EP3313546A1 - Method and device for separating solid and liquid components of a solid-liquid mixture - Google Patents
Method and device for separating solid and liquid components of a solid-liquid mixtureInfo
- Publication number
- EP3313546A1 EP3313546A1 EP15804313.3A EP15804313A EP3313546A1 EP 3313546 A1 EP3313546 A1 EP 3313546A1 EP 15804313 A EP15804313 A EP 15804313A EP 3313546 A1 EP3313546 A1 EP 3313546A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vibrating screen
- solid
- housing
- liquid mixture
- liquid
- 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.)
- Withdrawn
Links
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- 239000000463 material Substances 0.000 description 16
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
- B01D33/03—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
- B01D33/0346—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements
- B01D33/0376—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements supported
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/20—Vibrating the filters
Definitions
- the invention relates to a process which serves to separate a solid-liquid mixture into solid and liquid components.
- the invention relates to a device which also serves to separate a solid-liquid mixture into solid and liquid components.
- a common but not exclusive field of application of such a separation is the treatment of manure in the field of agricultural livestock.
- the problem is to continue to use the considerable slurry quantities. If these are to be spread as fertilizer, considerable agricultural land is required, which is often not available where the livestock is kept, so that it comes to transport trips, if the liquid manure has to be moved to distant areas.
- the attempt to reduce the liquid manure volume by the aqueous components of the manure are evaporated and the manure is dried in this way, often leads to undesirable odor nuisance or
- CONFIRMATION COPY requires a complex air filtration technology.
- the drying of the manure requires considerable amounts of energy for heating in order to evaporate the aqueous constituents in an acceptably short time.
- a generic device which has an upwardly angled extending screen surface. Both above and below the screen surface openings are provided in the housing, which connect to the surrounding atmosphere and the pressure prevailing there. By means of a connecting piece above the screen surface in the housing an over pressure generated and / or a heat medium are supplied into the housing.
- a device which serves to separate solids and liquid from a mixture of both, and in which a vibrating screen is disposed horizontally within an upwardly open trough.
- a pressure gradient is created by creating a negative pressure below the screen surface.
- the tub is open at the top, but can optionally be covered by a hood upwards, the hood serves as a splash guard and is open at the discharge end of the device, ie at its downstream end.
- a funnel-shaped, upwardly open chute at the top of the hood serves as an inlet opening to bring the solid-liquid mixture on the screen surface. From the open discharge end, the solids can be discharged into any suitable container.
- a device which has a housing in which a horizontally arranged screen surface is inclined.
- the screen surface is set in vibration. From above, a solid-liquid mixture is applied to the screen surface. Within the housing, a horizontal liquid level arises, from which the screen surface partially protrudes. Due to the vibrations, the solids are transported down the screen surface while the liquid below the screen surface is withdrawn from the housing. In the entire housing there is negative pressure. On the one hand this increases the separation performance and on the other hand causes no undesirable, for example gaseous, emissions (for example unwanted odors) to escape from the housing into the environment.
- a negative pressure prevails in the entire housing, ie in the housing, which is pressure-tight outside of any supply lines and outputs.
- a negative pressure prevails in the entire housing, ie in the housing, which is pressure-tight outside of any supply lines and outputs.
- there is such a negative pressure above the vibrating screen and below the vibrating screen so that with the set pressure difference with a pressure gradient in the direction of the space below the vibrating screen, the solid-liquid mixture with the set vibrations during the separation process in a kind of floating state above the screen surface can be kept, so that this state can be adjusted by the pulses from the vibrating conveyor with conveying direction in the direction of slightly rising vibrating screen.
- the material to be separated is flowed through by air entraining liquid particles. Below the suspended cake to be separated (solid-liquid mixture), an air flow can also pass through the meshes of the sieve surface while entraining corresponding liquid fractions, so that the separation process takes place at an exceptionally high process speed and the vibrating sieve is permanently cleaned.
