CA2124226A1 - Filter device - Google Patents
Filter deviceInfo
- Publication number
- CA2124226A1 CA2124226A1 CA002124226A CA2124226A CA2124226A1 CA 2124226 A1 CA2124226 A1 CA 2124226A1 CA 002124226 A CA002124226 A CA 002124226A CA 2124226 A CA2124226 A CA 2124226A CA 2124226 A1 CA2124226 A1 CA 2124226A1
- Authority
- CA
- Canada
- Prior art keywords
- filter
- chamber
- suction
- disk
- filter device
- 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.)
- Abandoned
Links
- 239000002245 particle Substances 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 102000015933 Rim-like Human genes 0.000 claims description 2
- 108050004199 Rim-like Proteins 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims 1
- 238000005192 partition Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 9
- 230000033001 locomotion Effects 0.000 abstract description 4
- 230000000737 periodic effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 4
- 230000004323 axial length Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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
- B01D29/39—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 hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type
- B01D29/41—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 hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type mounted transversely on the tube
- B01D29/413—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 hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type mounted transversely on the tube divided in sectors
-
- 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
- B01D29/39—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 hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type
- B01D29/43—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 hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type mounted otherwise than transversely on the tube mounted otherwise than axially on the tube
-
- 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
- B01D29/682—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with a rotary movement with respect to the filtering element
-
- 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
- B01D29/684—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with a translatory movement with respect to the filtering element
-
- 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
- B01D29/688—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with backwash arms or shoes acting on the cake side
-
- 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
- B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
-
- 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
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
-
- 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
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/26—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies rotatable
-
- 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
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/68—Regeneration of the filtering material or filter elements inside the filter by means acting on the cake side involving movement with regard to the filter elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2275/00—Filter media structures for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2275/20—Shape of filtering material
- B01D2275/202—Disc-shaped filter elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/27—Filters with filtering elements which move during the filtering operation with rotary filtering surfaces, which are neither cylindrical nor planar, e.g. helical surfaces
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Centrifugal Separators (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Surgical Instruments (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
A B S T R A C T
The filter disks (12, 13) of the filter device are provided on both sides on a filter chamber (34), which surrounds an inflow-side, closed outflow chamber (5) in circular or helical manner. For periodic cleaning purposes on each filter disk (12, 13) is provided a suction nozzle (14, 15) for filtered off solid particles, which extends over the radial width of the filter disk (12, 13). During cleaning, a drive (20, 21) rotates the outflow chamber (5) with the filter chamber (34) fixed thereto, so that the filter disks move along the suction nozzles (14, 15). In the case of a helical filter chamber (34) only one pair of suction nozzles (14, 15) is required, in that they are moved on a rod guide as a result of the rotary movement of the filter chamber (34). The rotary movement of the filter chamber (34) in one direction makes one of the filter disks (12, 13) engage with one of the suction nozzles (14, 15). In the meantime the other is closed by a check valve (45). An outwardly tapering cross-sectional shape of thefilter chamber (34) permits the engagement of the suction nozzles (14, 15) with a slight pitch of the thread shape of the filter chamber (34) or in the case of a confined arrangement of several axially juxtaposed filter chambers. Thus, no separate drive is required for moving a suction nozzle over the filter surface and, compared with its size, the filter device has a large filter surface.
(Fig. 5)
The filter disks (12, 13) of the filter device are provided on both sides on a filter chamber (34), which surrounds an inflow-side, closed outflow chamber (5) in circular or helical manner. For periodic cleaning purposes on each filter disk (12, 13) is provided a suction nozzle (14, 15) for filtered off solid particles, which extends over the radial width of the filter disk (12, 13). During cleaning, a drive (20, 21) rotates the outflow chamber (5) with the filter chamber (34) fixed thereto, so that the filter disks move along the suction nozzles (14, 15). In the case of a helical filter chamber (34) only one pair of suction nozzles (14, 15) is required, in that they are moved on a rod guide as a result of the rotary movement of the filter chamber (34). The rotary movement of the filter chamber (34) in one direction makes one of the filter disks (12, 13) engage with one of the suction nozzles (14, 15). In the meantime the other is closed by a check valve (45). An outwardly tapering cross-sectional shape of thefilter chamber (34) permits the engagement of the suction nozzles (14, 15) with a slight pitch of the thread shape of the filter chamber (34) or in the case of a confined arrangement of several axially juxtaposed filter chambers. Thus, no separate drive is required for moving a suction nozzle over the filter surface and, compared with its size, the filter device has a large filter surface.
