阅读说明：本技术 过滤系统 (Filter system ) 是由 K·德维尔 O·伊莱士 于 2018-11-29 设计创作，主要内容包括：一种用于过滤液体的过滤器,包括：圆柱形壳体；以及垂直于圆柱形壳体的高度定位的多个盘,多个盘中的每个盘包括第一数量的盒体,其中每个盒体的形状为截头扇形体,该截头扇形体具有宽端和窄端,所述盒体被布置成使得盘的周边由第一数量的盒体的宽端构成,并且其中第一数量的盒体中的每个盒体在其宽端处连接至壳体,并且每个盒体具有沿宽端的开口,其中在过滤期间,被过滤的液体在多个盘上流向多个盘的周边。(A filter for filtering a liquid, comprising: a cylindrical housing; and a plurality of discs positioned perpendicular to the height of the cylindrical housing, each disc of the plurality of discs comprising a first number of cartridges, wherein each cartridge is in the shape of a truncated sector having a wide end and a narrow end, the cartridges being arranged such that the perimeter of the disc is constituted by the wide ends of the first number of cartridges, and wherein each cartridge of the first number of cartridges is connected to the housing at its wide end and has an opening along the wide end, wherein during filtration, liquid being filtered flows over the plurality of discs to the perimeter of the plurality of discs.)

1. A filter, comprising:

a cylindrical housing; and

a plurality of disks positioned perpendicular to the height of the cylindrical housing, each disk of the plurality of disks comprising a first number of cartridges, wherein each cartridge is in the shape of a truncated sector having a wide end and a narrow end, the cartridges being arranged such that the perimeter of the disk is constituted by the wide ends of the first number of cartridges, and wherein each cartridge of the first number of cartridges is connected to the housing at its wide end and each cartridge has an opening along the wide end,

wherein during filtration, the liquid being filtered flows over the plurality of discs toward the periphery of the plurality of discs.

2. The filter of claim 1, configured such that the plurality of discs remain stationary during liquid filtration and during flushing of the system.

3. The filter of claim 1, wherein each cartridge includes an opening at a wide end thereof, and wherein filtered liquid exits the system through the opening.

4. A filter according to claim 3, wherein the openings of the respective cartridges comprised in adjacent discs are connected to form a duct, thereby forming a number of ducts equal to the first number, through which the filtered liquid flows out of the system.

5. The filter of claim 1, wherein each cassette comprises a plate having a plurality of supports thereon, and each cassette is wrapped with a thread forming a loop around the cassette.

6. The filter of claim 1, configured such that liquid to be filtered flows into and out of the cartridge perpendicular to the disc and flows within the filter parallel to the disc.

7. The filter of claim 1, wherein each cartridge comprises a plate with a plurality of supports thereon, and each cartridge is wrapped with wire that forms wire loops around the cartridge, and wherein the liquid to be filtered flows into and out of the filter perpendicular to the discs and flows within the filter parallel to the discs such that particles to be filtered are captured between the wire loops.

8. The filter of claim 1, further comprising a flushing system comprising a first plurality of nozzles connected to a first common conduit, each nozzle in the first set being located between two adjacent filter discs.

9. The filter of claim 8, wherein an end of each nozzle of the plurality of nozzles is movable over substantially an entire area of the two adjacent filter layers.

10. The filter of claim 8, wherein the common conduit is moved by a planetary gear.

11. The filter of claim 8, wherein an end of each of the plurality of nozzles is rotatable in a helical motion over two adjacent filter discs.

12. The filter of claim 11, wherein the helical motion is generated by two motors.

13. The filter of claim 12, wherein the two motors have different rotational speeds.

14. The filter according to claim 11, wherein the helical motion is generated by two cogwheels rotating at different angular velocities.

15. The filter of claim 8, wherein the first plurality of nozzles are moved by a mechanism external to the cylindrical housing.

16. The filter of claim 8, wherein the flushing system further comprises a second plurality of nozzles connected to a second common conduit, each nozzle in the second set being located between two adjacent filter discs.

17. A filter, comprising:

a cylindrical housing; and

a plurality of disks positioned perpendicular to the height of the cylindrical housing, each disk of the plurality of disks comprising a first number of cartridges, wherein each cartridge is in the shape of a truncated sector having a wide end and a narrow end, the cartridges being arranged such that the perimeter of the disk is formed by the wide ends of the first number of cartridges, and wherein each cartridge of the first number of cartridges is connected to the housing at its wide end and each cartridge has an opening along the wide end.