- the method according to the invention and the device according to the invention have proven to be particularly suitable for a large number of different fields of application, for example for the
- the inlet through which the solid-liquid mixture passes onto the vibrating screen, opens above the rear end of the vibrating screen in the conveying direction.
- the solid components in the solid-liquid mixture reach the vibrating screen in the region of its rear end so that they are conveyed over the entire length of the vibrating screen until they reach the front end where the discharge opening is provided.
- the movement of the solid components along the length of the vibrating screen promotes the separation of the liquid components from the solid components and thus increases the degree of separation.
- a distributor can be arranged in the housing below the inlet and above the vibrating screen. This distributor is used to optimally exploit the surface of the vibrating screen for separation.
- the distributor does not act in the longitudinal direction or conveying direction of the vibrating screen, but transversely thereto, so distributes the mixture over the width of the vibrating screen and advantageously over its entire width.
- the vibrating screen can be arranged obliquely from bottom to top and operated so that it promotes the solid components obliquely upward.
- the inclination of the inclination can be specified constructively in adaptation to the intended field of application or it can be provided a tilt adjustment of the vibrating screen or the housing in order to adapt the device flexibly to different requirements can.
- the vibrating screen is to adjust the level of the solid-liquid mixture only so high that the vibrating screen protrudes partially above this level upwards.
- a kind of floating filter cake with a high solids content forms on the vibrating screen. This filter cake is on the
- Vibrating screen a particularly effective further separation of the liquid components from the filter cake can be done before the solid components then enter the discharge opening, through which they leave the housing.
- a mesh size of the vibrating screen has proven to be smaller than 0.8 ⁇ , for example, between 0.7 and 0.8 pm.
- high throughput rates of the device were achieved with such mesh sizes. While the proportion of solid constituents within the solid-liquid mixture was about 7 to 8%, it was only about 0.8% in the liquid components coming out of the device.
- the degree of separation can be increased even further and, with the same starting material, the amount of solid constituents can be reduced to about 0.2 to 0.3%, at the expense of one lower throughput of the device.
- the degree of separation can be further improved if the solid constituents coming from the discharge opening are aftertreated in a subsequent second separation step, for example in a screw press.
- the screw extruder consists of a screw, known as a screw conveyor or screw conveyor, which, in a manner known per se, has one or more filters radially outside the screw. has.
- This post-treatment can also be carried out under reduced pressure, as m claim 1 advantageous and carried out according to claims 2 and 3.
- the particularly advantageous embodiment is that this filter has a plurality of slots extending in the longitudinal direction of the screw. Liquid components emerging from the material need therefore not flow transversely to the conveying direction of the screw radially outwards in the manner of a change in direction of about 90 °, but they can due to the longitudinal slots extending with little change in direction over the entire length of the screw and continue to pass radially outward and through the slots.
- the configuration of the screw press described may advantageously comprise a filter having a plurality of flat iron. These flat bars are aligned coaxially with the worm by the flat iron extending lengthwise in the longitudinal direction of the worm. As far as the material cross-section of the flat irons are concerned, they are aligned around the worm radially, so that the width of the flat iron extends radially outward from the worm and the thickness of the flat iron extends in each case tangentially to the worm.
- a structurally simple and economically producible design of this filter for example, consist in that each several flat iron are combined into a package, for example, depending on the thickness of two to ten adjacent flat iron.
- a full-surface contact of the individual flat iron to each other arise at a sufficiently high internal pressure within the filter passages for the liquid to be discharged.
- Spacers are provided between two adjacent packets in the outer radial region of the filter, but not in the radially inner region of the filter so as to give an overall annular and nearly circular cross-section of the filter surrounding the press screw in the manner of a polygonal tube.
- the screw press can be used for separation.
- a conveyor device can be provided which holds the solid components which are either directly from the housing accommodating the vibrating screen. se or indirectly, namely from the downstream second separation stage, promotes to a transfer point.
