DE202018104882U1 - Mehrfachsieb self-cleaning mechanism - Google Patents

Abstract

A linear displacement equalizer for self-cleaning multiple-mesh filtration devices, the linear displacement compensator comprising: a plurality of autonomous turbines; anda plurality of suspension arms, each connected to a pivot assembly at its distal end, each of the plurality of autonomous turbines being hinged to a different pivot assembly; wherein the linear displacement equalizer is sized and shaped to cooperate within a self-cleaning multi-wire filtration mechanism comprising a plurality of suction scanners for performing a self-cleaning operation of a plurality of screens of the self-cleaning multi-wire filtration apparatus, each of the plurality of autonomous turbines configured so in that it fits to a respective suction scanner and causes a respective rotation between a nozzle of the respective suction scanner and a screen of the plurality of screens.

Description

TECHNICAL PART

The present disclosure relates to the field of self-cleaning of filtration systems with multiple parallel screen elements in a filtration chamber.

BACKGROUND

One of the factors that determines the flow through a filter is the open area of the filter. During the filtration process, the open area tends to gradually decrease due to the accumulation of sieve soil in the pores of the filter media. Therefore, cleaning or replacement of the screen system of the filter is required whenever the open area of the filter becomes smaller than a required minimum.

The difference between the original open area of a filter and a minimum required open area may thus determine the number of productive hours of operation of the filter before replacement or cleaning may be required.

One way to increase the original open area of a screen-based filter per filtration chamber of a particular size is to place in the filtration chamber an array of parallel small screens whose entire open area is larger than that provided by the hypothetical use of a single large screen similar structure can be achieved.

It is therefore one of the objects of the present invention to provide efficient self-cleaning of the arrays of parallel screens.

SHORT SUMMARY

One aspect of the present invention is a linear displacement equalizer for self-cleaning multiple-mesh filtration devices, the linear displacement compensator comprising a plurality of autonomous turbines; and a plurality of suspension arms, each connected to a pivot assembly at a distal end thereof, each autonomous turbine of the plurality of autonomous turbines being hinged to another pivot assembly; wherein the linear displacement equalizer is configured in size and shape to cooperate in a self-cleaning multi-wire filtration mechanism comprising a plurality of suction scanners for performing a self-cleaning operation of a plurality of screens of the self-cleaning multi-wire filtration apparatus, each of the plurality of autonomous turbines is configured to mate with a respective suction scanner and cause a respective rotation between a nozzle of the respective suction scanner and a screen of the plurality of screens.

Optionally, the plurality of suspension arms are connected to and angularly spaced about a central pillar of the linear displacement compensator.

Optionally, the linear displacement compensator comprises a guide tip at an upper end of the central column.

Optionally, the linear displacement compensator comprises a guide tip at an upper end of the central column.

Optionally, the linear displacement compensator comprises a base plate having a central, upwardly extending projection, the central column having an interior cavity forming a tunnel, the tunnel being configured to mate with the central projection of the base plate Displacement equalizer unit, regardless of the fact that the base plate is immovably fixed in the self-cleaning multi-mesh filtration device, can move freely linearly with the tunnel sliding around the central projection.

Optionally, the linear displacement compensator comprises a base plate having a central, downwardly extending tunnel, the central column having a downwardly extending extension which is adapted to fit loosely to the central tunnel of the base plate, the displacement compensator unit being independent in that the base plate is immovably fixed in the self-cleaning multi-mesh filtration device, can move freely linearly with the downwardly extending extension that slides around the tunnel.

Optionally, the linear displacement compensator comprises: a plurality of vertical rails projecting upwardly away from the base plate from the central projection; and a plurality of stabilizing arms extending from and angularly spaced about the central pillar, the plurality of vertical rails serving as guide means for the plurality of stabilizing arms.

Optionally, the linear displacement compensator comprises a base plate and a spider-like upper portion, wherein the Spider-like upper portion includes the plurality of suspension arms.