(Fig. 5)
Description
U
FILTER DE,VICE
BACKGROUND OF THE INVENTION
The invention relates to a filter device for removing solid particles from a medium, with a casing having an inlet and an outlet and in which is arranged at least one filter disk mounted in rotary manner and connected to a rotary drive, and having at least one suction device having a suction nozzle positioned adjacent to the filter disk and 5 serving to remove solid particles from the filter disk.
A filter disk of the aforementioned type is known from Figs. 3 and 4 of EP-A-497732. The suction nozzle of this known device has an opening cross-section extending only over a small part of the filter disk in order to obtain an adequate suction action.
In order to periodically remove solid particles from the entire filter disk surface, it is 10 consequently necessary to move the suction nozzle by means of a drive mechanism in radial manner over the filter disk rotating during cleaning.
SUMh~ARY OF THE INVENTION
The problem of the invention is to provide a filter device of the aforementioned type which, compared with its size, has a large filter surface and permits by a simply con-structed mechanism a periodic cleaning of the filter surface with a good cleaning 15 action. According to the invention this problem is solved in that the filter disk in circular or helical manner surrounds a support element mounted in rotary manner and connected' to a drive, the suction nozzle of the suction device extending over the radial width of the filter disk.
BRIEF DESCRIPI`ION OF THE DRAWINGS
The invention is described in greater detail hereinafter relative to advantageous 20 embodiments of the device and with reference to the attached drawings, wherein show:
Fig. I A view of a filter device according to the invention in the direction of a first filter surface on the inflow side.
, ~ . - : .
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FILTER DE,VICE
BACKGROUND OF THE INVENTION
The invention relates to a filter device for removing solid particles from a medium, with a casing having an inlet and an outlet and in which is arranged at least one filter disk mounted in rotary manner and connected to a rotary drive, and having at least one suction device having a suction nozzle positioned adjacent to the filter disk and 5 serving to remove solid particles from the filter disk.
A filter disk of the aforementioned type is known from Figs. 3 and 4 of EP-A-497732. The suction nozzle of this known device has an opening cross-section extending only over a small part of the filter disk in order to obtain an adequate suction action.
In order to periodically remove solid particles from the entire filter disk surface, it is 10 consequently necessary to move the suction nozzle by means of a drive mechanism in radial manner over the filter disk rotating during cleaning.
SUMh~ARY OF THE INVENTION
The problem of the invention is to provide a filter device of the aforementioned type which, compared with its size, has a large filter surface and permits by a simply con-structed mechanism a periodic cleaning of the filter surface with a good cleaning 15 action. According to the invention this problem is solved in that the filter disk in circular or helical manner surrounds a support element mounted in rotary manner and connected' to a drive, the suction nozzle of the suction device extending over the radial width of the filter disk.
BRIEF DESCRIPI`ION OF THE DRAWINGS
The invention is described in greater detail hereinafter relative to advantageous 20 embodiments of the device and with reference to the attached drawings, wherein show:
Fig. I A view of a filter device according to the invention in the direction of a first filter surface on the inflow side.
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Fig. 2 An incomplete axial section and a partial side view of the internal structure of the device according to Fig. 1.
Fig. 3 A side view of the device according to Figs. l and 2.
Fig. 4 A view of a second embodiment of a device according to the invention in the direction of the inflow side.
Fig. 5 An incomplete axial section and a partial side view of the internal structure of the device according to Fig. 4.
Fig. 6 A side view of the device according to Figs. 4 and 5.
Fig. 7 A partial cross-section through the filter chamber according to Figs. 4 and 5 in the vicinity of the two suction nozzles.
Fig. 8 A view of one of the suction nozzles in the direction of arrow IIX in Fig. 7.
Fig. 9 A view of the nozzle carrier of the device according to Figs. 4 to 6 with a rod guide.
Fig. 10 A side view of the arrangement according to Fig. 9.
Fig. I l A cross-section through part of the outflow chamber in the vicinity of its drive and seal.
