second roller 130 and a third roller 140. The second and third rollers 130, 140 are disposed upstream of the first roller 62 in the conveying direction F. The rollers 130, 140 serve as well as the first roller 62 to compress the filter cake 2b, which forms on the screen surface 44, so as to push out more liquid 2 from this, and the solids content of the filter cake 2b to increase. Furthermore, the rollers 62, 130, 140 form a boundary for flowing liquid 2, so that liquid 2 can not readily flow out of the separator device 1 in the direction of the outlet 18.

Further, the rollers 130, 140 are formed in this embodiment (Fig. 6) so that they are adjustable in the conveying direction F. This is illustrated in the rollers 130, 140 in that in each case an arrow 131, 141 indicates the adjustability. For example, the roller 130 is slidable so as to be displaceable to the position represented by the dashed roller 130 '. The same applies to the roller 140, which can be shifted to a position characterized by the dashed roller 140 '. The rollers 130, 140 are received with their axes (not shown) in just such pivoting levers (also not shown), so that they are displaceable.

The displacement of the rollers 62, 130, 140 is also illustrated in detail D of Figure 6: Preferably, the entire roller assembly 60 is moved, but in any case the respective roller together with pivot lever 66 and preferably clamping device 70. For the pivot lever 66 can be a slot or single discrete openings in the wall 14 may be provided. The same applies to the clamping device; Individual discrete receptacles can also be provided for these so that they are displaceable, as indicated by the solid lines of the clamping devices 70 ', 70 "in detail D. Preferably, several nuts for the rotary screw 75 of the clamping device 70 are provided on the wall 14 , so that for adjusting each of the rotary screw 75 must be screwed only by the corresponding nut.

In accordance with the rollers 130, 140, the partitions 9b, 9a are also displaceable in this embodiment (Figure 6) (see arrow 144, 145) and can be marked at the positions indicated by the dashed partitions 9b ', 9a' are to be moved. As a result, the solids loading of the liquid, which can be removed through the liquid outlets 46, 50, 53, can be further adjusted.

In addition, it is provided in this exemplary embodiment that a second liquid feed 150 has a second liquid outlet 152 which supplies liquid between the first roll 62 and the second roll 130 to the separator section 12. Furthermore, a third liquid feed 154 with a third liquid outlet 156 is provided, which feeds liquid 2 between the second roll 30 and the third roll 140. This makes it possible in a targeted manner to filter further liquid 2, and in particular to use the filter cake 2b, which has already formed up to this section of the filter section 12, as an additional filter.

Further, it is possible to provide a filter membrane 160 for additional filtering of the liquid, as described below with reference to the third and fourth embodiments (Figures 7 and 8).

The same and similar elements are in turn provided with the same reference numerals, so that reference is made in full to the above description. Overall, the construction of FIGS. 7 and 8 of the separator device 1 is simplified, and some of the elements shown in FIGS. 1 and 6 are omitted in FIGS. 7 and 8. Nonetheless, it should be understood that the separator device 1 according to the third and fourth embodiments can also have all the elements shown in FIGS. 1 and 6, in particular the roller arrangement and the three receiving chambers 8a, 8b, 8c.

The essential difference between the third embodiment and the first two embodiments as well as the fourth embodiment and the first two embodiments lies in the filter membrane 160. In the third embodiment (Figure 7), the filter membrane is formed as an endless circulation filter membrane 162 and in the fourth embodiment (Fig 8) as a consumption filter membrane 164.

In the third embodiment (Figure 7), the endless circulation filter membrane 162 is guided above the screen surface 44 and passes through the Flüssigkeitszuführauslass 22 and the outlet 18. On the separator 1 four guide rollers 166a, 166b, 166c, 166d, provided so that the endless circulation filter membrane 162 in Can go along conveying direction. Preferably, at least one of the deflection rollers 166a to 166d is driven in such a way that the filter membrane 162 moves at approximately the same speed as the filter cake 2b. Alternatively, the endless circulation filter membrane 162 is conveyed by the conveyor 4 alone. For this purpose, it is conceivable that the first screening unit 140 has form-locking elements, such as projections or the like, so that the endless circulation filter membrane 162 can be effectively conveyed.