Another aspect of the present invention is a multiple-wire self-cleaning mechanism, comprising: at least two parallel-aligned cylindrical screens, each of which includes a respective suction scanner, comprising: a main pipe and at least one nozzle; wherein each cylindrical screen shares a longitudinal axis with the main tube of the respective cylindrical screen, the at least one nozzle extending between the main tube and an inner surface of the respective cylindrical screen, the at least one nozzle providing fluid communication between each cylindrical screen and an interior of the main tube wherein each suction scanner is coupled to a respective autonomous turbine configured to rotate the main pipe about a common axis, whereby an inlet opening of the at least one nozzle is moved over the inner surface of the cylindrical screen, whereby the respective cylindrical screen during the self-cleaning operation the mechanism is scanned in rotation.

Optionally, the autonomous turbines are rotationally coupled together, thereby allowing each autonomous turbine to rotate at an individual angular velocity independent of the angular velocity of other autonomous turbines.

Optionally, the main tubes of the suction scanners are configured to linearly move during the self-cleaning operation of the mechanism, with each main tube moving in a direction along its longitudinal axis.

Optionally, the autonomous turbines can freely rotate the main tubes at an individual rotational speed while the suction scanners move in a linear manner, whereby the inlet openings of the nozzles respectively scan the inner surfaces of the respective cylindrical screens in individual spiral paths.

Optionally, a coupling between the suction scanner and a respective autonomous turbine includes a fluid delivery outlet of the main pipe which is individually opened into a central fluid receiving cavity of the autonomous turbine.

Optionally, each autonomous turbine includes a plurality of fluid diverter channels, wherein the plurality of autonomous turbine fluid diverter channels deviate from the central fluid receiving cavity with respective end portions of the plurality of channels which are either coherently clockwise or coherently counterclockwise in a first direction over radial lines from a rotational axis of the turbine, such that upon fluid flow from the inlet ports into the main tube through the common fluid receiving cavity of the turbine, fluid is discharged from the outlets of the fluid deflection channels in the first direction, thereby driving the turbine to move in a second direction Direction opposite to the first to turn.

Optionally, the autonomous turbines are coupled to a common linear displacement equalizer so that all the turbines and suction scanners move linearly in correlation with linear motion of the linear displacement compensator, independent of the individual rotational speeds of the turbines.

Optionally, the linear displacement compensator is coupled to a piston configured to control the amount and velocity of the linear displacement.

Optionally, the linear displacement compensator includes a plurality of motion guides configured to maintain linear movement of the stabilizer and prevent pivoting.

Optionally, the number of at least two parallel cylindrical screens is five.

Optionally, the number of at least two parallel aligned cylindrical screens is three.

Optionally, the at least two parallel aligned cylindrical screens comprise a central cylindrical screen and a plurality of cylindrical screens arranged with their longitudinal axes equidistant from a longitudinal axis of the central cylindrical screen.

list of figures

• 1 eine Darstellung einer isometrischen Ansicht im vertikalen Querschnitt einer beispielhaften Ausführungsform eines Saugscanners für den Einsatz in einem Mehrfachsieb-Selbstreinigungsmechanismus gemäß dem vorliegend offenbarten Gegenstand;
• 2A eine Darstellung einer isometrischen Ansicht im Halbschnitt (Viertelentnahme) eines Filtrationssystems mit einem Mehrfachsieb-Selbstreinigungsmechanismus gemäß dem vorliegend offenbarten Gegenstand, wobei der Selbstreinigungsmechanismus in der Ausgangsposition dargestellt ist;
• 2B eine Darstellung der isometrischen Ansicht im Halbschnitt (Viertelentnahme) von 2A, wobei der Selbstreinigungsmechanismus mit einer vorgegebenen Verschiebung aus der Ausgangsposition dargestellt ist;
• 2C eine Darstellung der Ansicht im Halbschnitt (Viertelentnahme) von 2A, wobei der Selbstreinigungsmechanismus mit einer vollständigen Verschiebung aus der Ausgangsposition dargestellt ist;
• 2D eine Darstellung einer vergrößerten isometrischen Ansicht eines Linearverschiebungsausgleichers gemäß dem vorliegend offenbarten Gegenstand;
• 3 eine Darstellung einer isometrischen Ansicht im Halbschnitt (Viertelentnahme) einer anderen Ausführungsform eines Filtrationssystems unter Verwendung des Mehrfach-Selbstreinigungsmechanismus gemäß dem vorliegend offenbarten Gegenstand, der Selbstreinigungsmechanismus ist in der Ausgangsposition dargestellt.