The filter device shown in two basic embodiments has a casing I forming an outerboundary, having an inlet 2 for the medium to be cleaned, e.g. the air of an air20 conditioning plant, on one casing side and having an outlet 3 on the opposite casing side. For example, the casing I forms an enlarged duct portion of a not shown flow duct. The cross-sectional shape of the casing 1 is preferably square, so that the filter device can be arranged in space-saving manner.
In the casing I a cylindrical outflow chamber is mounted in rotary manner being 25 closed on the inflow side by a wall 4 and to whose circumference are fixed several circular filter chambers 6 to 9. The gas to be cleaned consequently flows from the outside via the filter chambers 6 to 9 radially into the outflow chamber 51 so as to leave the latter axially via the outflow-side chamber opening I0 in a form from which the solid particles have been removed. In the vicinity of the circular filter chambers 6 30 to 9, the wall of the outflow chamber 5 has for this purpose several circumferentially uniformly distributed openings 11.
As the circular filter chambers 6 to 9 have on both sides in each case one filter disk 12, 13 and axially and successively several are arranged on the outflow chamber 5, , . .
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compared with its external dimensions the filter device has a particularly large overall filter surface. The radially measured width of the individual circular ring-shaped filter disk 12, 13 is determined by the length of the elongated suction nozzles 14, IS
!ocated thereon. The diameter of the filter disks 12, 13 is obtained on the basis of the 5 flow cross-section desired for the outflow chamber S for the cleaned medium flowing to the outlet 10. This flow cross-section is preferably adapted to the cross-sectional size of the flow paths on the inflow side to the filter disks, so that there are no significant changes to the flow rates between the inlet and outlet of the filter device.
The spacing between the radially outer boundary of the filter chambers 6 to 9 and the 10 wall of the casing I is correspondingly chosen. In the case of a square cross-sectional shape of the casing I in accordance with the represented embodiments said spacing can be particularly small, because in the four corner areas 17 of the casing there are large cross-sections for the inflow to the filter disks 12, 13 of the different filter chambers 6 to 9.
15 In order to clean the filter disks 12, 13 of the filter chambers 6 to 9 after collecting a certain quantity of filtered off solid particles and which leads to a significant pressure drop in connection with the flow-through the filter device, they are moved in rotary manner along fixed suction nozzles 14, IS on either side of each filter chamber 6 to 9.
For this purpose the outfiow cnamber 5 is mounled in rotary manner a[ ilS two ends 20 by means of bearings 18, 19 and is connected to a drive, which e.g. comprises an electric motor 20 and a V-belt drive transmission 21. The bearings 18, 19 are secured to the frame 29 fixed in the casing. The shaft 30 of the outflow chamber 5 is fixed on the inflow side to the chamber wall 4 and on the outflow side to spokes 35 of the outflow chamber S.
25 The sealing between the rotary outflow chamber 5 and an outflow-side endplate 23 fixed to the casing I is provided by a seal ar~angement 24 in accordance with Fig. I l.
This arrangement has a sealing rib 25 surrounding the outflow chamber S and which rotates therewith and which is surrounded on either side by in each case one sealing ring 26, 27 fixed to the end plate 23. The differential pressure of the medium to be 30 filtered present between the inflow side and outflow side of the filter device presses the axially displaceably mounted outflow chamber S with its sealing rib 25 against the outflow-side sealing ring 27.
The filter disks 12, 13 made from textile filter mats are assembled from several disk elements cut out in ring sector-like manner and are detachably fixed to a wheel-like 35 support frame 31 for forming the filter chambers 6 to 9. On either side of a filter :
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chamber 6 to 9 are e.g. provided four disk elements, so that each extends over an arc angle of 90. Their fixing to the support frarne 21 can e.g. take place by means of Velcro strip fasteners 22, which are provided in strip-like manner on an outwardly inclined surface of the hub or rim-like frame elements 32, 33.
The filter device of the embodiment of Figs. 4 to 6 differs from that according to Figs. I to 3 in that there is only one filtér chamber 34, which helically surrounds an outflow chamber 5, whose axial length is the same as that in the previously described embodiment. Openings 11' arranged in a helical row constitute the flow connection from the filter chamber 34 into the outflow chamber 5'. This filter device only requires one pair of suction nozzles 14', 15', which enclose between them the thread pitch of the filter chamber 34 in accordance with Fig. 7.