18. A method of filtering comprising:

providing a filter according to any one of claims 1-17; and

providing liquid to the filter through an inlet of the filter such that the liquid flows over the plurality of discs to the periphery of the plurality of discs and exits the filter through an outlet of the filter.

Technical Field

The present invention relates to the field of filtration systems.

Background

Drum-type filter assemblies typically include a drum-like housing having therein a filtration system including one or more substantially circular parallel filtration arrays. Each array is substantially shaped as a disk and is made up of one or more segments, each of which may be shaped like a segment having a wide end and a truncated corner forming a narrow end. Typically, the segments are connected at their narrow ends to, or form, conduits which constitute the outlet of the filter.

Thus, liquid flows into the filter from the periphery of the disc and out through the ducts formed around the center of the filter disc.

This model has a number of disadvantages including a high footprint, i.e. low throughput relative to the size of the filter assembly. Accordingly, there is a need in the art for an advanced filtration system that overcomes the advantages of prior art systems.

The foregoing examples of the related art and limitations related thereto are intended to be illustrative and not exclusive. Other limitations of the related art will become apparent to those of skill in the art upon a reading of the specification and a study of the drawings.

Disclosure of Invention

The following embodiments and aspects thereof are described and illustrated in conjunction with systems, tools, and methods which are meant to be exemplary and illustrative, not limiting in scope.

One exemplary embodiment of the disclosed subject matter is a filter for filtering a liquid, comprising: a cylindrical housing; and a plurality of discs positioned perpendicular to the height of the cylindrical housing, each disc of the plurality of discs comprising a first number of cartridges, wherein each cartridge is in the shape of a truncated sector having a wide end and a narrow end, the cartridges being arranged such that the periphery of the disc is formed by the wide ends of the first number of cartridges, and wherein each cartridge of the first number of cartridges is connected to the housing at its wide end and each cartridge has an opening along the wide end, wherein during filtration liquid to be filtered flows over the plurality of discs towards the periphery of the plurality of discs.

Within the filter, the plurality of discs are optionally static during liquid filtration and during system flushing.

Within the filter, each cartridge optionally includes an opening at its wide end, and wherein filtered liquid exits the system through the opening.

Within the filter, the openings of the respective cartridges comprised in adjacent discs are optionally connected to form ducts, through which the filtered liquid flows out of the system, so as to form a number of ducts equal to the first number.

Within the filter, each cartridge optionally comprises a plate having a plurality of supports thereon, and each cartridge is wrapped by a thread forming a loop around the cartridge.

Within the filter, the liquid to be filtered optionally flows into and out of the cartridge perpendicular to the disc and flows within the filter parallel to the disc.

Within the filter, each cartridge optionally comprises a plate with a plurality of supports thereon, and each cartridge is wrapped by wire that forms wire loops around the cartridge, and wherein liquid to be filtered flows into and out of the filter perpendicular to the disc and flows within the filter parallel to the disc, such that particles to be filtered out are captured between the wire loops.

The filter may further comprise a flushing system comprising a plurality of nozzles connected to a common conduit, each nozzle being located between two adjacent filter discs.

Within the filter, the end of each nozzle of the plurality of nozzles optionally moves over substantially the entire area of two adjacent filter layers.

Within the filter, the common conduit is optionally moved by a planetary gear.

Within the filter, the end of each of the plurality of nozzles is rotated on two adjacent filter discs, optionally in a helical motion.

Within the filter, a helical motion is optionally generated by two motors.

Within the filter, the two motors optionally have different rotational speeds.

Within the filter, the helical motion is generated by two cogwheels (cogwheels) rotating at different angular velocities.

Within the filter, a plurality of nozzles are optionally moved by a mechanism external to the cylindrical housing.

In addition to the exemplary aspects and embodiments described above, further aspects and embodiments will become apparent by reference to the drawings and by study of the following detailed description.

Drawings

The subject matter of the present disclosure will be understood and appreciated more fully from the following detailed description taken in conjunction with the accompanying drawings, in which corresponding or like reference numerals or characters indicate corresponding or like parts. Unless otherwise indicated, the drawings provide exemplary embodiments or aspects of the disclosure, and do not limit the scope of the disclosure. In the drawings:

FIG. 1 is a diagrammatic illustration of the internal components of a filter according to some exemplary embodiments of the present subject matter;

fig. 2A is an illustration of a single cartridge according to some exemplary embodiments of the present disclosure;

fig. 2B is an illustration of a cross-section and a liquid flow direction of a cartridge according to some exemplary embodiments of the disclosure;

fig. 2C is an illustration of two cartridges and liquid flow directions according to some exemplary embodiments of the present disclosure;

