Device for cleaning and / or sucking pile fibers for pile fabric filtration

Abstract

The present invention relates to an apparatus for cleaning and / or sucking pile fibers for pile fabric filtration, which can be fluidly connected to a suction source and includes at least one suction slot. In order to provide an improved suction device for pile fabric filtration, as part of the present invention, it is proposed to provide the apparatus for cleaning and / or sucking with structured means for mechanically cleaning, restoring, and profiling the pile fibers. In known suction devices, the suction lip is configured to be smooth, while the suction device according to the present invention includes structured means for improving the cleaning effect and realigning the pile fibers to restore the pile fiber layer.

Description

Technical Field

[0001] The present invention relates to an apparatus for cleaning and / or sucking pile fibers for pile fabric filtration (Polstofffiltration), which can be fluidly connected to a suction source and includes at least one suction slot.

[0002] In this context, the fluid connection to the suction source may be both a liquid connection and a gas connection, in particular an air connection, or a combination of a liquid connection and a gas connection, with the first option being preferred.

[0003] The present invention generally relates to an apparatus for water and wastewater treatment and / or gas / vapor treatment. In particular, the present invention relates to stationary filtration using a cloth medium having a cloth medium carrier structure, which forms a discharge space for discharging the filtered inflow (cloth filtration).

Background Art

[0004] There are numerous filter systems using fabrics for water and wastewater treatment. However, these systems have a rotating frame carrying the filter medium and / or require a separate discharge duct for discharging the wastewater. Known disk filtration systems, such as the system in U.S. Patent No. 4,639,315, generally have a tank including an inlet and an outlet, and a rotatable filter frame assembly disposed between the inlet and the outlet. The fabric filter medium is pulled by a rotatable support structure, such as a disk-shaped frame portion connected to a pipe. During filtration, the inflow enters the tank and is discharged from the tank outlet through the fabric filter medium, the hollow disk frame portion, and the central discharge pipe. Fabric filter media as seen in U.S. Patent No. 5,374,360, U.S. Patent No. 5,876,612, and U.S. Patent No. 6,090,298 are periodically cleaned in various ways, such as by backflush and / or high-pressure spray, while the disk is rotating.

[0005] Another filter system known from U.S. Patent No. 4,090,965 A is generally referred to as drum filtration. In a drum filtration system, the fabric filter medium is pulled by a support frame that forms a large drum shape as opposed to a disk. A plurality of drums are fixed to a central pipe structure and together form a rotatable filter frame assembly. During filtration, the influent flows into a tank, passes through the fabric filter medium, and the suspended solids are deposited on the fabric. The filtered influent flows through the central pipe of the filter frame and is discharged through the tank outlet. Similar to disk filtration, the fabric filter medium is periodically cleaned during rotation, for example, by backwashing.

[0006] In pile fabric filtration, the multi-dimensional filter medium consists of a carrier fabric that does not function as a filter and a pile (so-called pile fiber layer) made of pile yarns that provides a large surface area. A suction device is periodically used to wash the residual solids from the pile fabric and maintain the filter capacity. This is because as the deposition of solids on the filter cloth increases, the hydraulic resistance of the filter system increases.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

Patent Document 2

Patent Document 3

Patent Document 4

Patent Document 5

Summary of the Invention

Means for Solving the Problems

[0008] The problem addressed by the present invention is to provide an improved cleaning device for pile fabric filtration.

[0009] In the context of the present invention, this problem is solved by a device according to the preamble, in which means structured on or as a separate element to the device for cleaning and / or suctioning for mechanically cleaning (Reinigen), restoring (Wiederherstellen), and / or profiling (Profilieren) the pile fibers are provided, and the pile fibers are alignable by means structured to correspond to the original state of the pile fiber layer.