In order that the helical filter chamber 34 can move between the two suction nozzles 14, 15 during the rotation of the outflow chamber 5', said nozzles are fixed to a common nozzle carrier 37, which is displaceably guided on a guide rod 38 by means of a travelling carriage 37 (Figs. 9 and 10). The guidance on the helical filterchamber 34 takes place by means of two rollers 40, 41 mounted on the nozzle carrier 36 and which enclose between them with an adequate spacing a guide rib 42, so as to be able to take account of divergences in the shape of the guide rib 42 from a geo-metrically precise helix.
For cleaning the filter disks 12, 13 the otherwise stationary filter chamber 34 is rotated in a direction by the belt drive 20, 21 until the travelling carriage 37 carried along by the guide rib 42 strikes against a limit switch 39 positioned in the vicinity of the guide rod 38. This limit switch 39 brings about a reversal of the rotation direction of the belt drive 20, 21, as well as the reversal of a check valve 45 operated by a sliding drive 44. Said valve only frees the suction line 46, 47 of one of the suction nozzles 14, 15 arranged on either side of the filter chamber 34 and against which engages one of the filter disks 12, 13 as a result of the rotary and conveying move-ment of the helix thereof. Since, as a function of the rotary movement, only onesuction nozzle 14, 15 of the nozzle pair is active, there is an intense cleaning action on the flexible, textile filter material. Thus, as a result of the suction flow, the filter material bends out slightly between the radially directed boundary lips 48, 49 of the particular suction nozzles 14, 15 the detachment of impurities from the filter disk is facilitated by a vibrating motor 50 fixed to the suction nozzles 14, 15, so that the .~,, , , , . , ....................... , . ,~ . , .
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boundary lips 48, 49 of the suction nozzles 14, 15 have a vibrating action on the filter material .
The suction lines 46, 47 of the suction nozzles 14, 15 are connected, behind the check valve 45, to an outwardly leading collecting line 52 or 53, to whose end can be 5 coupled a commercial vacuum cleaner 54. As the cleaning of the filter disks is only necessary after given time intervals, the vacuum cleaner can be uncoupled from the filter device during the intervening periods. During the latter when the filter device is operating normally, both suction lines 46, 47 are closed by the check valve 45.
For disinfecting the filter material after sucking off the impurities, on the unit carrying 10 the suction nozzles 14, 15 and the vibrating motor 50 there is a spray nozzle 51, which extends in slot-like manner over the radial width of the filter disks 12, 13.
The cross-sectional shape of the filter chamber 34 and the suc~ion nozzles 14, 15, located thereon, of the previously described embodiment of the filter device can ~e similarly constructed in the first embodiment with several axially succeeding filter 15 chambers 6 to 9. The radially outwardly tapering cross-sectional shape of the filter chambers 6 to 9 or 34 has several advantages. Despite the engagement of the suction nozzles 14, 15, it makes it possible to axially juxtapose with a limited spacing several filter chambers 6 to 9 or to shape the helical filter chamber 34 with a limi~ed pitch, so that in a filter device of specific axial length a larger filter surface is available for 20 cleaning tlle medium. As a result of the inclined arrangement of the filter disks 12, 13, for the same diameter, they acquire a somewhat greater width and a smaller deflection of the gas flow occurs during the flow through the same.
The views of the outside of the casing I of the filter devices according to Figs. 3 and 6 show relatively large doors 56, 57 provided laterally on the casing 1, which can be 25 opened for checking the state of the filter surfaces and for the easy replacement of damaged elements of the filter disks 12, 13. A further small door 58 gives access to the electrical elements of the filter device.
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Fig. 3 A side view of the device according to Figs. l and 2.
Fig. 4 A view of a second embodiment of a device according to the invention in the direction of the inflow side.
Fig. 5 An incomplete axial section and a partial side view of the internal structure of the device according to Fig. 4.
Fig. 6 A side view of the device according to Figs. 4 and 5.
Fig. 7 A partial cross-section through the filter chamber according to Figs. 4 and 5 in the vicinity of the two suction nozzles.
