Device for cleaning and / or suction of pill fibers for the filtering of a pill fabric

Abstract

The invention relates to a device for cleaning and / or sucking pile fibres for filtering pile fabrics, said device being fluidically connectable to a suction source and having at least one suction gap. In order to achieve an improved suction device for the filtration of pile fabrics, the invention proposes that the device for cleaning and / or suction is provided with a structural member for the mechanical cleaning, recovery and / or shaping of the pile fibres. In known suction devices, the suction lips are designed to be smooth, whereas the suction device according to the invention has a structured component which increases the cleaning effect and at the same time redirects the pile fibres and thereby restores the pile fibre layer.

Description

Technical Field

[0001] The invention relates to a device for cleaning and / or suctioning pile fibers for pile fabric filtration, which can be fluidically connected to a suction source and has at least one suction gap.

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

[0003] The present invention generally relates to devices for water and wastewater treatment and / or gas / steam treatment. In particular, the present invention relates to steady-state filtration using a fabric media having a fabric media carrier structure that forms an outlet chamber for conducting a filtered inlet flow (fabric filtration). Background Art

[0004] For water and wastewater treatment, there are a variety of filtration systems using fabrics. However, these systems have a rotating frame that carries the filter medium and / or require a separate discharge channel for exporting wastewater. Known disc filter systems, such as the filter system in US4,639,315 A, usually have a tank with an inlet and an outlet and a rotatable filter frame assembly arranged between the inlet and the outlet. The filter medium made of fabric is tensioned on a disc-shaped frame section, and the frame section is connected to a rotatable support structure, such as a pipe. During filtration, the inlet flow flows into the tank and flows through the fabric filter medium, through the hollow disc frame section and into the central discharge pipe, so as to be emptied through the tank outlet. As in US 5,374,360A, US 5,876,612A and US 6,090,298 A, the fabric filter medium is cleaned at regular intervals by different methods, such as by backwashing and / or high-pressure jetting during the rotation of the disc.

[0005] Another filter system, as known from US 4,090,965 A, is generally referred to as drum filtration. In a drum filtration system, a filter medium made of cloth is tensioned on a support frame, which, unlike a disc structure, is formed in the shape of a large rotating drum. Each drum is fixed to a central tube structure and together forms a rotatable filter frame assembly. During filtration, the inlet flow flows into the tank and passes through the fabric filter medium, whereupon suspended solids are deposited on the fabric. The filtered inlet flow flows through the central tube structure of the filter frame and is discharged through the tank outlet. As in disc filtration, the fabric filter medium is regularly cleaned during rotation by backwashing or the like.

[0006] In the case of fleece filtration, the multi-dimensional filter medium consists of a non-filtering carrier fabric and a pile of fleece yarns, the so-called fleece fiber layer, which forms a large surface. Suction is used cyclically to remove trapped solids from the fleece and to maintain the filter capacity. This means that the hydraulic resistance of the filter system increases as the amount of solid deposits in the filter fabric increases. Summary of the invention

[0007] The object of the invention is to provide an improved cleaning device for fleece filtration.

[0008] Within the scope of the present invention, in a device according to the preamble, the object is achieved in that a structured component for mechanically cleaning, restoring and / or shaping the pile fibers is provided on the device for cleaning and / or suction or as an element separate from the device for cleaning and / or suction, by means of which the pile fibers can be oriented in a manner corresponding to the original state of the pile fiber layer.

[0009] The known device for cleaning and / or suction is basically configured to be smooth, and the device for cleaning and / or suction according to the present invention has a structured component, i.e., a component extending from the surface of the suction lip, which improves the cleaning effect and simultaneously redirects, cleans and restores the pile fiber layer. The structured component constitutes the projection and / or recess on the device for cleaning and / or suction, and improves the cleaning effect and the recovery degree of the pile fiber layer, that is, the pile fiber is oriented in a manner corresponding to the original state of the pile fiber layer. This orientation / structuring / molding of the pile fiber improves the filtering process. Alternatively, the structured component for mechanically cleaning, restoring and molding the pile fiber can also be designed to be separated from the device for cleaning and / or suction. At this time, the structured component for mechanically cleaning, restoring and molding the pile fiber can be moved independently of the device for cleaning and / or suction.

