• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a bag filter for cleaning dust-laden gases A with a housing (1) which is divided by a tube bottom (2) with openings (3) in a clean gas side (6) and a raw gas side (5), in which housing (1). a plurality of filter tubes (4) with a flat cross-section in the openings (3) of the tube bottom (2) are arranged. According to the invention, each support basket (12) at the open end of the respective filter hose (4) associated with end with an injector nozzle (15) for conducting and accelerating Abreinigungsdruckluftimpulse, which injector (15) at least partially into the openings (3) of the tube bottom (2 ) and on the outside of the injector nozzle (15) in the height of the tube bottom (3) sealing elements (16) for forming a defined gap (d) for a defined compression of the filter tube (4) between the sealing elements (16) and the lateral surface ( 17) of the opening (3) in the tube bottom (2) and thus a self-sealing of the filter tube (4) relative to the opening (3) of the tube bottom (2) are arranged.
    公开号:AT510406A4
    申请号:T472/2011
    申请日:2011-04-04
    公开日:2012-04-15
    发明作者:
    申请人:Scheuch Gmbh；
    IPC主号:
    专利说明:

    1
    The invention relates to a bag filter for cleaning dust laden gases with a housing which is divided by a tube bottom with openings in a clean gas side and a Rohgasseite, in which housing a plurality of filter tubes with a flat cross-section and each having a closed end and an open end in the openings of Tubing bottom are arranged, which filter bags from the outside are acted upon by the dust-laden gases and the purified gases are discharged through the open ends, with means for delivering compressed air pulses into the open ends of the filter bags for cleaning the filter bags, wherein in the filter bags each support baskets are arranged.
    The invention further relates to an injector nozzle for the filter bags of such a bag filter, which protrudes at least partially .in the opening of the tube bottom.
    Bag filters are used to deposit solids such as e.g. Shavings, dust or the like from the air or flue gases used. Examples of applications are the woodworking industry, metal industry, stone earth industry and the purification of flue gases. Dust filters usually comprise a housing, which is subdivided by a so-called tube bottom with openings in a clean gas side and a raw gas side. In the openings of the tube bottom, the filter bags are arranged in a vertical or horizontal orientation and sealed accordingly, so that no dust-laden gas from the raw gas side can pass unfiltered into the clean gas side.
    For example, AT 377 711 B and EP 848 980 Bl describe such bag filters. Usually, the filter bags have a circular. Cross-section and have at the open end a snap ring with which the filter bags can be arranged without tools in the openings of the tube bottom. The sealing of the filter bags relative to the opening in the tube bottom is usually carried out without additional devices, apart from possible holding elements which hold the upper open filter tube end in the opening of the tube bottom. 2
    However, filter tubes of round cross-section have the disadvantage that the ratio of filter area, i. the outer surface of the filter tube to the internal volume, relative unfavorable. Therefore, filter tubes with a flat cross section, for example, slot-shaped cross-section or oval cross-section, are offered, in which the ratio of the filter surface to the inner volume is cheaper than filter tubes with a circular cross-section. Disadvantages of the bag filter with filter hoses flat cross-section, however, are the poorer Abreinigungswirkung by the flat cross-section and consequent worse filtration function and the more complex and difficult installation of the hoses and necessary sealing the filter bags by means of clamping or clamping devices. In a filter hose with a flat, for example, slot-shaped cross-section, it is not possible to achieve a sufficient seal against the opening in the tube bottom without additional assistance, otherwise leaks occur in the longitudinal region of the filter tube. In known bag filters with filter tubes with a flat cross-section, the seal against the opening of the tube bottom is made with constructions that press the upper end of the filter bags against the tube bottom and thus achieve a corresponding sealing effect. Due to the necessary step of sealing the assembly of such bag filter is very complicated and expensive.
    In addition, in bag filters with filter tubes with a flat cross-section parallel alignment of the filter bags to each other only with tools, such as appropriate hose guides, possible.
    Due to the existing disadvantages of such bag filters with filter tubes with a flat cross section whose use is still relatively limited. If it were possible to eliminate or at least reduce the disadvantages, the same cleaning effect could be achieved with bag filters with filter tubes having a flat cross section with a correspondingly reduced volume in comparison with bag filters with filter tubes having a round cross section.
