RU184549U1 - FILTER ELEMENT WITH CONDUCTIVE DAMAGE INDICATOR - Google Patents

Abstract

The utility model is intended for filtering. The filter device includes a filter formed by filter elements, where the filter is located around a central shaft. The central shaft and the filter are rotatable around the longitudinal axis of the central shaft. The filter element includes a permeable membrane layer forming the suction wall of the specified filter element, an indicator designed to form an indication of damage when the filter element is damaged. The filter elements are located in the address cells of the fault indication, which are arranged in series in the direction of the central shaft. The damage indication address cell includes a transmitting device connected to filter element indicators located in the indicated damage indication address cell. The transmitting device includes transmission means for wirelessly reporting a fault signal based on a fault indication on at least one indicator included in said address cell. Thus, the fault signal is intended to indicate the address cell of the fault indication in which the indicated fault indication is generated. Effect: providing quick detection of a damaged filter element. 24 s.p. f-ly, 20 ill.

Description

This utility model relates to filtering devices comprising a filter including filter elements.

Filtration is a widely used process in which a suspension or mixture of a liquid and a solid is forcedly passed through the medium, while the solids are retained on the medium in the form of cake, and the liquid phase passes through the medium. This process is generally widespread in industry. Examples of filtration include depth filtration, pressure filtration and vacuum filtration, gravity and centrifugal filtration.

The formation of cake in vacuum filtration is based on the creation of vacuum in the filter channels. The most widely used filter media for vacuum filters are filter cloths and coated media, such as ceramic filter media. These filter media are typically used in filter devices containing a filter including filter elements, for example, in rotating vacuum disk filters and rotating vacuum drum filters.

Rotary vacuum disk filters are used to filter relatively well-filtered suspensions on an industrial scale, for example, in the dehydration of mineral concentrates. The dehydration of mineral concentrates requires high throughput, in addition to the requirement of obtaining cake with a low moisture content. Such large-scale processes are usually energy-intensive and require means to reduce specific energy consumption. The vacuum disc filter may include filter discs arranged coaxially one after another and around a central pipe or shaft. Each filter disk may be made up of a number of separate filter elements or sectors, called filter plates, which are mounted circumferentially in a radial plane around a central pipe or shaft to form a filter disk, and since the shaft is rotatably mounted, each filter plate or sector, in turn, they move to the sludge pool, and then, as the shaft rotates, they rise from the pool. When the filter medium is immersed in the sludge pool, under the influence of vacuum, cake is formed on top of this medium. When the filter sector or plate leaves the pool, the pores are released as the cake is dehydrated for a predetermined time, which is essentially limited by the speed of the disk. The cake can be discharged by reverse air flow or scraping, after which the cycle starts again. While the use of a fabric filtration medium requires high-power vacuum pumps, due to vacuum losses through the fabric during tissue dehydration, the ceramic filter medium, when soaked, does not allow air to pass through it, which also reduces the necessary level of vacuum, ensuring the use of less powerful vacuum pumps, and therefore, leading to significant energy savings.

Rotary vacuum drum filters are used to filter relatively well-filtered suspensions on an industrial scale, for example, in the dehydration of mineral concentrates. The dehydration of mineral concentrates requires high throughput, in addition to the requirement of obtaining cake with a low moisture content. The vacuum drum filter may include a cylindrical supporting structure rotating around a longitudinal shaft forming the central axis of the drum. Filter elements or plates are located on the outer surface of the cylinder. Each filter element forms part of the cylindrical outer surface of the cylinder. Each filter element during each revolution of the shaft moves for a certain period of time in the sludge pool located under the shaft. The filter plate rises from the pool as the shaft rotates. When the filter plate is immersed in the sludge pool, cake is formed on the outer surface of the filter plate due to the vacuum inside the filter plate. When the filter plate leaves the pool, the pores are released as the cake is dehydrated for a predetermined period of time, which is essentially limited by the rotation speed of the drum. The cake is discharged by reverse air flow or scraping, after which the cycle begins again. The filter elements of the rotating vacuum drum filters are mainly made of porous ceramics.

The filter elements are adversely affected by sludge particles and foreign compounds, especially in the field of application related to dehydration of mineral concentrates. From time to time during operation, damage to the filter elements occurs when the filter elements age, something gets stuck in the scrapers, or for some other reason. A damaged ceramic element must be removed, since there is a significant risk that damage to one element will cause a domino effect, since particles of the damaged element can damage adjacent filter plates, etc., which can lead to mass destruction of damaged plates and damage to the filter device long period of time. A damaged fabric element can cause excessive energy consumption due to air leakage.