FIG. 3 is an illustration of a disc of a filter according to some exemplary embodiments of the disclosed subject matter;

FIG. 4 is an illustration of a disc having a filter with a flush mechanism in accordance with some exemplary embodiments of the disclosed subject matter;

FIG. 5 is an illustration of a cross-section of a filter in accordance with some exemplary embodiments of the disclosed subject matter;

FIG. 6 is an illustration of a disc of a filter and a platform thereof, in accordance with some exemplary embodiments of the disclosed subject matter;

FIG. 7 is an illustration of an exterior view of a filter in accordance with some exemplary embodiments of the disclosed subject matter; and

fig. 8A-8E are illustrations of internal components of a filter according to some exemplary embodiments of the disclosed subject matter.

Detailed Description

Disclosed herein is a filtration system for filtering a liquid, such as, but not limited to, water.

Conventional drum filtration systems comprise a plurality of parallel discs, also referred to as an array, each of which comprises a plurality of filter elements, also referred to as cartridges or segments. Each box is shaped as a sector having a wide end and a truncated corner forming a narrow end. The cassettes are positioned adjacent to each other along their side edges to form a tray, and all of the cassettes are connected at their truncated ends to a central conduit. Liquid flows into the filter from the periphery of the drum over the disc where the filtration takes place, and into the central portion of the drum, and to the conduit through which the filtered liquid is output.

This arrangement has a number of disadvantages.

One such drawback is related to the space occupied by the system: the inlet volume is significantly larger than the outlet volume because the liquid flows into its narrowest region over the entire area of each cartridge, thereby restricting the outflow of the filter to a portion of the volume that can be peripherally input to the system. Therefore, the system is too large with respect to the throughput provided.

Another drawback of such a system is the relative mechanical weakness caused by the connection of the cassette to the outlet conduit at its narrowest region.

Another disadvantage of such systems is the complexity of flushing the disc for removing collected dirt. Since the cartridge is attached to or forms a conduit at the central portion of the drum, a rotating mechanism for washing the entire area of the disc cannot be placed at the central area to wash the entire area of the cartridge. Therefore, the discs need to be rotated in order to be able to wash their entire area, which inhibits the fixing of the discs to the drum and therefore weakens the structure.

The presently disclosed subject matter relates to a drum-like casing having a plurality of parallel discs therein, each of which comprises a box shaped as a truncated sector as described above, wherein the sectors are not connected to a central conduit, independent of the central region. Instead, the cartridge may be connected to the housing of the filter, or to the inner drum, by a rod passing through the wide end of the truncated sector. Alternatively, the disc may be additionally secured to the housing or to the inner drum.

The liquid enters the filter in a direction perpendicular to the pan and over the entire pan area. The flow then turns and filters the liquid by flowing over the cartridge. The filtered liquid is then diverted again into the conduit formed by the elongate openings at the wide ends of the plurality of cartridges and continues to be diverted parallel to the drum, which causes the liquid to flow into and out of the filter from the drum.

The flushing system may be located in a central region near the narrow end of the cartridge and, since this region is free, the flushing system may move freely therein. The flushing system may comprise a set of nozzles, wherein each nozzle sprays cleaning liquid, such as water, on one side of one tray and on the opposite side of the adjacent tray.

In some embodiments, the nozzle may be rotated by a two-axis rotation system, so that the nozzle head may be moved in a spiral motion and spray cleaning liquid over the entire area of the disc.

In some embodiments, the flushing system further comprises a second plurality of nozzles connected to a second common conduit, each nozzle of the second plurality being located between two adjacent filter discs.

Accordingly, the disclosed filtration system has significant advantages over prior art systems. The filtered liquid flows through the entire area of the disc and exits the filter through the periphery of the disc. Thus, the output stream is not limited by the narrowest part of the system, and a smaller footprint can be achieved for the same throughput.

In addition, the construction of the filtration system is more robust than conventional systems because the cartridge is connected to the housing through a hole or another structure at its wide end rather than at its narrow end which is directly connected to the conduit. This provides a more robust structure and is less prone to wear.

Further, the disc is connected to the housing and is therefore static during filtration and during rinsing of the machine, providing higher durability.