    3 kung be achieved or with filter systems of the same size, a higher air flow can be achieved.
    The object of the present invention is to provide an above-mentioned bag filter in which the filter bags, baskets and injector can be mounted and dismantled as quickly and easily and a reliable seal can be achieved without expensive constructive tools to the tubing and the function of the bag filter can be improved and can be produced as inexpensively. The disadvantages of known bag filters with filter tubes with a flat cross section should be avoided or at least reduced.
    Another object of the present invention is to provide an injector nozzle for an above-mentioned bag filter, by which the assembly and disassembly can be facilitated and with which an optimum cleaning effect can be achieved.
    The first object of the invention is achieved by an above-mentioned bag filter in which each support basket is connected to the open end of the respective filter hose associated with an injector nozzle for directing and accelerating Abreini-supply pressure pulses, which injector nozzle protrudes at least into the opening of the tube bottom, and on the outside of the injector nozzle in the height of the tube bottom sealing elements to form a defined gap for a defined compression of the filter tube between the Abdi Ehr. elements and the lateral surface of the opening in the tube bottom and thus an automatic sealing of the filter tube relative to the opening of the tube bottom are arranged. The inventive construction of the bag filter thus effected by the correspondingly shaped injector nozzle on the one hand easier and faster installation of the filter bags in the housing of the bag filter and on the other hand automatic sealing of the Filterschlauchendes against the opening of the tube bottom, without additional structures and measures are required. The sealing of the filter tube with respect to the • · »1» * * • •> 1 »* * • * *« * «
    ♦ · • • 4 4 4 4 4 4 4
    Tubing bottom occurs automatically and exclusively by inserting the injector nozzle into the open end of the filter tube. The injector nozzle also improves the cleaning of the filter bag.
    According to a further feature of the invention, each injector nozzle is formed by a muzzle widening in a funnel shape against the means for delivering the compressed air pulses. Due to the funnel-shaped widening mouth of the injector, the compressed air resulting from the devices for the delivery of compressed air pulses can be substantially completely passed into the open filter bags and accelerated and thus the entire energy of the compressed air pulses are used for cleaning. Due to the improved cleaning effect, in turn, the filter effect of the filter tube is improved.
    The ratio of the smallest width of the injector nozzle to the width of the mouth of the injector nozzle is preferably 1: 2 to 1: 4, particularly preferably 1: 2.5.
    In the simplest case, the sealing elements are formed by at least one bulge on the injector nozzle, through which the filter tube against the lateral surface of the opening in the tube bottom can be pressed. The injector nozzle is preferably made of sheet metal and produced at the height of the tube bottom with the bulges by corresponding embossing tools.
    The bulges press the flat filter tubes at least on the long side against the Mantelfäche the openings in the tube bottom and thus ensure optimum sealing. The construction ensures that between the outside of the sealing element or the bulge on the nozzle nozzle and the lateral surface of the opening irr. Tube bottom results in a defined gap, which is so wide that the material of the Fiiterschlauchs is sufficiently compress, so that an absolute tightness between the Rohqassejte and clean gas side of the bag filter results. Depending on the design of the connection of the upper open F.ndes the filter tube with the opening in the tube bottom can at least one bulge on each longitudinal side of the injector or a circumferential
    Bulge can be arranged on the injector nozzle.
    Advantageously, each filter tube is provided on the open with an outer annular bead, wherein the outer diameter of the annular bead is greater than the outer diameter of the opening in the tube bottom, so that the annular bead of the filter tube rests on the tube bottom. In such an embodiment of the filter bags, a mounting can be done by simply hooking the filter tube into the openings in the tube bottom. Thereafter, the support baskets are used and finally achieved by arranging the inventively embodied injector nozzles a fixation of the filter bags and a seal. In this case, it is advantageous if the sealing element arranged circumferentially on the injector, so that along the entire opening in the tube bottom a defined gap for a defined compression of the filter tube results. A construction for holding down the filter bags is not required, at least for a vertical arrangement of the filter bags in the bag filter.