[0010] Known devices for cleaning and / or suctioning are configured to be substantially smooth, whereas the device for cleaning and / or suctioning according to the present invention includes structured means for improving the cleaning effect and for realigning and cleaning the pile fibers to restore the pile fiber layer, i.e., means protruding from the surface of the suction lip. The structured means form protrusions and / or recesses in the device for cleaning and / or suctioning, thereby improving the cleaning effect and the restoration of the pile fiber layer, i.e., the alignment of the pile fibers, to correspond to the original state of the pile fiber layer. This alignment / structuring / shaping of the pile fibers improves the filtration process. Alternatively, the structured means for mechanically cleaning, restoring, and profiling the pile fibers may be configured as a separate element from the device for cleaning and / or suctioning. In this case, the structured means for mechanically cleaning, restoring, and profiling the pile fibers can move independently of the device for cleaning and / or suctioning.

[0011] According to a preferred configuration of the present invention, it is proposed that the structured means for mechanically cleaning, restoring, and / or profiling the pile fibers be arranged within the region of the suction lip of the device for cleaning and / or suctioning.

[0012] The suction lip is usually located in the vicinity of the suction slot. There may be one suction lip, but usually two or, in some cases, more than two suction lips are arranged around the suction slot.

[0013] Accordingly, the suction lip includes structured means for mechanically cleaning, restoring, and profiling the pile fibers, and this structured means is before and / or after and / or during the fluidization of the pile fiber layer, (a) mechanically cleaning the pile fibers, i.e., removing residues on and / or on the surface of the pile fibers that are not removed or are only insufficiently removed by conventional suction of the pile fiber layer, (b) parallelizing or structuring the pile fibers to restore the pile fiber layer with respect to the optimal filtering effect, (c) decompressing or compressing the pile fiber layer, Accordingly, by preventing the pile fibers from tangling, the filter capacity of the pile fiber layer can be maintained. The suction lip may be provided with structured means for mechanically cleaning, restoring, and profiling the pile fiber layer as a whole or in part. The structured means for mechanically cleaning, restoring, and / or profiling the pile fibers in this area may also be arranged wholly or partly within the suction slot.

[0014] The structured means for mechanically cleaning, restoring, and / or profiling the pile fibers can be used for targeted cleaning, without simultaneous suction and in combination with the suction of the pile fibers, to reduce / minimize spikes on the filtrate side by cleaning the pile yarn / pile fabric and / or removing separate filter cakes within and / or above the pile fiber layer.

[0015] The upstream and / or downstream and / or integral insertion of structured means for mechanically cleaning, restoring, and / or profiling the pile fibers can assist in removing dirt and / or provide a defined distance between the pile fiber layer and the suction section. This distance helps to remove the top layer formed on the pile fiber layer and thus increases the solids content in the waste wash water.

[0016] According to the present invention, it is proposed that the structured means for mechanically cleaning, restoring, and profiling the pile fibers be connected to a suction section for fluidization and cleaning, so that the structured means for mechanically cleaning, restoring, and profiling the pile fibers becomes an integral part of the device for cleaning and / or suctioning. Alternatively, the structured means for mechanically cleaning, restoring, and profiling the pile fibers may be configured as a separate element(s) connectable to the device for cleaning and / or suctioning. In this case, the structured means for mechanically cleaning, restoring, and profiling the pile fibers is movable independently of the device for cleaning and / or suctioning. The structured means for mechanically cleaning, restoring, and profiling the pile fibers can be used independently of the device for cleaning and / or suctioning. The structured means for mechanically cleaning, restoring, and profiling the pile fibers is rotatable about its x, y, and / or z axes. The structured means for mechanically cleaning, restoring, and profiling the pile fibers may be attached by a spring. In this case, it is advantageous that the contact pressure on the pile fiber layer can be variably adjusted.

[0017] The subject of the present invention is to maintain the filter performance over a longer period regardless of the pile fabric used, increase the hydraulic load and / or material load, and reduce the energy requirement without modifying the existing filter machine and / or the pile fiber layer.

[0018] This makes it possible to reduce the cost of a new or existing filtration system by reducing the size or number of the necessary filtration units.

