Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
  • B01D29/62—Regenerating the filter material in the filter
  • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
  • B01D29/665—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps by using pistons
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
  • B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
  • B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
  • B01D29/62—Regenerating the filter material in the filter
  • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
  • B01D29/62—Regenerating the filter material in the filter
  • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
  • B01D29/668—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with valves, e.g. rotating valves for coaxially placed filtering elements
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
  • B01D29/62—Regenerating the filter material in the filter
  • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
  • B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles

Definitions

• the invention relates to a filter device with a plurality of filter elements, which are accommodated in a filter housing with a filter inlet for fluid to be filtered and a filter outlet for the filtered fluid, wherein during the filtration process at least one of the filter elements for cleaning its effective filter surface by means of a backwashing is backwashable, which includes a pressure control device to support the backwashing.
• a generic filter device is disclosed in DE 10 2007 054 737 A1. Such a filtering device allows a continuous filtration operation, wherein successively filter elements to be regenerated, are backwashed, while the filtration is continued over the remaining filter elements, so that the filtration operation is interrupted at any time.
• the backwashing process does not take place exclusively in such a way that the system pressure prevailing in the filter device allows a partial flow of the filter to flow through the filter element to be cleaned in the reverse direction in order to detach and remove the dirt from the element, but instead that, in an effort to remove even more stubborn soils can, by means of a pressure control device to the backwashed filter element, a negative pressure is generated. Therefore, not only is the system pressure effective for the backwashing, but a higher pressure gradient is available under pressure control to remove soiling.
• the pressure control device has a shut-off element, by means of which the fluid connection between the fluid flowing into the filter housing and the respective filter element to be backwashed can be blocked for a respective backwashing process.
• the invention has the object to provide a filter device available, in which a supported by pressure control, particularly effective backwashing effect can be achieved. According to the invention this object is achieved by a filter device having the features of claim 1 in its entirety.
• the pressure control device includes a hydraulic accumulator whose fluid chamber, while the device operates in filtration mode, can be filled with a quantity of cleaned fluid and for a backwashing process via a backwash guide with the clean side of eachongsini- ing Filter element is connectable.
• the further fluid chamber of the hydraulic accumulator for the backwashing process by means of a valve control device with a compressed gas source is connectable.
• the use of compressed air can be particularly advantageous, for example when the Filter device is operated in conjunction with systems or facilities in which a compressed air supply is available.
• the further fluid chamber of the hydraulic accumulator for the backwashing process by means of a valve control device with a compressed gas source is connectable.
• the arrangement is in this case made such that a purge gas tank arranged outside the filter housing is provided as the compressed gas source. Without impairing the compactness of the filter device, a correspondingly large, stored gas volume can be made available for respective backwashing processes by means of a tank which is preloaded, for example, with compressed air.
• the valve control device can have a fast-opening valve in a purge gas line leading from the compressed gas source to the hydraulic accumulator.
• a pneumatically actuated diaphragm valve can advantageously be provided in the purge gas line.
• hydraulic accumulator and backflushing connected to each other, rotatably arranged in the filter housing and rotatable for adjusting movements between filtration operation and backwashing by means of a rotary drive.
• a drive preferably in the form of an electric geared motor, is mounted on a free and easily accessible end of the hydraulic accumulator.
• the hydraulic accumulator is adjustable to rotational positions in which the backwash guide forms the fluid connection to the filter element to be cleaned.
• the piston accumulator is characterized by a particularly robust design by a good ratio between size and AufNeillbarer filling amount of purified fluid, the total displacement of the piston and thus approximately the total volume of Memory cylinder corresponds.
• the filter elements can be accommodated in each case in its own element chamber, which are arranged in the filter housing on a circular axis surrounding the cylinder axis concentric. With this concentric arrangement, the connection connection of the individual element chambers with the rotatable backflushing guide can be made particularly simple.
• the hydraulic accumulator can be arranged between the element chambers surrounding it such that the fluid chambers of the hydraulic accumulator are located between the chamber connections of the element chambers located at the ends of the filter elements.
• the filter inlet exhibiting input space and a separate, connected to the filter outlet, the clean side during the filtration process forming exit space available, of which the first room with the raw-side chamber connection and the second with the clean-side chamber connection of the element chambers located in the filtration operation are in communication.
• the arrangement can also be made such that in the filter housing is provided to the clean-side chamber connections of the element chambers overflow space, which is in communication with the output space and from the corresponding at a Filtrationsvorgang rotary position of the hydraulic accumulator whose first fluid chamber via an in the wall of the backwash guide located Auf spallbohrung can be filled with cleaned fluid.