Further, it is preferably provided that below the collecting container 10, or in addition to this, a backwashing device for cleaning the endless circulation filter membrane 162 is provided. In the fourth embodiment, the filter membrane 160 is configured as a consumable filter membrane 164 and is provided on a roll 168. It runs as well as the endless circulation filter membrane 162 through the Flüssigkeitszuführauslass 22 and above the screen surface 44 to the outlet. There it runs down, as represented by section 169, and is composted along with filter cake 2b. The consumption filter membrane 164 is preferably conveyed solely by the conveyor 4 forward in the conveying direction F.

It can be provided that a separate web of filter membranes 160 is provided for each screening unit 40, 90, 94 (see FIGS. This has advantages when several screening devices 40, 90, 94 are provided, which are arranged on phase-shifted eccentricities.

FIG. 9 shows a fifth exemplary embodiment of the separator device 1. The same and similar elements are provided with the same reference numerals and in this respect, reference is made in full to the above description. An essential difference of the separator device 1 according to the fifth embodiment (FIG. 9) is that this separator device 1 does not operate with negative pressure as the first four embodiments, but with overpressure. That is, it is arranged on the collecting container 10 no vacuum pump. The collecting container 10 in turn has three receiving chambers 8a, 8b and 8c, which may be provided in a known manner with an outlet 46, 50, 53, which is not shown in Figure 9, however.

In order to promote the formation of filter cake 2b, the separator device 1 according to this fifth exemplary embodiment has a tank 170, which is arranged above the conveying device 4. The tank 170 has side walls 171, 172 which terminate flush with the sump 10 and the conveyor 4. In conveyor downstream F, the tank 170 is sealed by the roller 62. For this purpose, a seal 173 can be provided between the roller 62 and the side wall 172, for example in the form of a flexible wall, which is pressed against the roller 62 due to the hydrostatic pressure, or in the form of a sealing lip. In this embodiment (FIG. 9), the tank 170 extends in the conveying direction over the entire length. It should be understood that the tank 170 may also be shorter in length. As such, the tank 170 is at an inlet 174 with a Riser 175 connected, which is directly connected to the outlet 32 of the pump 34. The pump 34 is controlled so that it can set a pressure P in a predetermined range in the tank 170. The pump 23 is controlled so that there is a sufficient hydrostatic pressure P to press liquid 2 through the conveyor 4 to deposit a filter cake 2b. For this purpose, for example, a pressure sensor may be provided in the tank 170, or it is tapped off the torque of the pump and adjusted by the applied torque to the pump 34, the pressure P.

A variant is shown in FIG. In this exemplary embodiment, the riser 175 has an extension 176, which also serves as a return 177 for liquid 2. By the height Z, the pressure P in the interior of the tank 170 can be increased significantly in order to further increase the possible throughput. At the uppermost point of the extension 176, a vent 178 is provided, which prevents an empty suction of the extension 176 into the container 28. Finally, FIG. 11 shows a separator system 200. The separator system 200 has two separator devices 1a, 1b arranged one behind the other in the conveying device F. While the separator device 1 a is formed substantially corresponding to the separator device 1 according to the first embodiment (FIG. 1), the separator device 1 b is formed slightly differently. In particular, the upstream end 24 is deviated. At the upstream end 24 of the separator device 1b, there is no liquid feed outlet 22 as known from the first embodiments (Figures 1 to 8), but liquid 2 is supplied from above through a feed tube 202. The feed tube 202 is approximately formed like the liquid supply 150, 154 in the second embodiment (see Fig. 6). This makes it possible for filter cake 2b to be transported on directly from the first separator device 1a to the second separator device 1b. The liquid 2, which is supplied to the second separator 1 b, comes from the receiving chamber 8 of the first separator 1 a. The liquid 2a, which is removed from the second separator device 1 b via the outlet 204, is substantially free of solids since it has been freed of solids by two separator sections 12.