    Likewise, each filter hose can be provided at the open end with a spring ring and two outer annular elevations, between which elevations an annular groove is formed, via the opening in the tube bottom a snap connection can be produced. In the case of the execution of the filter bags with snap rings, the sealing elements on the injector need only be arranged on the longitudinal side in order to achieve a sufficient seal can. For the vertical arrangement of the filter hoses in the hose, it is advantageous if elements are arranged on each injector nozzle for support on the tube bottom. By such support elements or feet on the injector nozzle a straight holding of the filter bags and thus a parallel arrangement of the filter bags to each other can be achieved without additional hose guides, if a corresponding connection between the Injektcrdüse and the support basket is provided or
    ························································································································································································································
    With a horizontal alignment of the filter bags in the bag filter elements for supporting the baskets may be required. At such support elements at least the ends of the support baskets are placed, thereby achieving a parallel arrangement of all filter bags to each other. For an optimum ratio of filter area to inner volume of the filter bags, these preferably have a cross-section with a length-to-width ratio of at least 4: 1.
    The devices for delivering compressed air pulses are preferably formed by propulsion jet tubes, each with two juxtaposed openings per filter bag, wherein the propulsion jet tubes are connected to a corresponding compressed air source. Such an arrangement of at least two juxtaposed openings for the delivery of compressed air pulses per filter hose, an optimal cleaning of the filter bags can be achieved with a flat cross-section. The at least two openings are arranged along the longitudinal axis of the cross section of the filter tube.
    Advantageously, each support basket is connected to the injector nozzle releasably without tools. For example, latching connections can be provided which automatically connect the support cage to the injector nozzle as soon as the injector nozzle is inserted into the open end of the filter tube.
    Alternatively, each support basket can be made in one piece with the injector nozzle. Such a design is advantageous in particular with smaller support basket lengths, since the support basket can be inserted into the filter hose with a working collar and the filter hose can be sealed off from the opening in the hose bottom.
    The second object according to the invention is also achieved by means of an above-mentioned injector nozzle for the filter tubes of a hose filter mentioned above, wherein sealing elements form on the outside of the injector nozzle at a height corresponding to the height of the hose bottom in the operating position of the injector nozzle
    ♦ · kl *****
    A defined gap for a defined compression of the filter tube between the sealing elements and the lateral surface the opening in the tube bottom and thus an automatic sealing of the filter tube relative to the opening of the tube bottom are arranged. As already mentioned above, the sealing and injector function can be combined by such an injector nozzle. Should the injector nozzle have been made in one piece with the support basket, the support function is additionally achieved.
    With regard to the embodiments of the injector nozzle according to the invention, reference is made to the above description of the bag filter.
    The present invention will be explained in more detail with reference to the accompanying drawings.
    Show in it
    1 shows a cross section of a bag filter in a schematic representation.
    2 shows a cross section through an inventively embodied injector nozzle for fastening a formed with a snap ring filter tube.
    Fig. 3 shows a modified embodiment of an injector nozzle for attaching an end provided with an annular bead of a filter bag;
    4 shows a perspective view of a variant of an injector nozzle;
    FIG. 3 shows an injector nozzle constructed according to FIG. 4, made up of 4 parts. and
    Fig. 6 is an integrally manufactured with a support basket injector nozzle in a perspective view. • * * «» * * ·· ι · * »♦ ·» 9 * · * · · # · · t 4 «* * * * * *« «« ·································································· · > * ··" "·" 8th
    Fig. 1 shows a cross section through a known type of bag filter design. In a housing 1 is a tube bottom 2 with openings 3, are arranged or suspended in the corresponding filter bags 4. The dust-laden gases A are introduced into the raw gas side 5 of the bag filter. The filter bags 4 have an open upper end and a closed lower end. The dust-laden gases A flow through the material of the filter bags 4 and pass through the openings 3 in the tube bottom 2 in the clean gas side 6 of the bag filter. From there, the clean gases B are derived accordingly. In the clean gas side 6 of the bag filter devices 7 are arranged for the delivery of compressed air pulses in the open end of the filter bags 4 for cleaning the filter bags. These devices 7 for dispensing compressed air pulses can be formed, for example, by appropriately designed propulsion jet tubes 8 having openings 9 above each filter tube 4 and a corresponding compressed air source 10 connected to the propulsion jet tubes 8. In regular or according to the contamination of the filter bags 4 regulated intervals are injected via the openings 9 of the propulsion jet tubes 8 pulses of compressed air into the filter bags 4 and the dust adhering to the outside of the filter bags 4 cleaned. In order to prevent the filter tubes 4 from collapsing of textile material, 4 support baskets 12 for stabilization are arranged inside the filter tubes 4. The separated during cleaning of the filter bags 4 filter cake is discharged through a collecting hopper 13 and possibly a discharge member 14. To achieve a seal of Fil.terschlauche 4 with respect to the openings 3 in the tube bottom 2 corresponding Abaichteinrichtnnger 11 are necessary. In particular, with filter tubes 1 with a flat cross section such a seal can be achieved only with the appropriate effort.