Common to rotating vacuum disk filtering devices and rotating vacuum drum filtering devices is a large number of filtering elements. This leads to a problem in that it can be difficult to quickly detect a damaged filter element in the device.

WO 2014/170532 describes a disk filter device comprising coaxial filter disks whose sectors are formed by filter plates containing a conductive wire that is damaged when the plate is damaged. The conductive wires of the filter plates of the same sector of sequential coaxial filter disks are connected in series. The filtering device also includes a controller for monitoring the integrity of the serial connection of the conductive wires of the filter plates and signaling damage in case of damage to the serial connection of the conductive wires.

The disk filter device described in WO 2014/170532 does not solve the above problem of quickly detecting a damaged filter element, because the damage signal does not indicate the filter disk in which the damaged filter plate is located.

Brief Description of the Utility Model From the point of view of one aspect, there is provided a filter device comprising a filter formed by a plurality of filter elements, wherein the filter is located around the central shaft, the central shaft and the filter being rotatable around the longitudinal axis of the central shaft; the filter element includes a permeable membrane layer forming the suction wall of the specified filter element, an indicator designed to generate an indication of damage when the filter element is damaged, where the filter elements are located in the address cells of the damage indication, while the address cells of the damage indication are arranged in series in the direction of the central shaft; the damage indication address cell includes a transmitting device connected to filter element indicators located in the indicated damage indication address cell, the transmitting device including transmission means for wirelessly reporting the damage signal based on the damage indication on at least one indicator included in said address cell fault indication, thus the fault signal is designed to indicate the address of the fault indication cell in which The indicated fault indication is generated.

Thus, it is possible to provide a filter device in which a damaged filter element can be quickly detected.

In one embodiment, the transmitter is located in a portion of the device that is not replaced in the filter element replacement procedure. The advantage is that the transmitter does not need to be replaced in vain and more expensive and high-quality transmitters can be used.

In one embodiment, the transmitting device is located in the central shaft of the filter device. The advantage is that they minimize the risk of exposure to sludge and discharged liquids on the transmission device.

In one embodiment, the transmitting device is located in a supporting structure that attaches the filter element to the central shaft of the filter device. The advantage is that the transmitting device is attached to the device, and therefore, the location information of the transmitting device can be encoded in the transmitting device. Moreover, the transmitter is protected from exposure to process fluids and mechanical stresses.

In one embodiment, the transmitter is located in a fluid channel for moving fluids into and out of the filter element. The advantage is that the transmitting device is attached to the device, and therefore, the location information of the transmitting device can be encoded in the transmitting device. Moreover, the operator can easily get to the transmitting device and, thus, quickly connect it to the cable connection of the device.

In one embodiment, the transmitting device includes a tag / transmitter of a radio frequency identification system (RFID). The advantage is that a small and reliable transmission device can be obtained.

In one embodiment, the transmitter is a passive RFID tag / transmitter. The advantage is that there is no need for an external power source for the transmitter.

In one embodiment, the permeable membrane layer is a porous ceramic membrane layer. The advantage is that a mechanically and chemically resistant membrane layer can be obtained.

In one embodiment, at least a portion of the indicator is located in a layer of a porous ceramic membrane. The advantage is that an immediate indication of damage can be obtained when the membrane layer is damaged.

In one embodiment, said portion of the indicator is sandwiched between a layer of a porous ceramic membrane and a substrate supporting said layer of membrane. The advantage is that the membrane protects the indicator from direct mechanical and chemical influences of the working environment.

In one embodiment, at least a portion of the indicator is located on the peripheral surface of the outer edge of the filter element. The advantage is that the indicator is not directly affected by mechanical stresses generated, for example, by scrapers.

In one embodiment, the permeable membrane layer comprises a fibrous material, such as a fabric, containing monofilament and / or complex filaments. The advantage is that the membrane layer can be cheap to manufacture and can be replaced quickly.

In one embodiment, the at least one indicator includes a conductive wire. The advantage is that you can easily track the integrity of the wire.

In one embodiment, the at least one indicator comprises an optical fiber. The advantage is that the optical fibers are made of chemically resistant materials. In addition, they are easy to incorporate into the device. In addition, the optical fiber can easily be damaged and cracked, and therefore, a damage signal can be generated at an early stage of damage.

In one embodiment, the at least one indicator includes a device for generating an audio signal. The advantage is that an audible signal can be heard even if the indicator is covered with residues or ore.