The present subject matter will be better understood and appreciated from the following detailed description, taken in conjunction with the drawings, in which like or similar numerals or characters refer to the same or the same components. Unless otherwise indicated, the drawings illustrate exemplary embodiments or aspects of the disclosure and do not limit the scope of the disclosure. In the drawings show:

• 1 FIG. 4 is a vertical cross-sectional isometric view of an exemplary embodiment of a suction scanner for use in a multiple-wire self-cleaning mechanism according to the subject-matter disclosed herein; FIG.
• 2A a representation of an isometric view in half section (Viertelentnahme) of a filtration system with a multiple-screen self-cleaning mechanism according to the presently disclosed subject matter, wherein the self-cleaning mechanism is shown in the starting position;
• 2 B a representation of the isometric view in half section (quarter removal) of 2A wherein the self-cleaning mechanism is shown with a predetermined displacement from the home position;
• 2C a representation of the view in half section (quarter removal) of 2A wherein the self-cleaning mechanism is shown with a complete shift from the home position;
• 2D a representation of an enlarged isometric view of a Linearverschiebungsgleichgleichers according to the presently disclosed subject matter;
• 3 a representation of an isometric view in half section (quarter removal) of another embodiment of a filtration system using the multiple self-cleaning mechanism according to the subject-matter disclosed herein, the self-cleaning mechanism is shown in the starting position.

DETAILED DESCRIPTION OF THE FIGURES

1 shows in a cross-sectional view of a suction scanner 100 for use in a multiple-wire self-cleaning mechanism according to the subject matter disclosed herein. The cross section can be along the longitudinal axis 111 be taken of the suction scanner. During the self-cleaning mode of a filtration system comprising the mechanism, a plurality of suction scanners may be used 100 each about their axis 111 rotate. The rotation can be driven by a turbine, such as the turbine 280 in 2A (not shown), or any other mechanical assembly configured to convert kinetic energy extracted from the flow of the drain fluid into rotation of the suction scanners. The turbine can with the suction scanner at the top of a main pipe 101 be coupled to the scanner. The main pipe 101 can grooves or slots 117 have, which facilitate and improve the coupling with the turbine. In some embodiments, the suction scanner may 100 through its nozzles 102 sucked fluid into the interior 101s of the main pipe 101 of the suction scanner 100 enter. The fluid may be at an upper opening 108 of the main pipe 101 be directed. From the upper opening 108 For example, the fluid may pass through the turbine thereby causing the turbine to rotate causing the main tube 101 is turned.

In some example embodiments, upon rotation of the main pipe 101 around the longitudinal axis 111 respective sections on the inside of the cylindrical screen 220 (not shown) from the inlet openings 104 the nozzles 102 be scanned, wherein the accumulated dirt on the screen is sucked by generating a backflow through the screen.

In some embodiments, the scan path may be followed by the inlet openings 104 , become spiral when the suction scanner 100 simultaneously with this rotation linear in the direction of the axis 111 emotional. The suction scanner can be an extended axle 110 include, which is below a lower end 101b of the main pipe 101 extends. The extended axle element 110 can through a ring-like opening of a bearing 210 located at a lower end of the cylindrical screen 220 is located. The extended axle element 110 is able to maintain the rotational movement while being linearly displaced by the bearing.

2A to 2C show a view in half section (quarter removal) of a filtration system 299 with a multiple self-cleaning mechanism 250 according to an embodiment of the presently disclosed subject matter.