Here theoretically any number of separator devices 1 can be connected in series, depending on the present filtration task. Thus, it is sufficient for some tasks to provide only one separator device 1, other tasks require the provision of three Separatorvorrichtungen 1. It is also conceivable that the Siebein- Units 40 of the first and second Separatorvorrichtungen 1a, 1 b can be designed differently, in particular have different sized screen openings.

FIGS. 12 and 13 now show two further exemplary embodiments of the separator device 1. The exemplary embodiment according to FIG. 12 shows a variant of the exemplary embodiments shown in FIGS. 2a to 2d, wherein instead of a first and second drive shaft 100, 102 (see FIGS to 2d) in the embodiment of FIG. 12, only one drive shaft, namely the first drive shaft 100 is provided. It should be understood that just as well as the second drive shaft 102 could be provided. Likewise, by way of example only the first eccentricity 106 of the first drive shaft 100 is shown in the exemplary embodiment according to FIG. 12, even if further eccentricities may be present. In this respect, reference is made in full to the above description.

The peculiarity in this sixth exemplary embodiment (FIG. 12) is that the separator device 1 comprises a lever drive 210 which serves to drive the first screening unit 40. The first screening unit 40 is, as already described with reference to FIGS. 2 a to 2 d, mounted on the first eccentricity 106. However, in order to drive the first screening unit 40 uniformly, the lever drive 210 serves. In this exemplary embodiment (FIG. 12), this comprises a first drive rod 212, which is articulated to the first eccentricity 106 via a first joint 214. The other end of the first drive rod 212 is connected via a second joint 216 to a connecting lever 218, which in turn is rotatably mounted on a fixed bearing 222 via a third joint 220. The fixed bearing 222 may, for example, be a section of the receiving chamber 8a, 8b, 8c or another non-rotating element. The connecting lever 218 is further connected via a fourth hinge 224 to a second drive rod 226, which in turn is pivotally connected by means of a fifth hinge 228 with the second drive portion 120. In this way, a rotation of the first joint 214 about the rotation axis of the first drive shaft 100 can be converted into an up and down movement of the fifth joint 228, so that the first screen unit 40 is moved as a whole.

In the illustrated embodiment (FIG. 12), an opposite movement of the first and second drive sections 1 17, 120 takes place due to the deflection The connecting lever 218. It should be understood that other movement patterns can be imaged by a corresponding translation or further deflection, in particular a same direction movement or a translation of various movements. Furthermore, it is also possible, by appropriate coupling of further levers or drive rods, also to drive further separator devices 1, which are connected in series, as described in particular with reference to FIG. 11. Overall, then only one drive shaft per Separatorvorrichtung would be used, or even only drive shaft can be used together for all Separatorvorrichtungen, whereby the overall construction can be simplified.

FIG. 13 now shows an embodiment which has been modified in contrast, in which, again by way of example, two drive shafts, namely a first drive shaft 100 and a second drive shaft 102, are used. The illustration of the seventh exemplary embodiment in FIG. 13 is based on the second exemplary embodiment according to FIGS. 2 a to 2 d and, therefore, reference is made in full to the above description.

