• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Water filter with multi-cartridge system for self-cleaning, for pressurized water networks that allows effective cleaning of the system, using the inverse flow generated by the circulation of water through the walls of the different filter cartridges, without the need for mechanisms mobile cleaning and without interrupting the water supply to the network. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2707303A1
    申请号:ES201731175
    申请日:2017-10-03
    公开日:2019-04-03
    发明作者:Martin Joaquin Bayona
    申请人:Martin Joaquin Bayona；
    IPC主号:
    专利说明:

    [0001]
    [0002]
    [0003]
    [0004] The present invention relates to a water filter for pressurized pipe networks that incorporates a novel filtering system consisting basically of the battery arrangement of several filter cartridges aligned in the direction of flow, so that the process itself is optimized. filtration as the cleaning system of the filter itself.
    [0005]
    [0006] BACKGROUND OF THE INVENTION
    [0007]
    [0008] In the processes of water filtration in pressurized pipes, the passage of the fluid is forced through a mesh, grid or screen whose size of hole or opening prevents the passage of suspended solids having a size greater than said orifice.
    [0009] From the smallest water filters that are installed in the domestic supply pipes to the large filters installed in the pipes of the main distribution networks of drinking water and irrigation, all are based on the same principle of operation.
    [0010] Normally these filters that are interspersed in the network of water pipes, adopt a tubular arrangement and a size according to the pipe in which they are installed. In this way, and as indicated in Figure 1, there is an unfiltered water inlet (1), a filter cartridge (2) that holds solid waste and a filtered water outlet (3) . Thus, the unfiltered water chamber (4) is separated from the filtered water chamber (5) by the surface of the filter cartridge (2). The vast majority of water filters installed in pressurized pipes are based on the same principle and can take various forms, such as the shape reflected in Figure 2, which as can be seen has the same components with a different composition.
    [0011] The filters can have one or several stages of filtering that basically differ in the type of mesh, grid or screen that is used in the filter cartridge of each stage. Figure 3 shows the diagram of a 2-stage filter in series, where the unfiltered water inlet (1), the filter cartridge of the first stage (6), is distinguished, the filtered water chamber of the first stage (7), the filtering cartridge of the second stage (8), the filtered water chamber of the second stage (9) and finally the filtered water outlet (3). In this arrangement the filtered water chamber of the first stage (7) communicates with the unfiltered water chamber of the second stage located inside the filter cartridge of the second stage (8).
    [0012]
    [0013] Figure 4 shows the diagram of a 2-stage filter in parallel where the unfiltered water inlet (1), the filter cartridge of the first stage (6), the filtered water chamber of the first stage ( 7), the filtered water outlet of the first stage (10), the filtering cartridge of the second stage (8), the filtered water chamber of the second stage (9) and finally the filtered water outlet of the second stage (9). (eleven). In this arrangement the unfiltered water chambers of both stages located inside the filter cartridges (6) and (8) communicate with each other.
    [0014]
    [0015] Once the principle of operation of the water filtration process in the pressurized pipes has been raised, the fundamental problem that arises in this type of systems is the cleaning of the filter cartridge, since it accumulates in its interior the solid residues that they make it difficult for water to pass through the walls of the filter cartridge, causing a gradual increase in the component's loss of charge and, if the cleaning is not carried out, they can reach the point of completely stopping the flow of the installation.
    [0016]
    [0017] When the filters are small, they have a removable part that allows to remove the filter cartridge and clean it. But naturally to be able to carry out this process it is necessary to cut the supply.
    [0018]
    [0019] When the filters are of a larger size, a system is provided, such as that shown in Figure 5, in which a cleaning valve (12) is installed so that when this valve is opened, an output flow is generated by this valve. valve that draws the solids retained by the filter cartridge (2). This cleaning process can be carried out without interrupting the service, however as the filtering flow continues from the inside of the filter cartridge (2) to the outside, as indicated by the dates (13), the solids retained in the walls of the cartridge filter (2) are not expelled to the outside by the valve (12), so this cleaning process is not very effective.