- the conveyor can be configured in many ways, for example as a conveyor belt or screw conveyor, wherein a screw conveyor is mentioned below purely by way of example.
- the downstream device may be, for example, an open storage bin or a container into which the solid ingredients are added.
- the solid constituents if stored as a debris on a substrate or filled in a container, have a significant temperature level even after days, possibly due to composting processes.
- the solid constituents can therefore for example be placed in a container containing a pipe heat exchanger so that a medium passed through this heat exchanger is heated.
- the proposed device can be designed as a mobile, transportable unit, z. B. be constructed within a container, on a vehicle trailer or the like.
- a supply line from the manure tank is moved to the device, through which the manure from the manure tank enters the device, namely in the housing, which surrounds the vibrating screen.
- a pump is advantageously provided, which promotes the solid-liquid mixture in the housing.
- the aforementioned suction pump in turn promotes the liquid components in the manure tank back and ensures the negative pressure below the vibrating screen.
- a particularly economical use of the proposed device may be that it does not remain permanently unused for a long time next to the slurry tank, but rather is spent from day to day to another slurry tank, for example by a contractor.
- the embodiment of the device as a mobile trailer or the arrangement of the individual components of the device on a mobile trailer allows this mobile use of the device.
- the solid-liquid mixtures can be used in containers, tank trucks or similar for be spent.
- the solids content can be separated as completely as possible from the solid-liquid mixture by means of a stationarily operated device and can be thermally utilized in a combustion plant which is also stationary there.
- a stationary device is not subject to the limitations imposed on a mobile device, for example, in terms of its dimensions, so that stationary devices can be made particularly efficient.
- the device can be used in the agricultural sector, for example for fermenter cleaning by the contents of a biogas digester, for example, is freed from mineral solids such as sand. This avoids that the fermenter slowly silted, and its entire useful volume is made usable again by such a cleaning.
- the essential for the function of the fermenter microorganisms are advantageously recycled to the fermenter by the liquid components are recirculated from the device in the circulation in the fermenter.
- the device is equipped not only with a single vibrating screen, but with two vibrating screens. These two vibrating screens are each arranged in a separate housing.
- the solid-liquid mixture is led to both housings separately by branching a feed line, which brings the solid-liquid mixture to the vibrating screens, and in each of the two housing is provided a separate inlet.
- the performance of the device is substantially doubled, without having to create a single vibrating screen with correspondingly larger, for example, doubled dimensions, which involves considerable design challenges.
- smaller vibrating screens can also cascade the performance of the device in finer stages and adapt to different needs by accordingly two, three or more vibrating screens are operated. In the case of stationary devices, in particular, this can be provided without problems since the maximum permissible road conditions must not be taken into account here.
- the arrangement of two housings and two vibrating screens can also be advantageously used to achieve a particularly high degree of separation, in that the two vibrating screens have different mesh sizes:
- the solid-liquid mixture can first be led out of the manure tank into the housing in which the vibrating screen with the larger mesh size is located. Later, the valve assembly can be switched so that the solid-liquid mixture, which already has a significantly lower Has more solid content, is placed on the vibrating screen with the smaller mesh size, so that now more, previously unfiltered solids can be separated by means of this vibrating screen from the solid-liquid mixture.
- the separation of initially coarser solid constituents by means of the first, coarser-meshed vibrating screen prevents the fine-meshed vibrating screen from becoming too covered and too impermeable by the solid constituents, which would adversely affect the throughput.
- the two differently configured vibrating screens with their different mesh sizes can be used to select in adaptation to the particular starting material present, for example, differently composed Güllesorten, each of the most suitable vibrating screen. This can be particularly advantageous in the case of the already mentioned contracting companies or mobile deployed devices, which are brought to different locations and accordingly charged with possibly very different starting materials.
- the two vibrating screens of different mesh sizes can be connected in series, so that the liquid components are guided out of the coarser vibrating screen onto the finer vibrating screen and only then out of the device.