In one embodiment, the device includes at least three address cells indicating failure, located in series in the direction of the Central shaft. The advantage is that the address cell for the indication of damage can be short enough so that personnel can immediately detect a damaged element.

In one embodiment, the device includes at least five address cells indicating failure, located in series in the direction of the central shaft. The advantage is that the address cell of the fault indication can be short enough so that personnel can immediately detect a damaged element even in a very large filter device.

In one embodiment, the filter device includes coaxial filter disks arranged in series with sectors formed from sector filter elements, and the damage indication address cell extends to no more than four filter disks and includes a maximum of four adjacent filter elements in the circumferential direction of the filter disk. The advantage is that the fault indication address cell can be small enough for personnel to immediately detect a damaged item.

In one embodiment, the damage indication address cell includes a maximum of two filter elements in the circumferential direction of the filter disk. The advantage is that a damaged element can be detected very quickly.

In one embodiment, the damage indication address cell includes at most one filter element in the circumferential direction of the filter disk.

The advantage is that a damaged element can be detected even faster.

In one embodiment, the damage indication address cell extends to a maximum of two filter discs. The advantage is that a damaged element can be detected very quickly.

In one embodiment, the damage indication address cell extends to only one filter disk. The advantage is that a damaged element can be detected even faster.

In one embodiment, the damage indication address cell includes only one filter element. The advantage is that a damaged element can be identified immediately after an indication of damage.

In one embodiment, the filter device includes a filter drum in which the filter element is part of the outer surface of the filter drum and the damage indication address cell includes at most two filter elements in the circumferential direction of the filter drum. The advantage is that a damaged element can be detected very quickly.

In one embodiment, the damage indication address cell includes at most one filter element in the circumferential direction of the filter drum. The advantage is that a damaged element can be detected even faster.

In one embodiment, the damage indication address cell includes no more than two filter elements in the direction of the central shaft. The advantage is that a damaged element can be detected very quickly.

In one embodiment, the damage indication address cell includes no more than one filter element in the direction of the central shaft. The advantage is that a damaged element can be detected even faster.

In one embodiment, the transmitting device is located in the filter element. The advantage is that the transmitting device is automatically replaced together with the filter element, and thus the reliability of the device can be improved. In addition, the signal transmission quality of the transmitter can be better, and the signal can be more easily read by the reader.

In one embodiment, the transmitting device includes an indicator device for indicating a transmitting device generating a damage signal, such as a light element, preferably an LED or a device for generating an audio signal. The advantage is that personnel can more quickly locate the transmitter.

In one embodiment, the wireless signal is a digital signal. The advantage is the ease of handling and processing of the signal.

In one embodiment, the transmitting devices of the two opposite filter elements are connected to each other, and a wireless damage signal is provided based on an indication of damage arising from at least one of the two opposite filter elements. The advantage is that damage to the filter element immersed in the suspension can be immediately noticed.

Some other embodiments differ in what is indicated in the utility model formula. Embodiments of a utility model are also disclosed in the description and drawings of this patent application. The essence of the utility model can also be determined in other ways than that defined in the following utility model formula. Some of the definitions contained in the following utility model formula may not be necessary in terms of individual ideas of the utility model. The features of various embodiments of the utility model, within the scope of the main idea of the utility model, may be applicable in other embodiments.

A brief description of the drawings. Some embodiments presented in the present description are described in more detail in the accompanying drawings, where

in FIG. 1 is a top perspective view showing an example of a vacuum filter device,

in FIG. 2a is a schematic side view of an embodiment of a vacuum filter,

in FIG. 2b is a sectional view of the filter of FIG. 2a

in FIG. 3a is a schematic side view of another embodiment of a vacuum filter,

in FIG. 3b is a sectional view of the filter of FIG. 3a

in FIG. 4a is a schematic side view of a third embodiment of a vacuum filter,

in FIG. 4b is a sectional view of the filter shown in FIG. 4a, in FIG. 5a shows a vacuum filter element,

in FIG. 5b is a side view of an embodiment of the filter element shown in FIG. 5a

in FIG. 5c is a side view of another embodiment of the filter element shown in FIG. 5a

in FIG. 6a shows a second vacuum filter element,

in FIG. 6b is a cross-sectional view of the filter element shown in FIG. 6a

in FIG. 7a shows a third vacuum filter element,

in FIG. 7b is a side view of the filter element shown in FIG. 7a

in FIG. 8a shows a fourth vacuum filter element,

in FIG. 8b is a side view of the filter element shown in FIG. 8a

in FIG. 9a is a top perspective view illustrating another example of a vacuum filter device,

in FIG. 9b is a side view of an embodiment of the filter shown in FIG. 9a

in FIG. 9c is a cross-sectional view of the filter shown in FIG. 9a

in FIG. 9d shows the filter element of the filter shown in FIG. 9a.