• the backwash guide is connected to the clean-side chamber connection of the element chamber to be backwashed, at the same time a backwash arm, which is rotatable together with the hydraulic accumulator, at the end of the cylinder of the hydraulic accumulator opposite the backwash guide, for the outflow of a backwashing amount, connects the raw-side chamber connection of the element chamber to be backwashed to a backwash line.
• a motor-operated backwash valve can be arranged, which is preferably a ball valve, which can be rotatable by means of a pneumatic drive.
• FIG. 1A to 1 C schematically simplified drawn, perspective
• FIG. 2 and 3 with respect to Figure 1 drawn on a larger scale, perspective oblique views of the embodiment with six filter element chambers, seen on the front or the back of the device.
• Fig. 4 is a central longitudinal section of the embodiment of
• FIG. 5 shows a longitudinal section corresponding to FIG. 4, the operating state of the backwashing of the element chamber which is visible on the right side being illustrated;
• Fig. 6 shows a comparison with Figs. 4 and 5 further enlarged drawn longitudinal section of the embodiments of the filter device associated Spülgastanks associated with functional components and
• FIG. 7 a comparison with FIG. 6 further enlarged drawn
• FIG. 1 which in the subfigures 1A to 1 C respectively shows an overall view of the filter device according to the invention, a housing main part with 1, filter element chambers with 3 and a drive part with 5 are designated.
• An inlet provided at the main portion 1 for the supply of fluid to be purged is denoted by 7, and an outlet for purged fluid is denoted by 9.
• Fig. 1 also illustrates that the device according to the invention in the manner of a modular modular system for operation with a different number of filter elements can be formed.
• Fig. 1 also illustrates that the device according to the invention in the manner of a modular modular system for operation with a different number of filter elements can be formed.
• FIG. 1A shows an example with two filter element chambers 3, in each of which a filter element 1 1 ( Figures 4 and 5) is receivable, while Figure 1 B is an example with four element chambers 3 and Fig. 1C is an example with six Element chambers 3 show.
• a plurality of filter elements 1 1 may be provided, for example in the form of a so-called. Filter candle, as is the case in the present case.
• a purge gas tank 13 On the purge gas tank 13, a diaphragm valve 15 is connected, which is shown in Fig. 7 in a single representation and is pneumatically actuated.
• a purge gas line 17 connects to the diaphragm valve 15, via which the device can be supplied with purge gas under pressure, which will be discussed in more detail with reference to FIGS. 4 to 6.
• FIGS. 4 and 5 each show a longitudinal section of the device, wherein FIG. 4 shows the operating state of the filtration operation, while FIG. 5 shows the state in the backwashing of the filter element 11, which is in the element chambers shown on the right in FIG 3 is located.
• the element chambers 3 are arranged lying on a circular line in such a way that they interpose one between concentric surrounding hydraulic accumulator.
• the hydraulic accumulator is, as shown in FIGS. 4 and 5, formed by a piston accumulator 19.
• FIGS. 4 and 5 formed by a piston accumulator 19.
• the piston accumulator 19 is rotatable about its cylinder axis between input space 21 and output space 23, a sealed rotary bearing 31 being provided on a housing shoulder 33 which separates the input space 21 from the output space 23.
• Another, sealed pivot bearing 35 is located on a bottom part 37, which closes the housing on the bottom side.
• Rotary position of the located on the underside of the piston 59 cylinder chamber 48 is vented because the input 61 of a supply channel 63 for purge gas, which is visible only in Fig. 5, with a vent groove, not shown in the bottom part 37 of the housing in coverage.
• the piston accumulator 19 is in the rotational position shown in Fig. 5, the inlet 61 of the purge gas channel 63 with a purge gas line 65 in conjunction, see Fig. 6.
• a filter element 1 1 from the inside out generates impulsive fluid flow and dissolves impurities, so that mud laden backwash quantity passes via the chamber connection 25 to the backwash output 51 and exits from there via the opened ball valve 53 and the backwash line 57. While in the illustrations of FIGS.
• the outlet flange 60 is shown lying with the backwash line 57 respectively on the front side of the device, if necessary, the entire backwash output 51, including ball valve 53, backwash line 57 and flange 60 in any position on the housing. 1 be arranged because no drive connection between the rotatable piston accumulator 19 and the Ruth Cyprusausgang 51 is given.
• Figs. 6 and 7 show details of the compressed gas supply.
• a purge gas tank 13 is attached to the back of the device. Via a pressure line 67 with upstream pressure control valve 69 and a stopcock 71 of the purge gas tank 13 is charged with compressed air, which is supplied to the stopcock 71 from a compressed air line 73 ago, in which there is a check valve 75.
• a fast-opening valve in the form of the diaphragm valve 15 is provided at a port 77 of the purge gas tank 13, which is pneumatically actuated via a control line 79.
• the membrane valve 15 shown in more detail in FIG. 7 is connected via a connection sleeve 81 connected to the purge gas line 65.
• the diaphragm valve 15 is shown in the closed position, in which the membrane 83 is held by a prevailing in the located in the upper side in the diaphragm 83 control chamber 85 control pressure against the pressure prevailing at the terminal 77 pressure of the purge gas tank 13 in the closed position.
• the diaphragm valve 15 opens quickly, so that by means of a compressed air pressure surge of the piston 59 of the piston accumulator 19 is moved abruptly for a backwashing.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Filtering Of Dispersed Particles In Gases (AREA)
• Filtration Of Liquid (AREA)
• Fluid-Pressure Circuits (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Publications (2)