- valve arrangement can also be designed such that it allows four different operating modes: optionally, the solid-liquid Mixture is performed only on one of the two vibrating screens, namely either first on one or the other second vibrating screen, or thirdly, the solid-liquid mixture is performed in a parallel operation on both vibrating screens, or fourthly, the solid-liquid mixture in Type of a series or series operation on first one and then led the other of the two vibrating screens.
- the corresponding configuration of the valve arrangement and its associated routing of pipelines is known to the person skilled in the art, for example by means of shut-off valves or reversing valves, in particular multiway valves, and therefore does not need to be explained in detail in the context of the present proposal.
- the solid components that form a filter cake resting on the vibrating screen cause a certain sealing of the vibrating screen.
- This seal is advantageous in that it prevents or reduces the suction of air which otherwise could be sucked in by the vibrating screen where an obliquely upwardly extending vibrating screen projects upwardly out of the solid-liquid mixture.
- This sealing through the filter cake therefore increases the suction power in the area where the vibrating screen dips into the solid-liquid mixture and where the liquid from the solid-liquid mixture is to be sucked down through the vibrating screen.
- an overflow edge may therefore be provided on the front end of the vibrating screen in the conveying direction, which projects beyond the vibrating screen extends above. It has the effect that a certain minimum layer thickness of the mentioned filter cake has to be reached and maintained on the vibrating screen before the solid components can overcome this overflow edge and pass from the vibrating screen into the discharge opening.
- the overflow edge may have a height that is between 0.5 and 3 cm, eg. B. about 1 cm. Air can be sucked in this way from top to bottom only through the vibrating screen, and each time when the filter cake lifts due to the vibrations in the short term from the vibrating screen.
- the device can be operated deliberately so that solid components do not have the highest possible dry content, but rather are still liquid and thus pumpable, if this should be advantageous for their further use.
- the degree of separation can therefore deliberately not be set to the maximum, and this is typically associated with an increase in throughput.
- the separation power can be deliberately set low, so that a filter cake but rather a liquid from the vibrating screen enters the discharge, but in comparison to the supplied solid-liquid mixture has a higher proportion of solid components.
- the permeability of the vibrating screen by a lower Opening portion can be reduced, for example, by using a perforated plate instead of a sieve.
- the material As solid constituents, the material is referred to, which leaves the vibrating screen in the conveying direction, passes into the discharge opening, and has a higher solids content than the apparatus supplied solid-liquid mixture, and in particular a higher solids content than that across the Vibrating sieve extracted material called liquid components.
- the so-called solid constituents can therefore also be liquid, for example pumpable. In this case, it may typically be provided not to recirculate the solid constituents, for example to a slurry tank, but to a second tank, for example a tank, which is available stationary or as part of a tanker truck.
- the proposed device serves in this case to concentrate the solid-liquid mixture by providing as a so-called solid constituents a flowable material which has a higher solids content than the originally present solid-liquid mixture.
- Manure for example, has an economic value which depends on the nutrient content, which in turn is determined in particular by the solids content.
- the value of the solid components obtained, which can be applied as a pumpable liquid fertilizer, compared to the originally present solid-liquid mixture can be significantly increased.
- a device according to the proposal can also be used for the otherwise separate solid and liquid components. Using the example of liquid manure separation, first practical experiments have shown that the amount of solid components could be reduced by about 7 to 8% to significantly less than 1%.
- the tube is made from the housing.
- the tube has apertures in its wall in the portion which is within the housing, similar to a drainage tube, so that liquid portion of the solid-liquid mixture can enter the tube.
- the tube is the same negative pressure, as prevails in the housing below the screen surface. Even if solid particles enter the pipe with the liquid entering the pipe, the performance of the entire apparatus is considerably increased. Namely, the device is usually connected to a large reservoir of a solid-liquid mixture, and the liquid filtrate, which is withdrawn from the device is recirculated in this large reservoir, so that from this recycling only the solid is withdrawn, the exits the device.