    Fig. 2 shows a Ausführunqsform of the present invention, wherein an injector nozzle 1b is provided, which serves on the one hand for directing and accelerating the device 7 for the delivery of compressed air pulses originating compressed air pulses, and on the other hand, the filter bag 4 with respect to the opening 3 in Schlauc'nboden second seals. For this purpose, the injector nozzle 15 on the outside at the level of the tube bottom 2 Ab-sealing elements 16 to form a defined gap Ad for a defined compression of the filter tube 4 between the sealing elements 16 and the lateral surface 17 of the opening 3 in the tube bottom 2 and Thus, an automatic sealing of the filter tube 4 with respect to the opening 3 of the tube bottom 2. In the illustrated embodiment of FIG. 2, the filter tube 4 is provided at the open end with a spring ring 18 with two outer annular projections 19, between which elevations 19 an annular groove 20 is formed, via the opening 3 in the tube bottom 2 a snap connection can be produced , By the sealing elements 16 on the outside of the injector 15 thus the filter tube 4 is pressed on the longitudinal side against the jacket surface 17 of the opening 3 in the tube bottom 2 and achieved a corresponding seal without additional measures. The injector nozzle 15 preferably has an opening 21 which widens in a funnel shape against the means 7 for the delivery of compressed air pulses. The ratio of the smallest width of the injector nozzle 15 to the width of the mouth 21 may be 1: 2 to 1: 4, preferably 1: 2.5. In particular, in a vertical arrangement of the filter bags 4, it may be advantageous if 15 elements 22 are arranged on the hose bottom 2 for support on the injector nozzle. Through this, a straight alignment of the filter bags 4 or arranged therein support baskets 12, without additional Schlauchtührungen achieved.
    Fig. 3 shows a comparison with FIG. 2 modified form of a bag filter, wherein the upper open end of the filter bag 4 has an outside annular bead 23 which rests on the tube bottom 2. In order to be able to achieve a sealing of the filter tube 4 with respect to the opening 3 in the ski floor 2, in this case a sealing element 16 is preferably provided on the injector nozzle 15, which is formed by a circumferential bulge 24. This embodiment is particularly suitable for vertically angeordr.ete Filterschi äuche. 4
    Fig. 4 shows a perspective view of an injector nozzle 15, wherein the sealing member 16 is clearly visible in the form of a bulge 24 on 10 of the longitudinal side. The injector nozzle 15 also has corresponding elements 25 for preferably tool-less releasable connection to a support basket 12, which may be formed, for example, through openings in which elements of the support basket 12 engage.
    5 shows a possible combination of an injector nozzle 15 made of four sheet metal parts 15 ', 15' ', 151' and 15 '' '', wherein in each case two parts 15 ', 15' '' and 15 '', 15 '' ' 'are identical. In this way, the injector 15 can be made very quickly and inexpensively. It is also possible to produce the injector nozzle 15 from a bleaching part by bending and joining, for example by a welding process.