In the drawings, some embodiments are shown in simplified form for clarity. Similar parts are indicated in the drawings by the same reference numbers.

Detailed description of the utility model. The principles of embodiments can be used for drying or dewatering fluid materials in any industrial production, in particular, in the mining and mining industries. In the embodiments described herein, the material to be filtered is called a suspension, but the embodiments are not limited to this type of fluid material. The suspension may have a high concentration of solids, for example, concentrates of base metals, iron ore, chromite, ferrochrome, copper, gold, cobalt, nickel, zinc, lead and pyrite.

In FIG. 1 is a top perspective view showing an example of a filter device.

The filtering device 1 in this embodiment is a disk filtering device comprising a filter 2, consisting of several consecutive coaxial filter disks 16, located one after another coaxially around the central shaft 4 of the filter 2.

The filter 2 is supported by bearings on the frame of the filter device and is rotatable around the longitudinal axis X of the filter 2, so that the lower part of the filter 2 is immersed in a slurry basin 21 located below the filter 2. The filter is rotated, for example, by an electric motor, which is not shown in FIG. . one.

The number of filter discs 16 can be, for example, from 2 to 20. The filter device shown in FIG. 1 includes twelve (12) filter discs. The diameter of each disk 16 may be, for example, from 1.5 m to 4 m. Examples of industrially produced filter disks include Ceramec SS filters of the SS-6, SS-15, SS-30, SS-45, SS-60, SS- models 96 and SS-144 manufactured by Outotec Inc.

All filter discs 16 are preferably substantially similar in design. Each filter disk 16 can be formed from a number of individual sector filter elements 3, called filter plates, which are mounted circumferentially in a radial plane around the filter central shaft 4, forming a substantially continuous and flat surface of the disk. The number of filter plates may be, for example, 12 or 15.

The filter discs 16 are formed of sector filter elements 3. The filter elements 3 include a permeable membrane layer 17, which forms the suction wall of these filter elements 3. In addition, the filter element includes an indicator 20, which is designed to provide an indication of damage when the filter element 3 is damaged.

The operation of the disk filter device 1 can be controlled using a filter control unit, such as a programmable logic controller (PLC).

The operation of the disk filter device is already described in the prior art section of this description.

In FIG. 2a is a schematic side view of an embodiment of a filter, and FIG. 2b is a sectional view of the filter of FIG. 2a.

The filter elements 3 are distributed among the address cells 5 of the indication of damage shown by the dashed-dotted line in the drawings. According to one aspect, at least two fault indication address cells 5 are arranged in series in the direction of the central shaft X. The embodiment of FIG. 2a, 2b includes consecutive address cells 5 for indicating damage, but the number of consecutive cells may vary, for example, the following drawings show some examples of possible alternatives.

Accordingly, the damage indication address cells 5 include a maximum of four adjacent filter elements 3, i.e. circumferentially parallel to the filter disk 16. In the embodiment of FIG. 2a, 2b, each damage indication address cell 5 includes three adjacent filter elements 3 in the circumferential direction of the filter disk 16. In order to distinguish the damage indication address cells 5, the filter elements 3 are circled in FIG. 2b. The number of adjacent filter elements 3 included in one cell 5 may vary, for example, the following drawings show some examples of possible alternatives.

The damage indication address cell 5 includes a transmitting device 6 connected to the indicator (s) 20 of the filtering element (s) 3 located (by them) in the indicated damage indication address cell 5. The connection may be a wired or wireless connection. The transmitting device 6 includes transmission means 7 capable of wirelessly transmitting a fault signal based on the fault indication on at least one indicator 20 included in the fault indication address cell 5. The fault signal shows the fault indication address cell 5 in which the indicated fault indication occurs, and therefore, the damaged filter element 3 can be located in the device 1 at the level of the fault indication address cells 5.

In one embodiment, the wireless fault signal is a digital signal. To this end, the transmitting device 6 may include means for converting the analog indication of damage to digital form, i.e. A / D converter, but this is not always necessary.

In another embodiment, the wireless signal is an analog signal.

The damage signal sent using the transmission means 7 is received by the receiving means and sent, for example, to the filter control unit for further processing. The reception means may be, for example, an RFID receiver located in the filtering device 1 or outside the filtering device 1. It should be noted that the receiving means and the filter control unit are not shown in the drawings.