    [0020] In order to improve to a certain extent the cleaning process in this type of filters, the arrangement shown in Figure 6 can also be considered, where a valve (14) is disposed at the outlet of the filter that if placed in closed position it contributes to some extent to the cleaning process, since the entire flow of the incoming pipe (1) is transformed into cleaning flow, increasing the drag of the solids retained in the filter cartridge, however this system has the disadvantage of having to interrupt the supply and at the same time there is no reverse flow through the walls of the filter cartridge (2), whereby a large part of the solid waste remains adhered to the inner walls of said filter cartridge.
    [0021]
    [0022] In order to achieve an inverse flow through the filter cartridge that facilitates the separation of the solid residues adhered to the inner walls of said filter cartridge, in certain filtration systems an arrangement as shown in Figure 7 is proposed, in which a counter-wash valve (15) is provided which generates a reverse flow through the walls of the filter cartridge (2) as indicated by the arrows (16), however if an effective reverse flow is desired it is necessary to close the valve output (14) with the consequent drawback that supposes the interruption of the supply to the network.
    [0023]
    [0024] All the systems described above require the interruption of the supply to perform a process of cleaning the filter cartridge with a certain degree of effectiveness. However, this interruption of supply can cause many problems in some types of pipe networks such as branched networks, where the supply cuts generate voids and air bags that can have very harmful consequences, all accompanied by the inconveniences for the user of the network supposes the fact of suffering cuts of supply.
    [0025] In the line of achieving a filtering system that guarantees a continuous supply and at the same time an effective cleaning of the filter cartridge, a large number of filter designs have been carried out that incorporate a motor system as shown in Figure 8. In this type of filters the motor system (17) drives a device that moves inside the filter cartridge (2), consisting of a series of scrapers or brushes (18) that move the solid waste adhered to the walls of the filter cartridge (2). ) and that facilitate their expulsion by the cleaning valve (8).
    [0026] If instead of scrapers or brushes there are openings in that drive system or nozzles connected to the cleaning outlet (8) can generate a localized depression which in turn produces a reverse flow located in the area of the opening or nozzle and which facilitates the removal of solid waste adhered to the wall of the filter cartridge (two).
    [0027] This motor system (17) can be of the electric or hydraulic motor type, and normally it has to combine movements of displacement and rotation of the nozzles, brushes or scrapers (18) which naturally complicates the construction of these filtering systems and converts them in high cost systems, which in turn limits its use to a great extent.
    [0028] When any of these filtering cartridge cleaning systems is put into operation automatically, either as a function of the elapsed time, the amount of filtered water or the pressure difference between the filter inlet and outlet, it is transformed the filtering system in a filter called automatic.
    [0029]
    [0030] In conclusion, all the filtering systems described above, regardless of the cleaning system they have, coincide in that they have a single central filter cartridge in each filtering stage. This cartridge can be mesh, perforated plate, grid, plastic rings or any other type that limits the passage of solids in suspension in the water to filter, but definitely all the innovations and improvements that have been added to date in these filtering systems are aimed at modifying the layout and components of the cleaning motor system but all continue to incorporate a single central cartridge in each stage of filtering.
    [0031]
    [0032] EXPLANATION OF THE INVENTION
    [0033]
    [0034] The water filter with multi-cartridge system for self-cleaning, object of this invention, consists of a filtering system in which a battery of several filter cartridges is disposed in the same filtering stage, in order to improve the filtering process itself of the equipment facilitating the cleaning of the same.
    [0035] Figure 9 shows a diagram with an example of this multi-cartridge arrangement and as can be seen there is an unfiltered water inlet (1), an arrangement of several filtering cartridges (19) and a filtered water outlet ( 3) for a single filtration stage.
    [0036] The unfiltered water chamber (20) is arranged in the inlet part of the filter and distributes the unfiltered water to the inside of all the filter cartridges (19). Likewise, the filtered water chamber (21) completely surrounds all the filter cartridges (19).