- the described measure for improving the performance thus serves to effect a higher throughput of the device, so it represents a quantitative improvement.
- the improvement of the performance of the device can also be done in qualitative terms, namely by allowing the deposition of very small solid particles from the solid-liquid mixture, so the purity of the liquid filtrate is increased.
- sieve surfaces with a mesh size or pore size of 7 pm can be used, which represents an unusually high filter fineness, which is a correspondingly very good quality of the liquid withdrawn from the solid-liquid mixture - in many applications: Water - allows.
- This qualitative improvement of the device can be made possible by the fact that the screen surface oscillates with a particularly high intensity. For example, a particularly high vibration frequency can be used.
- the Vibration intensity in g (gravitational acceleration) are expressed.
- the vibration intensity may have values of 7 g or more, in particular 10 g or more, in particular, for example, values lying between 11 g and 13 g and with which good results have been achieved in practical experiments.
- the qualitative improvement of the device can also be effected by the fact that the solid-liquid mixture is not only vibrated by the movements of the screen surface itself, but that it is subjected to ultrasound.
- ultrasound can be directed from below against the sieve surface, so that the ultrasound acts on both the solid-liquid mixture and on the sieve surface.
- the qualitative improvement of the device causes deposits of solids in front of the pores of the screen to be avoided, so that blockage of the screen surface can be avoided despite the mentioned filter fineness down to 7 ⁇ m.
- Another aspect of the developments of the known device relates to the aspect that the exiting from the device substances are sanitized so that they can be easily stored and / or transported.
- the disposal of organic hospital waste especially if they contain human excretions, can be highly problematic from a hygienic point of view, especially if in disaster or Disease areas these excretions may contain germs that pose a health hazard. If, for example, in areas contaminated with MERS, AIDS or Ebola, such waste from hospitals or infirmaries reaches the normal sewage system - if there is any sewer system at all - and the germs contained in these wastes can later escape to the atmosphere, this will be counteracted supports the efforts of the respective hospitals or infirmaries the uncontrolled spread of dangerous germs.
- this problem relates to regions in which there is typically no sewerage or clarification facilities for the disposal of organic waste, and relates to areas in which, for example, due to natural disasters, facilities such as sewers or clarifiers have been destroyed or rendered unusable, and this problem is concerned
- provisional settlements that are to be used only temporarily for a certain period of time, such as refugee camps, or settlements with shelters in disaster areas.
- this problem also affects hospitals in the so-called civilized or highly developed areas, where the problem of multidrug-resistant bacteria exists. Also, such germs should not enter the environment uncontrolled as possible.
- the organic wastes which are obtained as a solid-liquid mixture, can be separated and sanitized. While the sanitized liquid filtrate, for example, used for irrigation or can be easily discharged into the sewer, the solids can be placed in a closed incinerator. Not only by the thermal utilization of the solids, the energy contained therein can be used, but by the combustion and harmful germs, which may be contained in the solids are reliably rendered harmless.
- the sanitation can be carried out, for example, by irradiating the solid-liquid mixture and / or the liquid filtrate with UV light. Also, the solids can be irradiated with UV light, but there is the problem that this can only be a complementary measure, because probably the solids can not be completely penetrated by the UV radiation and sanitized accordingly.
- the sanitation can be effected alternatively or in addition to a UV irradiation in that the solid-liquid mixture and / or the liquid filtrate and / or the deposited solid is heated by means of microwaves to a sanitation temperature, for example, above 70 ° C or 80 ° C can lie.
- the device may advantageously be provided with a post-treatment unit for the solid precipitated from the device.
- This post-treatment unit can be designed, for example, as a packaging device.
- the solid can be pressed into bales, which are then mechanically wrapped with foil and wrapped airtight in this way.
- the Bales can be designed, for example, in a manner known per se as round bales, or advantageously cuboid shaped, so that they can be stacked to save space.