    Fig. 6 shows an embodiment in which the injector nozzle 15 and the support basket 12 are hergesteilt integrally. This design variant allows a particularly rapid installation of the filter bags 4 in the bag filter with simultaneous automatic sealing of the filter bags 4 with respect to the openings 3 in the tube bottom 2 of the bag filter. Such a trained injector 15 with integrated support basket 12 combines the support function, sealing function and injector function of the bag filter.
    In this way, an application of a bag filter with filter tubes 4 with a flat cross-section without the disadvantages of the prior art is possible. By eliminating the disadvantages of bag filters with filter bags 4 with a flat cross-section thus smaller filter systems compared to bag filters with filter bags with a round cross-section with the same cleaning effect can be used
    权利要求:
    Claims (18)
    [1]
    11

    1. bag filter for cleaning dust-laden gases (A), with a housing (1) which is divided by a tube bottom (2) with openings (3) in a clean gas side (6) and a raw gas side (5), in which housing (1) a plurality of filter tubes (4) with a flat cross-section and each having a closed end and an open end in the openings (3) of the tube bottom (2) are arranged, which filter tubes (4) from the outside with the dust-laden gases (A) acted upon and the purified gases are discharged via the open ends, with means (7) for delivering compressed air pulses into the open ends of the filter bags (4) for cleaning the filter bags (4), wherein in the filter bags {4} each support baskets (12) are arranged, characterized in that each support basket (12) at the, the open end of the respective filter hose (4) associated with an injector nozzle (15) for conducting and acceleration d it is connected Abreinigungs-compressed air pulses, which injector nozzle (15) at least partially into the opening (3) of the tube bottom (2) protrudes, and on the outside of the injector nozzle (15) in the height of the tube bottom (2) sealing elements (16) for forming a defined gap (Ad) for a defined compression of the filter tube (4) between the sealing elements (16) and the lateral surface (17) of the opening (3) in the tube bottom (2) and thus an automatic sealing of the filter tube (4) relative to the opening (3) of the hose bottom (2) are arranged.
    [2]
    2. bag filter according to claim 1, characterized in that each injector nozzle (15) durcn against the means (7) for discharging the compressed air pulses funnel-shaped widening mouth (21) is formed.
    [3]
    3. bag filter according to claim 2, characterized in that the ratio of the smallest width of the injector nozzle (15) to the width of the mouth (21) of the injector nozzle (15) 1: 2 to 1: 4, preferably 1: 2.5.
    [4]
    4. Tubular filter according to one of claims 1 to 3, characterized in that the sealing elements (16) are formed by at least one bulge (24) on the injector nozzle (15), through which the filter tube (4) against the lateral surface (17 ) of the opening (3) in the tube bottom (2) can be pressed.
    [5]
    5. bag filter according to one of claims 1 to 4, characterized in that each filter tube (4) at the open end with an outer annular bead (23) is provided, which annular bead (23) on the tube bottom (2) rests.
    [6]
    6. bag filter according to one of claims 1 to 4, characterized in that each filter tube (4) at the open end with a spring ring (18) and two outer annular projections (19) is provided between which elevations (19) has an annular groove ( 20) is formed, via which with the opening (3) in the tube bottom (2) a snap connection can be produced.
    [7]
    7. bag filter according to one of claims 1 to 6, characterized in that at each injector nozzle (15) elements (22) for support on the hose bottom (2) are arranged.
    [8]
    8. bag filter according to one of claims 1 to 7, characterized in that elements (22) for supporting the support baskets (12) are provided.
    [9]
    9. bag filter according to one of claims 1 to 8, characterized in that the filter bags (4) having a cross section. have a length / width ratio of at least 4: 1.
    [10]
    10. bag filter according to one of claims 1 to 9, characterized in that the means (7) for delivering compressed air pulses by propulsion tubes (8) rr.it each two juxtaposed openings (9) per filter bag (4) are formed, which Treibstrahlrohre (8) me a print'iuft-que.l. le (10) are connected.
    [11]
    11. bag filter according to one of claims 1 to 10, characterized in that each support basket (12) with the Ir. ektordüse (15) is tool-releasably connected to each other. 13
    [12]
    12. Bag filter according to one of claims 1 to 10, characterized in that each support basket (12) with the injector nozzle (15} is made in one piece.