[0019] In this case, the cross-section of the structured means for mechanically cleaning, restoring, and profiling the pile fibers does not increase towards the pile fiber layer. The cross-section of the structured means for mechanically cleaning, restoring, and profiling the pile fibers does not become larger at the end closest to the pile fiber layer than at the end farther from the pile fiber layer. The cross-section of the structured means for mechanically cleaning, restoring, and profiling the pile fibers does not increase towards the pile fiber layer. Advantageously, the structured means for mechanically cleaning, restoring, and profiling the pile fibers can also remove separate filter cakes within the pile fiber layer.

[0020] It is part of the present invention that the equivalent diameter (aequivalenter Durchmesser) of the structured means for mechanically cleaning, restoring, and profiling the pile fibers is 1 to 4000 μm, preferably 100 to 1000 μm, particularly preferably 100 to 400 μm.

[0021] Advantageously, such an equivalent diameter enables the treatment of single fibers of the pile fiber layer, and the entire pile fiber layer and / or individual layers of the pile fiber layer can be treated in a functional state.

[0022] In this case, the diameter of the pile fibers can be 0.2 to 200 μm, preferably 1 to 50 μm, particularly preferably 3 to 30 μm.

[0023] The equivalent diameter of the structured means for mechanically cleaning, restoring, and profiling the pile fibers preferably depends on the equivalent diameter of the pile fibers. For example, the ratio of the equivalent diameter of the pile fibers to the equivalent diameter of the structured means for mechanically cleaning, restoring, and profiling the pile fibers is 1:1 to 1:100, preferably 1:5 to 1:50, particularly preferably 1:25 to 1:40.

[0024] According to a preferred configuration of the present invention, the structured means for mechanically cleaning, restoring, and profiling the pile fibers is configured as fibers, pile fabrics, hairs, teeth, angled teeth, studs, or combinations thereof.

[0025] It is part of the present invention that the structured means for mechanically cleaning, restoring, and profiling the pile fibers is configured to be flexible.

[0026] Alternatively, it is also possible that the structured means for mechanically cleaning, restoring, and profiling the pile fibers has rigidity and / or is configured to be fixed.

[0027] Of course, it is also possible to provide a hybrid form in which a part of the structured means for mechanically cleaning, restoring, and profiling the pile fibers is configured to be flexible and another part of the structured means for mechanically cleaning, restoring, and profiling the pile fibers has rigidity and / or is configured to be fixed. Structured means for mechanically cleaning, restoring, and profiling the pile fibers that are rigid or fixed and movable, for example, by interposing joints or flexible regions, are also proposed.

[0028] According to the present invention, it is proposed that the structured means for mechanically cleaning, restoring, and profiling the pile fibers is oriented substantially perpendicular and / or tangentially away from the plane of the device for cleaning and / or suction, and / or is inclined with respect to that plane.

[0029] When aligning obliquely, it is also possible that the structured means for mechanically cleaning, restoring, and profiling the pile fibers is arranged to be inclined towards the pile yarns of the pile fiber layer or to be directed away (weggerichtet angeordnet) from the pile yarns.

[0030] In the present invention, it is also possible to provide a mixed form in which a part of the structured means for mechanically cleaning, restoring, and profiling the pile fibers is configured to incline towards the pile yarn, and another part of the structured means for mechanically cleaning, restoring, and profiling the pile fibers is configured to face away from the pile yarn.

[0031] According to the present invention, it is proposed that the structured means for mechanically cleaning, restoring, and profiling the pile fibers be arranged so as to be uniformly dispersed.

[0032] Alternatively, it is also possible that the structured means for mechanically cleaning, restoring, and profiling the pile fibers be non-uniformly dispersed.

[0033] For example, the structured means for mechanically cleaning, restoring, and profiling the pile fibers can be arranged in a pattern, in particular a circle, a zigzag, a line, in particular parallel lines perpendicular to the suction slots, a wavy line, or a mixed form thereof.