In one embodiment, the transmitting device 6 is located in a part of the device 1, which is not replaced during the replacement process of the filter elements 3. Thus, the transmitting device 6 remains in the device 1, while the filter element 3 is disconnected from the device 1.

In one embodiment, the transmitting device 6 is located in the central shaft 4 of the filter device.

However, in another embodiment, the transmitting device 6 is located in the filter element 3.

In one embodiment, the transmitter 6 includes an RFID tag / transmitter. The passive RFID tag / transmitter has the advantage that it does not require its own energy source, but takes energy for itself from the signals sent by the RFID reader for reading the fault signal. It should be noted that the RFID reader is not shown in the drawings of this description.

However, the transmitter may alternatively be a semi-active or active RFID tag.

In one embodiment, the transmitting device 6 includes an indicator device 13 for indicating a transmitting device 6 generating a damage signal, in particular for indicating the location of the transmitting device 6 to the operator who is about to remove the damaged filter element. The advantage is that the replacement procedure can be shortened. In one embodiment, the indicator device 13 includes a light element 14, preferably an LED. In another embodiment, the indicator device 13 includes a device for generating an audio signal, such as a speaker. In one embodiment, an indicator device 13, such as a light element 14, is provided for each filter element 3. Thus, a damaged filter element is very easy to replace.

In FIG. 3a is a schematic side view of yet another embodiment of a disk filter device, and FIG. 3b is a sectional view of the disk filter device shown in FIG. 3a. This embodiment includes three fault indication address cells 5 arranged consecutively in the direction of the central shaft X. The fault indication address cells 5 extend to four filter discs 16 and include only one filter element 3 in the circumferential direction of the filter disc 16. Thus, in each address cell 5 damage indications are four filter elements.

In one embodiment, the transmitting device 6 is located in the supporting structure 8, attaching the filter element 3 to the Central shaft 4 of the filter device.

In FIG. 4a is a schematic view of a third embodiment of a filter, and FIG. 4b is a sectional view of the filter shown in FIG. 4a.

According to one aspect, the filter device 1 may include at least five fault indication address cells 5 arranged in series in the direction of the central shaft X. In the embodiment shown in FIG. 4a, 4b, the address cell 5 of the fault indication applies only to one filter disk 16, i.e. the number of consecutive address cells 5 for indicating damage is equal to the number of filter disks 16. In this case, the filter device 1 includes twelve (12) filter disks 16, and therefore, twelve consecutive address cells 5 for indicating damage.

In addition, each of the damage indication address cells 5 includes only one filter element 3 in the circumferential direction of the filter disk 16. Thus, each of the damage indication address cells 5 shown in FIG. 4a, 4b includes only one filter element 3.

In one embodiment, the damage indication address cell 5 includes a maximum of two filter elements 3 in the circumferential direction of the filter disk 16.

According to another embodiment, the damage indication address cell 5 extends to a maximum of two filter discs 16.

In one embodiment, the transmission device 6 is located in the fluid channel 9, for example, in a hose or fluid pipe for transporting fluids to and from or from the filter element 3.

In FIG. 5a shows a filter element; FIG. 5b is a side view of an embodiment of the filter element shown in FIG. 5a, and in FIG. 5c is a side view of another embodiment of the filter element shown in FIG. 5a.

According to one aspect, the permeable membrane layer 17 may be a porous ceramic membrane layer, wherein at least a portion of the indicator 20 may be located in said porous ceramic membrane layer.

The filter element 3 includes two membrane layers 17 located on opposite sides of the filter element. Membrane layers are supported by the layers 18 of the substrate.

The inner space may be limited by the opposite layers 17 of the membrane, which leads to a sandwich structure. The inner space allows providing a channel or flow channels in which negative pressure is maintained, i.e. maintain the pressure difference across the suction wall.

The membrane layer 17 contains micropores, which have a strong capillary effect in contact with the liquid. This microporous filter medium allows only liquids to pass through. The filtrate seeps through the membrane layer 17 and the substrate layer 18 when the filter element 3 is immersed in the suspension intended for filtration, and cake from the solid particles of the material is formed on the membrane layers 17.

According to one aspect, the filter element 3 is provided with at least one indicator 20 extending along the filter element 3 with the formation of a continuous circuit, which is located so that it breaks when the filter element 3 is damaged.

In one embodiment, the indicator 20 includes an electrically conductive layer 10, for example, a printed electrical wire, a molten electrical wire, a microstrip line, a separate electrical wire, a metal strip, or a colored electrical circuit.