    [13]
    'Injector nozzle (15) for the filter bags (4) of a bag filter (1) according to one of claims 1 to 12, which at least partially into the opening (3) of the tube bottom (2) protrudes, characterized in that on the outside in the operating position in the amount of the tube bottom (2) sealing elements (16) for forming a defined gap (Ad) for a defined compression of the filter tube (4) between the sealing elements (16) and the lateral surface (17) of the opening (3) in the tube bottom ( 2) and thus an automatic sealing of the filter slide (4) with respect to the opening (3) of the tube bottom (2) are arranged.
    [14]
    14. injector nozzle (15) according to claim 13, characterized in that against the means (7) for discharging the compressed air pulses funnel-shaped widening mouth (21) is provided.
    [15]
    15. Injector nozzle (15) according to claim 14, characterized in that the ratio of the smallest width of the injector nozzle (15) to the width of the mouth (21) of the injector nozzle (15) 1: 2 to 1: 4, preferably 1: 2.5 is.
    [16]
    16. Injektordüse (15) according to any one of claims 13 to 15, characterized in that the sealing elements (16) by at least one bulge (24) on the injector nozzle (15) are formed, through which the Filtercrü also (4) against the lateral surface (17) of the opening (3) in the tube bottom (2) can be pressed.
    [17]
    17. Injector nozzle (15) according to any one of claims 13 to 16, characterized in that elements (22) are ar.ordinated for support on Schl bottom (2).
    [18]
    18. injector nozzle (15) according to any one of claims 13 to 17, characterized in that elements for tool-free releasable connection with a support basket (12) are provided.
    类似技术:
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    同族专利:
    公开号 | 公开日
    US20140020345A1|2014-01-23|
    BR112013025590A2|2016-12-27|
    WO2012135881A1|2012-10-11|
    CA2832206A1|2012-10-11|
    EP2694185A1|2014-02-12|
    RU2013148764A|2015-05-10|
    CN103635244B|2015-07-22|
    CA2832206C|2016-01-12|
    US9283504B2|2016-03-15|
    RU2592802C2|2016-07-27|
    EP2694185B1|2014-11-19|
    CN103635244A|2014-03-12|
    AT510406B1|2012-04-15|
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    CN111991933A|2020-08-26|2020-11-27|泉州方科昌耀工业设计有限公司|Harmful gas purification treatment device for environmental protection engineering|
    CN111921288A|2020-08-28|2020-11-13|戴旭凡|Pulse bag type dust collector|
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    法律状态:
    2016-12-15| MM01| Lapse because of not paying annual fees|Effective date: 20160404 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA472/2011A|AT510406B1|2011-04-04|2011-04-04|HOSE FILTER FOR CLEANING DUST-LOADED GASES AND INJECTOR FOR SUCH A HOSE FILTER|ATA472/2011A| AT510406B1|2011-04-04|2011-04-04|HOSE FILTER FOR CLEANING DUST-LOADED GASES AND INJECTOR FOR SUCH A HOSE FILTER|
    RU2013148764/05A| RU2592802C2|2011-04-04|2012-04-04|Bag filter for cleaning dust-containing gas and injection nozzle for said bag filter|
    US14/009,892| US9283504B2|2011-04-04|2012-04-04|Bag filter for cleaning dust-laden gases and injector nozzle for such a bag filter|
    CA2832206A| CA2832206C|2011-04-04|2012-04-04|Bag filter for cleaning dust-laden gases and injector nozzle for such a bag filter|
    PCT/AT2012/000091| WO2012135881A1|2011-04-04|2012-04-04|Bag filter for cleaning dust-laden gases and injector nozzle for such a bag filter|
    EP12715807.9A| EP2694185B1|2011-04-04|2012-04-04|Bag filter for cleaning dust-laden gases and injector nozzle for such a bag filter|
    BR112013025590A| BR112013025590A2|2011-04-04|2012-04-04|dust-laden gas filter bag and nozzle nozzle for such a bag filter|
    CN201280027410.4A| CN103635244B|2011-04-04|2012-04-04|Bag filter for cleaning dust-laden gases and injector nozzle for such a bag filter|
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