[0010] According to a preferred design of the present invention, it is provided that the structural member for mechanically cleaning, restoring and shaping the pile fibers is arranged in the region of a suction lip of the device for cleaning and / or suctioning.

[0011] The suction lip is usually located around the suction slit. There can be one suction lip, but usually at least two suction lips are arranged around the suction slit or in some cases more than two suction lips are also arranged.

[0012] The suction lip thus has a structural element for mechanically cleaning, restoring and shaping the pile fibers, which can be formed before and / or after and / or during the fluidization of the pile fiber layer.

[0013] (a) mechanical cleaning of the pile fibers, i.e. removal of the pile fibers and / or of residues on the surface of the pile fibers which are not or only inadequately removed by conventional suction of the pile fiber layer,

[0014] (b) parallelizing or structuring the pile fibers in order to restore the pile fiber layer with respect to its optimal filtering effect,

[0015] (c) decompressing or compressing the pile fiber layer,

[0016] The filtration performance of the pile fiber layer is thereby maintained by preventing the pile fibers from becoming entangled. The suction lip can be provided completely or in a partial area with the structural component for mechanically cleaning, restoring and shaping the pile fibers. The structural component for mechanically cleaning, restoring and shaping the pile fibers in the region can also be provided completely or in a partial area within the suction gap.

[0017] The structural components for mechanically cleaning, restoring and shaping the pile fibers can be used for targeted cleaning both without simultaneous suction and in combination with suction of the pile fibers so as to reduce / minimize filtrate-side spikes resulting from cleaning of the pile yarn / pile fabric and / or removal of a distinct filter cake within and / or above the pile fiber layer.

[0018] The use of structural elements for mechanical cleaning, restoration and shaping of the pile fibers upstream and / or downstream and / or built-in can help remove dirt and / or can establish a defined distance between the pile fiber layer and the suction unit. This distance helps remove a coating that forms on the pile fiber layer and thus increases the solid content in the flushing wastewater.

[0019] According to the present invention, the structural member for mechanically cleaning, recovering and shaping the pile fibers is associated with the suction for realizing fluidization and cleaning, so that the structural member for mechanically cleaning, recovering and shaping the pile fibers is an integral part of the cleaning and / or suction device. Alternatively, the structural member for mechanically cleaning, recovering and shaping the pile fibers can also be designed as a separate element that can be connected with the device for cleaning and / or suction. At this time, the structural member for mechanically cleaning, recovering and shaping the pile fibers can be moved independently of the device for cleaning and / or suction. The structural member for mechanically cleaning, recovering and shaping the pile fibers can be used independently of the device for cleaning and / or suction. The structural member for mechanically cleaning, recovering and shaping the pile fibers can rotate around its x, y and / or z axis. The structural member for mechanically cleaning, recovering and shaping the pile fibers can be spring-supported. Advantageously, at this time, the pressing force acting on the pile fiber layer can be variably adjusted.

[0020] The subject matter of the invention makes it possible, independently of the fleece fabric used and without modifying the existing filter and / or fleece fiber layer, to maintain the filter performance over a longer period of time, to increase the hydraulic and / or material load and to reduce the energy requirement.

[0021] Thereby, the cost of new or existing filtration equipment may be reduced by reducing the size or number of filtration units required.

[0022] Here, the cross section of the structural element for mechanical cleaning, restoring and shaping of pile fibers does not increase in the direction of the pile fiber layer. The cross section of the structural element for mechanical cleaning, restoring and shaping of pile fibers at the end facing the pile fiber layer is not larger than the cross section at the end facing away from the pile fiber layer. The cross section of the structural element for mechanical cleaning, restoring and shaping of pile fibers does not increase in the direction of the pile fiber layer. The structural element for mechanical cleaning, restoring and shaping of pile fibers can advantageously also remove a noticeable filter cake inside the pile fiber layer.