    [0037] The filter cartridges (19) have the same filtration characteristics since they are part of the same filtering stage.
    [0038] The total filtering surface with this multi-cartridge arrangement increases compared to the single cartridge arrangement with which the filtering capacity is increased with this system.
    [0039] Each of the filter cartridges has in turn associated with a cleaning valve (22) and as can be seen in Figure 9 these valves are in closed position, ie the system is in the process of filtering, with all its active cartridges such as indicated by the water sense dates. The filtering process in this case and in each cartridge is the same as in a conventional filtering system, ie the flow of water to be filtered is introduced inside the filter cartridges (19) and the solids in suspension that have a larger than the size of the mesh hole or grid of the filter cartridge are retained inside it.
    [0040] The main differentiating feature of this type of filter equipped with the multicartucho system and object of this invention takes place in the process of cleaning the filter cartridges that is carried out sequentially.
    [0041]
    [0042] Figure 10 shows the schematic layout of the cleaning process of the first filter cartridge (23). As can be seen in the aforementioned figure, the cleaning valve (24) is open, which generates a flow of entrained solid waste accumulated inside the filter cartridge (23) and at the same time generates a flow inverse through the walls of the filter cartridge (23) as indicated by the arrows (25). This reverse flow is generated because the filtered water chamber (21) remains pressurized since all the filter cartridges except for the filter cartridge (23) continue to provide filtered water to said chamber. It is very important to note that this reverse flow that is generated through the walls of the filter cartridge (23) is of great intensity due to the difference in volume between each of the cartridges and the rest of the volume of the filtering stage itself , all this together with the large relative size of the cleaning valve (24) with respect to the internal diameter of the filter cartridge. All the above produces a considerable flow of drag and a large depression inside the filter cartridge (23) generating a reverse flow which allows to achieve a very important cleaning of both the solid waste accumulated inside the filter cartridge (23) and the solid waste adhered to the wall thereof.
    [0043]
    [0044] Once the first cartridge (23) has been cleaned, the valve (24) is closed and the valve corresponding to the next filter cartridge is opened, repeating the cleaning sequence until all the filter cartridges are complete. As you can see, the entire cleaning process is carried out without interrupting the supply of water to the network at any time.
    [0045] On the other hand it is very important to note that this cleaning process, as can be seen, does not require any motor part that drives brushes, scrapers or nozzles such as those existing in the filters with self-cleaning systems manufactured to date. Therefore it should be noted that the filtering system object of this invention greatly simplifies the construction of this type of filters with self-cleaning system.
    [0046]
    [0047] This cleaning system of the filter cartridges object of this invention also allows in a very simple way to automate the process, because the automation simply has to open and close the cleaning valves during a determined time, without having to combine motor processes, for therefore, it can be programmed in a very simple way with a simple sequence of contacts.
    [0048] The cleaning valves of the filter cartridges can be of the solenoid valve type or of the hydrovalve type, but in any case, the fact that it is only necessary that one of the valves is working each time and linked to the fact that it is not necessary to energize any type of motor system, implies that the energy requirement is minimized, allowing the use of alternative energy systems with their corresponding low power battery systems in order to operate the system correctly and in a completely autonomous and automatic way.
    [0049] BRIEF DESCRIPTION OF THE DRAWINGS
    [0050]
    [0051] Figure 1.- Filter scheme of a stage in the form of Te. Elevation and section.
    [0052] Figure 2.- Schematic of a Y-shaped stage filter.
    [0053] Figure 3.- Schematic diagram of 2 stages in series.
    [0054] Figure 4.- Scheme of 2-stage filter in parallel.
    [0055] Figure 5.- Filter diagram with cleaning valve.
    [0056] Figure 6.- Filter diagram with cleaning valve and valve at the outlet.
    [0057] Figure 7.- Filter scheme with backwash valve.
    [0058] Figure 8.- Filter scheme with motor system for self-cleaning.