- the solid may be filled into a film tube, one end of which is closed, which is clamped and sealed after filling a desired length of tubing, and optionally cut from a considerably longer, yet unfilled tube, such that, as in the sausage production, tubing sections are created, which are closed at both ends and contain the solid.
- Hose sections then enable the safe storage or safe transport of the packaged solid so that it can be transported to the mentioned incinerator, for example. If the solid has a high - and possibly also because of its contained hazardous substances or germs - the thermal utilization in a closed incineration plant can be energetically advantageous while ensuring at the same time that organic ingredients of the solid are rendered harmless.
- Such closed combustion plants in contrast to an open field fire) are typically equipped with powerful filters, so that even beyond the thermal effect of any remaining inorganic harmful particles can be made harmless and can not get into the environment.
- sanitizing material may be added to the solid flowing through the funnel by means of a tubing adjoining the funnel.
- the moisture-absorbing material which influences the mechanical properties of the solid in order to be able to better press it, for example in the downstream aftertreatment unit, or to improve the dimensional stability of the compressed solid, for example the mentioned bales. to enable.
- a plurality of pipe connections is provided at the end of the device where the screen surface is located lowest, ie at the so-called inlet end, in the region of which the inlet openings are located.
- a lateral pipe is provided in the region of this inlet end, which opens into the housing above the screen surface.
- the solids may either be packaged airtight, as discussed above, or they may be pressed at least so strong as to form a plug that seals the space enclosed by the housing and the funnel:
- a press screw may connect to the hopper as a post-processing device.
- the mentioned closed-walled pipeline can be designed as a transition piece, the cross section of which transitions from a rectangular to a circular contour, so that the press screw can connect to it with a circular, rohi-shaped housing.
- the harmless material can escape to the outside and be deposited, for example, on the loading area of a vehicle or in the loading space of a vehicle, or on the spot as a pile.
- an airtight wrapping of the solid can by means of the mentioned, formed by the press screw plug, that in a subsequent portioning of the solids, for example to produce the aforementioned bales or to fill a film tube, no air entry from the outside into the region of the device is possible, in which a negative pressure should be maintained.
- FIG. 2 shows a view into a housing of the device of FIG. 1 together with a vibrating screen
- Fig. 3 is a perspective view into an open screw press of the apparatus of Fig. 1;
- Fig. 4 is a view from another perspective on the
- FIG. 5 is a sectional cross-sectional view of the embodiment of FIG. 1 in the region of a stepped screen surface of a vibrating screen and a Druckaus- equal between the space below the vibrating screen and the space above the vibrating screen, and the detail A increases.
- 1 denotes a device as a whole, which serves for separating solid and liquid components of a solid-liquid mixture, in particular manure.
- the device 1 has two combined to form a common assembly housing 2, in each of which a relative to the horizontal obliquely arranged vibrating screen 3 is arranged.
- a vibration drive 5 is mounted on the top of this assembly, so the two housing 2, a vibration drive 5 is mounted.
- the device 1 is designed as a mobile device in the form of a truck trailer, with a frame 6, wheels 7 and a drawbar 8, which can be connected by means of a trailer hitch to a towing vehicle.
- a towing vehicle about vibration damper in the form of elastomeric bearings 40, the housing 2 are decoupled from the frame 6 vibrationally.
- This mobile device 1 is shown in Fig. 1 in front of a slurry tank 9.
- a corrugated tube 10 leads manure as a solid-liquid mixture from the manure tank 9 to the device 1, namely to a pump provided there 11. From the pump 11th from the solid-liquid mixture passes through a pipe 12 to the two housings 2, wherein the pipe 12 is branched and leads to two inlets 14, each of which opens into one of the housing 2.
- the liquid components which pass through the vibrating screens 3 pass through outlets 15 from the housings 2.
- outlets 15 are provided on the underside of each housing 2.