[0023] It is in accordance with the invention that the structural element for mechanically cleaning, restoring and shaping pile fibers has an equivalent diameter of 1 to 4000 μm, preferably 100 to 1000 μm, particularly preferably 100 to 400 μm.

[0024] This equivalent diameter advantageously allows individual fiber treatment of the pile fiber layer, whereby treatment can be carried out on the entire pile fiber layer and / or on individual layers of the pile fiber stack in the functional (operating) state.

[0025] The pile fibers here can have a diameter of 0.2 to 200 μm, preferably 1 to 50 μm, particularly preferably 3 to 30 μm.

[0026] The equivalent diameter of the structural member for mechanically cleaning, restoring and shaping 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 structural member for mechanically cleaning, restoring and shaping pile fibers can be 1:1 to 1:100, preferably 1:5 to 1:50, particularly preferably 1:25 to 1:40.

[0027] According to a preferred design of the present invention, the structural member for mechanically cleaning, restoring and shaping pile fibers is designed as fibers, pile fabrics, bristles, teeth, angled teeth, granules or a combination of the above members.

[0028] It is within the scope of the invention that the structural element for mechanical cleaning, restoration and shaping of pile fibers is designed to be flexible.

[0029] Alternatively, the structural member for mechanical cleaning, restoration and shaping of the pile fibers is rigid and / or fixed. Of course, a hybrid form can also be provided, in which a part of the structural member for mechanical cleaning, restoration and shaping of the pile fibers is flexible and another part of the structural member for mechanical cleaning, restoration and shaping of the pile fibers is rigid and / or fixed. It is also possible to provide a rigid or fixed structural member for mechanical cleaning, restoration and shaping of the pile fibers, which is movable, for example, by means of an intermediate hinge or a flexible area.

[0030] According to the invention, it is provided that the structural element for mechanical cleaning, restoration and shaping of pile fibers is oriented vertically and / or tangentially away from the plane of the device for cleaning and / or suctioning and / or is designed to be inclined relative to the plane.

[0031] In the case of an oblique orientation, the structural element for mechanical cleaning, restoration and shaping of the pile fibers can be arranged obliquely toward the pile yarns of the pile fiber layer or oriented away from the pile yarns.

[0032] A hybrid form can also be provided here, in which a portion of the structuring elements for mechanically cleaning, restoring and shaping the pile fibers is formed obliquely toward the pile yarns, while another portion of the structuring elements for mechanically cleaning, restoring and shaping the pile fibers is oriented away from the pile yarns.

[0033] According to the invention, it is provided that the structuring elements for mechanically cleaning, restoring and shaping the pile fibers are arranged in a uniformly distributed manner.

[0034] Alternatively, the structural elements for mechanical cleaning, restoration and shaping of the pile fibers can also be distributed unevenly.

[0035] For example, the structural elements for mechanically cleaning, restoring and shaping pile fibers can be arranged in a pattern, especially in a circular, zigzag, linear shape, especially parallel lines perpendicular to the suction slits, serpentine lines or a mixture of the above patterns.

[0036] An improvement of the invention is that the structural component for mechanically cleaning, restoring and shaping pile fibers consists of plastic, such as, for example, polyethylene terephthalate, polypropylene, polyamide, and / or of metal, in particular steel, preferably stainless steel, and / or of natural materials, in particular plant and / or animal fibers, wood or a combination thereof.

[0037] A preferred design of the present invention is that the structural member for mechanically cleaning, restoring and shaping pile fibers is arranged on a support, and the support can be detachably fixed to the device for cleaning and suction. In this case, the structural member for mechanically cleaning, restoring and shaping pile fibers can be arranged on the detachably fixed support alone, or the suction lip or each suction lip can be arranged on the support in addition to the member.

