USRE31792E - Filter with automatic cleaning - Google Patents

Filter with automatic cleaning Download PDF

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Publication number
USRE31792E
USRE31792E US06/383,096 US38309682A USRE31792E US RE31792 E USRE31792 E US RE31792E US 38309682 A US38309682 A US 38309682A US RE31792 E USRE31792 E US RE31792E
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US
United States
Prior art keywords
carriage
sprinkling
frame
actuating lever
fluid inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/383,096
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English (en)
Inventor
Pierre Colomer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Interfiltre SA
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Interfiltre SA
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Filing date
Publication date
Application filed by Interfiltre SA filed Critical Interfiltre SA
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Publication of USRE31792E publication Critical patent/USRE31792E/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours

Definitions

  • the present invention relates to an improvement in self-cleaning filters and particularly in filters cleaned periodically by a movable sprinkling device.
  • a sprinkling device comprising a sprinkling tube connected to a cleaning liquid distributing circuit and a carriage jointly movable with the sprinkling tube and adapted to perform a to-and-fro movement along the filter or filters to be cleaned while being supported by a transverse support.
  • a rotary hydraulic motor is mounted on the carriage to ensure the movement of the latter. The motor is fed by the cleaning liquid distributing circuit and, more precisely, it is mounted in series with the tube in the said circuit.
  • the said device which has proved itself to be particularly advantageous, may however be subject to some restriction in its use in the case of particularly important filter installations, for such installations require high power and therefore more bulky motors.
  • the purpose of the present invention is to provide a novel design of the above-described device, characterized by considerable power combined with a particularly compact form.
  • the invention relates to a filter with automatic cleaning of the type provided with a frame on which are mounted filtering panels, a sprinkling device comprising at least one sprinkling tube connected to a circuit for distributing a cleaning circuit, such as in particular water, and a carriage jointly movable with the tube and adapted to perform a to-and-fro movement along the filtering panel or panels to be cleaned while being supported on a transverse rail support, the said carriage being displaced by traction means with a hydraulic motor, characterized in that the said hydraulic motor traction means for the said carriage are constituted by a hydraulic double-acting actuator secured to the frame, driving the said carriage through the medium of a transmission member and in that the working chambers of the hydraulic actuator are selectively connected to the cleaning liquid in the distributing circuit through the medium of a switching system.
  • the transmission member connecting the hydraulic actuator to the carriage is constituted by at least one tackle system associated with the movable portion of the actuator.
  • the actuator which is used as a hydraulic motor provides high power.
  • the actuator is characterized by its sturdiness and therefore confers high reliability to the whole device.
  • the use of a hydraulic motor secured to the frame of the filter allows all mechanical problems, counterbalancing problems and inertia problems, which arise in case of use of a motor secured to a movable carriage, to be solved. Such problems are all the more important as the size of the motor used is greater.
  • the device according to the invention is therefore particularly stable.
  • reduction means such as a tackle system, imparts to the means ensuring the displacement of the carriage a structure that allows them to be accommodated within a reduced volume.
  • FIG. 1 is a general perspective view, partially broken away, of a filtering case with automatic cleaning according to a first form of embodiment of the invention
  • FIG. 2 is a general perspective view, partially broken away, of a filtering case with automatic cleaning according to a second form of embodiment of the invention
  • FIG. 3 shows a switching mechanism used in the filtering case of FIG. 2.
  • FIG. 1 a filtering case composed essentially of a frame 1 of generally rectangular parallelepiped shape, the two mutually opposite main faces of which are open to allow the passage of air.
  • a baffle system (not shown) compels the air flowing in, for example, through the rear face of the case (when looking at the Figure) to pass through the filtering panels from bottom to top and then out through the front face.