Referring now to fig. 1, which shows a diagram of the internal components of a filter according to some exemplary embodiments of the present subject matter, and to fig. 2, which shows a diagram of a single cartridge 100. The filter includes a plurality of discs stacked in parallel with each other. Each disc is made of a plurality of cartridges 100, each shaped as a truncated sector. Thus, each cassette 100 has a right side 201, a left side 201', a narrow end 202 and a wide end 203, such that two adjacent cassettes 100 belonging to the same tray have the left side edge 201 of one cassette adjacent to the right side edge 201' of the adjacent cassette.

Each cassette 100 comprises an opening 136 surrounded by a rim 132 on its wide end 203, and as described below, two overlapping cassettes 100 belonging to adjacent discs are connected to each other such that the openings 136 of all overlapping cassettes 100 form outlet ducts. Thus, the filtration system comprises conduits, e.g. 12, 18, etc., outputting the same number of filtered liquids as the number of cartridges in a layer. The length of the conduit is determined according to the height of the cylindrical housing or drum containing the disc.

The term "respective cartridge" relates to two cartridges, such as cartridges 100 and 100', belonging to two parallel and adjacent discs and being located at the same position within each disc. Each pair of corresponding boxes 100, 100' belonging to adjacent discs may be connected by a connector encircling the rim 132 of the two quadrants. The connector may be oval or may have another shape. Thus, the series of openings 136 form a conduit through which filtered liquid flows out of the filter.

The filter may further comprise a flushing mechanism comprising a set of multiple nozzles 108 connected to the common conduit 110 and receiving flushing liquid from the common conduit 110. The nozzles 108 and conduits 110 form a manifold. Each nozzle 108 may be an elongated tube having an orifice (not shown) near its distal end (the end facing away from the conduit 110), for example 0-3 cm from the distal end; the apertures may be formed in the side wall of the conduit such that fluid flows out of the apertures perpendicular to the length of the conduit or at an angle of 45 ° to 135 ° relative to the length of the conduit. Optionally, each nozzle 108 comprises two such orifices facing away from each other in the outer wall of the duct.

As described below, in some embodiments, the nozzle 108 is rotated by the motor 112 that rotates the outer cogwheel 124 and the motor 116 that rotates the inner cogwheel 120. The internal cogwheel 120 may be attached to the housing of the filter by three or more bearings 128. However, it should be understood that the nozzle 108 may be rotated using any other mechanism. Such as but not limited to chains, belts, rubbings, etc.

Referring now to fig. 2A, each cartridge 100 is formed of a plate 205 having supports or projections 204 thereon and is wrapped with threads 208 forming a filter medium or filter matrix. The thread 208 may be made of metal, plastic, fabric, or the like. The support 204 prevents the thread 208 from adhering to the plate 205, thereby providing space for filtered water to flow through. As the liquid flows on the cartridge from anywhere on the cartridge 100 towards the wide end 203, dirt or other particles to be filtered out are captured and retained between the wire loops, while the liquid flows through the plate 205 and around the support 204. The liquid eventually flows into the bore 212 and is discharged through the bore 216 into the opening 136 forming the outlet conduit.

Each cartridge 100 further includes an aperture 140 on either side of the wide end 203. When the filtration system is assembled, the rods are inserted through the respective holes 140 of each stack of cartridges 100, each belonging to a different disc, so that the discs are held tight to each other.

Each cartridge 100 may include notches 228 on either side of the wide end 203. When the filter is assembled, the rails are inserted through the notches 228 of the respective cartridges 100 of all the discs, and the ends of the rails are connected to the housing or drum of the filter, thereby placing the cartridges at their desired locations.

The liquid is passed through the filter media in a direction substantially perpendicular to the plane of the disc and substantially over the entire disc area. The flow then turns and liquid flows under the wire loops 208 and between the wire loops 208 such that particles are trapped between the wire loops. The filtered liquid is then diverted again into the conduit formed by the openings 136 and continues to be diverted parallel to the height of the drum and from there out of the filter.

Referring now to fig. 2B, a cross-section of the cartridge 100 is shown along with the direction of liquid flow. The liquid reaches the cartridge 100 in a direction substantially normal to the cartridge surface and flows substantially parallel to direction 212 over the cartridge surface between the wires 208 towards the wide end 203 of the cartridge. At wide end 203, liquid pours into opening 136 while again turning in a substantially orthogonal direction to hypothetical direction 216.

Reference is now made to fig. 2C, which shows the flow of liquid over two cartridges 100 and between two cartridges 100. The liquid reaches the cartridge 100 in a direction 224 substantially normal to the cartridge surface and flows over the cartridge surface between the wires 208 substantially parallel to direction 212 towards the wide end 203 of the cartridge. At wide end 203, liquid pours into opening 136 while again turning in a substantially orthogonal direction to hypothetical direction 216.