Fig. 8 A view of one of the suction nozzles in the direction of arrow IIX in Fig. 7.
Fig. 9 A view of the nozzle carrier of the device according to Figs. 4 to 6 with a rod guide.
Fig. 10 A side view of the arrangement according to Fig. 9.
Fig. I l A cross-section through part of the outflow chamber in the vicinity of its drive and seal.
The filter device shown in two basic embodiments has a casing I forming an outerboundary, having an inlet 2 for the medium to be cleaned, e.g. the air of an air20 conditioning plant, on one casing side and having an outlet 3 on the opposite casing side. For example, the casing I forms an enlarged duct portion of a not shown flow duct. The cross-sectional shape of the casing 1 is preferably square, so that the filter device can be arranged in space-saving manner.
In the casing I a cylindrical outflow chamber is mounted in rotary manner being 25 closed on the inflow side by a wall 4 and to whose circumference are fixed several circular filter chambers 6 to 9. The gas to be cleaned consequently flows from the outside via the filter chambers 6 to 9 radially into the outflow chamber 51 so as to leave the latter axially via the outflow-side chamber opening I0 in a form from which the solid particles have been removed. In the vicinity of the circular filter chambers 6 30 to 9, the wall of the outflow chamber 5 has for this purpose several circumferentially uniformly distributed openings 11.
As the circular filter chambers 6 to 9 have on both sides in each case one filter disk 12, 13 and axially and successively several are arranged on the outflow chamber 5, , . .
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~: ,, . . :
compared with its external dimensions the filter device has a particularly large overall filter surface. The radially measured width of the individual circular ring-shaped filter disk 12, 13 is determined by the length of the elongated suction nozzles 14, IS
!ocated thereon. The diameter of the filter disks 12, 13 is obtained on the basis of the 5 flow cross-section desired for the outflow chamber S for the cleaned medium flowing to the outlet 10. This flow cross-section is preferably adapted to the cross-sectional size of the flow paths on the inflow side to the filter disks, so that there are no significant changes to the flow rates between the inlet and outlet of the filter device.
The spacing between the radially outer boundary of the filter chambers 6 to 9 and the 10 wall of the casing I is correspondingly chosen. In the case of a square cross-sectional shape of the casing I in accordance with the represented embodiments said spacing can be particularly small, because in the four corner areas 17 of the casing there are large cross-sections for the inflow to the filter disks 12, 13 of the different filter chambers 6 to 9.
15 In order to clean the filter disks 12, 13 of the filter chambers 6 to 9 after collecting a certain quantity of filtered off solid particles and which leads to a significant pressure drop in connection with the flow-through the filter device, they are moved in rotary manner along fixed suction nozzles 14, IS on either side of each filter chamber 6 to 9.
For this purpose the outfiow cnamber 5 is mounled in rotary manner a[ ilS two ends 20 by means of bearings 18, 19 and is connected to a drive, which e.g. comprises an electric motor 20 and a V-belt drive transmission 21. The bearings 18, 19 are secured to the frame 29 fixed in the casing. The shaft 30 of the outflow chamber 5 is fixed on the inflow side to the chamber wall 4 and on the outflow side to spokes 35 of the outflow chamber S.
25 The sealing between the rotary outflow chamber 5 and an outflow-side endplate 23 fixed to the casing I is provided by a seal ar~angement 24 in accordance with Fig. I l.
This arrangement has a sealing rib 25 surrounding the outflow chamber S and which rotates therewith and which is surrounded on either side by in each case one sealing ring 26, 27 fixed to the end plate 23. The differential pressure of the medium to be 30 filtered present between the inflow side and outflow side of the filter device presses the axially displaceably mounted outflow chamber S with its sealing rib 25 against the outflow-side sealing ring 27.
The filter disks 12, 13 made from textile filter mats are assembled from several disk elements cut out in ring sector-like manner and are detachably fixed to a wheel-like 35 support frame 31 for forming the filter chambers 6 to 9. On either side of a filter :
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chamber 6 to 9 are e.g. provided four disk elements, so that each extends over an arc angle of 90. Their fixing to the support frarne 21 can e.g. take place by means of Velcro strip fasteners 22, which are provided in strip-like manner on an outwardly inclined surface of the hub or rim-like frame elements 32, 33.