  • the apparatus is provided with a sprinkling device 3 constituted by two sprinkling tubes 4 provided with nozzles 4a directed towards the filtering panels 2.
  • the tubes 4 are connected at their upper portion to a driving carriage 5 rolling through the medium of rollers 6 on a transverse rail support 7.
  • the carriage 5 is provided on its upper portion with an arm 8 and at each of its ends with a push-member 9.
  • a fluid-operated double-acting actuator 10 is secured to the upper portion of the frame 1.
  • the actuator has a piston 12 to which are connected two rods 13 and 14 extending each beyond the corresponding end of the actuator body.
  • the member for transmitting the movement of the actuator to the carriage is constituted here by two tackle systems.
  • Each of the tackle systems comprises a first sheave 15 mounted in a block secured to the frame 1 of the filter and a second sheave 16 mounted at the end of each of the actuator rods.
  • the tackle systems include a common transmission cable 17 connected to the movable carriage 5 through the medium of the arm 8.
  • the actuator 10 is connected to the cleaning liquid distributing system through the medium of two off-take pipes 18 and 19 opening into each of the actuator working chambers, respectively.
  • Each of the said off-take pipes is preferably provided with a needle valve 20a and 20b, allowing the flow of liquid into the working chambers of the actuator and therefore the speed of displacement of the piston 12 thereof to be controlled.
  • the cleaning liquid distributing circuit comprises two independent branch pipes 21 and 22, each feeding a sprinkling tube 4 and an off-take pipe 18 or 19. Both branch pipes include a rigid pipe portion 21a and 22a and a flexible pipe portion 21b and 22b allowing for the displacement of the tubes 4 together with the carriage 5.
  • Each of the branch pipes of the cleaning liquid distributing circuit includes an electrically controlled valve 23a,23b.
  • the transverse support 7 on which the carriage 5 moves is provided with two microcontacts 24a,24b. These are located on the transverse support at a point corresponding to the end of the travel of the carriage and its to-and-fro movement on the support 7.
  • the said microcontacts control the closing and opening of each of the electrically controlled valves 23a and 23b.
  • the valve 23a is open and the valve 23b is closed.
  • the needle valves 20a and 20b have previously been adjusted according to the desired speed of the sprinkling device.
  • the cleaning liquid therefore enters the branch pipe 21 and then flows through the off-take pipe 18 into one of the actuator working chambers and through the flexible pipe 21b into one of the sprinkling tubes 4.
  • the cleaning liquid entering the actuator 10 pushes the piston 12 towards the right (in the Figure).
  • the movement of the piston 12 is transmitted to the carriage 5 through the medium of the arm 14, the sheaves 15 and 16 and the cable 17.
  • the carriage 5 is therefore driven towards the left along the transverse support 7.
  • the cleaning liquid is projected by the nozzles 4a onto the panels 2.
  • a conduit 25 located in the low portion of the frame allows the cleaning liquid to be discharged together with the impurities borne along thereby.
  • the two tubes mounted on the carriage 5 are spaced apart by a distance equal to half the length of the filtering panels 2 to be swept.
  • the effective travel of the actuator may correspond to a quarter of the said length.
  • FIG. 2 illustrates a second form of embodiment of the invention.
  • the purpose of this second form of embodiment is to dispense with any electrical element within the frame, thus obviating any risk of contact of the electrical elements with water within the frame. Doing away with all such elements ensures safer operation of the device.
  • FIG. 2 there is seen a filtering case similar to that of FIG. 1 and comprising in particular a frame, filtering panels, a hydraulic double-acting actuator and a tackle system for displacing a carriage carrying two sprinkling tubes.
  • a filtering case similar to that of FIG. 1 and comprising in particular a frame, filtering panels, a hydraulic double-acting actuator and a tackle system for displacing a carriage carrying two sprinkling tubes.
  • These elements are identical with those of the device of FIG. 1 and are designated in FIG. 2 by the same reference numerals.
  • the two sprinkling tubes 4 are interconnected by a common conduit 30.
  • the cleaning liquid distributing circuit comprises a common branch pipe 31, one portion 31a of which may be rigid and a portion 31b is flexible and connected to the conduit 30 through the medium of a three-way valve 32.
  • the three-way valve has two outlets, each connected to a tube 4, respectively, and an inlet connected to the cleaning liquid distributing circuit.