[0034] An embodiment of the present invention is that the structured means for mechanically cleaning, restoring, and profiling the pile fibers is made of a plastic material, such as polyethylene terephthalate, polypropylene, polyamide, and / or a metal, in particular steel, preferably stainless steel, and / or a natural material, in particular plant fibers and / or animal fibers, wood, or a combination thereof.

[0035] A preferred configuration of the present invention is that the structured means for mechanically cleaning, restoring, and profiling the pile fibers is arranged in a holder that can be detachably fixed to a device for cleaning and / or suction. In this context, it is possible both that only the structured means for mechanically cleaning, restoring, and profiling the pile fibers are arranged in the detachably fixed holder, and that, in addition to these means, suction lips (plural) are arranged in this holder.

[0036] Since the structured means for mechanically cleaning, restoring, and profiling the pile fibers wear over time due to friction between the pile yarn and the means, it is reasonable for the means to be arranged in a holder that can be detachably fixed to a device for cleaning and / or suction within the area of the suction lip. Since the suction lip also wears, in addition to the structured means for mechanically cleaning, restoring, and profiling the pile fibers, it may be advantageous to arrange the suction lip in an exchangeable holder and replace these two worn parts simultaneously.

[0037] Particularly preferably, the holder can be detachably fixed to the device for cleaning and / or suction by a snap-in connection (Rastverbindung).

[0038] Alternatively, it is also possible that the structured means for mechanically cleaning, restoring, and profiling the pile fibers cannot be detachably and / or movably fixed.

Brief Description of the Drawings

[0039] Exemplary embodiments of the present invention will be described in more detail below with reference to the drawings.

[0040]

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[0041] Figs. 1a - 1d show different configurations of structured means for mechanically cleaning, restoring, and profiling pile fibers. These may be configured as bristles (Fig. 1a), teeth (Fig. 1b), angular teeth (Fig. 1c), or studs (Fig. 1d). The structured means for mechanically cleaning, restoring, and profiling pile fibers may be rigid or configured to be fixed, and hybrid forms are also possible.

[0042] The structured means for mechanically cleaning, restoring, and profiling pile fibers consists of a plastic material, such as polyethylene terephthalate, polypropylene, polyamide, and / or a metal, such as steel, especially stainless steel, and / or a natural material, such as plant fibers and / or animal fibers, wood, or a combination thereof.

[0043] Figs. 2a - 2g show different arrangements and profiles of structured means for mechanically cleaning, restoring, and profiling pile fibers. These can be not only uniformly distributed across the entire suction lip, but also non-uniformly distributed, present only on a part of the suction lip, or perpendicular to the suction lip. These may be arranged to slope towards the pile yarn or away from the pile yarn, and may be provided in hybrid forms.

[0044] In particular, the structured means for mechanically cleaning, restoring, and profiling the pile fibers may be arranged in patterns, for example, circular (Figure 2a), square-wave (Figure 2b), or wavy or wavy-line (Figure 2c). The structured means for mechanical cleaning may be arranged in a zigzag shape, and the cross-section of the zigzag may be trapezoidal (Figure 2d) or triangular (Figure 2e). It is also possible to arrange in other patterns, such as parallel rows (Figures 2s and 2t). All of these patterns may be in a mixed form, that is, different patterns may be provided in combination with each other.

[0045] Figures 2h to 2q are side views of the profile of the structured means for mechanically cleaning, restoring, and profiling the pile fibers as seen from the moving direction of the suction device. The structured means for mechanically cleaning, restoring, and profiling the pile fibers are arranged in different lengths within each of the illustrated surface areas accordingly. For example, in Figure 2q, the length of the pile fibers is shorter in the center than on both sides.

[0046] Figures 2r to 2y show the arrangement patterns of the structured means for mechanically cleaning, restoring, and profiling the pile fibers as seen from below the suction device or the structured means for mechanically cleaning, restoring, and profiling the pile fibers. The structured means for mechanically cleaning, restoring, and profiling the pile fibers are arranged within each of the illustrated surface areas accordingly.