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Family Applications (2)

Family Applications After (1)

Country Status (9)

Cited By (4)

Families Citing this family (6)

Citations (2)

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• 2011
  • 2011-05-05 DE DE102011100518A patent/DE102011100518A1/de not_active Withdrawn
• 2012
  • 2012-04-26 WO PCT/EP2012/001773 patent/WO2012150011A1/de not_active Ceased
  • 2012-04-26 US US13/261,764 patent/US9855520B2/en active Active
  • 2012-04-26 EP EP12718912.4A patent/EP2704811B1/de active Active
  • 2012-04-26 JP JP2014508705A patent/JP6158790B2/ja active Active
  • 2012-04-26 PL PL12718912T patent/PL2704811T3/pl unknown
  • 2012-04-26 JP JP2014508706A patent/JP6006295B2/ja active Active
  • 2012-04-26 CN CN201280021848.1A patent/CN103561837B/zh active Active
  • 2012-04-26 KR KR1020137032075A patent/KR101950167B1/ko active Active
  • 2012-04-26 DK DK12718912.4T patent/DK2704811T3/en active
  • 2012-04-26 EP EP12724887.0A patent/EP2704812B1/de active Active
  • 2012-04-26 CN CN201280021885.2A patent/CN103517744B/zh active Active
  • 2012-04-26 KR KR1020137032066A patent/KR101961088B1/ko active Active
  • 2012-04-26 WO PCT/EP2012/001772 patent/WO2012150010A1/de not_active Ceased
  • 2012-04-26 US US13/261,770 patent/US11058975B2/en active Active
  • 2012-04-26 DK DK12724887.0T patent/DK2704812T3/da active

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