  • the valve 32 is provided with an actuating lever 33 allowing the valve to be so controlled as to cause the cleaning liquid to pass at one time through one of the sprinkling tubes 4 and at another time through the other.
  • two off-take pipes 34a and 34b each preferably provided with a needle valve 35a,35b connect the conduit 30 with each of the working chambers of the actuator 10.
  • the cleaning liquid distributing circuit may also be provided with an electrically controlled valve 36 located just before the inlet of the liquid into the frame.
  • the switching mechanism is constituted by two symmetrical assemblies 37a, 37b secured to the frame and which, in particular, may be fastened to the latter on the transverse rail support 7 on which moves the carriage 5. These assemblies are located substantially at the ends of the travel of the valve 32 and more particularly of its actuating lever 33.
  • the valve 32 mounted on the conduit 30 and provided with its actuating lever 33.
  • the following description of the switching assembly 37b may of course apply to the assembly 37a, since the two assemblies are perfectly symmetrical.
  • the assembly 37b is composed of a plate 38 secured to the support 7, e.g. by means of screws 39.
  • the assembly also comprises a cam 40 composed of a positive guiding portion 40a and a free escape portion 40b. In FIG. 3, the region separating these two portions is denoted by the letter A.
  • the cam is so arranged that towards the end of the travel of the lever 33, the latter comes into contact with the cam along the positive guiding portion, possibly through the medium of a pin 44.
  • the switching assembly 37b also comprises an energy accumulator provided with a loading member placed on the portion of the path of the actuating lever corresponding to the engagement of the latter with the positive guiding portion of the cams.
  • the said energy accumulator may be located at the lower end of the plate 38 and may be constituted by a spring 41 accommodated in a sleeve 42. One of the ends of the spring 41 abuts against one of the ends of the sleeve 42.
  • the loading member may consist of a rod 43 connected with the free end of the spring and slidingly mounted in the other end of the sleeve. The rod 43 protrudes along the aforesaid travel portion illustrated in FIG. 3 by the full line C.
  • the cam 40 may be constituted by two raised edges 40c, 40d defining a curved guiding groove, the free escape portion 40b extending in prolongation of the positive guiding portion 40a.
  • the guiding portion 40a extends in a direction substantially perpendicular to that of the travel of the valve which is represented by the dot-and-dash-line B--B.
  • the free escape portion 40b extends in a direction substantially parallel with that same travel.
  • the needle valves 35a and 35b are preadjusted so as to adjust the carriage displacement speed.
  • the actuating lever of the valve 32 to be turned to the right (when looking at FIG. 2)
  • the cleaning liquid passes from the pipe 31 into the right-hand tube and the take-off pipe 34b.
  • the carriage 5 moves towards the right.
  • the lever 33 contacts the switching element 37b
  • the lever 33 is in the position shown in full lines in FIG. 3.
  • the lever is in engagement with the positive guiding portion 40a of the cam and rests upon the edge 40c of the latter.
  • the lever comes into contact with the rod 43.
  • the switching element 37a operates in an altogether symmetrical manner when the lever reaches its level.
  • Such a switching mechanism is particularly simple and allows the lever 33 to be prevented from remaining in a vertical position which would result in cutting off the supply of the actuator and stopping the movement.
  • Oblong fastening openings 45 may advantageously be provided to allow the position of the plates 38 at the end of the travel to be accurately adjusted.
  • the filtering panels are arranged horizontally on the frame. This is an advantageous arrangement for it reduces the splashing along the walls of the frame during the operation of the sprinkling device.
  • the filtering panels it would be quite possible to arrange the filtering panels with a certain inclination.
  • a form of embodiment may be contemplated, although less advantageous, including a single sprinkling tube driven by a single tackle system, with a system such as a counterweight system provided to ensure the movement of the sprinkling device in the opposite direction.
  • a system such as a counterweight system provided to ensure the movement of the sprinkling device in the opposite direction.
  • the use may also be contemplated of an actuator with a movable body and a stationary piston secured to the frame of the installation.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Nozzles (AREA)
US06/383,096 1979-06-18 1982-05-28 Filter with automatic cleaning Expired - Lifetime USRE31792E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7915581 1979-06-18
FR7915581A FR2459070A2 (fr) 1979-06-18 1979-06-18 Filtre a nettoyage automatique