[0038] Due to the friction between the pile fibers and the structural component for mechanical cleaning, restoration and shaping of the pile fibers, the structural component wears over time, so it is reasonable to arrange the structural component on a support that can be removably fixed to the device for cleaning and / or suction in the area of ​​the suction lip or the suction lips. Since the suction lips also wear, it is advantageous to arrange the suction lips on a replaceable support in addition to the structural component for mechanical cleaning, restoration and shaping of the pile fibers, so that both wearing parts can be replaced at the same time.

[0039] Particularly preferably, the holder can be detachably fastened to the cleaning and vacuuming device by means of a latching connection.

[0040] Alternatively, the structural element for mechanical cleaning, restoration and shaping of pile fibers can also be fixed in a non-detachable and / or non-movable manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0042] in:

[0043] Figures 1a to 1d Different designs of the structural element for mechanically cleaning, restoring and shaping pile fibers are shown.

[0044] Figures 2a to 2y Different arrangements and contours of the structural elements for mechanical cleaning, restoration and shaping of pile fibers are shown,

[0045] Figures 3a to 3n Different arrangements of the structural component for mechanical cleaning on or in combination with a suction device are shown. DETAILED DESCRIPTION

[0046] Figures 1a to 1d Different designs of the structural component for mechanically cleaning, restoring and shaping pile fibers are shown. The component can be configured as a bristle ( Figure 1a ),tooth( Figure 1b ), angular teeth ( Figure 1c ) or granulation ( Figure 1d ). The structural member for mechanically cleaning, restoring and shaping pile fibers can be constructed to be flexible or rigid, and here, a hybrid form can also be used.

[0047] The structural component for mechanical cleaning, restoration and shaping of pile fibers consists of plastic, such as, for example, polyethylene terephthalate, polypropylene, polyamide, and / or of metal, such as, for example, steel, in particular stainless steel, and / or of natural materials, such as, for example, plant and / or animal fibers, wood or of a combination of these materials.

[0048] Figures 2a to 2g Different arrangements and profiles of the structural element for mechanically cleaning, restoring and shaping the pile fibers are shown. The structural element can be distributed uniformly over the entire suction lip, unevenly distributed or only present in a partial area of ​​the suction lip or perpendicular to the suction lip. The structural element can be arranged obliquely toward the pile yarn or directed away from the pile yarn, or can be present in a mixed form of these two methods.

[0049] The structural elements for mechanically cleaning, restoring and shaping the pile fibers can also be arranged in a pattern, for example in a circular shape ( Figure 2a ), according to the shape of the rectangular wave ( Figure 2b ) or wavy or serpentine ( Figure 2c The structural component for mechanical cleaning can also be arranged in a serrated shape, in which case the serrations can be constructed as a trapezoid in cross section ( Figure 2d ) or triangular ( Figure 2e Any other pattern may also be used, such as arranging in parallel rows ( Figure 2s and Figure 2t ). All these patterns can also exist in mixed form, that is, different patterns can exist in combination with each other.

[0050] exist Figure 2h to Figure 2q In the figure, the outline of the structural element for mechanical cleaning, restoring and shaping of pile fibers is shown in a side view from the direction of movement of the suction device. In the correspondingly shown planes, the structural element for mechanical cleaning, restoring and shaping of pile fibers is arranged in different lengths. For example, in Figure 2q In the example, the length of the pile fibers in the middle is shorter than that at the two side surfaces.

[0051] Figures 2r to 2y The arrangement pattern of the structural member for mechanically cleaning, restoring and shaping the pile fibers is shown with a suction device or a bottom view of the structural member for mechanically cleaning, restoring and shaping the pile fibers. In the correspondingly shown face, the structural member for mechanically cleaning, restoring and shaping the pile fibers is correspondingly arranged.

[0052] Figures 3a to 3n Different arrangements of structural components for mechanical cleaning on a suction device are shown.