In the embodiment of FIG. 5a, the indicator 20 is located along the peripheral surface 22 of the outer edge of the filter element 3. The indicator 20 can be coated with an acid-resistant coating, such as paint or epoxy-based enamel. Thus, in embodiments based on the electrically conductive layers, cheaper materials (e.g., copper tape) that are not acid resistant can be used.

Alternatively, the conductive indicator is made of an acid resistant material; for example, platinum or palladium or compositions thereof are particularly preferred materials for the implementation of acid-resistant electrical wiring.

The integrity of the indicator 20 is monitored by the transmitting device 6, and the operation, in particular the rotation of the disk filter device, is immediately stopped in response to a wireless fault signal based on the fault indication on the indicator 20. In addition, the fault signal indicates the fault indication address cell 5 in which the indicated indication of damage is generated. This action will allow you to mainly save all other plates of the filter disk from damage. Downtime is reduced because subsequent damage to several damaged plates is avoided, and the disc filter operator can concentrate on replacing the damaged plate. The number of used damaged filter plates is reduced, resulting in lower operating costs.

In FIG. 5c is a side view of another embodiment of the filter element shown in FIG. 5a. This embodiment is different from that shown in FIG. 5b of the embodiment in that instead of one indicator 20, there are two indicators 20 on the peripheral surface 22 of the outer edge of the filter element 3. Two indicators 20 are located close to the edges of the filter element 3. Thus, the sensitivity of the indicators 20 to damage occurring in membrane layer 17 and / or substrate layer 18.

In FIG. 6a shows a second filter element, and in FIG. 6b is a cross-sectional view of the filter element shown in FIG. 6a.

In this embodiment, the indicator 20 is located between the substrate layer 18 and the membrane layer 17 on both sides of the filter element 3. In this case, the membrane layer 17 protects the indicator 20 from mechanical and chemical stresses from process equipment.

However, the indicator 20 is preferably made of an acid-resistant material, mainly platinum or palladium. The indicator 20 can be made, for example, by applying (preferably printing) a pattern of conductive paste to the outer surface of the substrate layer 18 before obtaining the membrane layer 17. This approach also allows you to determine the delamination of the membrane before the actual damage to the substrate.

In FIG. 7a shows a third filter element, and in FIG. 7b is a side view of the filter element of FIG. 7a.

In this embodiment, the indicator 20 is located mainly on the peripheral surface 22 of the outer edge, but part of it is located on / on the membrane layer 17 near the outer edge of the filter element 3. This part can be located in sections of the membrane layer 17, which are not affected by scrapers of the disk filter devices 1. Alternatively, said part may be located between the substrate layer and the membrane layer of the suction wall.

In another embodiment, another indicator 20 is also provided, part of which is located on / on the opposite membrane layer 17.

The indicator 20 shown in FIG. 7a, 7b includes an optical fiber 11.

In another embodiment, indicator 20 includes a device for generating an audio signal, such as a microphone. Of course, a device for generating an audio signal can be fixed, for example, in the channel 9 for the fluid.

In FIG. 8a shows a fourth filter element, and in FIG. 8b is a side view of the filter element shown in FIG. 8a.

Also in this embodiment, the indicator 20 is located mainly on the peripheral surface 22 of the outer edge, but part of it is located on / on the membrane layer 17 near the means 14 for attaching the filter element 3. This part can be located in sections of the membrane layer 17 that are not affected by scrapers disk filter device 1. Alternatively, said part may be located between the substrate layer and the membrane layer.

In another embodiment, another indicator 20 is also provided, part of which is located on / on the opposite membrane layer 17.

In accordance with one aspect, the permeable membrane layer 17 includes a fibrous material, such as a fabric, including monofilament and / or multifilament yarns.

In FIG. 9a is a top perspective view showing another example of a filter device; FIG. 9b is a side view of an embodiment of the filter shown in FIG. 9a, in FIG. 9c is a cross-sectional view of the filter shown in FIG. 9a, and in FIG. 9d shows the filter element of the filter shown in FIG. 9a.

The filter device 1 may include a filter drum 19, i.e. the filtering device is a drum filtering device. It should be noted that the filter device 1 is shown by a dashed line in FIG. 9a to more clearly show the structure of the filter drum 19.

In the drum filter device 1, the filter element 3 is part of the outer surface of the filter drum 19. The diameter of the filter drum 19 can be, for example, 1.8-4.8 m, and the length in the axial direction can be 1-10 m. The surface area of the filter can make up, for example, 2-200 m ² .

Examples of commercially available drum filters include CDF-6 / 1.8 manufactured by Outotec Inc.