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US06/075,791 Reissue US4285353A (en) 1979-09-14 1979-09-14 Filter with automatic cleaning

Publications (1)

Publication Number Publication Date
USRE31792E true USRE31792E (en) 1985-01-08

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ID=9226746

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/383,096 Expired - Lifetime USRE31792E (en) 1979-06-18 1982-05-28 Filter with automatic cleaning

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US (1) USRE31792E (enExample)
FR (1) FR2459070A2 (enExample)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6390106B1 (en) * 1999-10-29 2002-05-21 Au Optronics Corp. Multidirectional liquid sprayer used in a wet process
US6453918B2 (en) * 1998-07-16 2002-09-24 Car-Tec Company Safety and environmental workbench
US6666038B1 (en) 2002-09-13 2003-12-23 Richard A. Hynes Air conditioning system including liquid washdown dispenser and related methods
US20100032388A1 (en) * 2007-02-21 2010-02-11 Hydrotech Veolia Water Systems Aktiebolag Device and Method for Cleaning a Filter Cloth
US20100108620A1 (en) * 2008-10-30 2010-05-06 Fruit Growers Supply Company Dual side cleaning and traversing screen filtration system
US20210387114A1 (en) * 2018-11-05 2021-12-16 Ishigaki Company Limited Filter cloth cleaning method of filter press
CN115445339A (zh) * 2022-09-22 2022-12-09 江苏鑫润冶金机械制造有限公司 一种链篦机回转窑球团焙烧烟气处理系统及处理方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3775950A (en) * 1970-07-06 1973-12-04 A Hallamore Process air automatic self-cleaning air filtration system
US3780747A (en) * 1971-04-21 1973-12-25 Abel Pumpen Masch Apparatus for cleaning filter plates and the like
US3826374A (en) * 1972-06-02 1974-07-30 Passavant Werke Apparatus enabling the shifting of groups of filter plates in a filter press
US4076033A (en) * 1975-07-03 1978-02-28 Passavant-Werke Michelbacher Hutte Spraying apparatus for cleaning filter press plates
DE2823333A1 (de) * 1978-05-29 1979-12-13 Rittershaus & Blecher Gmbh Filterpresse mit einer abspritzeinrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3775950A (en) * 1970-07-06 1973-12-04 A Hallamore Process air automatic self-cleaning air filtration system
US3780747A (en) * 1971-04-21 1973-12-25 Abel Pumpen Masch Apparatus for cleaning filter plates and the like
US3826374A (en) * 1972-06-02 1974-07-30 Passavant Werke Apparatus enabling the shifting of groups of filter plates in a filter press
US4076033A (en) * 1975-07-03 1978-02-28 Passavant-Werke Michelbacher Hutte Spraying apparatus for cleaning filter press plates
DE2823333A1 (de) * 1978-05-29 1979-12-13 Rittershaus & Blecher Gmbh Filterpresse mit einer abspritzeinrichtung

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6453918B2 (en) * 1998-07-16 2002-09-24 Car-Tec Company Safety and environmental workbench
US6390106B1 (en) * 1999-10-29 2002-05-21 Au Optronics Corp. Multidirectional liquid sprayer used in a wet process
US6666038B1 (en) 2002-09-13 2003-12-23 Richard A. Hynes Air conditioning system including liquid washdown dispenser and related methods
US20100032388A1 (en) * 2007-02-21 2010-02-11 Hydrotech Veolia Water Systems Aktiebolag Device and Method for Cleaning a Filter Cloth
US8101090B2 (en) * 2007-02-21 2012-01-24 Veolia Water Solutions & Technologies Support Device and method for cleaning a filter cloth
US8444862B2 (en) 2007-02-21 2013-05-21 Veolia Water Solutions & Technologies Support Device and method for cleaning a filter cloth
US20100108620A1 (en) * 2008-10-30 2010-05-06 Fruit Growers Supply Company Dual side cleaning and traversing screen filtration system
US8297447B2 (en) * 2008-10-30 2012-10-30 Fruit Growers Supply Company Dual side cleaning and traversing screen filtration system
US20210387114A1 (en) * 2018-11-05 2021-12-16 Ishigaki Company Limited Filter cloth cleaning method of filter press
US12521652B2 (en) * 2018-11-05 2026-01-13 Ishigaki Company Limited Filter cloth cleaning method of filter press
CN115445339A (zh) * 2022-09-22 2022-12-09 江苏鑫润冶金机械制造有限公司 一种链篦机回转窑球团焙烧烟气处理系统及处理方法

Also Published As

Publication number Publication date
FR2459070B2 (enExample) 1982-10-01
FR2459070A2 (fr) 1981-01-09

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