A suction scanner 200 is inside a cylindrical sieve element 220 shown, both a common longitudinal axis 211 share. The cylindrical sieve element 220 can a support frame, z. B. a rigid cage-like (basket) frame (not shown), to reinforce the Siebelementkonstruktion to a desired degree of rigidity. In some example embodiments, a porous medium having a hollow cylindrical contour may be the cylindrical screen 220 forms to be used on an inner side of the frame.

In some embodiments, during the filtration mode of operation of the filtration system 299 the suction scanner 200 in its lowest position within the sieve element 220 are as in 1A shown. Similarly, additional suction scanners 200 , which are in the respective additional sieve elements 220 be located in their lowest position. In this position (eg the lowest position), the extended axle element can 210 of the main pipe 201 by an annular opening formed by an annular bearing (eg a support and a guide for rotation or longitudinal displacement of the axle element 210 ) is formed, which is near the bottom of the sieve element 220 is completely down. In the lowest position, a lower end (like 101b in 1 ) of the main pipe 201 on the top of the warehouse 220b rest. From this lowest position, the suction scanner 200 begin, the inner surfaces of the respective cylindrical sieves 220 as soon as the filtration system 299 goes into a self-cleaning mode.

In the illustrated embodiment, the filtration system comprises 299 five parallel sets of cylindrical sieves 220 of which four are shown (the right in cross-section) and the fifth in which to expose the interior of the filtration chamber 230 cutaway section is included. Additionally or alternatively, the filtration system 299 a different number of parallel sets of cylindrical screens 220 include, such as three, four, seven or the like.

In some example embodiments, the filtration chamber 230 a main fluid inlet 231 (supplied by the fluid to be filtered from a main conduit) and a main fluid outlet 232 through which filtered fluid exits the system. Between the main fluid inlet 231 and each of the cylindrical sieves 220 can each have a coarse filter 227 be provided. The inner wall 229 can the filtration chamber 230 separate from the inlet space in which the coarse sieves 227 located so that the fluid connection between the fluid inlet 231 and the fluid outlet 232 only over the sieves 220c he follows. The wall 229 can be contoured so that they are the sieves 220 and the coarse strains 227 supports and holds in predetermined positions within the filtration chamber.

In some exemplary embodiments (particularly useful when a filtration system operates under a very low fluid supply pressure), if the filtration system 299 enters a self-cleaning mode, the fluid inlet is fully or partially closed (such as by an external valve, not shown), and a dirt outlet port 260 (only part of which is shown as part of the removed quarter image due to removal of its remaining structure) may be opened to drain, thereby increasing the fluid pressure in the rinse mix chamber 240 is reduced to a pressure value which is satisfactorily below the pressure value of the clean fluid in the outside of the cylindrical sieves. This pressure differentiation can be efficient backflow through the sieves 220 (even when operating at a low fluid supply pressure) are generated, ie from the clean fluid side of the sieves in the Spülmischkammer 240 which causes the sieves 220 be flushed back through the suction scanners.

In some example embodiments, the direct fluid flow from the filtration chamber 230 to the Spülmischkammer 240 through an intermediate separating base plate 241 to be interrupted. In various embodiments of the disclosed subject matter, the rinse fluid mixing chamber may be separable from the filtration chamber, e.g. B. for maintenance purposes. The base plate may be within a in the separation area between the chamber 240 and the chamber 230 formed circumferential groove 247 be immovably fixed. The chamber 240 , the chamber 230 and the base plate 241 can be interconnected by a clamp and a respective clamping bolt. The clamp can be attached to the outer annular projections 248 be attached and hold them together. The base plate 241 Can also be used as top cover for the cylindrical sieve elements 220 serve.

In some example embodiments, the fluid communication may be between the clean fluid in the outside of the cylindrical sieves 220 and the Spülmischkammer 240 thus be released only in the self-cleaning path.