Referring now to fig. 3, a diagram of a disc of a filter is shown, in accordance with some exemplary embodiments of the disclosed subject matter. The tray 300 is made up of a plurality of cassettes 100 adjacent along sides 201 and 201' to form a circular array.

Referring now to fig. 4, a diagram of a tray with a flush mechanism is shown, in accordance with some exemplary embodiments of the disclosed subject matter.

The motor 116 rotates the cogwheel 400, which in turn rotates the outer cogwheel 120. The motor 112 rotates the internal cogwheel 124. The rotation of the external cogwheel 120 rotates the spray nozzles such that the spray nozzles spray cleaning solution, such as water, on all of the cartridges 100 of the two trays between which the spray nozzles 108 are located. The relative movement between the inner cogwheel 124 and the outer cogwheel 120 moves the nozzle head between the narrow end and the wide end of the cartridge 100. If the angular velocities of the outer cogwheel 124 and the inner cogwheel 120 are different, their combined motion will cause the end of the nozzle 108 to perform a helical movement, covering the entire area of the disc. This provides a uniform rinsing result or a stable linear velocity of the rinsing nozzle.

The cleaning liquid enters the filter and flows through conduit 110 into nozzle 108. The cleaning liquid then flows out together with dirt or other particles deposited on the wire loop 208.

Referring now to fig. 5, a diagram of a cross-section of a filter is shown, in accordance with some exemplary embodiments of the disclosed subject matter.

Fig. 5 shows a plurality of nozzles 108, each nozzle being arranged between two dishes such that each nozzle 108 sprays cleaning liquid on one side of each of the two dishes, except for the two extreme nozzles which spray only one side of one dish.

It should be understood that the inner cogwheel 124 and the outer cogwheel 120 may be placed inside or outside the drum of the filter. If the outer cogwheel 124 and the inner cogwheel 120 are outside the drum, they will not be immersed in water. This arrangement thus enables a wider variety of materials to be used for the manufacture of the cogwheel and its connecting shaft.

Referring now to fig. 6, a diagram of a tray of filters and its platform is shown, in accordance with some exemplary embodiments of the disclosed subject matter.

The system comprises a drum-like cylindrical housing comprising cylindrical covers (not shown) and covering the cartridges 100, wherein each set of cartridges 100 forms a disc.

As shown in fig. 6, the tray may be placed in an upright position within the system.

In some embodiments, motors 112 and 116 may be located outside of the filter, and the filter may be placed on platform 600.

Referring now to fig. 7, an inlet and an outlet of a filter of a filtration system according to some embodiments of the present disclosure are shown. The filter system is in a tray having a main cover 704 and a side cover 706. Liquid to be filtered may enter the filtration system through conduit 708, while filtered liquid may exit through conduit 712. Water or other flushing fluid may enter the filtration system at high pressure through conduit 716 and then exit through conduit 770.

Reference is now made to fig. 8A-8E, which illustrate an alternative flush mechanism. Other than this different flushing mechanism, the other components of the filter may be the same as discussed above. In this flush mechanism, in contrast to the flush mechanism discussed above, there are two manifolds instead of one.

With particular reference to fig. 8A, the first manifold includes a first set of nozzles 802a connected to a first common conduit 804a, and the second manifold includes a second set of nozzles 802b connected to a second common conduit 804 b. It is noted that in fig. 8A-8E, all nozzles except the most proximal nozzle are partially concealed between the cartridges. The conduits 804a-b may be connected at their proximal ends to a connector block 806, which in turn is connected to the chassis or frame of the filter (e.g., via a connection 810) by a pivot 808. The catheters 804a-b may be connected at their distal ends to a mechanism (not fully visible) configured to co-rotate the catheters about the central axis of the filter (in the space between the radially arranged cassettes) and to separately rotate each of the catheters about its own axis. 8A-8E each show two manifolds in different positions, with 804a-b in different stages of rotation about the central axis of the filter and about their own axis, so that the orifices (not shown) of nozzles 802a-b are in front of different points on the cartridge.

The use of two manifolds may enhance the efficiency of the flushing action of the filter and/or expedite the flushing of the filter.

The description of various embodiments of the present invention has been presented for purposes of illustration but is not intended to be exhaustive or limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the technology found in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

In the description and claims of this application, each of the words "comprising," "including," and "having" and forms thereof are not necessarily limited to members of the list with which the word is associated. In addition, where there is inconsistency between the present application and any of the documents incorporated by reference, the present application shall control.