    [0059] Figure 9.- Multi-cartridge filter scheme in the filtering process. Elevation and section. Figure 10.- Multi-cartridge filter scheme in self-cleaning process. Elevation and section.
    [0060] Figure 11.- Perspective view of the embodiment of the multi-cartridge filter system of a filtering stage.
    [0061] Figure 12. Exploded perspective view of the main body of the multicart filter system embodiment example of a filtering stage.
    [0062] Figure 13.- Sectional perspective view of the main body of the multi-cartridge filter system embodiment of a filtering stage.
    [0063] Figure 14.- Perspective view of embodiment of multi-cartridge filter system with two stages of filtering.
    [0064] Figure 15.- Exploded perspective view of the main body of the embodiment of a two-stage filtering multi-cartridge filter system.
    [0065] Figure 16.- Sectional perspective view of the main body of the embodiment of the two-stage filtering multi-cartridge filter system.
    [0066] PREFERRED EMBODIMENT OF THE INVENTION
    [0067]
    [0068] To set forth a first practical embodiment of the invention, a simple filter system is proposed for a sprinkler irrigation network, with a single filtering stage, represented with a perspective view in Figure 11, with a central body (26). ) DN200 stainless steel tube, inlet flange (27) DN100, outlet flange (28) DN100, 1/4 "inlet pressure inlet hose (29), outlet pressure inlet hose (30) of 1/4 ", set of cleaning solenoid valves (31) DN50 and cleaning outlet (32) of DN80.
    [0069] Figure 12 shows the exploded view of the main body of the proposed filter, where you can see the battery of 3 filter cartridges (33), which have been raised conically and manufactured with perforated sheet of stainless steel with hole 2 mm, which is the diameter normally used in filters intended for sprinkler irrigation. In this same figure you can see the detail of the flat rubber gasket (34) used to achieve the sealing of the filter body, the cover (35) of stainless steel which in turn has welded 3 sleeves (36) of DN50 for the subsequent assembly of the corresponding cleaning solenoid valves. To show the internal arrangement of the components of the mounted filter, Figure 13 is attached, which reflects a sectioned view of the filter, wherein the unfiltered water chamber (37), the arrangement of the filter cartridges (33) and the filtered water chamber (38) that surrounds all the filter cartridges.
    [0070]
    [0071] To set forth a second practical embodiment of the invention, a 2-stage filter system is proposed for a sprinkler irrigation network, represented with a perspective view in Figure 14, with a central body (39) made of steel tube. DN300 stainless steel, inlet flange (40) DN150, outlet flange (41) DN150, 1/4 "inlet pressure inlet hose (42), first stage outlet pressure inlet hose (43) 1/4 ", outlet pressure socket for the second stage (44) 1/4", first stage cleaning outlet sleeve (45) DN50, set of 6 second stage cleaning solenoid valves ( 46) DN50 and cleaning outlet (47) of DN80.
    [0072] Figure 15 shows the exploded view of the main body of the proposed filter, where the cartridge of the first stage (48) which is made of perforated sheet of stainless steel with a hole of 12 mm can be observed and is mainly intended to stop large objects that could damage the system, in fact, it is commonly known as "stone hunt", the rubber gasket of the cover of the first stage (49) is also arranged with its corresponding cover of the first stage (50). This first stage of the proposed filter has a similar disposition to the existing filters in the market and does not imply any type of innovation. On the contrary, the application of the system object of this patent is applied in the second stage of this filter, as can be seen in this Figure 15, the battery has 6 filter cartridges (51), which have been designed conically and manufactured with perforated stainless steel plate with 2 mm hole, also the corresponding flat rubber gasket (52), the cover (52) made of stainless steel which in turn has welded 6 sleeves (54) of DN50 for the rear assembly of the corresponding cleaning electrovalves.