- the processes 15 open into a manifold 16, which is designed as a transverse square tube. From the collection tube 16, the liquid components are passed through a suction line 17 to a suction pump 18. From the suction pump 18 they pass through a return line 19, which is designed as a tube, back into the slurry tank. 9
- the vibrating screens 3, and in the illustrated embodiment, the two housing 2 are arranged obliquely relative to the horizontal. 1, from left to right, so that the right end of a vibrating screen 3 is arranged higher than the left, lower end of the vibrating screen 3.
- the level of solid-liquid mixture within a housing 2 is set during operation of the device 1 so that the vibrating screen 3 protrudes with its front in the conveying direction, right end of the solid-liquid mixture upwards.
- the solid components arrive on the vibrating screen 3 at the right end of the Housing 2 and arrive there through a discharge opening in a hopper 20, which tapers towards the bottom.
- a hopper 20 which tapers towards the bottom.
- the solid components are conveyed away by means of a screw conveyor 22.
- the screw conveyor 22 Due to the maximum permissible length that the device 1 may have as a vehicle trailer, the screw conveyor 22 is designed divisible and the end shown in Fig. 1 right represents a connection area.
- An extension piece 23 of the screw conveyor 22 can from there the screw conveyor 22 on the extend the illustrated right end to a greater length and to a greater height.
- a foldable or foldable configuration of the screw conveyor 22 is provided, wherein the extension piece 23 is always hingedly connected to an upright axis hingedly connected to the fixed part of the screw conveyor 22 and can be pivoted from its illustrated folding position into an extension position in which it extends this fixed part of the screw conveyor 22 rectilinear.
- FIG. 2 shows a view into the right and front housing 2 of the device 1 of Fig. 1, in which the end wall 4 is removed.
- the pipeline 12 extends in the region of the inlet 14 into the housing 2.
- a guide sleeve 24 is provided, through which the pipe 12 extends, so that in this way the pipe 12 is decoupled from the housing 2 in terms of vibration and can remain relatively rigid, while the housing 2 together with the vibrating screen 3 through the Vibration drive 5 is vibrated.
- An air access into the housing 2 is firstly possibly possible through an annular gap, which results between the guide piece 24 and the thinner pipe 2 there, if this annular gap should not be sealed, but this can be advantageously provided in a conventional manner.
- an air inlet in the region of the discharge opening is possible, namely where the hopper 20 connects to the housing 2.
- the housing 2 is closed. The mentioned admission of air occurs due to the suction effect of the suction pump 18, which generates a negative pressure in the housing 2.
- An overflow edge 38 is provided in the conveying direction at the front of the vibrating screen 3, in front of the discharge opening, so that the solid components accumulate on the vibrating screen 3 and have to reach a corresponding height or layer thickness before they overflow the overflow edge 38 and into the discharge opening. long can
- a manifold 25 is provided, which is designed as a flat sheet, which extends substantially transversely below the inlet 14 and which has a plurality of distribution ribs 26, which passes through the inlet 14 into the housing 2 solid-liquid mixture distribute over the entire width of the vibrating screen 3.
- FIG. 2 While in the case 2 the front wall 4 facing the viewer is removed and exposes the vibrating screen 3 and the distributor 25, an end wall 39 can be seen from FIG. 2, which lies opposite the remote end wall 4, and which in FIG Comparison to the end wall 4 lying flat and above the funnel 20 is arranged.
- the collecting space 21 may be configured: From the hopper 20 enter the solid components of the solid-liquid mixture from the housing 2 into the plenum 21.
- the plenum 21 is open as down Housing designed in which a screw press 27 runs. Also in this case, the actual screw, namely the pressing screw, not visible, but rather a filter 28 can be seen.
- Fig. 4 shows schematically the structure of the screw press 27.
- the filter 28 is formed by a plurality of flat iron 35, which extends in the longitudinal direction of the Extend screw press 27 and which are each combined into packages 29.