[0047] Figures 3a to 3n show different arrangements of the structured means for mechanical cleaning on the suction device.

[0048] In Figure 3a, the moving direction of the suction device is indicated by an arrow. This suction direction also applies to Figures 3b to 3d. The moving direction can also be reversed.

[0049] Figures 3e to 3k show further arrangements of the structured means for mechanical cleaning on the suction device.

[0050] Figures 3l to 3n show different arrangements of structured means for mechanical cleaning that are spatially separated from the suction device. In this case, the structured means for mechanical cleaning can move independently of the suction device.

[0051] In Figures 3g to 3j, the structured means for mechanical cleaning are arranged within the suction slots.

[0052] Figures 3e to 3n indicate the moving directions of the suction device and / or the structured means for mechanical cleaning with arrows. The moving directions can also be reversed. The flow direction of the fluid in the suction process during filter cleaning is indicated by double arrows.

[0053] Figure 3c shows a suction device including upstream bristles and downstream bristles. The upstream bristles loosen dirt from the pile fibers, and this dirt is sucked up by the suction device, while the downstream bristles restore the pile fiber layer.

Claims

1. An apparatus for cleaning and / or sucking pile fibers for pile fabric filtration, which is fluidly connectable to a suction source and includes at least one suction slot, wherein means for mechanically cleaning, restoring, and profiling the pile fibers are provided on the apparatus for cleaning and / or sucking or structured as a separate element therefrom, and the pile fibers are alignable by the structured means so as to correspond to the original state of the pile fiber layer.

2. The structured means for mechanically cleaning, restoring, and profiling the pile fibers has an equivalent diameter of 1 to 4000 μm, preferably 100 to 1000 μm, particularly preferably 100 to 400 μm, according to the apparatus of claim 1.

3. The means for mechanically cleaning, restoring, and profiling the pile fibers is arranged within the region of the suction lip of the apparatus for cleaning and / or sucking, according to the apparatus of claim 1 or 2.

4. The structured means for mechanically cleaning, restoring, and profiling the pile fibers is configured as fibers, pile fabric, hairs, teeth, angular teeth, studs, or a combination thereof, according to the apparatus of any one of claims 1 to 3.

5. The structured means for mechanically cleaning, restoring, and profiling the pile fibers is configured to be flexible, according to the apparatus of any one of claims 1 to 4.

6. The structured means for mechanically cleaning, restoring, and profiling the pile fibers is configured to be rigid and / or fixed, according to the apparatus of any one of claims 1 to 4.

7. The structured means for mechanically cleaning, restoring, and profiling the pile fibers is configured to extend vertically and / or tangentially away from or be inclined with respect to the plane of the apparatus for cleaning and / or sucking, according to the apparatus of any one of claims 1 to 6.

8. The structured means for mechanically cleaning, restoring, and profiling the pile fibers are arranged to be inclined towards the pile yarns of the pile fiber layer or to face away from the pile yarns, the device according to any one of claims 1 to 7, characterized in that.

9. The structured means for mechanically cleaning, restoring, and profiling the pile fibers are arranged to be uniformly dispersed, the device according to any one of claims 1 to 8, characterized in that.

10. The structured means for mechanically cleaning, restoring, and profiling the pile fibers are non-uniformly dispersed, the device according to any one of claims 1 to 9, characterized in that.

11. The structured means for mechanically cleaning, restoring, and profiling the pile fibers are made of a plastic material, such as polyethylene terephthalate, polypropylene, polyamide, and / or a metal, particularly steel, preferably stainless steel, and / or a natural material, particularly plant fibers and / or animal fibers, wood, or a combination thereof, the device according to any one of claims 1 to 10, characterized in that.

12. The structured means for mechanically cleaning, restoring, and profiling the pile fibers are arranged in a holder that can be detachably fixed to the device for cleaning and suctioning, the device according to any one of claims 1 to 11, characterized in that.

13. The holder can be detachably fixed to the device for cleaning and suctioning by a snap-in connection, the device according to claim 12, characterized in that.

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