While in the second embodiment (Figures 2a to 2d), the first screen surface 44 and the first support surface 43 are aligned parallel to each other, they are employed in the seventh embodiment (Fig. 13). More specifically, the right side of the first screen unit 40 with reference to Fig. 13 is slightly lower than the left side, so that the angle α is formed (see the second figure in Fig. 13). In a movement sequence, which is shown in the four Figures 1 to 4 of FIG. 13, it can then be understood that the first screening unit 40 is only gradually immersed in the first support unit 42. By way of example, beginning with the fourth illustration, it can be seen that the screen surface 44 lies above the support surface 43 both in the left and in the right side of FIG. During a rotation of the first and second drive shafts 100, 102, the first sieve unit 40 now moves downwards, so that firstly the right side of the first sieve unit 40 is immersed under the first support unit 42, with reference to FIG. 13, so that in the third illustration of FIG 13 on the right side, the first support surface 43 is above the first screen surface 44, on the left side, however, the first screen surface 44 is above the first support surface 43. Turning the drive shafts 100, 102 now continue, also comes the first screen surface 44 on the left side of Fig. 13 (second figure) below the first support surface 43. The filter cake is completely stored in this state. As can be seen, the filter cake is thus initially deposited on the right side with reference to FIG. 13 on the first support surface 43, while it is transported further on the left side of FIG. In addition, the filter cake on the left side can be lifted earlier. That is, the filter cake is stretched as a whole. This makes it possible to pull the filter cake apart and reduce its thickness, making it again liquid permeable. In reverse drive mode, it is also possible to compress the filter cake, so as to achieve a more compact filter cake.

It should be understood that the drive mode of FIG. 12 and also the employment in the angle α of Figure 13 can also be transferred to the previous embodiments.

Claims

claims

A separator device (1) for separating solids from liquids (2), comprising:

a conveyor (4) for conveying a solids-containing liquid (2), a drive (6) for driving the conveyor (4) and

at least one first receiving chamber (8a, 8b, 8c) disposed below the conveyor (4) and adapted to receive downwardly flowing liquid (2a),

characterized in that

the conveying device (4) comprises at least one first screening unit (40), which is provided to form a filter cake (2b) on a first screening surface (44) of the first screening unit (40) during operation, and

a first support unit (42) corresponding to the first screening unit (40),

wherein the first screening unit (40) is movable by means of the drive (6) on a first movement path (B), such that the filter cake (2b) is moved along a first section (B1) of the first movement path (B) by means of the first screening unit (40) ) is movable in a conveying direction (F), and along a second portion (B2) of the first movement path (B) by means of the first support unit (42) can be supported.

The separator apparatus of claim 1, wherein the first screen unit (40) has a plurality of first screen openings (78) and the first support unit (42) has a corresponding plurality of first support members (80) at least partially in the first screen openings (78) can engage, so that in the first section (B1) of the first movement path (B), the first screen openings (78) are released, and in the second portion (B2) of the first movement path (B), the first support elements (80) of the first support unit (42) extend at least partially into the first screen openings (78) to support the filter cake (2b).

3. Separator device according to claim 1 or 2, wherein the first trajectory (B) is a circular path.

4. Separator device according to claim 3, wherein the central axis of the circular path is aligned substantially parallel to the screen surface (44) of the first screening unit (40).

5. Separator device according to one of the preceding claims, wherein the conveyor (4) comprises a second screen unit (90) with a corresponding second support unit (93), wherein the second screen unit (90) on a second movement path (B) is movable.

6. Separator device according to claim 5, wherein the second screening unit (90) in the conveying direction (F) next to the first screening unit (40) is arranged.

7. Separator device according to claim 5, wherein the second screening unit (90) is arranged in the conveying direction (F) downstream of the first screening unit (40).

8. Separator device according to one of claims 5 to 7, wherein the second movement path (B) is a circular path, and wherein the first and second screening unit (40, 90) out of phase along the circular path are movable.

9. Separator device according to claim 8, wherein the phase shift is approximately 180 °.

A separator apparatus according to any one of the preceding claims, wherein the first screen unit (40) comprises a plurality of parallel spaced bars (82) defining a plurality of slot shaped screen openings (78).

1 1. Separator device according to claim 10, wherein the bars (82) taper in cross section downwards.

12. Separator device according to claim 1 1, wherein the bars (82) in cross section are approximately triangular or trapezoidal.

13. separator device according to claim 1 1, wherein the bars (82) are in cross-section approximately T-shaped.