The filter elements 3 are divided into address cells 5 of the indication of damage in basically the same way as described earlier in this description in connection with disk filters. Thus, in accordance with one aspect, at least two fault indication address cells 5 are arranged in series in the direction of the central shaft X of the filter drum 19. The embodiment of FIG. 9a-9c includes two consecutive address cells 5 for indicating damage, but the number of consecutive cells may vary, as described earlier in this description.

In accordance with one aspect, the damage indication address cell 5 includes no more than two filter elements 3 in the direction of the central shaft X. In the embodiment of FIG. 9a-9c, the damage indication address cell 5 includes two filter elements 3 in the direction of the central shaft X.

In accordance with one aspect, the damage indication address cell 5 includes a maximum of two filter elements 3 in the circumferential direction of the filter drum 19. As shown in FIG. 9c, this embodiment includes three (3) filter elements 3 per one address cell 5 for indicating damage in the circumferential direction of the filter drum 19.

In one embodiment, the damage indication address cell 5 includes only one filter element 3.

In FIG. 9d shows the filter element of the filter shown in FIG. 9a. As described earlier in this description, the filter element 3 includes a permeable membrane layer 17, which forms the suction wall of the specified filter element 3. In addition, the filter element 3 includes an indicator 20, which is designed to form an indication of damage when the filter element 3 is damaged.

The main difference between the filter elements of the drum filters and the filter elements of the disk filters is that the latter usually have suction walls on both sides of the filter element, while the filter elements of the drum filter usually have a suction wall only on the outer surface. In addition, the filter elements of the drum filters are typically rectangular in shape, as shown in FIG. 9d.

The indicator 20 may be located in the drum filter element 3 in the same manner as described in connection with FIG. 5a-8b.

The operation of the drum filter device 1 can be controlled using a filter control unit, such as a programmable logic controller (PLC).

The operation of the drum filter device is already described in the section of this description related to the prior art.

As in the disk filtering devices described earlier in this description, the damage indication address cell 5 includes a transmitting device 6 connected to the indicator (s) 20 of the filtering element (s) 3 located in the specified address cell 5 indication of damage. The transmitting device 6 includes transmission means 7 that allow the signal to be transmitted wirelessly based on the fault indication on at least one indicator 20 included in the indicated fault indication address cell 5. The fault signal shows the fault indication address cell 5 in which the indicated fault indication is generated, and therefore, the damaged filter element 3 can be located in the device 1 at the level of the fault indication address cells 5.

In one embodiment, the wireless fault signal is a digital signal. For this purpose, the transmitting device 6 may include means for converting the analogue fault indication into digital form, i.e. A / D converter, but this is not always necessary.

In another embodiment, the wireless fault signal is an analog signal.

In one embodiment, the transmitting device 6 is located in the part of the device 1, which is not changed during the procedure for replacing the filter elements 3. Thus, the transmitting device 6 remains in the device 1, while the filter element 3 is disconnected from the device 1.

In one embodiment, the transmitting device 6 is located in the central shaft 4 of the filter device 1.

In another embodiment, the transmitting device 6 is located on the supporting structure 8, attaching the filter element 3 to the Central shaft 4 of the filter device.

In yet another embodiment, the transmission device 6 is located in the fluid channel 9, for example, in a hose or pipe, designed to move fluids into and out of the filter element 3.

However, in another embodiment, the transmission device 6 is located in the filter element 3, as shown in FIG. 9d.

In accordance with one aspect, transmitter 6 includes an RFID tag / transmitter. A passive RFID tag has the advantage that it does not require its own energy source, but takes energy for itself from signals sent by an RFID reader designed to read a fault signal. It should be noted that the RFID reader is not shown in the drawings of this description.

However, alternatively, the transmitter 6 may be a semi-active or active RFID tag.

In one embodiment, the transmitting device 6 includes an indicator device 13 for indicating a transmitting device 6 generating a damage signal, in particular for indicating the position of the transmitting device 6 to an operator who retrieves the damaged filter element. The advantage is that the replacement procedure time can be reduced. In one embodiment, the indicator device 13 includes a light element, preferably an LED. In another embodiment, the indicator device 13 includes a device for generating an audio signal, such as a speaker.

The utility model is not limited only to the embodiments described above, on the contrary, many changes are possible within the scope of protection of the utility model defined by the utility model formula presented below. Within the scope of protection of a utility model, features of various embodiments and applications may be used in conjunction with or replaced by features of another embodiment or application.

The drawings and the corresponding description are intended only to illustrate the essence of the utility model. The utility model may differ in detail within the scope of protection of the utility model, as defined in the following utility model formula.