[0053] exist Figure 3a In the example, the direction of movement of the suction device is indicated by an arrow. The suction direction also applies to Figures 3b to 3d The direction of movement can also be opposite.

[0054] Figures 3e to 3k Other arrangements of structural components for mechanical cleaning on the suction device are shown.

[0055] Figures 3l to 3n Different arrangements of the structural member for mechanical cleaning that are spatially separated from the suction device are shown. In this case, the structural member for mechanical cleaning can be moved independently of the suction device.

[0056] exist Figures 3g to 3j In the embodiment, the structural member for mechanical cleaning is arranged within the suction gap.

[0057] exist Figures 3e to 3n In the figure, the direction of movement of the suction device and / or the structural component for mechanical cleaning is shown by arrows. The direction of movement can also be opposite. The flow direction of the fluid during the suction process in filter cleaning is given by a double arrow.

[0058] Figure 3cA suction device with upstream and downstream bristles is shown. The upstream bristles detach dirt sucked up by the suction device from the pile fibers, and the downstream bristles restore the pile fiber layer.

Claims

1. A device for cleaning and / or suctioning pile fibers for pile fabric filtration, wherein: The cleaning and / or suction device can be fluidly connected to a suction source and has at least one suction gap, and is characterized in that a structural component for mechanically cleaning, restoring and / or shaping the pile fibers is provided on the cleaning and / or suction device or as an element separate from the device, and the pile fibers can be oriented in a manner corresponding to the original state of the pile fiber layer through the structural component.

2. The device according to claim 1, characterized in that The structuring element for mechanical cleaning, restoration and shaping of pile fibers has an equivalent diameter of 1 to 4000 μm, preferably 100 to 1000 μm, particularly preferably 100 to 400 μm.

3. The device according to claim 1 or 2, characterized in that: The structural element for mechanical cleaning, restoration and shaping of pile fibers is arranged in the region of the suction lip of the device for cleaning and / or suction.

4. The device according to any one of claims 1 to 3, characterized in that The structural member for mechanically cleaning, restoring and shaping pile fibers is designed as fibers, pile fabrics, bristles, teeth, angled teeth, nubs or a combination of the above members.

5. The device according to any one of claims 1 to 4, characterized in that The structural element for mechanically cleaning, restoring and shaping pile fibers is designed to be flexible.

6. The device according to any one of claims 1 to 4, characterized in that The structural element for mechanical cleaning, restoration and shaping of pile fibers is designed to be rigid and / or fixed.

7. The device according to any one of claims 1 to 6, characterized in that The structural element for mechanical cleaning, restoration and shaping of pile fibers is oriented vertically and / or tangentially away from the plane of the device for cleaning and / or suction and / or is designed to be inclined relative to the plane.

8. The device according to any one of claims 1 to 7, characterized in that The structural element for mechanical cleaning, restoration and shaping of the pile fibers is arranged obliquely toward the pile yarns of the pile fiber layer or oriented away from the pile yarns.

9. The device according to any one of claims 1 to 8, characterized in that The structural members for mechanically cleaning, restoring and shaping the pile fibers are arranged in a uniformly distributed manner.

10. The device according to any one of claims 1 to 9, characterized in that The structural elements for mechanical cleaning, restoration and shaping of the pile fibers are distributed unevenly.

11. The device according to any one of claims 1 to 10, characterized in that The structural component for mechanical cleaning, restoration and shaping of pile fibers consists of plastic, such as, for example, polyethylene terephthalate, polypropylene, polyamide, and / or of metal, in particular steel, preferably stainless steel, and / or of natural materials, in particular plant and / or animal fibers, wood or a combination thereof.

12. The device according to any one of claims 1 to 11, characterized in that The structural member for mechanically cleaning, restoring and shaping the pile fibers is arranged on a support, and the support can be detachably fixed to the device for cleaning and suction.

13. The device according to claim 12, characterized in that The holder can be detachably fastened to the cleaning and vacuuming device by means of a latching connection.

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