    [0073] To show the internal arrangement of the components of this mounted filter is attached Figure 16, which reflects a sectioned view of the filter, where the unfiltered water chamber can be distinguished from the first stage (55), the filtered water chamber of the first stage (56), the arrangement of the filter cartridges (51), and the filtered water chamber of the second stage (57) that surrounds all the filter cartridges.
    [0074] These two examples of practical embodiment shown above are directly of industrial application and with the shown arrangement can be perfectly integrated into a pressurized water network to meet its objective.
    权利要求:
    Claims (10)
    [1]
    1. Water filter with multi-cartridge system for self-cleaning, characterized by the provision of a battery of filter cartridges (19) in the same stage, with an arrangement that allows the connection of each of the filter cartridges with its corresponding valve cleaning (22) to achieve that with the opening of said cleaning valve and without interrupting the filtering process of the equipment the effective discharge of the residues retained inside the filter cartridge is effected by means of an inverse flow generated through the walls of the said filter cartridge.
    [2]
    2. Water filter with multi-cartridge system for self-cleaning, according to claim 1, characterized by the provision of filter cartridges of cylindrical shape of perforated sheet or filter mesh.
    [3]
    3. Water filter with multi-cartridge system for self-cleaning, according to claim 1, characterized by the provision of cone-shaped filter cartridges of perforated sheet or filter mesh.
    [4]
    4. Water filter with multi-cartridge system for self-cleaning, according to claim 1, characterized by the existence of a single filtering stage in which the battery of the filter cartridges is disposed.
    [5]
    5. Water filter with multi-cartridge system for self-cleaning, according to claim 1, characterized by the existence of 2 or more stages of filtering in which at least one of them has a battery of filter cartridges.
    [6]
    6. Water filter with multi-cartridge system for self-cleaning, according to the preceding claims, characterized by the arrangement of a group of cleaning valves of the electrovalve type.
    [7]
    7. Water filter with multi-cartridge system for self-cleaning, according to claims 1, 2, 3, 4 and 5, characterized by the arrangement of a group of cleaning valves of the hydrovalve type.
    [8]
    8. Water filter with multi-cartridge system for self-cleaning, according to claims 6 and 7, characterized by the provision of an automation system that allows the programming of cleaning cycles of the filter cartridges by means of contact sequences.
    [9]
    9. Water filter with multi-cartridge system for self-cleaning, according to the previous claims, characterized in that the angle formed by the flow direction of the unfiltered water inlet (1) and the water flow of the filtered water outlet ( 3) form an angle of 90 °.
    [10]
    10. Water filter with multi-cartridge system for self-cleaning, according to previous claims, 1, 2, 3, 4, 5, 6, 7 and 8, characterized in that the angle formed by the flow direction of the unfiltered water inlet (1) and the water flow of the filtered water outlet (3) form an angle other than 90 °.
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    同族专利:
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3388799A|1965-06-24|1968-06-18|Jesse T Rymer|Filter for fluids|
    US3717252A|1970-07-09|1973-02-20|M Picard|Self-cleaning filter|
    US5024771A|1990-02-14|1991-06-18|Everfilt Corporation|Liquid filter and methods of filtration and cleaning of filter|
    US5846420A|1993-07-27|1998-12-08|Thermo Fibertek Inc.|Filter backflushing system using piston arrangement with connected chambers|
    US20040262243A1|2003-06-26|2004-12-30|Lancer Partnership, Ltd.|Method and apparatus for a water filter backflush|
    CN204933008U|2015-08-04|2016-01-06|金钢热工（湖北）有限公司|A kind of automatic pollution discharge multi-cartridge filter|
    法律状态:
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    2019-09-25| FA2A| Application withdrawn|Effective date: 20190919 |
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201731175A|ES2707303B2|2017-10-03|2017-10-03|WATER FILTER WITH MULTICARTUCTION SYSTEM FOR SELF-CLEANING.|ES201731175A| ES2707303B2|2017-10-03|2017-10-03|WATER FILTER WITH MULTICARTUCTION SYSTEM FOR SELF-CLEANING.|
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