14. Separator device according to one of the preceding claims, wherein the first support unit (42) forms a first support surface (43) with the first screen surface (44) an angle α in a range of 0 ° to 10 °, preferably 1 ° to 5 ° includes.

15. Separator device according to one of the preceding claims, wherein the drive (6) has a first drive shaft (100) having a first eccentric portion (104) a first eccentricity (106), wherein the first screening unit (40) is mounted with a first drive portion (1 16) on the first eccentricity (106).

16. Separator device according to claim 15, wherein the first drive shaft (100) has a second eccentricity (108) formed on the first eccentric section (104), the second screen unit (90) having a first drive section (11) on the second eccentricity ( 108) is stored.

17. separator device according to claim 15 or 16, wherein the drive (6) has a second drive shaft (102) having a first eccentric portion (1 12) with a first

Eccentricity (1 14), wherein the first screening unit (40) with a second drive portion (120) on the first eccentricity (1 14) of the second drive shaft (102) is mounted.

18. Separator device according to claim 15 or 16, wherein the drive (6) comprises a lever drive (210) and the first screening unit (40) with a second drive section (120) is coupled to the lever drive (210).

19. Separator device according to claim 18, wherein the lever drive (210) has a first drive rod (212), a second drive rod (226) and a pivotable on a

Fixed bearing (222) mounted connecting lever (218).

Separator device according to one of the preceding claims, wherein the at least one first receiving chamber (8a, 8b, 8c) has a liquid outlet (46, 50, 53) with an outlet line (47, 51, 54), wherein the outlet line (47, 51 , 54) opens into a pump inlet of a pump (48, 52, 55).

21. Separator device according to one of the preceding claims, wherein the at least one first receiving chamber (8a, 8b, 8c) has a vacuum port (56) for connecting a vacuum source (57).

22. Separator device according to one of the preceding claims, comprising a liquid supply (20) for supplying liquid (2) to the Separatorvorrichtung (1), wherein the liquid supply (20) has a Flüssigkeitszuführauslass (22) in the conveying direction (F) at a upstream end (24) of the first screen unit (40) above the screen surface (44) opens.

Separator apparatus according to claim 22, comprising an overflow drain (26) disposed above the liquid feed outlet (22) and serving to drain excess liquid (2).

Separator apparatus according to any one of the preceding claims, comprising a roller assembly (60) having at least one first roller (62) disposed above the screen surface (44) for acting on a formed filter cake (2b).

25. Separator device according to claim 24, wherein the roller arrangement (60) has a preferably adjustable clamping device (70) for tensioning the roller (62) against the screen surface (44).

26. Separator device according to claim 24 or 25, wherein the roller arrangement (60) has a second roller (130) which is spaced from the first roller (62), preferably upstream, arranged and in the conveying direction (F) is adjustable.

A separator apparatus according to claim 25, wherein a further liquid feed outlet (152) is disposed downstream of the second roll (130).

28. Separator device according to one of the preceding claims, comprising a filter membrane (160) which is arranged on the screen surface (44) and can be conveyed together with the filter cake (2b).

The separator device of claim 28, wherein the filter membrane (160) is an endless circulation filter membrane (162).

30. Separator device according to claim 28, wherein the filter membrane is a consumption filter membrane (164) which can be separated out of the separator device with the filter cake.

31. Separator system (200), with

A first separator device (1a) according to one of claims 1 to 30, and a second separator device (1b) according to one of claims 1 to 30, which is arranged downstream of the first separator device (1a) and filter cake (2b) from the first separator device (1a). 1a) receives,

wherein liquid (2a) from the first receiving chamber (8a) of the first separator device (1a) of the second separator device (1 b) is supplied.

32. A process for separating solids from solids laden liquids, comprising the steps of:

- Feeding of solids laden liquid to a Separatorvorrichtung (1) according to one of claims 1 to 30;

Moving the first screening unit (40) along the first movement path (B) to form a filter cake (2b).