The filter device of the embodiment of Figs. 4 to 6 differs from that according to Figs. I to 3 in that there is only one filtér chamber 34, which helically surrounds an outflow chamber 5, whose axial length is the same as that in the previously described embodiment. Openings 11' arranged in a helical row constitute the flow connection from the filter chamber 34 into the outflow chamber 5'. This filter device only requires one pair of suction nozzles 14', 15', which enclose between them the thread pitch of the filter chamber 34 in accordance with Fig. 7.
In order that the helical filter chamber 34 can move between the two suction nozzles 14, 15 during the rotation of the outflow chamber 5', said nozzles are fixed to a common nozzle carrier 37, which is displaceably guided on a guide rod 38 by means of a travelling carriage 37 (Figs. 9 and 10). The guidance on the helical filterchamber 34 takes place by means of two rollers 40, 41 mounted on the nozzle carrier 36 and which enclose between them with an adequate spacing a guide rib 42, so as to be able to take account of divergences in the shape of the guide rib 42 from a geo-metrically precise helix.
For cleaning the filter disks 12, 13 the otherwise stationary filter chamber 34 is rotated in a direction by the belt drive 20, 21 until the travelling carriage 37 carried along by the guide rib 42 strikes against a limit switch 39 positioned in the vicinity of the guide rod 38. This limit switch 39 brings about a reversal of the rotation direction of the belt drive 20, 21, as well as the reversal of a check valve 45 operated by a sliding drive 44. Said valve only frees the suction line 46, 47 of one of the suction nozzles 14, 15 arranged on either side of the filter chamber 34 and against which engages one of the filter disks 12, 13 as a result of the rotary and conveying move-ment of the helix thereof. Since, as a function of the rotary movement, only onesuction nozzle 14, 15 of the nozzle pair is active, there is an intense cleaning action on the flexible, textile filter material. Thus, as a result of the suction flow, the filter material bends out slightly between the radially directed boundary lips 48, 49 of the particular suction nozzles 14, 15 the detachment of impurities from the filter disk is facilitated by a vibrating motor 50 fixed to the suction nozzles 14, 15, so that the .~,, , , , . , ....................... , . ,~ . , .
, ,;.,. , :: . ,,, , ~ ~ :
~"~
- 5 - - ~
boundary lips 48, 49 of the suction nozzles 14, 15 have a vibrating action on the filter material .
The suction lines 46, 47 of the suction nozzles 14, 15 are connected, behind the check valve 45, to an outwardly leading collecting line 52 or 53, to whose end can be 5 coupled a commercial vacuum cleaner 54. As the cleaning of the filter disks is only necessary after given time intervals, the vacuum cleaner can be uncoupled from the filter device during the intervening periods. During the latter when the filter device is operating normally, both suction lines 46, 47 are closed by the check valve 45.
For disinfecting the filter material after sucking off the impurities, on the unit carrying 10 the suction nozzles 14, 15 and the vibrating motor 50 there is a spray nozzle 51, which extends in slot-like manner over the radial width of the filter disks 12, 13.
The cross-sectional shape of the filter chamber 34 and the suc~ion nozzles 14, 15, located thereon, of the previously described embodiment of the filter device can ~e similarly constructed in the first embodiment with several axially succeeding filter 15 chambers 6 to 9. The radially outwardly tapering cross-sectional shape of the filter chambers 6 to 9 or 34 has several advantages. Despite the engagement of the suction nozzles 14, 15, it makes it possible to axially juxtapose with a limited spacing several filter chambers 6 to 9 or to shape the helical filter chamber 34 with a limi~ed pitch, so that in a filter device of specific axial length a larger filter surface is available for 20 cleaning tlle medium. As a result of the inclined arrangement of the filter disks 12, 13, for the same diameter, they acquire a somewhat greater width and a smaller deflection of the gas flow occurs during the flow through the same.
The views of the outside of the casing I of the filter devices according to Figs. 3 and 6 show relatively large doors 56, 57 provided laterally on the casing 1, which can be 25 opened for checking the state of the filter surfaces and for the easy replacement of damaged elements of the filter disks 12, 13. A further small door 58 gives access to the electrical elements of the filter device.
t'`~
,.. . .