Designation List

1 filter device

2 filter

3 filter element

4 central shaft

5 address fault indication cell

6 transmitting device

7 transmission media

8 load-bearing structure

9 fluid channel

10 conductive layer

11 optical fiber

13 indicator devices

14 fasteners

16 filter disc

17 permeable membrane layer

18 layer backing

19 drum filter

20 indicator

21 sludge pool

22 peripheral surface of the outer edge X longitudinal axis.

Claims (32)

1. The filtering device (1), comprising a filter (2) formed by filtering elements (3), where the filter (2) is located around the Central shaft (4), the central shaft (4) and the filter (2) are rotatable around the longitudinal axis (X) of the central shaft, the filter element (3) includes a permeable membrane layer (17) forming the suction wall of the specified filter element, an indicator (20), designed to form an indication of damage when the filter element (3) is damaged, where the filter elements (3) are located in the address cells (5) indication of damage, characterized in that the address cells (5) of the damage indication are arranged in series in the direction of the central shaft (4); the damage indication address cell (5) includes a transmitting device (6) connected to indicators (20) of filter elements (3) located in the indicated damage indication address cell (5), and the transmitting device (6) includes transmission means (7) for wirelessly reporting a fault signal based on a fault indication on at least one indicator (20) included in said fault indication address cell (5), thus, the fault signal is intended to indicate the address cell (5) of the fault indication in which the fault indication is generated. 2. The device according to claim 1, in which the transmitting device (6) is located in the part of the device (1), which is not replaced during the filtering element replacement procedure (3). 3. The device according to claim 2, in which the transmitting device (6) is located in the Central shaft (4) of the filtering device. 4. The device according to claim 2, in which the transmitting device (6) is located in the supporting structure that attaches the filter element (3) to the central shaft (4) of the filter device. 5. The device according to claim 2, in which the transmitting device (6) is located in the channel (9) for a fluid designed to move fluids into and out of the filter element (3). 6. The device according to claim 1, in which the transmitting device (6) includes a tag / transmitter of a radio frequency identification system (RFID). 7. The device according to claim 6, in which the RFID tag / transmitter is a passive RFID tag / transmitter. 8. The device according to claim 1, in which the permeable membrane layer (17) is a layer of a porous ceramic membrane. 9. The device according to claim 8, in which at least a portion of the indicator (20) is located in the layer of the porous ceramic membrane. 10. The device according to claim 9, in which the indicated part of the indicator (20) is located between the layer of the porous ceramic membrane and the substrate (18) supporting the specified layer of the membrane. 11. The device according to claim 1, in which at least a portion of at least one indicator (20) is located on the peripheral surface (22) of the outer edge of the filter element. 12. The device according to claim 1, in which the permeable membrane layer (17) includes a fibrous material. 13. The device according to p. 12, in which the permeable membrane layer (17) is a fabric comprising monofilament and / or complex threads. 14. The device according to claim 1, in which at least one indicator (20) includes a conductive wire. 15. The device according to claim 1, in which at least one indicator (20) includes an optical fiber. 16. The device according to claim 1, in which at least one indicator (20) includes a device for generating an audio signal. 17. The device according to claim 1, where the filter device (1) includes coaxial filter disks (16) arranged in series with sectors formed from sector filter elements (3), and the address cell (5) of the damage indication applies to no more than four filter elements disk (16) and includes a maximum of four adjacent filter elements (3) in the circumferential direction of the filter disk (16). 18. The device according to p. 17, in which the address cell (5) indication of damage extends to only one filter disk. 19. The device according to claim 18, in which the address cell (5) for indicating damage includes only one filter element (3). 20. The device according to claim 1, where the filter device (1) includes a filter drum (19), in which the filter element (3) is part of the outer surface of the specified filter drum. 21. The device according to claim 20, in which the address cell (5) for indicating damage includes no more than one filter element (3) in the circumferential direction of the filter drum (21). 22. The device according to claim 20, in which the address cell (5) for indicating damage includes no more than one filter element (3) in the direction of the central shaft (4). 23. The device according to claim 1, in which the transmitting device (6) is located in the filter element (3). 24. The device according to claim 1, in which the transmitting device (6) includes an indicator device (13), designed to indicate the transmitting device (6), which generates a signal of damage. 25. The device according to claim 1, in which the transmitting devices (6) of two opposite filtering elements (3) are connected to each other, and a wireless damage signal is transmitted based on an indication of damage arising from at least one of the two opposite located filter elements (3).

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