- Each package 29 in this case has a plurality of upright flat iron 35, for example, between two and ten pieces, purely by way of example in the illustrated embodiment, four flat bars 35 form a packet 29.
- the packages 29 are arranged to abut each other with their radially inner longitudinal edges, while between two adjacent packages 29 at the radially outer periphery of the filter 28 in each case a gap extends in the longitudinal direction of the screw press 27, since the flat bars 35 within a package 29 parallel and each other arranged over the entire surface.
- Spacers 36 are provided between the individual packages 29.
- the packages 29 surround a press screw 37 similar to a longitudinally slotted cladding tube.
- the filter 28 abuts almost the outer periphery of a press screw.
- a small gap is provided between the filter 28 and the press screw 37 to allow low-wear operation of the screw press 27.
- a significantly larger gap between the filter 28 and the press screw 37 may be provided, if this should be advantageous for the treatment of the respective material to be processed.
- the plug 30 When the screw press 27 is put into operation, the plug 30 first abuts the cladding tube 34 and closes it.
- the pressing pressure which builds up inside the screw press 27 by the rotation of the press screw 37, moisture is expelled from the solid components and pressed through the filter 28.
- the compressed solid components Upon reaching a sufficiently high compression pressure, the compressed solid components can push the plug 30 against the action of the compression spring 33 from the cladding tube 34 so that now the separated material, namely the solid components, emerge from the annular gap between the plug 30 and the sheath 34 and can fall down. There they are detected by the screw conveyor 22.
- the plenum 21 can be design as a container, ie as an empty space without a screw press 27 mounted therein.
- the screw press 27 can be operated in this case as a separate device, for example, only if necessary, if the first By means of the vibrating screen 3 separated solid components should have an even higher solids or dry content.
- the material is conveyed by the screw conveyor 22 from the collecting space 21 to the screw press 27 become.
- a post-treatment of the coming of the vibrating screen 3 solid components by means of the screw press 27 can be done or omitted.
- FIG. 5 is closer in a cross-sectional view of the vibrating screen 3 shown in training with two Schwingsieb Suiteen 3.1 and 3.2, which are formed stepped, so that between the Schwingsieb Suiteen 3.1 and 3.2, a breaking edge 3.3 results and the surface of Schwingsieb Suitees 3.2 extends with a height distance to the surface of Schwingsieb Suitees 3.1 and lower overall.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202015103333 | 2015-06-24 | ||
PCT/EP2015/002227 WO2016206705A1 (en) | 2015-06-24 | 2015-11-05 | Method and device for separating solid and liquid components of a solid-liquid mixture |
Publications (1)
Publication Number | Publication Date |
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EP3313546A1 true EP3313546A1 (en) | 2018-05-02 |
Family
ID=54780243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15804313.3A Withdrawn EP3313546A1 (en) | 2015-06-24 | 2015-11-05 | Method and device for separating solid and liquid components of a solid-liquid mixture |
Country Status (2)
Country | Link |
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EP (1) | EP3313546A1 (en) |
WO (1) | WO2016206705A1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8417232U1 (en) * | 1984-06-06 | 1984-09-13 | Faudi Feinbau Gmbh, 6370 Oberursel | VACUUM BAND FILTER |
US8613360B2 (en) * | 2006-09-29 | 2013-12-24 | M-I L.L.C. | Shaker and degasser combination |
CA2912419A1 (en) * | 2013-03-30 | 2014-10-09 | Daniel Pomerleau | Improvements in vacuum shaker systems |
DE202014102981U1 (en) * | 2014-03-31 | 2014-08-22 | Alfons Schulze Isfort | Device for separating solid and liquid fractions of a solid-liquid mixture |
-
2015
- 2015-11-05 EP EP15804313.3A patent/EP3313546A1/en not_active Withdrawn
- 2015-11-05 WO PCT/EP2015/002227 patent/WO2016206705A1/en active Application Filing
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WO2016206705A1 (en) | 2016-12-29 |
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