.,' ' ' ' .
,, . ~ .
~f. `;,
Claims (13)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A filter device for removing solid particles from a medium, with a casing (1) having an inlet and an outlet (2, 3), in which is located at least one filter disk (12, 13) mounted in rotary manner and connected to a rotary drive (20, 21) and with at least one suction device for removing solid particles from the filter disk (12, 13) having a suction nozzle (14, 15) and positioned adjacent to the filter disk (12, 13), wherein the filter disk (12, 13) in circular or helical manner surrounds a support element (5) mounted in rotary manner and connected to a rotary drive (20, 21), the suction nozzle (14, 15) of the suction device extending over the radial width of the filter disk (12, 13).
2. A filter device according to claim 1, wherein the lateral boundary of a circular filter chamber (6-9, 34) is formed by in each case two circular ring-shaped filter disks (12, 13) and it surrounds a rotatably mounted outflow chamber (5) forming the support element, which is closed on the inflow side and open on the outflow side and has on its circumference connecting openings (11) to the circular filter chambers (6-9, 34) and on both sides of the filter chambers (6-9, 34) is in each case provided one suction nozzle (14, 15).
3. A filter device according to claim 2, wherein the filter chamber (6-9, 34) has a radially outwardly tapering cross-section.
4. A filter device according to claim 2, wherein several filter chambers (6-9) are successively and spacedly fixed to a common outflow chamber (5), the suction nozzles (14, 15) engaging in the gap between the filter chambers.
5. A filter device according to claim 1, wherein the filter disks (12, 13) form the lateral boundary of a filter chamber (34), which is tightly fixed in the form of a helix to an outflow chamber (5) axially open on one side and mounted in rotary manner and is connected by numerous openings (11) to the interior of the outflow chamber (5), two suction nozzles (14, 15) being provided, whereof in each case one is located on the sides of the filter chamber (34).
6. A filter device according to claim 2, wherein the casing (1) of the device spacedly surrounds the at least one filter chamber (6-9, 34), an outflow-side partition (34) of the casing (1) surrounding in sealing manner the rotary outflow chamber (5).
7. A filter device according to claim 6, wherein the casing (1) spacedly surrounding the at least one filter chamber (6-9, 34) has a quadrangular cross-section transversely to the rotation axis of the outflow chamber (5).
8. A filter device according to claim 1, wherein the at least one filter disk (12, 13) has several circumferentially interconnected disk elements, so that they have the shape of ring sectors, the disk elements being detachably fixed along their edges to hub or rim-like frame parts (32, 33) of a support frame (31) of the at least one filter chamber (6-9, 34).
9. A filter device according to claim 8, wherein the disk elements are fixed to the frame parts (32, 33) by means of Velcro strip fasteners (22).
10. A filter device according to claim 5, wherein two suction nozzles (14, 15) are fixed lo a common nozzle carrier (36), which is guided both on the helical filter chamber (34) and on a guide surface (38) parallel to the rotation axis of the outflow chamber (5).
11. A filter device according to claim 1, wherein a vibrating device (50) is provided on each suction nozzle (14, 15).
12. A filter device according to claim 1, wherein a nozzle (51) for supplying a liquid to the filter surface is provided on each suction nozzle (14, 15).