The self-cleaning path can begin with clean fluid passing through the sieves 230 is sucked into the suction scanner while dirt from the screen into the nozzles 202 the suction scanner is removed. The fluid may then pass from fluid outlets of the suction scanners into fluid deflection channels (in FIG 2D With 280c referred to) in the turbines 280 are formed and their fluid outlets to the Spülmischkammer 240 are open, exit.

By flowing through the turbines, the fluid streams can produce respective rotational thrusts that rotate the turbines and the suction scanners with the nozzles 202 , where the nozzles 202 the inner surfaces of the sieves 220 scan in rotation.

Advantageously, the rotation of each turbine 280 regardless of the rotation of the other turbines. This is because each turbine is autonomous, ie not engaged with the other turbines. In some example embodiments, each turbine may be free on a respective arm 271 a common arachnoid Linearverschiebungsgleichgleichers 270 be articulated. In such a configuration each turbine is autonomous and thus can rotate at an individual speed.

In some example embodiments, the suspension arms 271 with a central pillar 272 of the linear displacement compensator 270 be connected and angularly spaced around this. The central pillar 272 can be attached to a shaft 290s a common piston 290p that by a cylinder 291 is movable, be coupled. During the filter operating mode, fluid in the cylinder may 291 be held (the fluid can via a control line (not shown) connected to a control terminal 294 connected to the upper end of the cylinder). That in the cylinder 291 Held fluid prevents the turbines and the suction scanner 200 in the 1A exit linear output position during filter operating mode.

In some example embodiments, the linear displacement of the suction scanner may 200 along the respective longitudinal axes 211 the pressure in the control line below the fluid pressure within the suction scanner 201 be reduced, so that the pressure differentiation across the turbines 280 sufficient to the Linearverschiebungsausgleicher 270 against the shaft 290s to push the piston and thus the piston 290p in the cylinder 291 to slide, with the suction scanner each along its longitudinal axis 211 move linearly together and at the same time according to the rotation of the respective turbines 280 rotate.

2 B shows the self-cleaning mechanism with a predetermined linear displacement from the home position, the displacement shown was chosen arbitrarily as an example of a partial linear displacement. The extended axis 210 of the suction scanner 201 Can be partially from the ring bearing 220b be pulled out according to the amount of linear displacement

2C illustrates the self-cleaning mechanism with a complete shift from the home position. The extended axis 210 of the suction scanner 201 can almost completely out of the ring bearing 220b be pulled out.

2D illustrates an enlarged isometric view of a Linearverschiebungsgleichgleichers 270 according to the presently disclosed subject matter.

The linear offset compensator 270 can be a central pillar 272 include. The central pillar 272 can with a shaft (in 2A with 290s) of a common piston ( 290p) through the coupling guide tip located at the upper end of the central pillar 275 be coupled. A plurality of suspension arms 271 can with the central pillar 272 connected and angularly spaced therefrom. A corresponding plurality of turbines 280 can be near a distal end of the respective arm 271 by means of a pivoting arrangement 271h be articulated. The pivot assembly may include a pivot pin projecting from either the turbine or the suspension arm and forming a rotational axis of the turbine, and a mating pivot opening or mating hole formed in the pivot-facing portion forming a journal bearing. In various embodiments of the disclosed subject matter, the pivot pin projects downwardly from the suspension arm into a pivot bore formed in the center of the turbine. In other various embodiments, the pivot pin projects upwardly from the center of the turbine shell into a pivot hole formed in the bottom of the hinge arm. In various embodiments of the disclosed subject matter, the spigot and pivot bore have a snap-fit mutual connection adapted to permit free rotation of the respective pin and bore while preventing inadvertent removal of the spigot from the bore. In other various embodiments of the disclosed subject matter, the pin and the pivot bore are freely separable.

In some example embodiments, the central column may 272 an inner cavity forming a tunnel, the tunnel being configured to become loose to a central projection 242 that is different from the base plate 241 extends upwards, fits. While the base plate 241 immovable in the filtration system 299 is fixed, z. B. with her within the circumferential groove 247 fixed scope (see 2A), e.g. , B. by a clamp, the outer annular projections 248 holds together, thus the displacement equalizer unit 270 move freely linearly with the tunnel displaced around the central projection (depending on the fluid pressures in the filtration system). The linear motion of the displacement equalizer unit 270 can be further stabilized by a guide arrangement configured to provide angular deviation (pivoting) of the displacement compensator unit 270 prevents and only allows it to move linearly. In the illustrated embodiment, the guide deviation configuration for preventing the angular deviation includes a plurality of vertical raceways 244 away from the base plate away from the central projection 242 project upwards. The vertical tracks 244 may be used as guide means for a respective plurality of stabilizing arms 273 serve, extending from the central pillar 272 extending and angularly spaced therefrom, wherein the angular distances from the suspension arms 271 are the same.

In some example embodiments, the central column may 272 have a downwardly extending extension which fits loosely into a central downwardly directed tunnel formed in the base plate.

While the base plate in the filtration system 299 immovably fixed, z. B. within the circumferential groove 247 is fixed (see 2A) Thus, the displacement equalizer unit can become 270 move freely linearly, with the downward extension within the tunnel (depending on the fluid pressures in the filtration system) is moved.

In some example embodiments, the base plate may be 241 further through openings 241h each with respect to both their position and with respect to their inner diameter to the position and the outer diameter of a respective main pipe 201 a suction scanner 202 fit. The suction scanners can thus be freely linear along their longitudinal axes 211 through the openings 241h up and down to a predetermined extent as a function of the fluid pressures in the filtration system 299 move. The openings 241h can get into the main pipes 201 to allow linear movement of the tubes through the apertures and rotation of the tubes (in turbine rotation) while preventing (or substantially minimizing) fluid passage. The openings 241h can be provided with ring seals to optimize the fit. The main tubes of the suction scanners can be dimensioned longitudinally so that, when the displacement compensator unit 270 in its initial position within the Spülfluidmischkammer 240 is located as in 2A shown, upper sections of the main pipes 201 each through the openings 241h extend, and each with a lower tube segment 280b a respective turbine 280 be coupled. The lower pipe segment 280b may comprise at least one projection which is formed so that it in the respective groove (see groove 117 from 1 ) engages at or near the top of the respective suction scanner.

In various embodiments of the disclosed subject matter, the main tubes 201 the suction scanner 200 in their upper sections along the entire longitudinal tube extension, which is intended to pass through the openings 241h to move (such sections are also free of nozzles 202 ), have a uniform predetermined outer diameter. Portions of the main pipe below this extension may have different (either predetermined or varying) outer diameters and may include one or more nozzles 202 include.

3 Fig. 10 shows an isometric view in half section (quarter removal) of another embodiment of the filtration system using the multiple wire self-cleaning mechanism 350 According to the presently disclosed subject matter, the self-cleaning mechanism is shown in the home position with the axis 310 of the main pipe 301 completely through the warehouse 320b is introduced. The filtration system 399 may be different from the filtration system 299 differ in that the main outlet 332 at right angles to the wall of the filtration chamber 330 is aligned. The filtration system 399 may thus be suitable for a larger flow rate main and be formed with a flat bottom. The flat floor can be used to support the system on a horizontal concrete base.

In some example embodiments, upstream and downstream main pipe segments may be in the filtration system 399 approach from the same direction when the main inlet 331 and the main outlet 332 are positioned as shown. However, the system can be flexibly adapted to upstream and downstream main pipe segments that approach from different directions by moving the clamp of the inlet unit (not shown) to the annular protrusions 348 is attached and these together) is simply solved, the inlet 331 is pivoted in the desired direction and the terminal is attached again.

Additionally or alternatively, other parts of the filtration systems, e.g. B. the self-cleaning mechanism 350 , the contoured interior wall 329 , the flushing fluid mixing chamber 340 , the cylinder 391 and the piston 390P , equivalent elements correspond to those in the 2A to 2D illustrated embodiment with 250 . 229 . 240 . 291 respectively. 290p are designated.

It is therefore important to note that the self-cleaning mechanism 250 can be easily adapted to filtration systems that differ in their size and capacity, without departing from the scope of the disclosed subject matter.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the disclosed subject matter. As used herein, the singular forms "a, a" and "the" are meant to include plurals, unless the context clearly indicates otherwise. It is further understood that the terms "comprising" and / or "comprising" as used in this specification indicate the presence of indicated features, integers, steps, operations, elements and / or components, but not the presence or addition of one or more of excludes several other features, integers, steps, operations, elements, components, and / or groups thereof.

The corresponding structures, materials, acts, and equivalents of all means or steps plus functional elements in the appended claims are intended to encompass any structure, material, or act of performing the function in combination with other claimed elements as expressly claimed. The description of the subject matter disclosed has been presented for purposes of illustration and description, but is not intended to be exhaustive or limited to the disclosed subject matter in the form disclosed. Numerous modifications and changes will be understood by those of ordinary skill in the art without departing from the spirit and scope of the disclosed subject matter. The embodiment has been chosen and described in order to best explain the principles of the disclosed subject matter and practical application, and to enable those of ordinary skill in the art to understand the disclosed subject matter for various embodiments with various modifications as appropriate to the particular application.

In summary, a linear displacement equalizer is provided for self-cleaning multiple-mesh filtration devices comprising autonomous turbines. Each autonomous turbine is hinged to a different pivot assembly. The linear displacement equalizer is configured to interact within a filtration mechanism that includes a suction scanner. Each autonomous turbine is configured to operate with a respective suction scanner and a respective rotation between a nozzle of the respective suction scanner and a sieve. Another aspect is a multiple-screen self-cleaning mechanism comprising at least two parallel-aligned cylindrical screens, each having a respective suction scanner. Each suction scanner is coupled to a respective autonomous turbine configured to rotate the main pipe about a common axis, thereby moving an inlet opening of a nozzle of the suction scanner over the inner surface of the cylindrical screen, whereby the respective cylindrical screen is operated during the self-cleaning operation of the Mechanism is scanned rotationally.

Claims (19)

Linear displacement compensator for self-cleaning multi-mesh filtration devices, the linear displacement compensator comprising: a plurality of autonomous turbines; and a plurality of suspension arms, each connected to a pivot assembly at its distal end, each of the plurality of autonomous turbines being hinged to a different pivot assembly; wherein the linear displacement equalizer is sized and shaped to cooperate within a self-cleaning multi-wire filtration mechanism comprising a plurality of suction scanners for performing a self-cleaning operation of a plurality of screens of the self-cleaning multi-wire filtration apparatus, each of the plurality of autonomous turbines configured so in that it fits to a respective suction scanner and causes a respective rotation between a nozzle of the respective suction scanner and a screen of the plurality of screens. Linear displacement compensator according to Claim 1 wherein the plurality of articulated arms are connected to and angularly spaced about a central pillar of the linear displacement compensator. Linear displacement compensator according to Claim 2 which comprises a guide tip at the upper end of the central column. Linear displacement compensator according to Claim 2 further comprising a base plate having an upwardly extending central protrusion, the central pillar having an internal cavity forming a tunnel, the tunnel being adapted to loosely fit the central protrusion of the base plate, whereby Displacement equalizer unit, regardless of the fact that the base plate is immovably fixed in the self-cleaning multi-strainer filtration device, free to move linearly with the tunnel that slides around the central projection. Linear displacement compensator according to Claim 2 , further comprising a base plate having a central, downwardly extending tunnel, the central column having a downwardly extending extension adapted to loosely fit the central tunnel of the base plate, the displacement compensator unit being independent thereof in that it is immovably fixed in the self-cleaning multi-wire filtration apparatus, free to move linearly with the downwardly extending extension sliding around the tunnel. Linear displacement compensator according to Claim 2 , further comprising: a plurality of vertical rails projecting upwardly away from the base plate from the central projection; a plurality of stabilizer arms extending from and angularly spaced about the central pillar, whereby the plurality of vertical rails serve as guide means for the plurality of stabilizer arms. Multiple-sieve linear displacement compensator according to Claim 1 comprising a base plate and a spider-like upper portion, wherein the spider-like upper portion comprises the plurality of hinge arms. Multiple-sieve self-cleaning mechanism, comprising: at least two parallel aligned cylindrical screens, each comprising a respective suction scanner comprising a main tube and at least one nozzle; each cylindrical screen dividing a longitudinal axis with the main tube of the respective cylindrical screen, the at least one nozzle extending between the main pipe and an inner surface of the respective cylindrical screen, the at least one nozzle providing fluid communication between the respective cylindrical screen and an interior of the main pipe, wherein each suction scanner is coupled to a respective autonomous turbine configured to rotate the main pipe about a common axis, whereby an inlet opening of the at least one nozzle is moved over the inner surface of the cylindrical screen, whereby the respective cylindrical screen during the self-cleaning operation the mechanism is scanned rotationally. Multiple-sieve self-cleaning mechanism after Claim 8 wherein the autonomous turbines are rotationally coupled to each other, thereby allowing each autonomous turbine to rotate at an individual angular velocity independent of the angular velocity of other autonomous turbines. Multiple-sieve self-cleaning mechanism after Claim 8 wherein the main tubes of the suction scanners are adapted to linearly move together during the self-cleaning operation of the mechanism, each main tube moving in a direction along its longitudinal axis. Multiple-sieve self-cleaning mechanism after Claim 10 with the autonomous turbines being free, the main tubes rotating at a single rotational speed each as the suction scanners move linearly together, whereby the inlet ports of the nozzles scan the inner surfaces of the respective cylindrical screens in individual spiral tracks. Multiple-sieve self-cleaning mechanism after Claim 8 wherein a coupling between the suction scanner and a respective autonomous turbine includes a fluid delivery outlet of the main tube that is individually opened into a central fluid receiving cavity of the autonomous turbine. Multiple-sieve self-cleaning mechanism after Claim 12 wherein each autonomous turbine comprises a plurality of fluid deflection channels, the plurality of autonomous turbine fluid deflection channels deviating from the central fluid receiving cavity, the respective end portions of the plurality of channels being in a first direction either coherently clockwise or coherently counterclockwise via radial lines, which are inclined from an axis of rotation of the turbine, are inclined so that fluid is discharged from the inlet openings into the main pipe through the common fluid receiving cavity of the turbine fluid from the outlets of Fluidumlenkkanäle in the first direction, whereby the turbine is driven, in a second Direction opposite to the first to turn. Multiple-sieve self-cleaning mechanism after Claim 8 wherein the autonomous turbines are coupled to a common linear displacement equalizer such that all of the turbines and suction scanners move linearly in correlation with the linear motion of the linear displacement compensator regardless of the individual rotational speeds of the turbines. Multiple-sieve self-cleaning mechanism after Claim 14 wherein the linear displacement compensator is coupled to a piston configured to control the amount and velocity of the linear displacement. Multiple-sieve self-cleaning mechanism after Claim 14 wherein the linear displacement compensator comprises a plurality of motion guides configured to maintain the linear motion of the stabilizer and prevent pivoting. Multiple-sieve self-cleaning mechanism after Claim 8 , wherein the number of at least two parallel-aligned cylindrical sieves is five. Multiple-sieve self-cleaning mechanism after Claim 8 , wherein the number of at least two parallel-aligned cylindrical sieves is three. Multiple-sieve self-cleaning mechanism after Claim 8 wherein the at least two parallel-aligned cylindrical screens have a central cylindrical screen and a plurality of cylindrical screens, with their longitudinal axes equidistant from a longitudinal axis of the central cylindrical screen are arranged.

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