13. A filter device according to claim 2, wherein the suction lines (46, 47) of a pair of suction nozzles (14, 15) are alternately closable, so that the suction flow is in each case only directed onto one suction nozzle (14, 15) of the pair.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH160193 | 1993-05-26 | ||
| CH01/601/93-4 | 1993-05-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2124226A1 true CA2124226A1 (en) | 1994-11-27 |
Family
ID=4214236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002124226A Abandoned CA2124226A1 (en) | 1993-05-26 | 1994-05-25 | Filter device |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP0629426B1 (en) |
| JP (1) | JPH07136440A (en) |
| CN (1) | CN1103812A (en) |
| AT (1) | ATE160512T1 (en) |
| AU (1) | AU6316594A (en) |
| BR (1) | BR9402064A (en) |
| CA (1) | CA2124226A1 (en) |
| DE (1) | DE59404656D1 (en) |
| FI (1) | FI941978A (en) |
| NO (1) | NO941933L (en) |
| ZA (1) | ZA943425B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3530436B2 (en) * | 1999-01-29 | 2004-05-24 | 三洋電機株式会社 | Vacuum cleaner dust collector and upright type vacuum cleaner |
| CN102527127B (en) * | 2010-12-30 | 2015-04-01 | 商城县开源环保设备有限公司 | Sewage filter treatment system |
| CN102085434B (en) * | 2011-01-13 | 2012-09-12 | 江苏溢洋水工业有限公司 | Hyperboloidal rotating disc dense fiber filtering system |
| DE102014116218A1 (en) * | 2014-11-06 | 2016-05-12 | Lk Metallwaren Gmbh | FILTER DEVICE AND OPERATING METHOD THEREFOR |
| CN105398285B (en) * | 2015-12-16 | 2018-04-10 | 王晓佩 | A kind of wheel hub and method for cutting down particulate in air content |
| CN106477649A (en) * | 2016-11-30 | 2017-03-08 | 合肥亿福自动化科技有限公司 | A kind of new filtering cloth filtering pool automated programming system |
| CN108970263A (en) * | 2018-08-17 | 2018-12-11 | 四川健尔莱医疗器械科技有限公司 | A kind of air cleaning unit improvement structure |
| WO2021240073A1 (en) * | 2020-05-27 | 2021-12-02 | Gaudfrin | Rotary filter and associated filtering method |
| CN112495333A (en) * | 2020-11-06 | 2021-03-16 | 安徽皖东树脂科技有限公司 | Macroporous ion exchange resin processing device and processing technology |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4222754A (en) * | 1978-11-24 | 1980-09-16 | Horvat Ivan J | High efficiency filter for textile waste |
| NL8103750A (en) * | 1981-08-10 | 1983-03-01 | Stork Serv Bv | Sepg. solids from fluid by filter - and removing sediment from upstream surface, e.g. by suction or using directional filter selectivity |
| JPS60110315A (en) * | 1983-11-18 | 1985-06-15 | Mitsubishi Heavy Ind Ltd | Bag filter |
| DE3902829A1 (en) * | 1989-01-31 | 1990-08-02 | Linde Ag | BACKWASHABLE FILTER |
| DE4031627A1 (en) * | 1990-10-05 | 1992-04-16 | Schwelm Anlagen App | PRESSURE FILTER WITH CONTINUOUS CLEANING OF THE FILTER SURFACE |
| DE4225818C2 (en) * | 1991-09-11 | 1993-12-09 | Geldmacher Joachim | Filters for the continuous filtering of solids or similar liquids |
-
1994
- 1994-04-29 FI FI941978A patent/FI941978A/en not_active Application Discontinuation
- 1994-05-11 EP EP94810283A patent/EP0629426B1/en not_active Expired - Lifetime
- 1994-05-11 AT AT94810283T patent/ATE160512T1/en not_active IP Right Cessation
- 1994-05-11 DE DE59404656T patent/DE59404656D1/en not_active Expired - Fee Related
- 1994-05-18 ZA ZA943425A patent/ZA943425B/en unknown
- 1994-05-18 AU AU63165/94A patent/AU6316594A/en not_active Abandoned
- 1994-05-24 BR BR9402064A patent/BR9402064A/en active Search and Examination
- 1994-05-25 CA CA002124226A patent/CA2124226A1/en not_active Abandoned
- 1994-05-25 CN CN94105827A patent/CN1103812A/en active Pending
- 1994-05-25 NO NO941933A patent/NO941933L/en unknown
- 1994-05-26 JP JP6112613A patent/JPH07136440A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE59404656D1 (en) | 1998-01-08 |
| NO941933L (en) | 1994-11-28 |
| EP0629426B1 (en) | 1997-11-26 |
| ATE160512T1 (en) | 1997-12-15 |
| ZA943425B (en) | 1995-02-21 |
| BR9402064A (en) | 1994-12-13 |
| AU6316594A (en) | 1994-12-01 |
| FI941978A0 (en) | 1994-04-29 |
| CN1103812A (en) | 1995-06-21 |
| EP0629426A1 (en) | 1994-12-21 |
| NO941933D0 (en) | 1994-05-25 |
| FI941978A (en) | 1994-11-27 |
| JPH07136440A (en) | 1995-05-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |